{ /*************************************************************************** forms.pp -------- Component Library Code Initial Revision : Sun Mar 28 23:15:32 CST 1999 Revised : Sat Jul 15 1999 ***************************************************************************/ ***************************************************************************** * * * This file is part of the Lazarus Component Library (LCL) * * * * See the file COPYING.modifiedLGPL.txt, included in this distribution, * * for details about the copyright. * * * * This program is distributed in the hope that it will be useful, * * but WITHOUT ANY WARRANTY; without even the implied warranty of * * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * * ***************************************************************************** } unit Forms; {$mode objfpc}{$H+}{$macro on} interface {$ifdef Trace} {$ASSERTIONS ON} {$endif} {$DEFINE HasDefaultValues} uses Classes, SysUtils, Types, TypInfo, Math, AvgLvlTree, Maps, LCLVersion, LCLStrConsts, LCLType, LCLProc, LCLIntf, FileUtil, InterfaceBase, LResources, GraphType, Graphics, Menus, LMessages, CustomTimer, ActnList, ClipBrd, CustApp, HelpIntfs, LCLClasses, Controls, Themes {$ifndef wince},gettext{$endif}// remove ifdefs when gettext is fixed and a new fpc is released ; type // forward class declarations TIDesigner = class; TMonitor = class; TScrollingWinControl = class; TProcedure = procedure; TProcedureOfObject = procedure of object; // form position policies: TPosition = ( poDesigned, // use bounds from the designer (read from stream) poDefault, // LCL decision (normally window manager decides) poDefaultPosOnly, // designed size and LCL position poDefaultSizeOnly, // designed position and LCL size poScreenCenter, // center form on screen (depends on DefaultMonitor) poDesktopCenter, // center form on desktop (total of all screens) poMainFormCenter, // center form on main form (depends on DefaultMonitor) poOwnerFormCenter // center form on owner form (depends on DefaultMonitor) ); TWindowState = (wsNormal, wsMinimized, wsMaximized); TCloseAction = (caNone, caHide, caFree, caMinimize); { Hint actions } TCustomHintAction = class(TCustomAction) published property Hint; end; { TControlScrollBar } TScrollBarKind = (sbHorizontal, sbVertical); TScrollBarInc = 1..32768; TScrollBarStyle = (ssRegular, ssFlat, ssHotTrack); EScrollBar = class(Exception) end; TControlScrollBar = class(TPersistent) private FAutoRange : Longint; FIncrement: TScrollBarInc; FKind: TScrollBarKind; FPage: TScrollBarInc; FPosition: Integer; FRange: Integer; FSmooth : Boolean; FVisible: Boolean; FOldScrollInfo: TScrollInfo; FOldScrollInfoValid: Boolean; FOldHandleVisible: Boolean; protected FControl: TWinControl; function ControlAutoScroll: boolean; virtual; function ControlHandle: HWnd; virtual; function GetIncrement: TScrollBarInc; virtual; function GetPage: TScrollBarInc; virtual; function GetPosition: Integer; virtual; function GetRange: Integer; virtual; function GetSize: integer; virtual; function GetSmooth: Boolean; virtual; function GetVisible: Boolean; virtual; function HandleAllocated: boolean; virtual; function SmoothIsStored: boolean; virtual; function VisibleIsStored: boolean; virtual; procedure AutoCalcRange; virtual; procedure ControlUpdateScrollBars; virtual; procedure ScrollHandler(var Message: TLMScroll); procedure SetIncrement(const AValue: TScrollBarInc); virtual; procedure SetPage(const AValue: TScrollBarInc); virtual; procedure SetPosition(const Value: Integer); virtual; procedure SetRange(const Value: Integer); virtual; procedure SetSize(const AValue: integer); virtual; procedure SetSmooth(const Value: Boolean); virtual; procedure SetVisible(const Value: Boolean); virtual; procedure UpdateScrollBar; virtual; procedure InvalidateScrollInfo; {$ifdef VerboseScrollingWinControl} function DebugCondition: Boolean; {$endif} function GetHorzScrollBar: TControlScrollBar; virtual; function GetVertScrollBar: TControlScrollBar; virtual; public constructor Create(AControl: TWinControl; AKind: TScrollBarKind); procedure Assign(Source: TPersistent); override; function IsScrollBarVisible: Boolean; virtual; function ScrollPos: Integer; virtual; property Kind: TScrollBarKind read FKind; function GetOtherScrollBar: TControlScrollBar; property Size: integer read GetSize write SetSize stored false; published property Increment: TScrollBarInc read GetIncrement write SetIncrement default 8; property Page: TScrollBarInc read GetPage write SetPage default 80; property Smooth : Boolean read GetSmooth write SetSmooth stored SmoothIsStored; property Position: Integer read GetPosition write SetPosition default 0; property Range: Integer read GetRange write SetRange default 0; property Visible: Boolean read GetVisible write SetVisible stored VisibleIsStored; end; { TScrollingWinControl } TScrollingWinControl = class(TCustomControl) private FHorzScrollBar: TControlScrollBar; FVertScrollBar: TControlScrollBar; FAutoScroll: Boolean; FIsUpdating: Boolean; procedure SetAutoScroll(Value: Boolean); procedure SetHorzScrollBar(Value: TControlScrollBar); procedure SetVertScrollBar(Value: TControlScrollBar); function StoreScrollBars : Boolean; protected class procedure WSRegisterClass; override; property AutoScroll: Boolean read FAutoScroll write SetAutoScroll default true; procedure AlignControls(AControl: TControl; var ARect: TRect); override; procedure CreateWnd; override; function GetClientScrollOffset: TPoint; override; function GetLogicalClientRect: TRect; override;// logical size of client area procedure DoOnResize; override; procedure WMHScroll(var Message : TLMHScroll); message LM_HScroll; procedure WMVScroll(var Message : TLMVScroll); message LM_VScroll; function ComputeScrollbars: Boolean; virtual; procedure ScrollbarHandler(ScrollKind: TScrollBarKind; OldPosition: Integer); virtual; procedure Loaded; override; public constructor Create(TheOwner : TComponent); override; destructor Destroy; override; procedure UpdateScrollbars; function HasVisibleScrollbars: boolean; virtual; class function GetControlClassDefaultSize: TPoint; override; procedure ScrollBy(DeltaX, DeltaY: Integer); published property HorzScrollBar: TControlScrollBar read FHorzScrollBar write SetHorzScrollBar stored StoreScrollBars; property VertScrollBar: TControlScrollBar read FVertScrollBar write SetVertScrollBar stored StoreScrollBars; end; { TScrollBox } TScrollBox = class(TScrollingWinControl) protected class procedure WSRegisterClass; override; public constructor Create(AOwner: TComponent); override; published property Align; property Anchors; property AutoSize; property AutoScroll; property BorderSpacing; property BiDiMode; property BorderStyle default bsSingle; property ChildSizing; property ClientHeight; property ClientWidth; property Constraints; property DockSite; property DragCursor; property DragKind; property DragMode; property Enabled; property Color nodefault; property Font; property ParentBiDiMode; property ParentColor; property ParentFont; property ParentShowHint; property PopupMenu; property ShowHint; property TabOrder; property TabStop; property Visible; //property OnCanResize; property OnClick; property OnConstrainedResize; property OnDblClick; property OnDockDrop; property OnDockOver; property OnDragDrop; property OnDragOver; property OnEndDock; property OnEndDrag; property OnEnter; property OnExit; property OnGetSiteInfo; property OnMouseDown; property OnMouseMove; property OnMouseUp; property OnMouseWheel; property OnMouseWheelDown; property OnMouseWheelUp; property OnResize; property OnStartDock; property OnStartDrag; property OnUnDock; property OnPaint; end; { TCustomFrame } TCustomFrame = class(TScrollingWinControl) private procedure AddActionList(ActionList: TCustomActionList); procedure RemoveActionList(ActionList: TCustomActionList); procedure ReadDesignLeft(Reader: TReader); procedure ReadDesignTop(Reader: TReader); procedure WriteDesignLeft(Writer: TWriter); procedure WriteDesignTop(Writer: TWriter); protected class procedure WSRegisterClass; override; procedure GetChildren(Proc: TGetChildProc; Root: TComponent); override; procedure Notification(AComponent: TComponent; Operation: TOperation); override; procedure SetParent(AParent: TWinControl); override; procedure DefineProperties(Filer: TFiler); override; public constructor Create(AOwner: TComponent); override; class function GetControlClassDefaultSize: TPoint; override; end; TCustomFrameClass = class of TCustomFrame; { TFrame } TFrame = class(TCustomFrame) private FLCLVersion: string; function LCLVersionIsStored: boolean; public constructor Create(TheOwner: TComponent); override; published property Align; property Anchors; property AutoScroll; property AutoSize; property BorderSpacing; property ChildSizing; property ClientHeight; property ClientWidth; property Color nodefault; property Constraints; property DockSite; property DragCursor; property DragKind; property DragMode; property Enabled; property Font; property LCLVersion: string read FLCLVersion write FLCLVersion stored LCLVersionIsStored; property OnClick; property OnConstrainedResize; property OnContextPopup; property OnDblClick; property OnDockDrop; property OnDockOver; property OnDragDrop; property OnDragOver; property OnEndDock; property OnEndDrag; property OnEnter; property OnExit; property OnGetSiteInfo; property OnMouseDown; property OnMouseMove; property OnMouseUp; property OnMouseWheel; property OnMouseWheelDown; property OnMouseWheelUp; property OnResize; property OnStartDock; property OnStartDrag; property OnUnDock; property ParentColor; property ParentFont; property ParentShowHint; property PopupMenu; property ShowHint; property TabOrder; property TabStop; property Visible; end; { TCustomForm } TBorderIcon = ( // Form title bar items biSystemMenu, // system menu biMinimize, // minimize button biMaximize, // maximize button biHelp // help button ); TBorderIcons = set of TBorderIcon; TDefaultMonitor = ( // monitor to place form dmDesktop, // use full desktop dmPrimary, // use primary monitor dmMainForm, // use monitor of main form dmActiveForm // use monitor of active form ); TFormStateType = ( fsCreating, // initializing (form streaming) fsVisible, // form should be shown fsShowing, // form handling WM_SHOWWINDOW message fsModal, // form is modal fsCreatedMDIChild, // todo: not mplemented fsBorderStyleChanged,// border style is changed before window handle creation fsFormStyleChanged, // form style is changed before window handle creation fsFirstShow, // form is shown for the first time fsDisableAutoSize // disable autosize ); TFormState = set of TFormStateType; TModalResult = low(Integer)..high(Integer); PModalResult = ^TModalResult; TFormHandlerType = ( fhtFirstShow, fhtClose, fhtCreate ); TShowInTaskbar = (stDefault, stAlways, stNever); TCloseEvent = procedure(Sender: TObject; var CloseAction: TCloseAction) of object; TCloseQueryEvent = procedure(Sender : TObject; var CanClose : boolean) of object; TDropFilesEvent = procedure (Sender: TObject; const FileNames: Array of String) of object; THelpEvent = function(Command: Word; Data: PtrInt; var CallHelp: Boolean): Boolean of object; TShortCutEvent = procedure (var Msg: TLMKey; var Handled: Boolean) of object; TCustomForm = class(TScrollingWinControl) private FActive: Boolean; FActiveControl: TWinControl; FActiveDefaultControl: TControl; FAllowDropFiles: Boolean; FBorderIcons: TBorderIcons; FDefaultControl: TControl; FCancelControl: TControl; FDefaultMonitor: TDefaultMonitor; FDesigner: TIDesigner; FFormState: TFormState; FFormStyle: TFormStyle; FFormUpdateCount: integer; FFormHandlers: array[TFormHandlerType] of TMethodList; FHelpFile: string; FIcon: TIcon; FSmallIconHandle: HICON; FBigIconHandle: HICON; FKeyPreview: Boolean; FMenu: TMainMenu; FModalResult: TModalResult; FOldBorderStyle: TFormBorderStyle; FOnActivate: TNotifyEvent; FOnClose: TCloseEvent; FOnCloseQuery: TCloseQueryEvent; FOnCreate: TNotifyEvent; FOnDeactivate: TNotifyEvent; FOnDestroy: TNotifyEvent; FOnDropFiles: TDropFilesEvent; FOnHelp: THelpEvent; FOnHide: TNotifyEvent; FOnShortcut: TShortCutEvent; FOnShow: TNotifyEvent; FOnWindowStateChange: TNotifyEvent; FPixelsPerInch: Longint; FPosition: TPosition; FRestoredLeft: integer; FRestoredTop: integer; FRestoredWidth: integer; FRestoredHeight: integer; FShowInTaskbar: TShowInTaskbar; FWindowState: TWindowState; function GetMonitor: TMonitor; function GetPixelsPerInch: Longint; function GetRestoredLeft: integer; function GetRestoredTop: integer; function IsForm : Boolean; function IsHelpFileStored: boolean; function IsIconStored: Boolean; procedure CloseModal; procedure FreeIconHandles; procedure IconChanged(Sender: TObject); function IsKeyPreviewStored: boolean; procedure SetActive(AValue: Boolean); procedure SetActiveControl(AWinControl: TWinControl); procedure SetActiveDefaultControl(AControl: TControl); procedure SetAllowDropFiles(const AValue: Boolean); procedure SetBorderIcons(NewIcons: TBorderIcons); procedure SetFormBorderStyle(NewStyle: TFormBorderStyle); procedure SetCancelControl(NewControl: TControl); procedure SetDefaultControl(NewControl: TControl); procedure SetDesigner(Value : TIDesigner); procedure SetFormStyle(Value : TFormStyle); procedure SetIcon(AValue: TIcon); procedure SetMenu(Value : TMainMenu); procedure SetModalResult(const AValue: TModalResult); procedure SetPosition(Value : TPosition); procedure SetShowInTaskbar(Value: TShowInTaskbar); procedure SetWindowFocus; procedure SetWindowState(Value : TWindowState); procedure WMActivate(var Message : TLMActivate); message LM_ACTIVATE; procedure WMCloseQuery(var message: TLMessage); message LM_CLOSEQUERY; procedure WMDeactivate(var Message : TLMActivate); message LM_DEACTIVATE; procedure WMPaint(var message: TLMPaint); message LM_PAINT; procedure WMShowWindow(var message: TLMShowWindow); message LM_SHOWWINDOW; procedure WMSize(var message: TLMSize); message LM_Size; procedure CMBiDiModeChanged(var Message: TLMessage); message CM_BIDIMODECHANGED; procedure CMAppShowBtnGlyphChanged(var Message: TLMessage); message CM_APPSHOWBTNGLYPHCHANGED; procedure CMAppShowMenuGlyphChanged(var Message: TLMessage); message CM_APPSHOWMENUGLYPHCHANGED; procedure CMIconChanged(var Message: TLMessage); message CM_ICONCHANGED; procedure CMRelease(var Message: TLMessage); message CM_RELEASE; procedure AddHandler(HandlerType: TFormHandlerType; const Handler: TMethod; AsLast: Boolean); procedure RemoveHandler(HandlerType: TFormHandlerType; const Handler: TMethod); function FindDefaultForActiveControl: TWinControl; protected FFormBorderStyle: TFormBorderStyle; FActionLists: TList; class procedure WSRegisterClass; override; procedure CMShowingChanged(var Message: TLMessage); message CM_SHOWINGCHANGED; procedure DoShowWindow; virtual; procedure Activate; virtual; procedure ActiveChanged; virtual; procedure AdjustClientRect(var Rect: TRect); override; procedure BeginFormUpdate; function ColorIsStored: boolean; override; procedure CreateParams(var Params: TCreateParams); override; procedure CreateWnd; override; procedure Deactivate; virtual; procedure DoClose(var CloseAction: TCloseAction); virtual; procedure DoCreate; virtual; procedure DoDestroy; virtual; procedure DoHide; virtual; procedure DoShow; virtual; procedure EndFormUpdate; procedure GetChildren(Proc: TGetChildProc; Root: TComponent); override; function HandleCreateException: Boolean; virtual; function HandleDestroyException: Boolean; virtual; function HandleShowHideException: Boolean; virtual; procedure Loaded; override; procedure ChildHandlesCreated; override; procedure Notification(AComponent: TComponent; Operation : TOperation);override; procedure PaintWindow(dc : Hdc); override; procedure RequestAlign; override; procedure SetZOrder(Topmost: Boolean); override; procedure SetParent(NewParent: TWinControl); override; procedure UpdateShowing; override; procedure SetVisible(Value: boolean); override; procedure DoFirstShow; virtual; procedure UpdateWindowState; procedure VisibleChanging; override; procedure WndProc(var TheMessage : TLMessage); override; function VisibleIsStored: boolean; procedure DoSendBoundsToInterface; override; procedure DoAutoSize; override; procedure SetAutoSize(Value: Boolean); override; protected // drag and dock procedure BeginAutoDrag; override; procedure DoDock(NewDockSite: TWinControl; var ARect: TRect); override; function GetFloating: Boolean; override; function GetDefaultDockCaption: String; override; protected // actions procedure CMActionExecute(var Message: TLMessage); message CM_ACTIONEXECUTE; procedure CMActionUpdate(var Message: TLMessage); message CM_ACTIONUPDATE; function DoExecuteAction(ExeAction: TBasicAction): boolean; function DoUpdateAction(TheAction: TBasicAction): boolean; procedure UpdateActions; virtual; public constructor Create(AOwner: TComponent); override; constructor CreateNew(AOwner: TComponent; Num : Integer{=0}); virtual; destructor Destroy; override; procedure BeforeDestruction; override; class function GetControlClassDefaultSize: TPoint; override; function BigIconHandle: HICON; procedure Close; function CloseQuery: boolean; virtual; procedure DefocusControl(Control: TWinControl; Removing: Boolean); procedure DestroyWnd; override; procedure EnsureVisible(AMoveToTop: Boolean = True); procedure FocusControl(WinControl: TWinControl); function FormIsUpdating: boolean; override; function GetFormImage: TBitmap; function GetRolesForControl(AControl: TControl): TControlRolesForForm; procedure Hide; procedure IntfDropFiles(const FileNames: array of String); procedure IntfHelp(AComponent: TComponent); function IsShortcut(var Message: TLMKey): boolean; virtual; procedure MakeFullyVisible(AMonitor: TMonitor = nil; UseWorkarea: Boolean = False); function NeedParentForAutoSize: Boolean; override; procedure Release; procedure SetFocus; override; function SetFocusedControl(Control: TWinControl): Boolean ; virtual; procedure SetRestoredBounds(ALeft, ATop, AWidth, AHeight: integer); procedure Show; function ShowModal: Integer; virtual; procedure ShowOnTop; function SmallIconHandle: HICON; function WantChildKey(Child : TControl; var Message : TLMessage): Boolean; virtual; // handlers procedure AddHandlerFirstShow(OnFirstShowHandler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveAllHandlersOfObject(AnObject: TObject); override; procedure RemoveHandlerFirstShow(OnFirstShowHandler: TNotifyEvent); procedure AddHandlerClose(OnCloseHandler: TCloseEvent; AsLast: Boolean=true); procedure RemoveHandlerClose(OnCloseHandler: TCloseEvent); procedure AddHandlerCreate(OnCreateHandler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveHandlerCreate(OnCreateHandler: TNotifyEvent); public // drag and dock procedure Dock(NewDockSite: TWinControl; ARect: TRect); override; public property Active: Boolean read FActive; property ActiveControl: TWinControl read FActiveControl write SetActiveControl; property ActiveDefaultControl: TControl read FActiveDefaultControl write SetActiveDefaultControl; property AllowDropFiles: Boolean read FAllowDropFiles write SetAllowDropFiles default False; property BorderIcons: TBorderIcons read FBorderIcons write SetBorderIcons default [biSystemMenu, biMinimize, biMaximize]; property BorderStyle: TFormBorderStyle read FFormBorderStyle write SetFormBorderStyle default bsSizeable; property CancelControl: TControl read FCancelControl write SetCancelControl; property Caption stored IsForm; property Color default clBtnFace; property DefaultControl: TControl read FDefaultControl write SetDefaultControl; property DefaultMonitor: TDefaultMonitor read FDefaultMonitor write FDefaultMonitor default dmActiveForm; property Designer: TIDesigner read FDesigner write SetDesigner; property FormState: TFormState read FFormState; property FormStyle: TFormStyle read FFormStyle write SetFormStyle default fsNormal; property HelpFile: string read FHelpFile write FHelpFile stored IsHelpFileStored; property Icon: TIcon read FIcon write SetIcon stored IsIconStored; property KeyPreview: Boolean read FKeyPreview write FKeyPreview stored IsKeyPreviewStored default False; property Menu : TMainMenu read FMenu write SetMenu; property ModalResult : TModalResult read FModalResult write SetModalResult; property Monitor: TMonitor read GetMonitor; property OnActivate: TNotifyEvent read FOnActivate write FOnActivate; property OnClose: TCloseEvent read FOnClose write FOnClose stored IsForm; property OnCloseQuery : TCloseQueryEvent read FOnCloseQuery write FOnCloseQuery stored IsForm; property OnCreate: TNotifyEvent read FOnCreate write FOnCreate; property OnDeactivate: TNotifyEvent read FOnDeactivate write FOnDeactivate; property OnDestroy: TNotifyEvent read FOnDestroy write FOnDestroy; property OnDropFiles: TDropFilesEvent read FOnDropFiles write FOnDropFiles; property OnHelp: THelpEvent read FOnHelp write FOnHelp; property OnHide: TNotifyEvent read FOnHide write FOnHide; property OnResize stored IsForm; property OnShortcut: TShortcutEvent read FOnShortcut write FOnShortcut; property OnShow: TNotifyEvent read FOnShow write FOnShow; property OnWindowStateChange: TNotifyEvent read fOnWindowStateChange write fOnWindowStateChange; property ParentFont default False; property PixelsPerInch: Longint read GetPixelsPerInch write FPixelsPerInch stored False; property Position: TPosition read FPosition write SetPosition default poDesigned; property RestoredLeft: integer read GetRestoredLeft; property RestoredTop: integer read GetRestoredTop; property RestoredWidth: integer read FRestoredWidth; property RestoredHeight: integer read FRestoredHeight; property ShowInTaskBar: TShowInTaskbar read FShowInTaskbar write SetShowInTaskBar default stDefault; property Visible stored VisibleIsStored default false; property WindowState: TWindowState read FWindowState write SetWindowState default wsNormal; end; TCustomFormClass = class of TCustomForm; { TForm } TForm = class(TCustomForm) private FClientHandle: HWND; FLCLVersion: string; function LCLVersionIsStored: boolean; protected procedure CreateWnd; override; procedure Loaded; override; public constructor Create(TheOwner: TComponent); override; property ClientHandle: HWND read FClientHandle; property DockManager; published property Action; property ActiveControl; property Align; property AllowDropFiles; property AutoScroll; property AutoSize; property BiDiMode; property BorderIcons; property BorderStyle; property BorderWidth; property Caption; property ChildSizing; property ClientHeight; property ClientWidth; property Color; property Constraints; property DefaultMonitor; property DockSite; property DragKind; property DragMode; property Enabled; property Font; property FormStyle; property HelpFile; property Icon; property KeyPreview; property Menu; property OnActivate; property OnChangeBounds; property OnClick; property OnClose; property OnCloseQuery; property OnCreate; property OnDblClick; property OnDeactivate; property OnDestroy; property OnDockDrop; property OnDockOver; property OnDragDrop; property OnDragOver; property OnDropFiles; property OnEndDock; property OnGetSiteInfo; property OnHelp; property OnHide; property OnKeyDown; property OnKeyPress; property OnKeyUp; property OnMouseDown; property OnMouseMove; property OnMouseUp; property OnMouseWheel; property OnMouseWheelDown; property OnMouseWheelUp; property OnPaint; property OnResize; property OnShortCut; property OnShow; property OnShowHint; property OnStartDock; property OnUnDock; property OnUTF8KeyPress; property OnWindowStateChange; property ParentBiDiMode; property ParentFont; property PixelsPerInch; property PopupMenu; property Position; property SessionProperties; property ShowHint; property ShowInTaskBar; property UseDockManager; property LCLVersion: string read FLCLVersion write FLCLVersion stored LCLVersionIsStored; property Visible; property WindowState; end; TFormClass = class of TForm; { TCustomDockForm } TCustomDockForm = class(TCustomForm) protected procedure DoAddDockClient(Client: TControl; const ARect: TRect); override; procedure DoRemoveDockClient(Client: TControl); override; procedure GetSiteInfo(Client: TControl; var InfluenceRect: TRect; MousePos: TPoint; var CanDock: Boolean); override; procedure Loaded; override; public constructor Create(TheOwner: TComponent); override; property AutoScroll default False; property BorderStyle default bsSizeToolWin; property FormStyle default fsStayOnTop; published property PixelsPerInch; end; { THintWindow } THintWindow = class(TCustomForm) private FActivating: Boolean; FAutoHide : Boolean; FAutoHideTimer : TComponent; FHideInterval : Integer; procedure SetAutoHide(Value : Boolean); procedure AutoHideHint(Sender : TObject); procedure SetHideInterval(Value : Integer); protected class procedure WSRegisterClass; override; procedure DoShowWindow; override; public constructor Create(AOwner: TComponent); override; destructor Destroy; override; procedure ActivateHint(ARect: TRect; const AHint: String); virtual; procedure ActivateHintData(ARect: TRect; const AHint: String; AData: pointer); virtual; function CalcHintRect(MaxWidth: Integer; const AHint: String; AData: Pointer): TRect; virtual; procedure ReleaseHandle; procedure Paint; override; class function GetControlClassDefaultSize: TPoint; override; public property AutoHide : Boolean read FAutoHide write SetAutoHide; property HideInterval : Integer read FHideInterval write SetHideInterval; end; THintWindowClass = class of THintWindow; { TMonitor } TMonitor = class(TObject) private FHandle: HMONITOR; FMonitorNum: Integer; function GetInfo(out Info: TMonitorInfo): Boolean; {inline; fpc bug - compilation error with inline} function GetLeft: Integer; function GetHeight: Integer; function GetTop: Integer; function GetWidth: Integer; function GetBoundsRect: TRect; function GetWorkareaRect: TRect; function GetPrimary: Boolean; public property Handle: HMONITOR read FHandle; property MonitorNum: Integer read FMonitorNum; property Left: Integer read GetLeft; property Height: Integer read GetHeight; property Top: Integer read GetTop; property Width: Integer read GetWidth; property BoundsRect: TRect read GetBoundsRect; property WorkareaRect: TRect read GetWorkareaRect; property Primary: Boolean read GetPrimary; end; { TMonitorList } TMonitorList = class(TList) private function GetItem(AIndex: Integer): TMonitor; procedure SetItem(AIndex: Integer; const AValue: TMonitor); protected procedure Notify(Ptr: Pointer; Action: TListNotification); override; public property Items[AIndex: Integer]: TMonitor read GetItem write SetItem; default; end; { TScreen } PCursorRec = ^TCursorRec; TCursorRec = record Next: PCursorRec; Index: Integer; Handle: HCURSOR; end; TScreenFormEvent = procedure(Sender: TObject; Form: TCustomForm) of object; TScreenActiveFormChangedEvent = procedure(Sender: TObject; LastForm: TCustomForm) of object; TScreenControlEvent = procedure(Sender: TObject; LastControl: TControl) of object; TScreenNotification = ( snFormAdded, snRemoveForm, snActiveControlChanged, snActiveFormChanged ); TMonitorDefaultTo = (mdNearest, mdNull, mdPrimary); { TScreen } TScreen = class(TLCLComponent) private FActiveControl: TWinControl; FActiveCustomForm: TCustomForm; FActiveForm: TForm; FCursor: TCursor; FCursorMap: TMap; FCustomForms: TList; FCustomFormsZOrdered: TList; FDefaultCursor: HCURSOR; FHintFont: TFont; FFocusedForm: TCustomForm; FFonts : TStrings; FFormList: TList; FDataModuleList: TList; FIconFont: TFont; FMenuFont: TFont; FScreenHandlers: array[TScreenNotification] of TMethodList; FLastActiveControl: TWinControl; FLastActiveCustomForm: TCustomForm; FMonitors: TMonitorList; FOnActiveControlChange: TNotifyEvent; FOnActiveFormChange: TNotifyEvent; FPixelsPerInch : integer; FSaveFocusedList: TList; FSystemFont: TFont; procedure DeleteCursor(AIndex: Integer); procedure DestroyCursors; procedure DestroyMonitors; function GetCursors(AIndex: Integer): HCURSOR; function GetCustomFormCount: Integer; function GetCustomFormZOrderCount: Integer; function GetCustomForms(Index: Integer): TCustomForm; function GetCustomFormsZOrdered(Index: Integer): TCustomForm; function GetDataModuleCount: Integer; function GetDataModules(AIndex: Integer): TDataModule; function GetDesktopHeight: Integer; function GetDesktopWidth: Integer; function GetFonts : TStrings; function GetFormCount: Integer; function GetForms(IIndex: Integer): TForm; function GetHeight : Integer; function GetMonitor(Index: Integer): TMonitor; function GetMonitorCount: Integer; function GetPrimaryMonitor: TMonitor; function GetWidth : Integer; procedure AddForm(AForm: TCustomForm); procedure RemoveForm(AForm: TCustomForm); procedure SetCursor(const AValue: TCursor); procedure SetCursors(AIndex: Integer; const AValue: HCURSOR); procedure SetHintFont(const AValue: TFont); procedure SetIconFont(const AValue: TFont); procedure SetMenuFont(const AValue: TFont); procedure SetSystemFont(const AValue: TFont); procedure UpdateLastActive; procedure UpdateMonitors; procedure RestoreLastActive; procedure AddHandler(HandlerType: TScreenNotification; const Handler: TMethod; AsLast: Boolean); procedure RemoveHandler(HandlerType: TScreenNotification; const Handler: TMethod); procedure DoAddDataModule(DataModule: TDataModule); procedure DoRemoveDataModule(DataModule: TDataModule); protected function GetHintFont: TFont; virtual; function GetIconFont: TFont; virtual; function GetMenuFont: TFont; virtual; function GetSystemFont: TFont; virtual; public constructor Create(AOwner : TComponent); override; destructor Destroy; override; function CustomFormIndex(AForm: TCustomForm): integer; function FormIndex(AForm: TForm): integer; function CustomFormZIndex(AForm: TCustomForm): integer; procedure MoveFormToFocusFront(ACustomForm: TCustomForm); procedure MoveFormToZFront(ACustomForm: TCustomForm); function GetCurrentModalForm: TCustomForm; function GetCurrentModalFormZIndex: Integer; function CustomFormBelongsToActiveGroup(AForm: TCustomForm): Boolean; function FindForm(const FormName: string): TCustomForm; function FindDataModule(const DataModuleName: string): TDataModule; procedure UpdateScreen; // handler procedure AddHandlerFormAdded(OnFormAdded: TScreenFormEvent; AsLast: Boolean=true); procedure RemoveHandlerFormAdded(OnFormAdded: TScreenFormEvent); procedure AddHandlerRemoveForm(OnRemoveForm: TScreenFormEvent; AsLast: Boolean=true); procedure RemoveHandlerRemoveForm(OnRemoveForm: TScreenFormEvent); procedure AddHandlerActiveControlChanged( OnActiveControlChanged: TScreenControlEvent; AsLast: Boolean=true); procedure RemoveHandlerActiveControlChanged( OnActiveControlChanged: TScreenControlEvent); procedure AddHandlerActiveFormChanged( OnActiveFormChanged: TScreenActiveFormChangedEvent; AsLast: Boolean=true); procedure RemoveHandlerActiveFormChanged( OnActiveFormChanged: TScreenActiveFormChangedEvent); procedure RemoveAllHandlersOfObject(AnObject: TObject); override; function DisableForms(SkipForm: TCustomForm; DisabledList: TList = nil): TList; procedure EnableForms(var AFormList: TList); function MonitorFromPoint(const Point: TPoint; MonitorDefault: TMonitorDefaultTo = mdNearest): TMonitor; function MonitorFromRect(const Rect: TRect; MonitorDefault: TMonitorDefaultTo = mdNearest): TMonitor; function MonitorFromWindow(const Handle: THandle; MonitorDefault: TMonitorDefaultTo = mdNearest): TMonitor; public property ActiveControl: TWinControl read FActiveControl; property ActiveCustomForm: TCustomForm read FActiveCustomForm; property ActiveForm: TForm read FActiveForm; property Cursor: TCursor read FCursor write SetCursor; property Cursors[Index: Integer]: HCURSOR read GetCursors write SetCursors; property CustomFormCount: Integer read GetCustomFormCount; property CustomForms[Index: Integer]: TCustomForm read GetCustomForms; property CustomFormZOrderCount: Integer read GetCustomFormZOrderCount; property CustomFormsZOrdered[Index: Integer]: TCustomForm read GetCustomFormsZOrdered; property DesktopHeight: Integer read GetDesktopHeight; property DesktopWidth: Integer read GetDesktopWidth; property FocusedForm: TCustomForm read FFocusedForm; property FormCount: Integer read GetFormCount; property Forms[Index: Integer]: TForm read GetForms; property DataModuleCount: Integer read GetDataModuleCount; property DataModules[Index: Integer]: TDataModule read GetDataModules; property HintFont: TFont read GetHintFont write SetHintFont; property IconFont: TFont read GetIconFont write SetIconFont; property MenuFont: TFont read GetMenuFont write SetMenuFont; property SystemFont: TFont read GetSystemFont write SetSystemFont; property Fonts: TStrings read GetFonts; property Height: Integer read Getheight; property MonitorCount: Integer read GetMonitorCount; property Monitors[Index: Integer]: TMonitor read GetMonitor; property PixelsPerInch: integer read FPixelsPerInch; property PrimaryMonitor: TMonitor read GetPrimaryMonitor; property Width: Integer read GetWidth; property OnActiveControlChange: TNotifyEvent read FOnActiveControlChange write FOnActiveControlChange; property OnActiveFormChange: TNotifyEvent read FOnActiveFormChange write FOnActiveFormChange; end; { TApplication } TQueryEndSessionEvent = procedure (var Cancel : Boolean) of object; TExceptionEvent = procedure (Sender: TObject; E: Exception) of object; TIdleEvent = procedure (Sender: TObject; var Done: Boolean) of object; TOnUserInputEvent = procedure(Sender: TObject; Msg: Cardinal) of object; TDataEvent = procedure (Data: PtrInt) of object; // application hint stuff TCMHintShow = record Msg: Cardinal; Reserved: WPARAM; HintInfo: PHintInfo; Result: LRESULT; end; TCMHintShowPause = record Msg: Cardinal; WasActive: Integer; Pause: PInteger; Result: LRESULT; end; TAppHintTimerType = (ahttNone, ahttShowHint, ahttHideHint, ahttReshowHint); TShowHintEvent = procedure (var HintStr: string; var CanShow: Boolean; var HintInfo: THintInfo) of object; THintInfoAtMouse = record MousePos: TPoint; Control: TControl; ControlHasHint: boolean; end; TApplicationFlag = ( AppWaiting, AppIdleEndSent, AppHandlingException, AppNoExceptionMessages, AppActive, // application has focus AppDestroying, AppDoNotCallAsyncQueue, AppInitialized // initialization of application was done ); TApplicationFlags = set of TApplicationFlag; TApplicationNavigationOption = ( anoTabToSelectNext, anoReturnForDefaultControl, anoEscapeForCancelControl, anoF1ForHelp, anoArrowToSelectNextInParent ); TApplicationNavigationOptions = set of TApplicationNavigationOption; TApplicationHandlerType = ( ahtIdle, ahtIdleEnd, ahtKeyDownBefore, // before interface and LCL ahtKeyDownAfter, // after interface and LCL ahtActivate, ahtDeactivate, ahtUserInput, ahtException, ahtEndSession, ahtQueryEndSession, ahtMinimize, ahtRestore, ahtDropFiles, ahtHelp, ahtHint, ahtShowHint ); PAsyncCallQueueItem = ^TAsyncCallQueueItem; TAsyncCallQueueItem = record Method: TDataEvent; Data: PtrInt; NextItem: PAsyncCallQueueItem; end; TApplicationType = ( atDefault, atDesktop, atHandheld, atPDA, atSmartphone ); TApplicationShowGlyphs = ( sbgAlways, // show them always (default) sbgNever, // show them never sbgSystem // show them depending on OS ); { TApplication } TApplication = class(TCustomApplication) private FApplicationHandlers: array[TApplicationHandlerType] of TMethodList; FApplicationType: TApplicationType; FCaptureExceptions: boolean; FComponentsToRelease: TAvgLvlTree; FCreatingForm: TForm;// currently created form (CreateForm), candidate for MainForm FFindGlobalComponentEnabled: boolean; FFlags: TApplicationFlags; FHint: string; FHintColor: TColor; FHintControl: TControl; FHintHidePause: Integer; FHintHidePausePerChar: Integer; FHintPause: Integer; FHintRect: TRect; FHintShortCuts: Boolean; FHintShortPause: Integer; FHintTimer: TCustomTimer; FHintTimerType: TAppHintTimerType; FHintWindow: THintWindow; FIcon: TIcon; FBigIconHandle: HICON; FShowButtonGlyphs: TApplicationShowGlyphs; FShowMenuGlyphs: TApplicationShowGlyphs; FSmallIconHandle: HICON; FIdleLockCount: Integer; FFormList: TList; FLastKeyDownSender: TWinControl; FLastKeyDownKey: Word; FLastKeyDownShift: TShiftState; FMainForm : TForm; FMouseControl: TControl; FNavigation: TApplicationNavigationOptions; FOldExceptProc: TExceptProc; FOldExitProc: Pointer; FOnActionExecute: TActionEvent; FOnActionUpdate: TActionEvent; FOnActivate: TNotifyEvent; FOnDeactivate: TNotifyEvent; FOnDestroy: TNotifyEvent; FOnDropFiles: TDropFilesEvent; FOnHelp: THelpEvent; FOnHint: TNotifyEvent; FOnIdle: TIdleEvent; FOnIdleEnd: TNotifyEvent; FOnEndSession : TNotifyEvent; FOnQueryEndSession : TQueryEndSessionEvent; FOnMinimize: TNotifyEvent; FOnRestore: TNotifyEvent; FOnShortcut: TShortcutEvent; FOnShowHint: TShowHintEvent; FOnUserInput: TOnUserInputEvent; FAsyncCallQueue: PAsyncCallQueueItem; FAsyncCallQueueLast: PAsyncCallQueueItem; FShowHint: Boolean; FShowMainForm: Boolean; FLastMousePos: TPoint; FLastMouseControl: TControl; FLastMouseControlValid: Boolean; FBidiMode: TBiDiMode; FRestoreStayOnTop: TList; procedure DoOnIdleEnd; function GetActive: boolean; function GetCurrentHelpFile: string; function GetExename: String; function GetTitle: string; procedure FreeIconHandles; procedure IconChanged(Sender: TObject); function GetControlAtMouse: TControl; procedure SetBidiMode ( const AValue : TBiDiMode ) ; procedure SetFlags(const AValue: TApplicationFlags); procedure SetNavigation(const AValue: TApplicationNavigationOptions); procedure SetShowButtonGlyphs(const AValue: TApplicationShowGlyphs); procedure SetShowMenuGlyphs(const AValue: TApplicationShowGlyphs); procedure UpdateMouseControl(NewMouseControl: TControl); procedure UpdateMouseHint(CurrentControl: TControl); procedure SetCaptureExceptions(const AValue: boolean); procedure SetHint(const AValue: string); procedure SetHintColor(const AValue: TColor); procedure SetIcon(AValue: TIcon); procedure SetShowHint(const AValue: Boolean); procedure StopHintTimer; function ValidateHelpSystem: Boolean; procedure WndProc(var AMessage : TLMessage); function DispatchAction(Msg: Longint; Action: TBasicAction): Boolean; procedure AddHandler(HandlerType: TApplicationHandlerType; const Handler: TMethod; AsLast: Boolean); procedure RemoveHandler(HandlerType: TApplicationHandlerType; const Handler: TMethod); procedure RunLoop; procedure Activate; procedure Deactivate(Data: PtrInt = 0); protected function GetConsoleApplication: boolean; override; procedure NotifyIdleHandler(var Done: Boolean); procedure NotifyIdleEndHandler; procedure NotifyActivateHandler; procedure NotifyDeactivateHandler; procedure NotifyCustomForms(Msg: Word); function IsHintMsg(var Msg: TMsg): Boolean; function DoOnHelp(Command: Word; Data: PtrInt; var CallHelp: Boolean): Boolean; virtual; procedure DoOnMouseMove; virtual; procedure ShowHintWindow(const Info: THintInfoAtMouse); procedure OnHintTimer(Sender: TObject); procedure SetTitle(const AValue: String); override; procedure StartHintTimer(Interval: integer; TimerType: TAppHintTimerType); procedure UpdateVisible; procedure DoIdleActions; procedure MenuPopupHandler(Sender: TObject); procedure ProcessAsyncCallQueue; procedure FreeComponent(Data: PtrInt); procedure ReleaseComponents; procedure DoBeforeFinalization; function GetParams(Index: Integer): string; override; public constructor Create(AOwner: TComponent); override; destructor Destroy; override; procedure ControlDestroyed(AControl: TControl); function BigIconHandle: HIcon; function SmallIconHandle: HIcon; procedure BringToFront; procedure CreateForm(InstanceClass: TComponentClass; out Reference); procedure UpdateMainForm(AForm: TForm); procedure QueueAsyncCall(const AMethod: TDataEvent; Data: PtrInt); procedure ReleaseComponent(AComponent: TComponent); function ExecuteAction(ExeAction: TBasicAction): Boolean; override; function UpdateAction(TheAction: TBasicAction): Boolean; override; procedure HandleException(Sender: TObject); override; procedure HandleMessage; function HelpCommand(Command: Word; Data: PtrInt): Boolean; function HelpContext(Sender: TObject; const Position: TPoint; Context: THelpContext): Boolean; function HelpContext(Context: THelpContext): Boolean; function HelpKeyword(Sender: TObject; const Position: TPoint; const Keyword: String): Boolean; function HelpKeyword(const Keyword: String): Boolean; procedure ShowHelpForObject(Sender: TObject); procedure RemoveStayOnTop; procedure RestoreStayOnTop; function IsWaiting: boolean; procedure CancelHint; procedure HideHint; procedure HintMouseMessage(Control : TControl; var AMessage: TLMessage); procedure Initialize; override; function MessageBox(Text, Caption: PChar; Flags: Longint): Integer; procedure Minimize; procedure Restore; procedure Notification(AComponent: TComponent; Operation: TOperation); override; procedure ProcessMessages; procedure Idle(Wait: Boolean); procedure Run; procedure ShowException(E: Exception); override; procedure Terminate; override; procedure DisableIdleHandler; procedure EnableIdleHandler; procedure NotifyUserInputHandler(Msg: Cardinal); procedure NotifyKeyDownBeforeHandler(Sender: TObject; var Key: Word; Shift: TShiftState); procedure NotifyKeyDownHandler(Sender: TObject; var Key: Word; Shift: TShiftState); procedure ControlKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState); procedure ControlKeyUp(Sender: TObject; var Key: Word; Shift: TShiftState); procedure AddOnIdleHandler(Handler: TIdleEvent; AsLast: Boolean=true); procedure RemoveOnIdleHandler(Handler: TIdleEvent); procedure AddOnIdleEndHandler(Handler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveOnIdleEndHandler(Handler: TNotifyEvent); procedure AddOnUserInputHandler(Handler: TOnUserInputEvent; AsLast: Boolean=true); procedure RemoveOnUserInputHandler(Handler: TOnUserInputEvent); procedure AddOnKeyDownBeforeHandler(Handler: TKeyEvent; AsLast: Boolean=true); procedure RemoveOnKeyDownBeforeHandler(Handler: TKeyEvent); procedure AddOnKeyDownHandler(Handler: TKeyEvent; AsLast: Boolean=true); procedure RemoveOnKeyDownHandler(Handler: TKeyEvent); procedure AddOnActivateHandler(Handler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveOnActivateHandler(Handler: TNotifyEvent); procedure AddOnDeactivateHandler(Handler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveOnDeactivateHandler(Handler: TNotifyEvent); procedure AddOnExceptionHandler(Handler: TExceptionEvent; AsLast: Boolean=true); procedure RemoveOnExceptionHandler(Handler: TExceptionEvent); procedure AddOnEndSessionHandler(Handler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveOnEndSessionHandler(Handler: TNotifyEvent); procedure AddOnQueryEndSessionHandler(Handler: TQueryEndSessionEvent; AsLast: Boolean=true); procedure RemoveOnQueryEndSessionHandler(Handler: TQueryEndSessionEvent); procedure AddOnMinimizeHandler(Handler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveOnMinimizeHandler(Handler: TNotifyEvent); procedure AddOnRestoreHandler(Handler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveOnRestoreHandler(Handler: TNotifyEvent); procedure AddOnDropFilesHandler(Handler: TDropFilesEvent; AsLast: Boolean=true); procedure RemoveOnDropFilesHandler(Handler: TDropFilesEvent); procedure AddOnHelpHandler(Handler: THelpEvent; AsLast: Boolean=true); procedure RemoveOnHelpHandler(Handler: THelpEvent); procedure AddOnHintHandler(Handler: TNotifyEvent; AsLast: Boolean=true); procedure RemoveOnHintHandler(Handler: TNotifyEvent); procedure AddOnShowHintHandler(Handler: TShowHintEvent; AsLast: Boolean=true); procedure RemoveOnShowHintHandler(Handler: TShowHintEvent); procedure RemoveAllHandlersOfObject(AnObject: TObject); virtual; procedure DoBeforeMouseMessage(CurMouseControl: TControl); function IsShortcut(var Message: TLMKey): boolean; procedure IntfQueryEndSession(var Cancel : Boolean); procedure IntfEndSession; procedure IntfAppMinimize; procedure IntfAppRestore; procedure IntfDropFiles(const FileNames: Array of String); procedure IntfThemeOptionChange(AThemeServices: TThemeServices; AOption: TThemeOption); public procedure DoArrowKey(AControl: TWinControl; var Key: Word; Shift: TShiftState); procedure DoEscapeKey(AControl: TWinControl; var Key: Word; Shift: TShiftState); procedure DoReturnKey(AControl: TWinControl; var Key: Word; Shift: TShiftState); procedure DoTabKey(AControl: TWinControl; var Key: Word; Shift: TShiftState); property Active: boolean read GetActive; property ApplicationType : TApplicationType read FApplicationType write FApplicationType; property BidiMode: TBiDiMode read FBidiMode write SetBidiMode; property CaptureExceptions: boolean read FCaptureExceptions write SetCaptureExceptions; property FindGlobalComponentEnabled: boolean read FFindGlobalComponentEnabled write FFindGlobalComponentEnabled; property Flags: TApplicationFlags read FFlags write SetFlags; //property HelpSystem : IHelpSystem read FHelpSystem; property Hint: string read FHint write SetHint; property HintColor: TColor read FHintColor write SetHintColor; property HintHidePause: Integer read FHintHidePause write FHintHidePause; property HintHidePausePerChar: Integer read FHintHidePausePerChar write FHintHidePausePerChar; property HintPause: Integer read FHintPause write FHintPause; property HintShortCuts: Boolean read FHintShortCuts write FHintShortCuts; property HintShortPause: Integer read FHintShortPause write FHintShortPause; property Icon: TIcon read FIcon write SetIcon; property Navigation: TApplicationNavigationOptions read FNavigation write SetNavigation; property MainForm: TForm read FMainForm; property MouseControl: TControl read FMouseControl; property OnActionExecute: TActionEvent read FOnActionExecute write FOnActionExecute; property OnActionUpdate: TActionEvent read FOnActionUpdate write FOnActionUpdate; property OnActivate: TNotifyEvent read FOnActivate write FOnActivate; property OnDeactivate: TNotifyEvent read FOnDeactivate write FOnDeactivate; property OnIdle: TIdleEvent read FOnIdle write FOnIdle; property OnIdleEnd: TNotifyEvent read FOnIdleEnd write FOnIdleEnd; property OnEndSession: TNotifyEvent read FOnEndSession write FOnEndSession; property OnQueryEndSession: TQueryEndSessionEvent read FOnQueryEndSession write FOnQueryEndSession; property OnMinimize: TNotifyEvent read FOnMinimize write FOnMinimize; property OnRestore: TNotifyEvent read FOnRestore write FOnRestore; property OnDropFiles: TDropFilesEvent read FOnDropFiles write FOnDropFiles; property OnHelp: THelpEvent read FOnHelp write FOnHelp; property OnHint: TNotifyEvent read FOnHint write FOnHint; property OnShortcut: TShortcutEvent read FOnShortcut write FOnShortcut; property OnShowHint: TShowHintEvent read FOnShowHint write FOnShowHint; property OnUserInput: TOnUserInputEvent read FOnUserInput write FOnUserInput; property OnDestroy: TNotifyEvent read FOnDestroy write FOnDestroy; property ShowButtonGlyphs: TApplicationShowGlyphs read FShowButtonGlyphs write SetShowButtonGlyphs default sbgAlways; property ShowMenuGlyphs: TApplicationShowGlyphs read FShowMenuGlyphs write SetShowMenuGlyphs default sbgAlways; property ShowHint: Boolean read FShowHint write SetShowHint; property ShowMainForm: Boolean read FShowMainForm write FShowMainForm default True; property Title: String read GetTitle write SetTitle; end; const DefHintColor = clInfoBk; // default hint window color DefHintPause = 500; // default pause before hint window displays (ms) DefHintShortPause = 0; // default reshow pause DefHintHidePause = 5*DefHintPause; // default pause before hint is hidden (ms) DefHintHidePausePerChar = 200; // added to DefHintHidePause (ms) type { TApplicationProperties } TApplicationProperties = class(TLCLComponent) private FCaptureExceptions: boolean; FHelpFile: string; FHint: string; FHintColor: TColor; FHintHidePause: Integer; FHintPause: Integer; FHintShortCuts: Boolean; FHintShortPause: Integer; FOnDropFiles: TDropFilesEvent; FShowButtonGlyphs: TApplicationShowGlyphs; FShowHint: Boolean; FShowMainForm: Boolean; FShowMenuGlyphs: TApplicationShowGlyphs; FTitle: String; FOnException: TExceptionEvent; FOnIdle: TIdleEvent; FOnIdleEnd: TNotifyEvent; FOnHelp: THelpEvent; FOnHint: TNotifyEvent; FOnShowHint: TShowHintEvent; FOnUserInput: TOnUserInputEvent; FOnEndSession : TNotifyEvent; FOnQueryEndSession : TQueryEndSessionEvent; FOnMinimize : TNotifyEvent; FOnRestore : TNotifyEvent; protected procedure SetCaptureExceptions(const AValue : boolean); procedure SetHelpFile(const AValue : string); procedure SetHint(const AValue : string); procedure SetHintColor(const AValue : TColor); procedure SetHintHidePause(const AValue : Integer); procedure SetHintPause(const AValue : Integer); procedure SetHintShortCuts(const AValue : Boolean); procedure SetHintShortPause(const AValue : Integer); procedure SetShowButtonGlyphs(const AValue: TApplicationShowGlyphs); procedure SetShowMenuGlyphs(const AValue: TApplicationShowGlyphs); procedure SetShowHint(const AValue : Boolean); procedure SetShowMainForm(const AValue: Boolean); procedure SetTitle(const AValue : String); procedure SetOnException(const AValue : TExceptionEvent); procedure SetOnIdle(const AValue : TIdleEvent); procedure SetOnIdleEnd(const AValue : TNotifyEvent); procedure SetOnEndSession(const AValue : TNotifyEvent); procedure SetOnQueryEndSession(const AValue : TQueryEndSessionEvent); procedure SetOnMinimize(const AValue : TNotifyEvent); procedure SetOnRestore(const AValue : TNotifyEvent); procedure SetOnDropFiles(const AValue: TDropFilesEvent); procedure SetOnHelp(const AValue : THelpEvent); procedure SetOnHint(const AValue : TNotifyEvent); procedure SetOnShowHint(const AValue : TShowHintEvent); procedure SetOnUserInput(const AValue : TOnUserInputEvent); public constructor Create(AOwner: TComponent); Override; destructor Destroy; override; published property CaptureExceptions: boolean read FCaptureExceptions write SetCaptureExceptions default True; property HelpFile: string read FHelpFile write SetHelpFile; property Hint: string read FHint write SetHint; property HintColor: TColor read FHintColor write SetHintColor default DefHintColor; property HintHidePause: Integer read FHintHidePause write SetHintHidePause default DefHintHidePause; property HintPause: Integer read FHintPause write SetHintPause default DefHintPause; property HintShortCuts: Boolean read FHintShortCuts write SetHintShortCuts default True; property HintShortPause: Integer read FHintShortPause write SetHintShortPause default DefHintShortPause; property ShowButtonGlyphs: TApplicationShowGlyphs read FShowButtonGlyphs write SetShowButtonGlyphs default sbgAlways; property ShowMenuGlyphs: TApplicationShowGlyphs read FShowMenuGlyphs write SetShowMenuGlyphs default sbgAlways; property ShowHint: Boolean read FShowHint write SetShowHint default True; property ShowMainForm: Boolean read FShowMainForm write SetShowMainForm default True; property Title: String read FTitle write SetTitle; property OnException: TExceptionEvent read FOnException write SetOnException; property OnIdle: TIdleEvent read FOnIdle write SetOnIdle; property OnIdleEnd: TNotifyEvent read FOnIdleEnd write SetOnIdleEnd; property OnEndSession : TNotifyEvent read FOnEndSession write SetOnEndSession; property OnQueryEndSession : TQueryEndSessionEvent read FOnQueryEndSession write SetOnQueryEndSession; property OnMinimize : TNotifyEvent read FOnMinimize write SetOnMinimize; property OnRestore : TNotifyEvent read FOnRestore write SetOnRestore; property OnDropFiles: TDropFilesEvent read FOnDropFiles write SetOnDropFiles; property OnHelp: THelpEvent read FOnHelp write SetOnHelp; property OnHint: TNotifyEvent read FOnHint write SetOnHint; property OnShowHint: TShowHintEvent read FOnShowHint write SetOnShowHint; property OnUserInput: TOnUserInputEvent read FOnUserInput write SetOnUserInput; end; { TIDesigner } TIDesigner = class(TObject) public function IsDesignMsg(Sender: TControl; var Message: TLMessage): Boolean; virtual; abstract; procedure Modified; virtual; abstract; procedure Notification(AComponent: TComponent; Operation: TOperation); virtual; abstract; procedure PaintGrid; virtual; abstract; procedure ValidateRename(AComponent: TComponent; const CurName, NewName: string); virtual; abstract; function GetShiftState: TShiftState; virtual; abstract; procedure SelectOnlyThisComponent(AComponent: TComponent); virtual; abstract; function UniqueName(const BaseName: string): string; virtual; abstract; end; { TFormPropertyStorage - abstract base class } TFormPropertyStorage = class(TControlPropertyStorage) private procedure FormFirstShow(Sender: TObject); procedure FormClose(Sender: TObject; var CloseAction: TCloseAction); public constructor Create(TheOwner: TComponent); override; destructor Destroy; override; end; function KeysToShiftState(Keys: PtrUInt): TShiftState; function KeyDataToShiftState(KeyData: Longint): TShiftState; function ShiftStateToKeys(ShiftState: TShiftState): PtrUInt; function WindowStateToStr(const State: TWindowState): string; function StrToWindowState(const Name: string): TWindowState; type TFocusState = Pointer; function SaveFocusState: TFocusState; procedure RestoreFocusState(FocusState: TFocusState); type TGetDesignerFormEvent = function(AComponent: TComponent): TCustomForm of object; var OnGetDesignerForm: TGetDesignerFormEvent = nil; function GetParentForm(Control:TControl): TCustomForm; function GetFirstParentForm(Control:TControl): TCustomForm; function GetDesignerForm(AComponent: TComponent): TCustomForm; function FindRootDesigner(AComponent: TComponent): TIDesigner; function IsAccel(VK: word; const Str: string): Boolean; procedure NotifyApplicationUserInput(Msg: Cardinal); function GetShortHint(const Hint: string): string; function GetLongHint(const Hint: string): string; var Application: TApplication = nil; Screen: TScreen = nil; ExceptionObject: TExceptObject; HintWindowClass: THintWindowClass = THintWindow; type TMessageBoxFunction = function(Text, Caption : PChar; Flags : Longint) : Integer; var MessageBoxFunction: TMessageBoxFunction = nil; const DefaultBorderIcons : array[TFormBorderStyle] of TBorderIcons = ([], // bsNone [biSystemMenu, biMinimize], // bsSingle [biSystemMenu, biMinimize, biMaximize], // bsSizeable [biSystemMenu], // bsDialog [biSystemMenu, biMinimize], // bsToolWindow [biSystemMenu, biMinimize, biMaximize]); // bsSizeToolWin procedure CreateWidgetset(AWidgetsetClass: TWidgetsetClass); procedure FreeWidgetSet; procedure Register; implementation {$ifdef WinCE} {$define extdecl := cdecl} {$else} {$define extdecl := stdcall} {$endif} uses WSForms; // Widgetset uses circle is allowed var FocusCount: Integer=0; HandlingException: boolean=False; HaltingProgram: boolean=False; procedure Register; begin RegisterComponents('Standard',[TFrame]); RegisterComponents('Additional',[TScrollBox, TApplicationProperties]); end; {------------------------------------------------------------------------------ procedure NotifyApplicationUserInput; ------------------------------------------------------------------------------} procedure NotifyApplicationUserInput(Msg: Cardinal); begin if Application <> nil then Application.NotifyUserInputHandler(Msg); end; //------------------------------------------------------------------------------ procedure ExceptionOccurred(Sender: TObject; Addr:Pointer; FrameCount: Longint; Frames: PPointer); var FrameNumber: integer; Begin DebugLn('[FORMS.PP] ExceptionOccurred '); if HaltingProgram or HandlingException then Halt; HandlingException:=true; if Sender<>nil then begin DebugLn(' Sender=',Sender.ClassName); if Sender is Exception then begin DebugLn(' Exception=',Exception(Sender).Message); DebugLn(' Stack trace:'); DebugLn(BackTraceStrFunc(ExceptAddr)); for FrameNumber := 0 to FrameCount-1 do DebugLn(BackTraceStrFunc(Frames[FrameNumber])); end; end else DebugLn(' Sender=nil'); if Application<>nil then Application.HandleException(Sender); HandlingException:=false; end; procedure BeforeFinalization; // This is our ExitProc handler. begin Application.DoBeforeFinalization; end; //------------------------------------------------------------------------------ // The focus state is just the focus count for now. To save having to allocate // anything, I just map the Integer to the TFocusState. function SaveFocusState: TFocusState; begin Result := TFocusState(PtrInt(FocusCount)); end; procedure RestoreFocusState(FocusState: TFocusState); begin FocusCount := integer(PtrUInt(FocusState)); end; {function SendFocusMessage(Window: HWnd; Msg: Word): Boolean; var Count: Integer; begin Count := FocusCount; SendMessage(Window, Msg, 0, 0); Result := (FocusCount = Count); end;} //------------------------------------------------------------------------------ function KeysToShiftState(Keys: PtrUInt): TShiftState; begin Result := []; if Keys and MK_Shift <> 0 then Include(Result, ssShift); if Keys and MK_Control <> 0 then Include(Result, ssCtrl); if Keys and MK_LButton <> 0 then Include(Result, ssLeft); if Keys and MK_RButton <> 0 then Include(Result, ssRight); if Keys and MK_MButton <> 0 then Include(Result, ssMiddle); if Keys and MK_XBUTTON1 <> 0 then Include(Result, ssExtra1); if Keys and MK_XBUTTON2 <> 0 then Include(Result, ssExtra2); if GetKeyState(VK_MENU) < 0 then Include(Result, ssAlt); end; function KeyDataToShiftState(KeyData: Longint): TShiftState; begin Result := MsgKeyDataToShiftState(KeyData); end; function ShiftStateToKeys(ShiftState: TShiftState): PtrUInt; begin Result := 0; if ssShift in ShiftState then Result := Result or MK_SHIFT; if ssCtrl in ShiftState then Result := Result or MK_CONTROL; if ssLeft in ShiftState then Result := Result or MK_LBUTTON; if ssRight in ShiftState then Result := Result or MK_RBUTTON; if ssMiddle in ShiftState then Result := Result or MK_MBUTTON; if ssExtra1 in ShiftState then Result := Result or MK_XBUTTON1; if ssExtra2 in ShiftState then Result := Result or MK_XBUTTON2; end; function WindowStateToStr(const State: TWindowState): string; begin Result:=GetEnumName(TypeInfo(TWindowState),ord(State)); end; function StrToWindowState(const Name: string): TWindowState; begin Result:=TWindowState(GetEnumValueDef(TypeInfo(TWindowState),Name, ord(wsNormal))); end; //------------------------------------------------------------------------------ function GetParentForm(Control: TControl): TCustomForm; begin while Control.Parent <> nil do Control := Control.Parent; if Control is TCustomForm then Result := TCustomForm(Control) else Result := nil; end; //------------------------------------------------------------------------------ function IsAccel(VK: word; const Str: string): Boolean; var lPos: integer; begin lPos:=1; while (lPos'&' then begin inc(lPos); end else begin inc(lPos); if (Str[lPos]<>'&') then begin Result := UpCase(Str[lPos]) = UpCase(char(VK)); exit; end else begin // skip double && inc(lPos); end; end; end; Result := false; end; //============================================================================== function FindRootDesigner(AComponent: TComponent): TIDesigner; var Form: TCustomForm; begin Result:=nil; Form:=GetDesignerForm(AComponent); if Form<>nil then Result:=Form.Designer; end; function GetFirstParentForm(Control: TControl): TCustomForm; begin while (Control<>nil) and (not (Control is TCustomForm)) do Control:=Control.Parent; Result:=TCustomForm(Control); end; function GetDesignerForm(AComponent: TComponent): TCustomForm; var OwnerComponent: TComponent; begin Result:=nil; if AComponent=nil then exit; if Assigned(OnGetDesignerForm) then Result:=OnGetDesignerForm(AComponent) else begin OwnerComponent:=AComponent; while OwnerComponent.Owner<>nil do OwnerComponent:=OwnerComponent.Owner; if OwnerComponent is TCustomForm then Result:=TCustomForm(OwnerComponent); end; end; function SendApplicationMsg(Msg: Cardinal; WParam: WParam; LParam: LParam): Longint; var AMessage: TLMessage; begin if Application<>nil then begin AMessage.Msg := Msg; AMessage.WParam := WParam; AMessage.LParam := LParam; { Can't simply use SendMessage, as the Application does not necessarily have a handle } Application.WndProc(AMessage); Result := AMessage.Result; end else Result := 0; end; procedure IfOwnerIsFormThenDesignerModified(AComponent: TComponent); begin if (AComponent<>nil) and (AComponent.Owner<>nil) and ([csDesigning,csLoading]*AComponent.ComponentState=[csDesigning]) and (AComponent.Owner is TForm) and (TForm(AComponent.Owner).Designer <> nil) then TForm(AComponent.Owner).Designer.Modified; end; function GetShortHint(const Hint: string): string; var I: Integer; begin I := Pos('|', Hint); if I = 0 then Result := Hint else Result := Copy(Hint, 1, I - 1); end; function GetLongHint(const Hint: string): string; var I: Integer; begin I := Pos('|', Hint); if I = 0 then Result := Hint else Result := Copy(Hint, I + 1, Maxint); end; procedure CreateWidgetset(AWidgetsetClass: TWidgetsetClass); begin //debugln('CreateWidgetset'); CallInterfaceInitializationHandlers; WidgetSet := AWidgetsetClass.Create; end; procedure FreeWidgetSet; begin //debugln('FreeWidgetSet'); if Screen <> nil then begin Screen.DestroyCursors; Screen.DestroyMonitors; end; if Application=nil then exit; Application.Free; Application:=nil; FreeAllClipBoards; CallInterfaceFinalizationHandlers; WidgetSet.Free; WidgetSet:=nil; end; //============================================================================== {$I controlscrollbar.inc} {$I scrollingwincontrol.inc} {$I scrollbox.inc} {$I customframe.inc} {$I customform.inc} {$I customdockform.inc} {$I monitor.inc} {$I screen.inc} {$I application.inc} {$I applicationproperties.inc} {$I hintwindow.inc} //============================================================================== initialization {$INCLUDE cursors.lrs} RegisterPropertyToSkip(TForm, 'OldCreateOrder', 'VCL compatibility property', ''); LCLProc.OwnerFormDesignerModifiedProc:=@IfOwnerIsFormThenDesignerModified; Screen:=TScreen.Create(nil); Application:=TApplication.Create(nil); finalization //DebugLn('forms.pp - finalization section'); LCLProc.OwnerFormDesignerModifiedProc:=nil; HintWindowClass:=nil; FreeThenNil(Application); FreeThenNil(Screen); end.