* Added two way comunication to LHelpControl

* Made using lhelp easier so that it's only needed to install ChmHelpPkg and copy chms to docs/html * lhelp will be built by ChmHelpPkg if it doesn't exist * added helpful msg when F1 is pushed and no chms can be found git-svn-id: trunk@21688 -
2025-10-31 01:04:50 +01:00 · 2009-09-13 18:34:50 +00:00 · 2009-09-13 18:34:50 +00:00 · 08ed127d0f
commit 08ed127d0f
parent efdffe51ba
13 changed files with 797 additions and 555 deletions
--- a/.gitattributes
+++ b/.gitattributes
@ -57,9 +57,9 @@ components/chmhelp/lhelp/images/table_open.png -text
 components/chmhelp/lhelp/lhelp.ico -text svneol=unset#image/icon
 components/chmhelp/lhelp/lhelp.lpi svneol=native#text/plain
 components/chmhelp/lhelp/lhelp.lpr svneol=native#text/plain
-components/chmhelp/lhelp/lhelp.manifest -text svneol=native#text/plain
-components/chmhelp/lhelp/lhelp.rc -text svneol=native#text/plain
-components/chmhelp/lhelp/lhelpcore.lfm -text svneol=native#text/plain
+components/chmhelp/lhelp/lhelp.manifest svneol=native#text/plain
+components/chmhelp/lhelp/lhelp.rc svneol=native#text/plain
+components/chmhelp/lhelp/lhelpcore.lfm svneol=native#text/plain
 components/chmhelp/lhelp/lhelpcore.lrs svneol=native#text/pascal
 components/chmhelp/lhelp/lhelpcore.pas svneol=native#text/plain
 components/chmhelp/lhelp/lnethttpdataprovider.pas svneol=native#text/plain
--- a/components/chmhelp/democontrol/project1.lpi
+++ b/components/chmhelp/democontrol/project1.lpi
@ -2,15 +2,17 @@
 <CONFIG>
  <ProjectOptions>
    <PathDelim Value="\"/>
-    <Version Value="6"/>
+    <Version Value="7"/>
    <General>
+      <Flags>
+        <LRSInOutputDirectory Value="False"/>
+      </Flags>
      <SessionStorage Value="InProjectDir"/>
      <MainUnit Value="0"/>
      <TargetFileExt Value=""/>
    </General>
    <PublishOptions>
      <Version Value="2"/>
-      <DestinationDirectory Value="$(TestDir)\publishedproject\"/>
      <IgnoreBinaries Value="False"/>
      <IncludeFileFilter Value="*.(pas|pp|inc|lfm|lpr|lrs|lpi|lpk|sh|xml)"/>
      <ExcludeFileFilter Value="*.(bak|ppu|ppw|o|so);*~;backup"/>
@ -19,7 +21,7 @@
      <local>
        <FormatVersion Value="1"/>
        <LaunchingApplication PathPlusParams="\usr\X11R6\bin\xterm -T 'Lazarus Run Output' -e $(LazarusDir)\tools\runwait.sh $(TargetCmdLine)"/>
-        <Display Use="True" Value="192.168.0.250:0"/>
+        <Display Value="192.168.0.250:0"/>
      </local>
    </RunParams>
    <RequiredPackages Count="2">
@ -38,9 +40,9 @@
      </Unit0>
      <Unit1>
        <Filename Value="unit1.pas"/>
-        <ComponentName Value="Form1"/>
        <IsPartOfProject Value="True"/>
-        <ResourceFilename Value="unit1.lrs"/>
+        <ComponentName Value="Form1"/>
+        <ResourceBaseClass Value="Form"/>
        <UnitName Value="Unit1"/>
      </Unit1>
    </Units>
--- a/components/chmhelp/democontrol/unit1.lfm
+++ b/components/chmhelp/democontrol/unit1.lfm
@ -1,30 +1,34 @@
 object Form1: TForm1
+  Left = 610
+  Height = 300
+  Top = 247
+  Width = 400
  ActiveControl = Button1
  Caption = 'Form1'
  ClientHeight = 300
  ClientWidth = 400
  OnCreate = FormCreate
-  PixelsPerInch = 90
-  HorzScrollBar.Page = 399
-  VertScrollBar.Page = 299
-  Left = 610
-  Height = 300
-  Top = 247
-  Width = 400
+  OnDestroy = FormDestroy
+  LCLVersion = '0.9.27'
+  object Label1: TLabel
+    Left = 93
+    Height = 18
+    Top = 73
+    Width = 110
+    Caption = 'Response is here'
+    ParentColor = False
+  end
  object Button1: TButton
-    
-    Caption = 'Click to load a chm'
-    OnClick = Button1Click
-    TabOrder = 0
    Left = 36
    Height = 25
    Top = 20
    Width = 284
+    Caption = 'Click to load a chm'
+    OnClick = Button1Click
+    TabOrder = 0
  end
  object OpenDialog1: TOpenDialog
-    Title = 'Open existing file'
    FilterIndex = 0
-    Title = 'Open existing file'
    left = 28
    top = 127
  end
--- a/components/chmhelp/democontrol/unit1.lrs
+++ b/components/chmhelp/democontrol/unit1.lrs
@ -1,11 +1,13 @@
+{ This is an automatically generated lazarus resource file }
+
 LazarusResources.Add('TForm1','FORMDATA',[
-  'TPF0'#6'TForm1'#5'Form1'#13'ActiveControl'#7#7'Button1'#7'Caption'#6#5'Form1'
-  +#12'ClientHeight'#3','#1#11'ClientWidth'#3#144#1#8'OnCreate'#7#10'FormCreate'
-  +#13'PixelsPerInch'#2'Z'#18'HorzScrollBar.Page'#3#143#1#18'VertScrollBar.Page'
-  +#3'+'#1#4'Left'#3'b'#2#6'Height'#3','#1#3'Top'#3#247#0#5'Width'#3#144#1#0#7
-  +'TButton'#7'Button1'#7'Caption'#6#19'Click to load a chm'#7'OnClick'#7#12'Bu'
-  +'tton1Click'#8'TabOrder'#2#0#4'Left'#2'$'#6'Height'#2#25#3'Top'#2#20#5'Width'
-  +#3#28#1#0#0#11'TOpenDialog'#11'OpenDialog1'#5'Title'#6#18'Open existing file'
-  +#11'FilterIndex'#2#0#5'Title'#6#18'Open existing file'#4'left'#2#28#3'top'#2
-  +''#0#0#0
+  'TPF0'#6'TForm1'#5'Form1'#4'Left'#3'b'#2#6'Height'#3','#1#3'Top'#3#247#0#5'Wi'
+  +'dth'#3#144#1#13'ActiveControl'#7#7'Button1'#7'Caption'#6#5'Form1'#12'Client'
+  +'Height'#3','#1#11'ClientWidth'#3#144#1#8'OnCreate'#7#10'FormCreate'#9'OnDes'
+  +'troy'#7#11'FormDestroy'#10'LCLVersion'#6#6'0.9.27'#0#6'TLabel'#6'Label1'#4
+  +'Left'#2']'#6'Height'#2#18#3'Top'#2'I'#5'Width'#2'n'#7'Caption'#6#16'Respons'
+  +'e is here'#11'ParentColor'#8#0#0#7'TButton'#7'Button1'#4'Left'#2'$'#6'Heigh'
+  +'t'#2#25#3'Top'#2#20#5'Width'#3#28#1#7'Caption'#6#19'Click to load a chm'#7
+  +'OnClick'#7#12'Button1Click'#8'TabOrder'#2#0#0#0#11'TOpenDialog'#11'OpenDial'
+  +'og1'#11'FilterIndex'#2#0#4'left'#2#28#3'top'#2''#0#0#0
 ]);
--- a/components/chmhelp/democontrol/unit1.pas
+++ b/components/chmhelp/democontrol/unit1.pas
@ -6,7 +6,7 @@ interface

 uses
  Classes, SysUtils, LResources, Forms, Controls, Graphics, Dialogs, LHelpControl,
-  Buttons;
+  Buttons, StdCtrls;

 type

@ -14,9 +14,11 @@ type

  TForm1 = class(TForm)
    Button1: TButton;
+    Label1: TLabel;
    OpenDialog1: TOpenDialog;
    procedure Button1Click(Sender: TObject);
    procedure FormCreate(Sender: TObject);
+    procedure FormDestroy(Sender: TObject);
  private
    { private declarations }
  public
@ -31,16 +33,38 @@ implementation

 { TForm1 }

+function ResponseToString(Ares: TLHelpResponse): String;
+begin
+  case Ares of
+    srNoAnswer:  Result := 'NoAnswer';
+    srSuccess: Result := 'Success';
+    srInvalidFile:Result := 'InvalidFileName';
+    srInvalidURL:Result := 'InvalidURL';
+    srInvalidContext:Result := 'InvalidContext';
+
+  end;
+end;
+
 procedure TForm1.Button1Click(Sender: TObject);
+var
+  Res: TLHelpResponse;
 begin
  if not OpenDialog1.Execute then exit;
-  Help.StartHelpServer('letstestagain', '../lhelp/lhelp --display=192.168.0.250:0');
-  Help.OpenFile(OpenDialog1.FileName);
+  if Help.ServerRunning = false then
+    Help.StartHelpServer('letstestagain', '../lhelp/lhelp');
+  Res :=Help.OpenFile(OpenDialog1.FileName);
+  Label1.Caption := ResponseToString(Res);
 end;

 procedure TForm1.FormCreate(Sender: TObject);
 begin
  Help := TLHelpConnection.Create;
+  Help.ProcessWhileWaiting := @Application.ProcessMessages;
+end;
+
+procedure TForm1.FormDestroy(Sender: TObject);
+begin
+  Help.Free;
 end;

 initialization
--- a/components/chmhelp/lhelp/lhelp.lpi
+++ b/components/chmhelp/lhelp/lhelp.lpi
@ -55,15 +55,15 @@
      </Unit2>
      <Unit3>
        <Filename Value="chmpopup.pas"/>
-        <ComponentName Value="HelpPopupForm"/>
        <IsPartOfProject Value="True"/>
+        <ComponentName Value="HelpPopupForm"/>
        <UnitName Value="ChmPopup"/>
      </Unit3>
      <Unit4>
        <Filename Value="lhelpcore.pas"/>
+        <IsPartOfProject Value="True"/>
        <ComponentName Value="HelpForm"/>
        <HasResources Value="True"/>
-        <IsPartOfProject Value="True"/>
        <ResourceBaseClass Value="Form"/>
        <UnitName Value="lhelpcore"/>
      </Unit4>
--- a/components/chmhelp/lhelp/lhelp.manifest
+++ b/components/chmhelp/lhelp/lhelp.manifest
@ -1,17 +1,17 @@
-<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
- <assemblyIdentity version="1.0.0.0" processorArchitecture="*" name="CompanyName.ProductName.YourApp" type="win32"/>
- <description>Your application description here.</description>
- <dependency>
-  <dependentAssembly>
-   <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*"/>
-  </dependentAssembly>
- </dependency>
- <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
-  <security>
-   <requestedPrivileges>
-    <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
-   </requestedPrivileges>
-  </security>
- </trustInfo>
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+ <assemblyIdentity version="1.0.0.0" processorArchitecture="*" name="CompanyName.ProductName.YourApp" type="win32"/>
+ <description>Your application description here.</description>
+ <dependency>
+  <dependentAssembly>
+   <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*"/>
+  </dependentAssembly>
+ </dependency>
+ <trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
+  <security>
+   <requestedPrivileges>
+    <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
+   </requestedPrivileges>
+  </security>
+ </trustInfo>
 </assembly>
--- a/components/chmhelp/lhelp/lhelp.rc
+++ b/components/chmhelp/lhelp/lhelp.rc
@ -1,7 +1,7 @@
-#define RT_MANIFEST  24
-#define CREATEPROCESS_MANIFEST_RESOURCE_ID 1
-#define ISOLATIONAWARE_MANIFEST_RESOURCE_ID 2
-#define ISOLATIONAWARE_NOSTATICIMPORT_MANIFEST_RESOURCE_ID 3
-
+#define RT_MANIFEST  24
+#define CREATEPROCESS_MANIFEST_RESOURCE_ID 1
+#define ISOLATIONAWARE_MANIFEST_RESOURCE_ID 2
+#define ISOLATIONAWARE_NOSTATICIMPORT_MANIFEST_RESOURCE_ID 3
+
 CREATEPROCESS_MANIFEST_RESOURCE_ID RT_MANIFEST "lhelp.manifest"
 MAINICON ICON "lhelp.ico"
--- a/components/chmhelp/lhelp/lhelpcore.lfm
+++ b/components/chmhelp/lhelp/lhelpcore.lfm
@ -1,439 +1,439 @@
-object HelpForm: THelpForm
-  Left = 322
-  Height = 535
-  Top = 239
-  Width = 758
-  ActiveControl = Panel1
-  Caption = 'LHelp'
-  ClientHeight = 510
-  ClientWidth = 758
-  Icon.Data = {
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-    0000FFFFFF002775B87D4C81A7AE7498ADBD7699AEBD779AAFBD789BAFBD799C
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-    FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFBBCBCBFF5C8495EE1558
-    A30E2F74AF7C248BDBFFE3E9E9FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
-    FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFC5D3D3FF598397E1326A
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-    DAFF56CCD9FF58CADAFF5AC6DAFF5BBFDAFF5CB7DAFF5EAEDBFF66A9D9FF3169
-    9D5827639F39148CF1FF0796EEFF11BBFDFF12D3FEFF18EBFEFF1FF5FFFF1CD4
-    FFFF20E0FFFF23F7FFFF1EF5FFFF17E8FEFF11CFFEFF0BB6FDFF47ACECFC1558
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-    FFFF0471FFFF22DFFFFF22F7FFFF1BF5FFFF14DBFEFF0DBFFEFF56ACDEE7FFFF
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-    0000
-  }
-  Menu = MainMenu1
-  OnClose = FormClose
-  OnCreate = FormCreate
-  Position = poScreenCenter
-  ShowInTaskBar = stAlways
-  LCLVersion = '0.9.27'
-  object Panel1: TPanel
-    Left = 0
-    Height = 32
-    Top = 0
-    Width = 758
-    Align = alTop
-    ClientHeight = 32
-    ClientWidth = 758
-    TabOrder = 0
-    object ForwardBttn: TSpeedButton
-      Left = 65
-      Height = 30
-      Top = 1
-      Width = 32
-      Align = alLeft
-      Color = clBtnFace
-      Glyph.Data = {
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-      NumGlyphs = 0
-      OnClick = ForwardToolBtnClick
-    end
-    object BackBttn: TSpeedButton
-      Left = 33
-      Height = 30
-      Top = 1
-      Width = 32
-      Align = alLeft
-      Color = clBtnFace
-      Glyph.Data = {
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-      }
-      NumGlyphs = 0
-      OnClick = BackToolBtnClick
-    end
-    object HomeBttn: TSpeedButton
-      Left = 1
-      Height = 30
-      Top = 1
-      Width = 32
-      Align = alLeft
-      Color = clBtnFace
-      Glyph.Data = {
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-    Height = 478
-    Top = 32
-    Width = 758
-    Align = alClient
-    TabOrder = 1
-    TabPosition = tpBottom
-    OnChange = PageControlChange
-    OnEnter = PageControlEnter
-    OnPageChanged = PageControlChange
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-  object MainMenu1: TMainMenu
-    top = 124
-    object FileMenuItem: TMenuItem
-      Caption = '&File'
-      object FileMenuOpenItem: TMenuItem
-        Caption = '&Open...'
-        ShortCut = 16463
-        OnClick = FileMenuOpenItemClick
-      end
-      object FileMenuOpenURLItem: TMenuItem
-        Caption = 'Open &URL...'
-        OnClick = FileMenuOpenURLItemClick
-      end
-      object FileMenuCloseItem: TMenuItem
-        Caption = '&Close'
-        ShortCut = 16471
-        OnClick = FileMenuCloseItemClick
-      end
-      object FileSeperater: TMenuItem
-        Caption = '-'
-      end
-      object FileMenuExitItem: TMenuItem
-        Caption = 'E&xit'
-        OnClick = FileMenuExitItemClick
-      end
-    end
-    object ViewMenuItem: TMenuItem
-      Caption = '&View'
-      object ViewMenuContents: TMenuItem
-        Caption = 'Show contents'
-        Checked = True
-        ShortCut = 115
-        ShowAlwaysCheckable = True
-        OnClick = ViewMenuContentsClick
-      end
-    end
-    object HelpMenuItem: TMenuItem
-      Caption = '&Help'
-      object AboutItem: TMenuItem
-        Caption = '&About...'
-        OnClick = AboutItemClick
-      end
-    end
-  end
-  object OpenDialog1: TOpenDialog
-    Filter = 'HelpFiles(*.chm)|*.chm|All FIles(*.*)|*'
-    FilterIndex = 0
-    top = 156
-  end
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+object HelpForm: THelpForm
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+  Height = 535
+  Top = 239
+  Width = 758
+  ActiveControl = Panel1
+  Caption = 'LHelp'
+  ClientHeight = 510
+  ClientWidth = 758
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+  Menu = MainMenu1
+  OnClose = FormClose
+  OnCreate = FormCreate
+  Position = poScreenCenter
+  ShowInTaskBar = stAlways
+  LCLVersion = '0.9.27'
+  object Panel1: TPanel
+    Left = 0
+    Height = 32
+    Top = 0
+    Width = 758
+    Align = alTop
+    ClientHeight = 32
+    ClientWidth = 758
+    TabOrder = 0
+    object ForwardBttn: TSpeedButton
+      Left = 65
+      Height = 30
+      Top = 1
+      Width = 32
+      Align = alLeft
+      Color = clBtnFace
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+      NumGlyphs = 0
+      OnClick = ForwardToolBtnClick
+    end
+    object BackBttn: TSpeedButton
+      Left = 33
+      Height = 30
+      Top = 1
+      Width = 32
+      Align = alLeft
+      Color = clBtnFace
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+      NumGlyphs = 0
+      OnClick = BackToolBtnClick
+    end
+    object HomeBttn: TSpeedButton
+      Left = 1
+      Height = 30
+      Top = 1
+      Width = 32
+      Align = alLeft
+      Color = clBtnFace
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+      NumGlyphs = 0
+      OnClick = HomeToolBtnClick
+    end
+  end
+  object PageControl: TPageControl
+    Left = 0
+    Height = 478
+    Top = 32
+    Width = 758
+    Align = alClient
+    TabOrder = 1
+    TabPosition = tpBottom
+    OnChange = PageControlChange
+    OnEnter = PageControlEnter
+    OnPageChanged = PageControlChange
+  end
+  object MainMenu1: TMainMenu
+    top = 124
+    object FileMenuItem: TMenuItem
+      Caption = '&File'
+      object FileMenuOpenItem: TMenuItem
+        Caption = '&Open...'
+        ShortCut = 16463
+        OnClick = FileMenuOpenItemClick
+      end
+      object FileMenuOpenURLItem: TMenuItem
+        Caption = 'Open &URL...'
+        OnClick = FileMenuOpenURLItemClick
+      end
+      object FileMenuCloseItem: TMenuItem
+        Caption = '&Close'
+        ShortCut = 16471
+        OnClick = FileMenuCloseItemClick
+      end
+      object FileSeperater: TMenuItem
+        Caption = '-'
+      end
+      object FileMenuExitItem: TMenuItem
+        Caption = 'E&xit'
+        OnClick = FileMenuExitItemClick
+      end
+    end
+    object ViewMenuItem: TMenuItem
+      Caption = '&View'
+      object ViewMenuContents: TMenuItem
+        Caption = 'Show contents'
+        Checked = True
+        ShortCut = 115
+        ShowAlwaysCheckable = True
+        OnClick = ViewMenuContentsClick
+      end
+    end
+    object HelpMenuItem: TMenuItem
+      Caption = '&Help'
+      object AboutItem: TMenuItem
+        Caption = '&About...'
+        OnClick = AboutItemClick
+      end
+    end
+  end
+  object OpenDialog1: TOpenDialog
+    Filter = 'HelpFiles(*.chm)|*.chm|All FIles(*.*)|*'
+    FilterIndex = 0
+    top = 156
+  end
+  object ImageList1: TImageList
+    left = 8
+    top = 80
+    Bitmap = {
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+      FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFDFD
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+      FFFF0095F4FF30518C000000000000000000225DA900009BFEFFCDF1FFFFCDF1
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+      FFFF0098F8FF4E65940000000000000000002667B700009BFEFFCDF1FFFFCDF1
+      FFFFCDF1FFFFCDF1FFFFC9EFFFFF1BB7FFFF009EE8FF57CEFFFFCDF1FFFFCDF1
+      FFFF0095F4FF546C9C0000000000000000002871C5000098F8FFCDF1FFFFCDF1
+      FFFFCDF1FFFFCDF1FFFF21B8FFFF009EE8FF4BCAFFFFCDF1FFFFCDF1FFFFCDF1
+      FFFF0095F2FF5C75A70000000000000000002874C9000095F4FFCDF1FFFFCDF1
+      FFFFCDF1FFFFCDF1FFFF00A0EAFF009EE8FFC9EFFFFFCDF1FFFFCDF1FFFFCDF1
+      FFFF008DF0FF627DAD000000000002070C002877CE000095F2FFCDF1FFFFCDF1
+      FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1
+      FFFF0082E6FF6580AF0000000000091624002679D1000092EEFFCDF1FFFFCDF1
+      FFFFCDF1FFFFCDF1FFFF009EE8FF009EE8FFCDF1FFFFCDF1FFFFCDF1FFFFCDF1
+      FFFF0080E2FF6782B10001040800112A4200257BD6000083E8FFCDF1FFFFCDF1
+      FFFFCDF1FFFFCDF1FFFF009EE8FF009EE8FFCDF1FFFFCDF1FFFFCDF1FFFFCDF1
+      FFFF007CDCFF6B83AF0010263D0015395D001E79D7000080E2FFCDF1FFFFCDF1
+      FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1FFFFCDF1
+      FFFF027CDCFF5974A6000A151F00071321002458AB002F6EC4FF0761C8FF005D
+      C6FF005DC6FF005DC6FF005DC6FF005DC6FF005CC2FF005CC2FF005BC2FF075F
+      C4FF2560B6FF435F9B000105090000000000143D6B00385C9600627CAC00627C
+      AB00617BAC00607AAC005F79AA005F79AA005E79AB005C79AA005C78AA005C78
+      AA005A75AA003158930003080E00
+    }
+  end
+end
--- a/components/chmhelp/lhelp/lhelpcore.pas
+++ b/components/chmhelp/lhelp/lhelpcore.pas
@ -86,14 +86,16 @@ type
  private
    { private declarations }
    fServerName: String;
-    fServer: TSimpleIPCServer;
+    fInputIPC: TSimpleIPCServer;
+    fOutputIPC: TSimpleIPCClient;
    fServerTimer: TTimer;
    fContext: LongInt; // used once when we are started on the command line with --context
+    procedure SendResponse(Response: DWord);
    procedure ServerMessage(Sender: TObject);
    procedure ReadCommandLineOptions;
    procedure StartServer(ServerName: String);
    procedure StopServer;
-    procedure OpenURL(const AURL: String; AContext: THelpContext=-1);
+    function  OpenURL(const AURL: String; AContext: THelpContext=-1): DWord;
    procedure LateOpenURL(Url: PStringItem);
    function ActivePage: TContentTab;
    procedure RefreshState;
@ -231,6 +233,23 @@ begin
    end;
 end;

+procedure THelpForm.SendResponse(Response: DWord);
+var
+  Stream: TMemoryStream;
+begin
+  fOutputIPC := TSimpleIPCClient.Create(nil);
+  fOutputIPC.ServerID := fServerName+'client';
+  fOutputIPC.Active := True;
+
+  Stream := TMemoryStream.Create;
+  Stream.WriteDWord(Response);
+  fOutputIPC.SendMessage(mtUnknown, Stream);
+
+  if fOutputIPC.Active then
+    fOutputIPC.Active := False;
+  FreeAndNil(fOutputIPC);
+end;
+


 procedure THelpForm.ServerMessage(Sender: TObject);
@ -239,30 +258,32 @@ var
  FileReq:TFileRequest;
  ConReq: TContextRequest;
  Stream: TStream;
+  Res: LongWord;
 begin
-  if fServer.PeekMessage(5, True) then begin
-    Stream := fServer.MsgData;
+  if fInputIPC.PeekMessage(5, True) then begin
+    Stream := fInputIPC.MsgData;
    Stream.Position := 0;
    Stream.Read(FileReq, SizeOf(FileReq));
    case FileReq.RequestType of
      rtFile    : begin
-
-                    OpenURL('file://'+FileReq.FileName);
+                    Res := OpenURL('file://'+FileReq.FileName);
                  end;
      rtUrl     : begin
                    Stream.Position := 0;
                    Stream.Read(UrlReq, SizeOf(UrlReq));
                    if UrlReq.FileRequest.FileName <> '' then
-                      OpenUrl('file://'+UrlReq.FileRequest.FileName+'://'+UrlReq.Url)
+                      Res := OpenUrl('file://'+UrlReq.FileRequest.FileName+'://'+UrlReq.Url)
                    else
-                      OpenURL(UrlReq.Url);
+                      Res := OpenURL(UrlReq.Url);
                  end;
      rtContext : begin
                    Stream.Position := 0;
                    Stream.Read(ConReq, SizeOf(ConReq));
-                    OpenURL('file://'+FileReq.FileName, ConReq.HelpContext);
+                    Res := OpenURL('file://'+FileReq.FileName, ConReq.HelpContext);
                  end;
    end;
+    SendResponse(Res);
+    Self.SendToBack;
    Self.BringToFront;
  end;
 end;
@ -314,27 +335,32 @@ end;

 procedure THelpForm.StartServer(ServerName: String);
 begin
-  fServer := TSimpleIPCServer.Create(nil);
-  fServer.ServerID := ServerName;
-  fServer.Global := True;
-  fServer.Active := True;
+  fInputIPC := TSimpleIPCServer.Create(nil);
+  fInputIPC.ServerID := ServerName;
+  fInputIPC.Global := True;
+  fInputIPC.Active := True;
  fServerTimer := TTimer.Create(nil);
  fServerTimer.OnTimer := @ServerMessage;
  fServerTimer.Interval := 200;
  fServerTimer.Enabled := True;
  ServerMessage(nil);
+
+
 end;

 procedure THelpForm.StopServer;
 begin
-   if fServer = nil then exit;
+   if fInputIPC = nil then
+     exit;
+
+   if fInputIPC.Active then
+     fInputIPC.Active := False;
+
+   FreeAndNil(fInputIPC);
   FreeAndNil(fServerTimer);
-   if fServer.Active then fServer.Active := False;
-   FreeAndNil(fServer);
-   
 end;

-procedure THelpForm.OpenURL(const AURL: String; AContext: THelpContext);
+function THelpForm.OpenURL(const AURL: String; AContext: THelpContext): DWord;
  function GetURLPrefix: String;
  var
    fPos: Integer;
@ -349,18 +375,20 @@ var
 fNewPage: TContentTab;
 I: Integer;
 begin
-
+ Result := Ord(srUnknown);
 fURLPrefix := GetURLPrefix;
 fContentProvider := GetContentProvider(fURLPrefix);
 
 if fContentProvider = nil then begin
-   ShowError('Cannot handle this type of content. "' + fURLPrefix + '"');
+   ShowError('Cannot handle this type of content. "' + fURLPrefix + '" for url:'+LineEnding+AURL);
+   Result := Ord(srInvalidFile);
   Exit;
 end;
 fRealContentProvider := fContentProvider.GetProperContentProvider(AURL);
 
 if fRealContentProvider = nil then begin
-   ShowError('Cannot handle this type of subcontent. "' + fURLPrefix + '"');
+   ShowError('Cannot handle this type of subcontent. "' + fURLPrefix + '" for url:'+LineEnding+AURL);
+   Result := Ord(srInvalidFile);
   Exit;
 end;

@ -368,7 +396,12 @@ begin
 for I := 0 to PageControl.PageCount-1 do begin
   if fRealContentProvider.ClassName = TContentTab(PageControl.Pages[I]).ContentProvider.ClassName then begin
     if TContentTab(PageControl.Pages[I]).ContentProvider.LoadURL(AURL, AContext) then
+     begin
       PageControl.ActivePage := PageControl.Pages[I];
+       Result := Ord(srSuccess);
+     end
+     else
+       Result := Ord(srInvalidFile);
     Exit;
   end;
 end;
@ -381,7 +414,12 @@ begin
 ShowOnTop;
 
 if fNewPage.ContentProvider.LoadURL(AURL, AContext) then
+ begin
   PageControl.ActivePage := fNewPage;
+   Result := Ord(srSuccess);
+ end
+ else
+   Result := Ord(srInvalidFile);
 end;

 procedure THelpForm.LateOpenURL ( Url: PStringItem ) ;
--- a/components/chmhelp/packages/help/lhelpcontrol.pas
+++ b/components/chmhelp/packages/help/lhelpcontrol.pas
@ -9,7 +9,9 @@ uses

 type
  TRequestType = (rtFile, rtUrl, rtContext);
-  
+
+  TLHelpResponse = (srNoAnswer, srUnknown, srSuccess, srInvalidFile, srInvalidURL, srInvalidContext);
+
  TFileRequest = record
    RequestType: TRequestType;
    FileName: array[0..512] of char;
@ -22,19 +24,29 @@ type
    FileRequest: TFileRequest;
    HelpContext: THelpContext;
  end;
+
+  TProcedureOfObject = procedure of object;
  
  { TLHelpConnection }

  TLHelpConnection = class(TObject)
  private
-    fClient: TSimpleIPCClient;
+    FProcessWhileWaiting: TProcedureOfObject;
+    fServerOut: TSimpleIPCClient; // sends messages to lhelp
+    fServerIn:  TSimpleIPCServer; // recieves messages from lhelp
+    function  WaitForMsgResponse: TLHelpResponse;
+    function  SendMessage(Stream: TStream): TLHelpResponse;
  public
    constructor Create;
    destructor Destroy; override;
+    function ServerRunning: Boolean;
    function StartHelpServer(NameForServer: String; ServerEXE: String = ''): Boolean;
-    procedure OpenURL(HelpFileName: String; Url: String);
-    procedure OpenContext(HelpFileName: String; Context: THelpContext);
-    procedure OpenFile(HelpFileName: String);
+
+    function OpenURL(HelpFileName: String; Url: String): TLHelpResponse;
+    function OpenContext(HelpFileName: String; Context: THelpContext): TLHelpResponse;
+    function OpenFile(HelpFileName: String): TLHelpResponse;
+
+    property ProcessWhileWaiting: TProcedureOfObject read FProcessWhileWaiting write FProcessWhileWaiting;
  end;
  

@ -42,45 +54,87 @@ implementation

 { TLHelpConnection }

+function TLHelpConnection.WaitForMsgResponse: TLHelpResponse;
+var
+  I: Integer;
+  Stream: TStream;
+  WaitTime: Integer = 5000;
+begin
+  Result := srNoAnswer;
+  while WaitTime >= 0 do
+  begin
+    Dec(WaitTime, 50);
+    if fServerIn.PeekMessage(50, True) then
+    begin
+      Stream := fServerIn.MsgData;
+      Stream.Position:=0;
+      Result := TLHelpResponse(Stream.ReadDWord);
+      Exit;
+    end;
+    if Assigned(FProcessWhileWaiting) then FProcessWhileWaiting();
+  end;
+end;
+
+function TLHelpConnection.SendMessage(Stream: TStream): TLHelpResponse;
+begin
+  fServerOut.SendMessage(mtUnknown, Stream);
+  Result := WaitForMsgResponse;
+end;

 constructor TLHelpConnection.Create;
 begin
-  fClient := TSimpleIPCClient.Create(nil);
+  fServerOut := TSimpleIPCClient.Create(nil);
+  fServerIn  := TSimpleIPCServer.Create(nil);
 end;

 destructor TLHelpConnection.Destroy;
 begin
-  if fCLient.Active then fClient.Active:=False;
-  fClient.Free;
+  if fServerOut.Active then
+    fServerOut.Active:=False;
+  if fServerIn.Active then
+    fServerIn.Active:=False;
+  fServerOut.Free;
+  fServerIn.Free;
  inherited Destroy;

 end;

+function TLHelpConnection.ServerRunning: Boolean;
+begin
+  Result := (fServerOut<>nil) and (fServerOut.Active);
+end;
+
 function TLHelpConnection.StartHelpServer(NameForServer: String;
  ServerEXE: String): Boolean;
 var
  X: Integer;
 begin
  Result := False;
-  fClient.Active := False;
-  fClient.ServerID := NameForServer;
-  if not fClient.ServerRunning then begin
+
+  fServerIn.Active := False;
+  fServerIn.ServerID := NameForServer+'client';
+  fServerIn.Global := True;
+  fServerIn.Active := True;
+
+  fServerOut.Active := False;
+  fServerOut.ServerID := NameForServer;
+  if not fServerOut.ServerRunning then begin
    with TProcessUTF8.Create(nil) do begin
      CommandLine := ServerExe + ' --ipcname ' + NameForServer;
      Execute;
    end;
    // give the server some time to get started
    for X := 0 to 40 do begin
-      if not fClient.ServerRunning then Sleep(200);
+      if not fServerOut.ServerRunning then Sleep(200);
    end;
  end;
-  if fClient.ServerRunning then begin
-    fClient.Active := True;
+  if fServerOut.ServerRunning then begin
+    fServerOut.Active := True;
    Result := True;
  end;
 end;

-procedure TLHelpConnection.OpenURL(HelpFileName: String; Url: String);
+function TLHelpConnection.OpenURL(HelpFileName: String; Url: String): TLHelpResponse;
 var
 UrlRequest: TUrlRequest;
 Stream: TMemoryStream;
@ -90,12 +144,15 @@ begin
  UrlRequest.FileRequest.RequestType := rtURL;
  UrlRequest.Url := Url+#0;
  Stream.Write(UrlRequest,SizeOf(UrlRequest));
-  fClient.SendMessage(mtUnknown, Stream);
+  Result := SendMessage(Stream);
+
  // Do I need to free the stream?? the example doesn't
+
+
 end;

-procedure TLHelpConnection.OpenContext(HelpFileName: String;
-  Context: THelpContext);
+function TLHelpConnection.OpenContext(HelpFileName: String;
+  Context: THelpContext) : TLHelpResponse;
 var
 ContextRequest: TContextRequest;
 Stream: TMemoryStream;
@ -105,11 +162,11 @@ begin
  ContextRequest.FileRequest.RequestType := rtContext;
  ContextRequest.HelpContext := Context;
  Stream.Write(ContextRequest, SizeOf(ContextRequest));
-  fClient.SendMessage(mtUnknown, Stream);
+  Result := SendMessage(Stream);
  // Do I need to free the stream?? the example doesn't
 end;

-procedure TLHelpConnection.OpenFile(HelpFileName: String);
+function TLHelpConnection.OpenFile(HelpFileName: String): TLHelpResponse;
 var
 FileRequest : TFileRequest;
 Stream: TMemoryStream;
@ -118,7 +175,7 @@ begin
  FileRequest.RequestType := rtFile;
  FileRequest.FileName := HelpFileName+#0;
  Stream.Write(FileRequest, SizeOf(FileRequest));
-  fClient.SendMessage(mtUnknown, Stream);
+  Result := SendMessage(Stream);
  // Do I need to free the stream?? the example doesn't
 end;

--- a/components/chmhelp/packages/idehelp/chmhelppkg.lpk
+++ b/components/chmhelp/packages/idehelp/chmhelppkg.lpk
@ -1,15 +1,12 @@
 <?xml version="1.0"?>
 <CONFIG>
-  <Package Version="2">
+  <Package Version="3">
    <Name Value="ChmHelpPkg"/>
    <CompilerOptions>
-      <Version Value="5"/>
+      <Version Value="8"/>
      <SearchPaths>
        <UnitOutputDirectory Value="lib/$(TargetCPU)-$(TargetOS)"/>
      </SearchPaths>
-      <CodeGeneration>
-        <Generate Value="Faster"/>
-      </CodeGeneration>
      <Other>
        <CompilerPath Value="$(CompPath)"/>
      </Other>
@ -23,20 +20,23 @@
      </Item1>
    </Files>
    <Type Value="DesignTime"/>
-    <RequiredPkgs Count="4">
+    <RequiredPkgs Count="5">
      <Item1>
-        <PackageName Value="CodeTools"/>
+        <PackageName Value="LCL"/>
      </Item1>
      <Item2>
-        <PackageName Value="lhelpcontrolpkg"/>
+        <PackageName Value="CodeTools"/>
      </Item2>
      <Item3>
-        <PackageName Value="IDEIntf"/>
+        <PackageName Value="lhelpcontrolpkg"/>
      </Item3>
      <Item4>
+        <PackageName Value="IDEIntf"/>
+      </Item4>
+      <Item5>
        <PackageName Value="FCL"/>
        <MinVersion Major="1" Valid="True"/>
-      </Item4>
+      </Item5>
    </RequiredPkgs>
    <UsageOptions>
      <UnitPath Value="$(PkgOutDir)/"/>
--- a/components/chmhelp/packages/idehelp/lazchmhelp.pas
+++ b/components/chmhelp/packages/idehelp/lazchmhelp.pas
@ -24,7 +24,7 @@ interface

 uses
  Classes, SysUtils, FileUtil, LazHelpIntf, HelpIntfs, LazConfigStorage,
-  PropEdits, LHelpControl;
+  PropEdits, LHelpControl, Controls;
  
 type
  
@ -36,10 +36,13 @@ type
    fHelpLabel: String;
    fHelpConnection: TLHelpConnection;
    fChmsFilePath: String;
+    function GetHelpEXE: String;
  protected
    function GetFileNameAndURL(RawUrl: String; out FileName: String; out URL: String): Boolean;
    procedure SetHelpEXE(AValue: String);
    procedure SetHelpLabel(AValue: String);
+    function CheckBuildLHelp: Integer; // modal result
+    function GetLazBuildEXE(out ALazBuild: String): Boolean;
  public
    constructor Create(TheOwner: TComponent); override;
    destructor Destroy; override;
@ -53,7 +56,7 @@ type
    procedure Save(Storage: TConfigStorage); override;
    function GetLocalizedName: string; override;
  published
-    property HelpEXE: String read fHelpEXE write SetHelpEXE;
+    property HelpEXE: String read GetHelpEXE write SetHelpEXE;
    property HelpLabel: String read fHelpLabel write SetHelpLabel;
    property HelpFilesPath: String read fChmsFilePath write fChmsFilePath;

@ -62,9 +65,18 @@ type
  procedure Register;

 implementation
+uses Process, MacroIntf, InterfaceBase, Forms, Dialogs, HelpFPDoc;

 { TChmHelpViewer }

+function TChmHelpViewer.GetHelpEXE: String;
+begin
+  if fHelpExe <> '' then
+    Exit(fHelpExe);
+  Result := '$(LazarusDir)/components/chmhelp/lhelp/lhelp$(ExeExt)';
+  if not IDEMacros.SubstituteMacros(Result) then
+    Exit('');
+end;

 function TChmHelpViewer.GetFileNameAndURL(RawUrl:String; out FileName: String; out URL: String
  ): Boolean;
@ -90,11 +102,82 @@ begin
 fHelpLabel := AValue;
 end;

+function TChmHelpViewer.CheckBuildLHelp: Integer;
+var
+  Proc: TProcess;
+  Lazbuild: String;
+  LHelpProject: String;
+  WS: String;
+begin
+  Result := mrCancel;
+
+  if FileExistsUTF8(HelpExe) = True then
+    Exit(mrOK);
+
+  if not GetLazBuildEXE(Lazbuild) then
+    Exit;
+
+  LHelpProject := '$(LazarusDir)/components/chmhelp/lhelp/lhelp.lpi';
+
+  if not (IDEMacros.SubstituteMacros(LHelpProject)
+          and FileExistsUTF8(LHelpProject))
+  then
+    Exit;
+
+  WS := ' --ws='+LCLPlatformDirNames[WidgetSet.LCLPlatform]+' ';
+
+  Result := MessageDlg('The help viewer is not compiled yet. Try to compile it now?', mtConfirmation, mbYesNo ,0);
+  if Result <> mrYes then
+    Exit;
+
+  Proc := TProcess.Create(nil);
+  Proc.CommandLine := Lazbuild + WS + LHelpProject;
+  Proc.Options := [];
+  Proc.Execute;
+
+  while Proc.Running do begin
+    Application.HandleMessage;
+  end;
+
+  if Proc.ExitStatus = 0 then
+    Result := mrOK;
+  Proc.Free;
+
+  if Result = mrOK then
+end;
+
+function TChmHelpViewer.GetLazBuildEXE(out ALazBuild: String): Boolean;
+var
+  LazBuildMacro: String;
+begin
+   Result := False;
+   LazBuildMacro:= '$(LazarusDir)/$MakeExe(lazbuild)';
+   Result := IDEMacros.SubstituteMacros(LazBuildMacro)
+             and FileExistsUTF8(LazBuildMacro);
+   if Result then
+     ALazBuild := LazBuildMacro;
+end;
+
 constructor TChmHelpViewer.Create(TheOwner: TComponent);
+var
+  i: Integer;
+  DB: TFPDocHTMLHelpDatabase;
+  BaseURL: THelpBaseURLObject;
 begin
  inherited Create(TheOwner);
  fHelpConnection := TLHelpConnection.Create;
+  fHelpConnection.ProcessWhileWaiting:=@Application.ProcessMessages;
  AddSupportedMimeType('text/html');
+  for i := 0 to HelpDatabases.Count-1 do begin
+    DB := TFPDocHTMLHelpDatabase(HelpDatabases.Items[i]);
+    BaseURL := THelpBaseURLObject(DB.BasePathObject);
+    if (DB.ID = 'RTLUnits') and (BaseURL.BaseURL = '') then
+      BaseURL.BaseURL := 'rtl.chm://'
+    else if (DB.ID = 'FCLUnits') and (BaseURL.BaseURL = '') then
+      BaseURL.BaseURL := 'fcl.chm://'
+    else if (DB.ID = 'LCLUnits') and (BaseURL.BaseURL = '') then
+      BaseURL.BaseURL := 'lcl.chm://';
+  end;
 end;

 destructor TChmHelpViewer.Destroy;
@ -118,20 +201,52 @@ function TChmHelpViewer.ShowNode(Node: THelpNode; var ErrMsg: string
 var
 FileName: String;
 Url: String;
+Res: TLHelpResponse;
+DocsDir: String;
 begin
  Result:=shrNone;
-  if not FileExistsUTF8(fHelpEXE) then begin
-    ErrMsg := 'The program "' + fHelpEXE + '" doesn''t seem to exist!';
+  if CheckBuildLHelp <> mrOK then begin
+    ErrMsg := 'The program "' + HelpEXE + '" doesn''t seem to exist'+LineEnding+
+              'or could not be built!';
    Exit(shrViewerNotFound);
  end;
  if not GetFileNameAndURL(Node.Url, FileName, Url) then begin
    ErrMsg := 'Couldn''t read the file/URL correctly';
    Exit(shrDatabaseNotFound);
  end;
-  FileName := fChmsFilePath+FileName;
-  fHelpConnection.StartHelpServer(fHelpLabel, fHelpExe);
-  fHelpConnection.OpenURL(FileName, Url);
-  Result := shrSuccess;
+
+  if HelpFilesPath = '' then
+  begin
+    DocsDir := '$(LazarusDir)/docs/html/';
+    IDEMacros.SubstituteMacros(DocsDir);
+    if not FileExistsUTF8(DocsDir+FileName) then
+    begin
+      Result := shrDatabaseNotFound;
+      ErrMsg := FileName +' not found. Please put the chm help files in '+ LineEnding
+                         +DocsDir+  LineEnding
+                         +' or set the path to lcl.chm rtl.chm fcl.chm with "HelpFilesPath" in '
+                         +' Environment Options -> Help -> Help Options ->'+LineEnding
+                         +' under HelpViewers - CHMHelpViewer';
+      Exit;
+    end;
+
+  end
+  else
+    DocsDir := fChmsFilePath;
+
+  FileName := DocsDir+FileName;
+
+  fHelpConnection.StartHelpServer(fHelpLabel, HelpExe);
+  Res := fHelpConnection.OpenURL(FileName, Url);
+
+  case Res of
+    srSuccess: Result := shrSuccess;
+    srNoAnswer: Result := shrSuccess;
+  else
+    Result := shrNone;
+    ErrMsg := 'Unknown error showing '+URL;
+  end;
+
  //WriteLn('LOADING URL = ', Node.URL);
 end;