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MG: fixed uncapturing of mouse

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git-svn-id: trunk@1160 -
This commit is contained in:
lazarus 2002-02-09 01:48:00 +00:00
parent 9fe5a56c15
commit 1fbe65619e
1 changed files with 13 additions and 68 deletions
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81
lcl/interfaces/gtk/gtkproc.inc
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@ -981,23 +981,6 @@ begin
end;
end;
{------------------------------------------------------------------------------
procedure Uncapturehandle;
Frees the CaptureHandle
------------------------------------------------------------------------------}
procedure UncaptureHandle;
begin
if MCaptureHandle <> 0 then begin
{$IfDef VerboseMouseCapture}
writeln('UncaptureHandle ',HexStr(Cardinal(MCaptureHandle),8));
{$ENDIF}
//gdk_pointer_ungrab(0);
gtk_grab_remove(pgtkwidget(MCaptureHandle));
MCaptureHandle:=0;
end;
end;
{------------------------------------------------------------------------------
Procedure: StoreCommonDialogSetup
Params: ADialog: TCommonDialog
@ -1494,59 +1477,18 @@ end;
------------------------------------------------------------------------------}
procedure UpdateMouseCaptureControl;
var
OldMouseCaptureHandle,
CurMouseCaptureHandle: PGtkWidget;
procedure NotifyCurCaptureControl;
var
CurControl: TObject;
CaptureChangedMsg: TLMessage;
begin
if CurMouseCaptureHandle=nil then exit;
CurControl:=GetLCLObject(CurMouseCaptureHandle);
if CurControl=nil then begin
MCaptureHandle:=0;
exit;
end;
with CaptureChangedMsg do begin
Msg := Msg;
WParam := LM_CAPTURECHANGED;
LParam := 0;
Result := longint(OldMouseCaptureHandle); // ToDo: 64bit faulty
end;
{$IFDEF VerboseMouseCapture}
writeln('UpdateMouseCaptureControl NotifyCurCaptureControl',
' Old=',HexStr(Cardinal(OldMouseCaptureHandle),8),
' New=',HexStr(Cardinal(MCaptureHandle),8)
);
{$ENDIF}
DeliverMessage(CurControl,CaptureChangedMsg);
end;
OldMouseCaptureWidget,
CurMouseCaptureWidget: PGtkWidget;
begin
OldMouseCaptureHandle:=PGtkWidget(MCaptureHandle);
CurMouseCaptureHandle:=gtk_grab_get_current;
if OldMouseCaptureHandle<>CurMouseCaptureHandle then begin
// mouse capture widget has changed
UncaptureHandle;
MCaptureHandle:=integer(CurMouseCaptureHandle); // ToDo: 64bit faulty
NotifyCurCaptureControl;
end;
end;
OldMouseCaptureWidget:=MouseCaptureWidget;
CurMouseCaptureWidget:=gtk_grab_get_current;
{-------------------------------------------------------------------------------
procedure CheckMouseCaptureHandle(CurrentInputWidget: PGtkWidget);
Compares CurrentInputWidget with cached capture widget
and updates if necessary.
-------------------------------------------------------------------------------}
procedure CheckMouseCaptureHandle(CurrentInputWidget: PGtkWidget);
begin
if (MCaptureHandle <> 0)
and (Pointer(MCaptureHandle) <> CurrentInputWidget) then begin
// capture differs. => gtk forgot to tell, that the capturing has changed
// -> update
UpdateMouseCaptureControl;
if OldMouseCaptureWidget<>CurMouseCaptureWidget then begin
// notify the new capture control
MouseCaptureWidget:=CurMouseCaptureWidget;
if MouseCaptureWidget<>nil then
SendMessage(HWnd(MouseCaptureWidget), LM_CAPTURECHANGED, 0,
HWnd(OldMouseCaptureWidget));
end;
end;
@ -3560,6 +3502,9 @@ end;
{ =============================================================================
$Log$
Revision 1.129 2002/10/17 21:00:18 lazarus
MG: fixed uncapturing of mouse
Revision 1.128 2002/10/17 15:09:33 lazarus
MG: made mouse capturing more strict