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Qt: fixed bug when QMdiArea loose it's focusWidget during activation of mdichild (it's qt bug, so this is workaround for it).

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git-svn-id: trunk@33393 -
This commit is contained in:
zeljko 2011-11-07 10:12:20 +00:00
parent 79ecb7463b
commit 2e88b329aa
1 changed files with 34 additions and 15 deletions
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49
lcl/interfaces/qt/qtwidgets.pas
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@ -5036,16 +5036,13 @@ end;
procedure TQtMDIArea.SubWindowActivated(AWindow: QMDISubWindowH); cdecl;
var
i: Integer;
Arr: TPtrIntArray;
ActiveChild: TQtMainWindow;
InActiveChild: TQtMainWindow;
H: HWND;
W: QWidgetH;
WW: TQtWidget;
begin
// when AWindow = nil then there's no mdichildren at all
// so only valid state is AWindow <> nil
{DO NOT USE THIS FOR NOW, MAYBE WILL BE REMOVED, MAKES PROBLEMS WITH FOCUS
QMdiArea_subWindowList(QMdiAreaH(Widget), @Arr);
{we must fix qt bugs here. QWidget_focusWidget() is lost when
activating mdichild via BringToFront (eg from menu)}
if AWindow <> nil then
begin
H := HwndFromWidgetH(AWindow);
@ -5053,20 +5050,42 @@ begin
ActiveChild := TQtMainWindow(H)
else
ActiveChild := nil;
for i := 0 to High(Arr) do
if ActiveChild = nil then
exit;
W := QWidget_focusWidget(AWindow);
if W <> nil then
begin
H := HwndFromWidgetH(AWindow);
H := HwndFromWidgetH(W);
if H <> 0 then
begin
InActiveChild := TQtMainWindow(H);
if (InactiveChild <> ActiveChild) and TCustomForm(InActiveChild.LCLObject).Active then
InActiveChild.SlotActivateWindow(False);
WW := TQtWidget(H);
{$IF DEFINED(VerboseFocus) OR DEFINED(DebugQtFocus)}
writeln('TQtMDIArea.SubWindowActivated: *=* Current focus widget ',dbgsName(WW.LCLObject));
{$ENDIF}
{trigger QMDIArea to update it's focusWidget (it could be nil) }
QWidget_setFocus(WW.Widget, QtActiveWindowFocusReason);
end;
end else
begin
// fallback when qt completely looses it's mind about focusWidget() inside
// mdi form.
{$IF DEFINED(VerboseFocus) OR DEFINED(DebugQtFocus)}
writeln('TQtMDIArea.SubWindowActivated: fallback - ask TCustomForm.ActiveControl ',
dbgsName(TCustomForm(ActiveChild.LCLObject).ActiveControl));
{$ENDIF}
if Assigned(TCustomForm(ActiveChild.LCLObject).ActiveControl) and
TCustomForm(ActiveChild.LCLObject).ActiveControl.HandleAllocated then
begin
WW := TQtWidget(TCustomForm(ActiveChild.LCLObject).ActiveControl.Handle);
{$IF DEFINED(VerboseFocus) OR DEFINED(DebugQtFocus)}
writeln('**** SUCCESFULLY ACTIVATED FOCUS PATCH ****');
{$ENDIF}
QWidget_setFocus(WW.Widget, QtActiveWindowFocusReason);
end;
end;
if ActiveChild <> nil then
ActiveChild.SlotActivateWindow(True);
end;
}
end;
constructor TQtMDIArea.Create(const AParent: QWidgetH);