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LCL: Win32: Fixed FormStyle fsNormal is ignored after switching back from fsStayOnTop, only working for AnchorDocking with recreating of HWND. Issue

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git-svn-id: trunk@65053 -
This commit is contained in:
michl 2021-04-22 21:30:27 +00:00
parent 737f3518f6
commit 038cc46fc5
1 changed files with 3 additions and 22 deletions

25
lcl/interfaces/win32/win32wsforms.pp
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@ -587,9 +587,6 @@ class procedure TWin32WSCustomForm.SetFormStyle(const AForm: TCustomform;
const AFormStyle, AOldFormStyle: TFormStyle);
const
WindowPosFlags = SWP_NOMOVE or SWP_NOSIZE or SWP_NOACTIVATE or SWP_NOOWNERZORDER;
var
toplist: TList;
i: Integer;
begin
// Some changes don't require RecreateWnd
@ -608,7 +605,7 @@ begin
begin
// NOTE:
// see bug report #16573
// see bug report #16573 and #38790
// if a window changes from HWND_TOPMOST to HWND_NOTOPMOST
// other TOP most windows also change their state to Non-topmost!
@ -616,26 +613,10 @@ begin
// "When a topmost window is made non-topmost, its owners and its owned windows are also made non-topmost windows"
// Is it possible, that Application window, makes all other forms, non-top most?
// It's also possible to make a list of "topmost forms" and re-enable their state
// after changing the style of the window (so recreation can be avoided)
// Possible solution, using window re-creation
//if not (csDesigning in AForm.ComponentState) then
// RecreateWnd(AForm);
// after changing the style of the window (so recreation can be avoided).
if not (csDesigning in AForm.ComponentState) then
begin
toplist := TList.Create;
try
EnumStayOnTop(AForm.Handle, toplist);
SetWindowPos(AForm.Handle, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE or SWP_NOSIZE or SWP_NOOWNERZORDER);
for i := 0 to toplist.Count - 1 do
if HWND(toplist[i]) <> AForm.Handle then
SetWindowPos(HWND(toplist[i]), HWND_TOPMOST, 0, 0, 0, 0, WindowPosFlags);
finally
toplist.Free;
end;
end;
RecreateWnd(AForm);
end
else
RecreateWnd(AForm);