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win32: always call default window proc for WM_PAINT progressbar handler if it has marquee style (fixes bug #0015064)

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git-svn-id: trunk@22692 -
This commit is contained in:
paul 2009-11-20 10:35:09 +00:00
parent 77f497ae43
commit 40861cdaf8
1 changed files with 12 additions and 0 deletions
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12
lcl/interfaces/win32/win32wscomctrls.pp
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@ -540,6 +540,17 @@ begin
AStatusBar.Invalidate;
end;
function ProgressBarWndProc(Window: HWnd; Msg: UInt; WParam: Windows.WParam;
LParam: Windows.LParam): LResult; stdcall;
begin
// Marquee progress bar on vista/w7 required to call default window proc to
// setup the timer
if (Msg = WM_PAINT) and ThemeServices.ThemesEnabled and
(GetWindowLong(Window, GWL_STYLE) and PBS_MARQUEE = PBS_MARQUEE) then
CallDefaultWindowProc(Window, Msg, WParam, LParam);
Result := WindowProc(Window, Msg, WParam, LParam);
end;
{ TWin32WSProgressBar }
class function TWin32WSProgressBar.CreateHandle(const AWinControl: TWinControl;
@ -562,6 +573,7 @@ begin
Flags := Flags or PBS_MARQUEE;
end;
pClassName := PROGRESS_CLASS;
SubClassWndProc := @ProgressBarWndProc;
end;
// create window
FinishCreateWindow(AWinControl, Params, False);