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gtk: dont erase background of TCustomForm descendants

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git-svn-id: trunk@13851 -
This commit is contained in:
paul 2008-01-24 02:59:06 +00:00
parent 3755b7e54a
commit fff0200dff
1 changed files with 11 additions and 1 deletions
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12
lcl/interfaces/gtk/gtkcallback.inc
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@ -29,7 +29,17 @@
function DoDeliverPaintMessage(const Target: TObject; var PaintMsg: TLMPaint): PtrInt;
begin
if (TObject(Target) is TCustomControl) and not (csOpaque in TWinControl(Target).ControlStyle) then
{
erase backgound of not csOpaque custom controls
Attention - TCustomForm is also TCustomControl descendant - if we erase its
backgound then Form.Color will work, but under gtk1 form background will erase
subcontrols. For example checkboxes become unvisible. If this will be solved then
remove line "not (TObject(Target) is TCustomForm) and" from condition.
}
if (TObject(Target) is TCustomControl) and
not (TObject(Target) is TCustomForm) and
not (csOpaque in TWinControl(Target).ControlStyle) then
begin
Include(TWinControlAccess(Target).FWinControlFlags, wcfEraseBackground);
TWinControl(Target).Perform(LM_ERASEBKGND, PaintMsg.DC, 0);