Как получить эффект тени для hint?
Как получить эффект тени для hint?
type
TXPHintWindow = class(THintWindow)
protected
procedure CreateParams(var Params: TCreateParams); override;
procedure WMNCPaint(var msg: TMessage); message WM_NCPAINT;
end;
function IsWinXP: Boolean;
begin
Result := (Win32Platform = VER_PLATFORM_WIN32_NT) and
(Win32MajorVersion >= 5) and (Win32MinorVersion >= 1);
end;
procedure TXPHintWindow.CreateParams(var Params: TCreateParams);
const
CS_DROPSHADOW = $00020000;
begin
inherited;
if IsWinXP then
Params.WindowClass.Style := Params.WindowClass.Style or CS_DROPSHADOW;
end;
procedure TXPHintWindow.WMNCPaint(var msg: TMessage);
var
R: TRect;
DC: HDC;
begin
DC := GetWindowDC(Handle);
try
R := Rect(0, 0, Width, Height);
DrawEdge(DC, R, EDGE_ETCHED, BF_RECT or BF_MONO);
finally
ReleaseDC(Handle, DC);
end;
end;
initialization
HintWindowClass := TXPHintWindow;
Application.ShowHint := False;
Application.ShowHint := True;
end.
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