Delphi中在窗体标题栏画自定义文字

type

TCustomCaptionForm = class(TForm)

private

procedure WMNCPaint(var Msg: TWMNCPaint) ; message WM_NCPAINT;

procedure WMNCACTIVATE(var Msg: TWMNCActivate) ; message WM_NCACTIVATE;

procedure DrawCaptionText() ;

end;

...

implementation

procedure TCustomCaptionForm .DrawCaptionText;

const

captionText = \'delphi.about.com\';

var

canvas: TCanvas;

begin

canvas := TCanvas.Create;

try

canvas.Handle := GetWindowDC(Self.Handle) ;

with canvas do

begin

Brush.Style := bsClear;

Font.Color := clMaroon;

TextOut(Self.Width - 110, 6, captionText) ;

end;

finally

ReleaseDC(Self.Handle, canvas.Handle) ;

canvas.Free;

end;

end;

procedure TCustomCaptionForm.WMNCACTIVATE(var Msg: TWMNCActivate) ;

begin

inherited;

DrawCaptionText;

end;

procedure TCustomCaptionForm.WMNCPaint(var Msg: TWMNCPaint) ;

begin

inherited;

DrawCaptionText;

end;