graystringunit.pas

DelphiWin32核心API参考光盘内容.是学习书籍中的源码,便于学习.

unit GrayStringUnit;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls;

type
  TForm1 = class(TForm)
    procedure FormPaint(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.FormPaint(Sender: TObject);
var
  Str: PChar;       // points to the string to be drawn
begin
  {initialize the string pointer}
  Str := 'Delphi Rocks!';

  {initialize the brush used to draw the string}
  Canvas.Brush.Color := clRed;

  {draw the string}
  GrayString(Canvas.Handle, Canvas.Brush.Handle, NIL, LPARAM(Str), Length(Str),
             10, 10, 0, 0);
end;

end.