cretepatternbrushunit.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 CretePatternBrushUnit;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}
{$R BrushPatterns.Res}

procedure TForm1.Button1Click(Sender: TObject);
var
  NewBrush: HBrush;       // brush handle
  BitmapHandle: THandle;  // handle to a bitmap
begin
  {get a bitmap that is stored in the exe}
  BitmapHandle := LoadBitmap(Hinstance, 'BrushPattern');

  {Create the pattern brush with the bitmap as the pattern}
  NewBrush := CreatePatternBrush(BitmapHandle);

  {fill the region with the pattern using the brush}
  FillRect(Canvas.Handle, ClientRect, NewBrush);

  {clean up the memory}
  DeleteObject(NewBrush);
  DeleteObject(BitmapHandle);
end;

end.