再学GDI+[40]: 文本输出 - 选择画刷

再学GDI+[40]: 文本输出 - 选择画刷2012-05-07 cnblogs 万一本例效果图:

代码文件:

unit Unit1;
interface
uses
 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
 Dialogs, StdCtrls, ExtCtrls, CheckLst;
type
 TForm1 = class（TForm）
  RadioGroup1: TRadioGroup;
  procedure FormCreate（Sender: TObject）;
  procedure FormPaint（Sender: TObject）;
  procedure RadioGroup1Click（Sender: TObject）;
 end;
var
 Form1: TForm1;
implementation
{$R *.dfm}
uses GDIPOBJ,GDIPAPI;
procedure TForm1.FormCreate（Sender: TObject）;
begin
 RadioGroup1.Caption := "选择画刷";
 RadioGroup1.Items.CommaText := "实心画刷,阴影画刷,纹理画刷,渐变画刷";
 RadioGroup1.ItemIndex := 0;
end;
procedure TForm1.FormPaint（Sender: TObject）;
var
 g: TGPGraphics;
 font: TGPFont;
 img: TGPImage;
 b: TGPBrush;
begin
 g := TGPGraphics.Create（Canvas.Handle）;
 img := TGPImage.Create（"c:	empsmall.jpg"）; {文件要存在}
 case RadioGroup1.ItemIndex of
  0: b := TGPSolidBrush.Create（aclRed）;
  1: b := TGPHatchBrush.Create（HatchStyleCross, aclSilver, aclRed）;
  2: b := TGPTextureBrush.Create（img）;
  3: b := TGPLinearGradientBrush.Create（
     MakePoint（0,0）,
     MakePoint（ClientWidth - RadioGroup1.Width, ClientHeight）,
     aclYellow,
     aclRed
    ）;
 end;
 font := TGPFont.Create（"Arial Black", 60, FontStyleBold）;
 g.DrawString（"Delphi", -1, font, MakePoint（0.0,0）, b）;
 img.Free;
 b.Free;
 font.Free;
 g.Free;
end;
procedure TForm1.RadioGroup1Click（Sender: TObject）;
begin
 Repaint;
end;
end.