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 程式師世界 >> 編程語言 >> 更多編程語言 >> Delphi >> Delphi與DirectX之DelphiX(80): TDIB.BlendPixel();

Delphi與DirectX之DelphiX(80): TDIB.BlendPixel();

編輯:Delphi

本例效果圖:

代碼文件:

unit Unit1;
interface
uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, DIB, StdCtrls;
type
  TForm1 = class(TForm)
   DXPaintBox1: TDXPaintBox;
   Button1: TButton;
   Button2: TButton;
   procedure Button1Click(Sender: TObject);
   procedure Button2Click(Sender: TObject);
  end;
var
  Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
const
  ImgPath1 = 'C:\Temp\DX.jpg';
begin
  DXPaintBox1.DIB.LoadFromFile(ImgPath1);
  DXPaintBox1.Width := DXPaintBox1.DIB.Width;
  DXPaintBox1.Height := DXPaintBox1.DIB.Height;
  DXPaintBox1.Repaint;
end;
procedure TForm1.Button2Click(Sender: TObject);
var
  w,h,i: Integer;
begin
  w := DXPaintBox1.DIB.Width;
  h := DXPaintBox1.DIB.Height;
  for i := 0 to 9999 do begin
   DXPaintBox1.DIB.BlendPixel(Random(w), Random(h div 2), clRed, 255);
   DXPaintBox1.DIB.BlendPixel(Random(w), Random(h div 2) + (h div 2), clRed, 64);
  end;
  DXPaintBox1.Repaint;
end;
end.

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