unitfrmmain.pas

精彩编程百例51～75 其中有 cpu速度测试 检测声卡 查询内存信息 图像处理技巧 模拟放大镜效果等待

unit unitFrmMain;

interface

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

type
  TForm1 = class(TForm)
    Button1: TButton;
    Image1: TImage;
    Button2: TButton;
    Button3: TButton;
    Button4: TButton;
    Button5: TButton;
    Panel1: TPanel;
    procedure Button1Click(Sender: TObject);
    procedure Button2Click(Sender: TObject);
    procedure Button3Click(Sender: TObject);
    procedure Button4Click(Sender: TObject);
    procedure Button5Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.DFM}

procedure TForm1.Button1Click(Sender: TObject);
var
  newbmp: TBitmap;
  i, j, bmpheight, bmpwidth: integer;
begin
  newbmp := TBitmap.Create;
  newbmp.Width := image1.Width;
  newbmp.Height := image1.Height;
  bmpheight := image1.Height;
  bmpwidth := image1.Width;
  i := 0;

  while i <= bmpwidth do
    begin
      j := i;
      while j > 0 do
        begin
          newbmp.Canvas.CopyRect(Rect(j - 1, 0, j, bmpheight), image1.Canvas, Rect(bmpwidth - i + j - 1, 0, bmpwidth - i + j, bmpheight));
          newbmp.Canvas.CopyRect(Rect(bmpwidth - j, 0, bmpwidth - j + 1, bmpheight), image1.Canvas, Rect(i - j, 0, i - j + 1, bmpheight));
          j := j - 2;
        end;
      form1.Canvas.Draw(380, 32, newbmp);
      i := i + 2;
      sleep(10);
    end;
  newbmp.free;
end;

procedure TForm1.Button2Click(Sender: TObject);

var
  newbmp: TBitmap;
  i, j, bmpheight, bmpwidth: integer;
begin
  newbmp := TBitmap.Create;
  newbmp.Width := image1.Width;
  newbmp.Height := image1.Height;
  bmpheight := image1.Height;
  bmpwidth := image1.Width;
  i := 0;
  while i <= bmpheight do
    begin
      j := i;
      while j > 0 do
        begin
          newbmp.Canvas.CopyRect(Rect(0, j - 1, bmpwidth, j),
            image1.Canvas,
            Rect(0, bmpheight - i + j - 1, bmpwidth, bmpheight - i + j));
          newbmp.Canvas.CopyRect(Rect
            (0, bmpheight - j, bmpwidth, bmpheight - j + 1),
            image1.Canvas,
            Rect(0, i - j, bmpwidth, i - j + 1));
          j := j - 2;
        end;
      form1.Canvas.Draw(380, 32, newbmp);
      i := i + 2;
      sleep(20);
    end;
  newbmp.free;
end;

procedure TForm1.Button3Click(Sender: TObject);
var
  newbmp: TBitmap;
  i, j, bmpheight, bmpwidth: integer;
begin
  newbmp := TBitmap.Create;
  newbmp.Width := image1.Width;
  newbmp.Height := image1.Height;
  bmpheight := image1.Height;
  bmpwidth := image1.Width;
  for i := bmpheight downto 1 do
    for j := 1 to i do
      begin
        newbmp.Canvas.CopyRect(Rect(0, j - 1, bmpwidth, j),
          image1.Canvas,
          Rect(0, i - 1, bmpwidth, i));
        form1.Canvas.Draw(380, 32, newbmp);
      end;
  newbmp.free;
end;

procedure TForm1.Button4Click(Sender: TObject);
var
  newbmp: TBitmap;
  i, j, bmpheight, bmpwidth: integer;
  xgroup, xcount: integer;
begin
  newbmp := TBitmap.Create;
  newbmp.Width := image1.Width;
  newbmp.Height := image1.Height;
  bmpheight := image1.Height;
  bmpwidth := image1.Width;
  xgroup := 20;
  xcount := bmpheight div xgroup;
  for i := 0 to xcount do
    for j := 0 to xgroup do
      begin
        newbmp.Canvas.CopyRect(Rect
          (0, xcount * j + i - 1, bmpwidth, xcount * j + i),
          image1.Canvas,
          Rect(0, xcount * j + i - 1, bmpwidth, xcount * j + i));
        form1.Canvas.Draw(380, 32, newbmp);
        sleep(5);
      end;
  newbmp.Free;
end;

procedure TForm1.Button5Click(Sender: TObject);
begin
  close;  //退出
end;


end.