Delphi 与 DirectX 之 DelphiX(16): DXImageList1.Items.Find();

本例效果图:

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代码文件:

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unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, DXDraws, StdCtrls;



type

  TForm1 = class(TForm)

    DXDraw1: TDXDraw;

    DXImageList1: TDXImageList;

    Button1: TButton;

    Button2: TButton;

    procedure FormCreate(Sender: TObject);

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



{加载图片并命名, 这也可以在设计时做}

procedure TForm1.FormCreate(Sender: TObject);

const

  ImgPath1 = 'C:\Temp\DelphiX.bmp';

  ImgPath2 = 'C:\Temp\DelphiX.jpg';

begin

  DXImageList1.DXDraw := DXDraw1;



  DXImageList1.Items.Add;

  DXImageList1.Items[DXImageList1.Items.Count-1].Picture.LoadFromFile(ImgPath1);

  DXImageList1.Items[DXImageList1.Items.Count-1].Name := 'img1';



  DXImageList1.Items.Add;

  DXImageList1.Items[DXImageList1.Items.Count-1].Picture.LoadFromFile(ImgPath2);

  DXImageList1.Items[DXImageList1.Items.Count-1].Name := 'img2';

end;



procedure TForm1.Button1Click(Sender: TObject);

begin

  DXDraw1.Surface.Fill(0);

  DXImageList1.Items.Find('img1').Draw(DXDraw1.Surface, 0, 0, 0);

  DXDraw1.Flip;

end;



procedure TForm1.Button2Click(Sender: TObject);

begin

  DXDraw1.Surface.Fill(0);

  DXImageList1.Items.Find('img2').Draw(DXDraw1.Surface, 0, 0, 0);

  DXDraw1.Flip;

end;



end.