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.