调用资源文件

Question

我编了一个资源文件，是（1）这样，我用(2)和（3）两种方法调用，请问为什么第一种方法不行啊？提示找不到MyJpg，为什么啊？第二种只是用了try和finally和end啊
如果要第一种可用，改怎么改，不要用try方法，谢谢
(1)MyJpg JPEG　My.JPG
(2)var
jpg: TJPEGImage;
resStream: TResourceStream;
begin
resStream:=TResourceStream.Create(HInstance, 'MyJpg', 'JPEG');
jpg := TJPEGImage.Create;
jpg.LoadFromStream(resStream);
Image1.Picture.Assign(jpg);
jpg.Free;
resStream.Free;
end;(3)Var
Stream:TStream;
MyJpg:TJpegImage;
Begin
Stream:=TResourceStream.Create(HINSTANCE,'MyJpg','JPEG');
Try
MyJpg:=TJpegImage.Create;
Try
MyJpg.LoadfromStream(Stream);
Image1.Picture.Assign(MyJpg);
Finally
MyJpg.Free;
end;
Finally
Stream.Free;
end;
end;

Answer 1

//测试可以啊！
{$R MyJpg.res} // 注意资源文件要引用uses jpeg;procedure TForm1.Button1Click(Sender: TObject);
var
  jpg: TJPEGImage;
  resStream: TResourceStream;
begin
  resStream:=TResourceStream.Create(HInstance, 'MyJpg', 'JPEG');
  jpg := TJPEGImage.Create;
  jpg.LoadFromStream(resStream);
  Image1.Picture.Assign(jpg);
  jpg.Free;
  resStream.Free;
end;