//Copy from hubdog,Hope it useful!
{$R FOO.RES}
uses Jpeg;
procedure LoadJPEGFromRes(TheJPEG : string; ThePicture : TPicture);
var
ResHandle : THandle;
MemHandle : THandle;
MemStream : TMemoryStream;
ResPtr : PByte;
ResSize : Longint;
JPEGImage : TJPEGImage;
begin
ResHandle := FindResource(hInstance, PChar(TheJPEG), 'JPEG');
MemHandle := LoadResource(hInstance, ResHandle);
ResPtr := LockResource(MemHandle);
MemStream := TMemoryStream.Create;
JPEGImage := TJPEGImage.Create;
ResSize := SizeOfResource(hInstance, ResHandle);
MemStream.SetSize(ResSize);
MemStream.Write(ResPtr^, ResSize);
FreeResource(MemHandle);
MemStream.Seek(0, 0);
JPEGImage.LoadFromStream(MemStream);
ThePicture.Assign(JPEGImage);
JPEGImage.Free;
MemStream.Free;
end;
procedure TForm1.Button1Click(Sender: TObject);
begin
LoadJPEGFromRes('MYJPEG', Image1.Picture);
end;