我是想設1個server   接收到1個指定的packet... 就會開始攝取1次畫面...
問題是...當將bmp轉做jpg後 把jpg free時 就發生錯誤...
sc:=tcanvas.create;

bmp:=tbitmap.create;

jpg:=tjpegimage.Create;

sc.Handle:=getdc(hwnd_desktop);

memo1.Lines.add(cmd);

bmp.Width:=screen.Width;

bmp.Height:=screen.Height;

bmp.Palette:=1;

scnprt:=true;

end;

bmp.PixelFormat:=pf8bit;

bmp.Canvas.CopyRect(rect(0,0,screen.width,screen.Height),sc,rect(0,0,screen.width,screen.Height));

st:=tmemorystream.Create;

jpg.Assign(bmp);

Image1.Picture.Assign(jpg);

jpg.SaveToStream(st);

jpg.Free;

錯誤是... Access violation at address xxxxxxxx in module proj.exe
這樣.....究竟是為什麼呢><