C++ builder 精确提示

void __fastcall TForm1::Button1Click(TObject *Sender)
{
   THintWindow *hw;
   TRect rect(
      Mouse->CursorPos.x,
      Mouse->CursorPos.y+25,
      Mouse->CursorPos.x+200,
      Mouse->CursorPos.y+50
   );
   hw = new THintWindow(Application);
   hw->ActivateHint(rect,"hello!");
   Sleep(2000);
   delete hw;
}

我找到答案了。。希望其他兄弟可以学习下。