C++builder中使用TScrollBox 以后，让scrollBox相应鼠标的上下滑动

1.在窗口的事件里搜索 mouseWheel的方法

2.在.cpp文件里实现下面的代码

void __fastcall TForm1::mouseWheel(TObject *Sender, TShiftState Shift, int WheelDelta,
TPoint &MousePos, bool &Handled)
{

if ( WheelDelta < 0 )
SendMessage(scrlbx1->Handle,WM_VSCROLL, SB_LINEDOWN, 0); //向下滚
else
SendMessage(scrlbx1->Handle,WM_VSCROLL, SB_LINEUP, 0); //向上滚

}

}