MFC获取KeyBoard的事件来移动窗体的位置

////////////////////////////////////////////////////////////////////////////
//Static Var
static int LeftPos = 0;
static int RightPos = 0;
static int UpPos = 0;
static int DownPos = 0;

//用来保存坐标的位置

BOOL CKeyTestDlg::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class

switch (pMsg->message)
{
case WM_KEYDOWN :

switch (pMsg->wParam)
{
case VK_LEFT:
{

LeftPos -= 5;

if ((LeftPos + RightPos+10) <= 0)
{
LeftPos = 0;
RightPos = 0;
}

MoveWindow( (LeftPos + RightPos+10),(UpPos+DownPos+10), 200, 200);
break;
}

case VK_RIGHT:
{
RightPos += 5;

if ((LeftPos + RightPos+10) <= 0)
{
LeftPos = 0;
RightPos = 0;
}

MoveWindow( (LeftPos + RightPos+10),(UpPos+DownPos+10), 200, 200);
break;
}

case VK_UP:
{
UpPos -= 5;

if ((UpPos+DownPos+10) <= 0)
{
UpPos = 0;
DownPos = 0;
}

MoveWindow( (LeftPos + RightPos+10),(UpPos+DownPos+10), 200, 200);

break;
}

case VK_DOWN:
{
DownPos += 5;

if ((UpPos+DownPos+10) <= 0)
{
UpPos = 0;
DownPos = 0;
}

MoveWindow( (LeftPos + RightPos+10),(UpPos+DownPos+10), 200, 200);
break;
}

}//End switch

break;
}

return CDialog::PreTranslateMessage(pMsg);
}