Visual C＋＋设计超强仿QQ自动伸缩窗口

m_isSizeChanged = FALSE;
m_isSetTimer = FALSE;m_hsFinished = TRUE;
m_hiding = FALSE;m_oldWndHeight = MINCY;
m_taskBarHeight = 30;
m_edgeHeight = 0;
m_edgeWidth=0;
m_hideMode = HM_NONE;

int CQQHideWndDlg::OnCreate(LPCREATESTRUCT lpCreateStruct) 
{
if (CDialog::OnCreate(lpCreateStruct) == -1)
return -1; 
// TODO: Add your specialized creation code here
//获得任务栏高度
CWnd* p;
p = this->FindWindow("Shell_TrayWnd",NULL);
if(p != NULL)
{
CRect tRect;
p->GetWindowRect(tRect);
m_taskBarHeight = tRect.Height();
}
//修改风格使得他不在任务栏显示
ModifyStyleEx(WS_EX_APPWINDOW, WS_EX_TOOLWINDOW);
//去掉关闭按键(如果想画3个按键的话)
//ModifyStyle(WS_SYSMENU,NULL);
//获得边缘高度和宽度
m_edgeHeight = GetSystemMetrics(SM_CYEDGE);
m_edgeWidth = GetSystemMetrics(SM_CXFRAME);
return 0;
} 

UINT CQQHideWndDlg::OnNcHitTest(CPoint point) 
{
// TODO: Add your message handler code here and/or call default
CString str;
str.Format("Mouse (%d,%d)",point.x,point.y);
GetDlgItem(IDC_CURSOR)->SetWindowText(str);
if(m_hideMode != HM_NONE && !m_isSetTimer &&
//防止鼠标超出屏幕右边时向右边收缩造成闪烁
point.x < GetSystemMetrics(SM_CXSCREEN) + INFALTE)
{ //鼠标进入时,如果是从收缩状态到显示状态则开启Timer
SetTimer(1,CM_ELAPSE,NULL);
m_isSetTimer = TRUE; 
m_hsFinished = FALSE;
m_hiding = FALSE;
SetTimer(2,HS_ELAPSE,NULL); //开启显示过程
}
return CDialog::OnNcHitTest(point);
}

void CQQHideWndDlg::OnTimer(UINT nIDEvent) 
{
// TODO: Add your message handler code here and/or call default
if(nIDEvent == 1 )
{
POINT curPos;
GetCursorPos(&curPos); 
CString str;
str.Format("Timer On(%d,%d)",curPos.x,curPos.y);
GetDlgItem(IDC_TIMER)->SetWindowText(str);
CRect tRect;
//获取此时窗口大小
GetWindowRect(tRect);
//膨胀tRect,以达到鼠标离开窗口边沿一定距离才触发事件
tRect.InflateRect(INFALTE,INFALTE); 
if(!tRect.PtInRect(curPos)) //如果鼠标离开了这个区域
{
KillTimer(1); //关闭检测鼠标Timer
m_isSetTimer = FALSE;
GetDlgItem(IDC_TIMER)->SetWindowText("Timer Off");
m_hsFinished = FALSE; 
m_hiding = TRUE;
SetTimer(2,HS_ELAPSE,NULL); //开启收缩过程
}
}
if(nIDEvent == 2)
{
if(m_hsFinished) //如果收缩或显示过程完毕则关闭Timer 
KillTimer(2);
else
m_hiding ? DoHide() : DoShow();
}
CDialog::OnTimer(nIDEvent);
}