HOOK。另一个程序单击某个按钮时，弹出自己的对话框。

下面是MouseProc：

LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam){    if (nCode == HC_ACTION)    {        RECT rc;        TCHAR buff[512];                MOUSEHOOKSTRUCT *pMouseHookParam = reinterpret_cast<MOUSEHOOKSTRUCT*>(lParam);        switch(wParam) {               //鼠标消息        case WM_LBUTTONUP:      //用WM_LBUTTONDOWN也行，但不能看到单击效果，感觉怪怪的。            GetWindowRect(pMouseHookParam->hwnd,&rc);      //取得鼠标单击时某个控件的工作区            GetClassName(pMouseHookParam->hwnd,buff,512);   //取得类名            if (_tcscmp(buff,_T("TTeThemePanel")) == 0)            //还好整个工作区就这一个Panel，当然也可以用枚举窗口的句柄进行比较，因为这句柄以后也要用的。这里为方便。            {                if (pMouseHookParam->pt.x>rc.right-46 && pMouseHookParam->pt.x<rc.right-22                     && pMouseHookParam->pt.y>rc.bottom-30 && pMouseHookParam->pt.y<rc.bottom-5)   //判断是否我要找的区域                {                    ShowDlg();                    return 1;      //不让其弹出它自己的窗口，非0就行。                }                            }            break;        default:            break;        }    }    return (CallNextHookEx(g_hook, nCode, wParam, lParam));

}

 转发 https://www.cnblogs.com/laoa/archive/2005/11/08/271768.html