如何设置仅在特定应用程序上单击鼠标的挂钩答案

【问题标题】：How to set hook for mouse clicked on particular application only如何设置仅在特定应用程序上单击鼠标的挂钩
【发布时间】：2018-05-28 09:29:03
【问题描述】：

我正在使用以下代码在鼠标单击事件上创建鼠标钩子：

mousehook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProc, NULL, 0);

可以在鼠标点击时调用MouseHookProc函数。

但是，如果我单击其他应用程序或普通桌面屏幕，仍会调用此 MouseHookProc 函数。我如何才能将此钩子事件仅限于我当前的应用程序？

【问题讨论】：

标签： c++ windows mouseevent setwindowshookex

【解决方案1】：

首先，我认为如果您只是在应用程序中查找鼠标事件，您可能只使用主消息泵而不是挂钩。

但是，使用低级鼠标挂钩，这将处理您的应用程序中的工作，并且在另一个应用程序中时不会干扰

MSLLHOOKSTRUCT *hookStruct = (MSLLHOOKSTRUCT*)lParam;
// hMyMainAppHWND in the line below would already be defined 
// and set when your program starts and gets its handle
if(GetAncestor(WindowFromPoint(hookStruct->pt),GA_ROOTOWNER) != hMyMainAppHWND){ 
    // if the owner of the window where the mouse event occurred 
    // isn't your application's owning window, pass the event on
    return CallNextHookEx(mousehook, nCode, wParam, lParam);
} else {
    // The event occurred on your application
    // Do your stuff here
    // Don't forget to do one of the following:
    // if you want to consume the event, making it as though it never happened:
    // return TRUE; 
    // if you want the event to be processed as normal:
    // return CallNextHookEx(mousehook, nCode, wParam, lParam); 
}

【讨论】：