思路可以这样 在DLL里面 1）用SetProp函数将C#写的一个窗口设置成特别的属性 否则要通过C++写DLL 然后用SendNotifyMessage函数将该信息发送给特定属性的托管窗口 ||| static LRESULT CALLBACK ShellHookCallback(int code "FLAG_WND" 比如： SetProp(GetDesktopWindow() 只有键盘和鼠标可以在托管代码中实现全局钩子 用RegisterWindowMessage函数注册信息 捕捉到相应的Hook code后 lparam);} wparam code lparam); } } return CallNextHookEx(hookShell wparam msg "CUSTM_HOOK_HWND_SHELL"); if (msg = 0) { SendNotifyMessage(dstWnd LPARAM lparam){ if (code >= 0) { UINT msg = 0; if (code == HSHELL_ACTIVATESHELLWINDOW) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_ACTIVATESHELLWINDOW"); else if (code == HSHELL_GETMINRECT) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_GETMINRECT"); else if (code == HSHELL_LANGUAGE) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_LANGUAGE"); else if (code == HSHELL_REDRAW) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_REDRAW"); else if (code == HSHELL_TASKMAN) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_TASKMAN"); else if (code == HSHELL_WINDOWACTIVATED) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_WINDOWACTIVATED"); else if (code == HSHELL_WINDOWCREATED) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_WINDOWCREATED"); else if (code == HSHELL_WINDOWDESTROYED) msg = RegisterWindowMessage("CUSTM_HOOK_HSHELL_WINDOWDESTROYED"); HWND dstWnd = (HWND)GetProp(GetDesktopWindow() WPARAM wparam target); 2）挂上钩子 原因貌似.net的垃圾回收机制