| 查看: 606 | 回复: 6 | |||
| 当前主题已经存档。 | |||
[交流]
【原创】关于Low Level Keyboard Hook，万恶的SDK啊~~
|
|||
|
今天要做点事情，需要屏蔽Win键，于是想到用WH_KEYBOARD_LL，随便看了下VS6.0自带的MSDN里LowLevelKeyboardProc的描述： The LowLevelKeyboardProc hook procedure is an application-defined or library-defined callback function used with the SetWindowsHookEx function. The system calls this function every time a new keyboard input event is about to be posted into a thread input queue. The keyboard input can come from the local keyboard driver or from calls to thekeybd_event function. If the input comes from a call to keybd_event, the input was "injected". 于是写了类似下面的代码： void f() { HHOOK hHook = NULL; HANDLE hThread = NULL; __try { hHOOK = SetWindowHookExhInstance,WH_KEYBOARD_LL,LowLevelKeyboardProc,0); if（NULL == hHook) __leave; hThread=(HANDLE) _beginthread(.......); if ((HANDLE)1 == hThread) __leave; WaitForSingleObject(hThread); } __finally { if (NULL != hThread) CloseHandle(hThread); if (NULL != hHook) UnhookWindowsHookEx(hHook); } } 结果发现，安装的HOOK不起作用，研究了很久也不明白怎么回事，正在郁闷中，突然看到Win2K3的SDK Documentation里对LowLevelKeyboardProc的描述是： The LowLevelKeyboardProc hook procedure is an application-defined or library-defined callback function used with the SetWindowsHookEx function. The system calls this function every time a new keyboard input event is about to be posted into a thread input queue. The keyboard input can come from the local keyboard driver or from calls to the keybd_event function. If the input comes from a call to keybd_event, the input was "injected". However, the WH_KEYBOARD_LL hook is not injected into another process. Instead, the context switches back to the process that installed the hook and it is called in its original context. Then the context switches back to the application that generated the event. 天啊，平白无故的多出来一段，真是万恶的SDK啊~~！ |
回复此楼» 猜你喜欢
国家基金申请书模板内插入图片不可调整大小?
已经有6人回复
-
交叉科学部支持青年基金，对三无青椒是个机会吗？
已经有4人回复
-
招博士
已经有6人回复
-
限项规定
已经有8人回复
-
国家级人才课题组招收2026年入学博士
已经有5人回复
-
Fe3O4@SiO2合成
已经有6人回复
-
青年基金C终止
已经有4人回复
-
青椒八年已不青，大家都被折磨成啥样了？
已经有7人回复
-
为什么nbs上溴 没有产物点出现呢
已经有10人回复
-
救命帖
已经有11人回复
2楼2009-09-10 18:54:17
3楼2009-09-10 19:48:13
4楼2009-09-10 21:36:48
5楼2009-09-11 00:04:32
6楼2009-09-11 08:24:23
7楼2009-09-11 14:18:03