我想创建一个实用的按键程序,所以我可以做的事情一样杀了preprogrammed过程中或启动的东西。我想我应该持有任何应用CMD,然后输入一个4位数的命令键,以便我可以启动或迅速杀死任何东西,而编程,调试观看视频等。
我想出如何获得键盘的回调,但是由于各种原因,一旦我点击到另一个应用程序,我的击键UTIL没有收到更多的键。即使我点击回到我的控制台窗口或MSVC,我将不会收到任何输入。这是除非其全球,让我怎么设置挂钩,是全球性的?
我的code是
INT的main(){ 钩=调用SetWindowsHookEx(WH_KEYBOARD,KeyboardProc,的GetModuleHandle(0),0); 味精味精; 而(的GetMessage(安培;味精,NULL,0,0)大于0) { 的TranslateMessage(安培;味精); 在DispatchMessage(安培;味精); } UnhookWindowsHookEx(钩);}解决方案
为了您的键盘钩子可以从所有进程访问,它被放置在随后将被加载到每个进程的地址空间的DLL。要记住一个重要的事情是,由于该DLL的每个实例在一个单独的进程中加载,每次都会有自己的DLL中的任何全局变量的副本。如果您需要共享这些实例间的数据,最简单的方法是创建在DLL中的共享数据段。下面code是我写了一个RSI监测方案。
////一些数据会在所有共享//该DLL的实例//的#pragma评论(连接器,/SECTION:.SHARED,RWS)的#pragma data_seg(共享)INT iKeyCount = 0;HHOOK hKeyboardHook = 0;HHOOK hMouseHook = 0;的#pragma data_seg()////特定实例数据//HMODULE的hInstance = 0;//// DLL加载/卸载入口点//BOOL APIENTRY的DllMain(HANDLE HMODULE, DWORD dwReason, LPVOID升preserved){ 开关(dwReason) { 案例DLL_PROCESS_ATTACH: 实例句柄=(HINSTANCE)HMODULE; 打破; 案例DLL_THREAD_ATTACH: 打破; 案例DLL_THREAD_DETACH: 打破; 案例DLL_PROCESS_DETACH: 打破; } 返回TRUE;}////键盘钩子//LRESULT CALLBACK KeyboardProc(INT code,//钩子code WPARAM wParam中,//虚拟键code LPARAM lParam的)//击键消息信息{ 如果((lParam的&放大器;!为0x80000000)= 0) { ++ iKeyCount; } 返回CallNextHookEx方法(hKeyboardHook,code,的wParam,lParam的);}////鼠标钩子//LRESULT CALLBACK MouseProc(INT code,//钩子code WPARAM wParam中,//消息标识 LPARAM lParam的)//鼠标坐标{ 开关(wParam中) { 案件WM_LBUTTONDOWN: 案例WM_MBUTTONDOWN: 案件WM_RBUTTONDOWN: 案例WM_LBUTTONDBLCLK: 案例WM_MBUTTONDBLCLK: 案例WM_RBUTTONDBLCLK: ++ iKeyCount; 打破; } 返回CallNextHookEx方法(hMouseHook,code,的wParam,lParam的);}////安装键盘/鼠标挂钩//无效KBM_API InstallHooks(无效){ hKeyboardHook =调用SetWindowsHookEx(WH_KEYBOARD,KeyboardProc,的hInstance,0); hMouseHook =调用SetWindowsHookEx(WH_MOUSE,MouseProc,的hInstance,0);}////删除键盘/鼠标挂钩//无效KBM_API RemoveHooks(无效){ UnhookWindowsHookEx(hKeyboardHook); UnhookWindowsHookEx(hMouseHook); hKeyboardHook = hMouseHook = 0;}////检索击键数//INT KBM_API FetchKeyCount(布尔bClear){ INT KC = iKeyCount; 如果(bClear) iKeyCount = 0; 返回KC;}I am trying to create a utility keystroke app so i can do things like kill a preprogrammed process or launch something. I am thinking I should hold cmd in any app, then type in a 4 digit command key so I can launch or kill anything quickly while programming, debugging watching a video, etc.
I figured out how to get the keyboard callback, but for whatever reason once I click into another app, my keystroke util receives no more keys. Even if I click back to my console window or msvc, I will not receive any input. This is unless its global, so how do I set the hook to be global?
My code is
int main() { hook = SetWindowsHookEx(WH_KEYBOARD, KeyboardProc, GetModuleHandle(0), 0); MSG msg; while(GetMessage(&msg, NULL, 0, 0) > 0) { TranslateMessage(&msg); DispatchMessage(&msg); } UnhookWindowsHookEx(hook); }解决方案
In order for your keyboard hook to be accessible from all processes, it has to be placed in a DLL which will then be loaded into each process' address space. One important thing to keep in mind is that since each instance of the DLL is loaded in a separate process, each will have its own copy of any global variables in the DLL. If you need to share data between these instances, the simplest way is to create a shared data segment in the DLL. The following code is from an RSI monitoring program I wrote.
// // some data will be shared across all // instances of the DLL // #pragma comment(linker, "/SECTION:.SHARED,RWS") #pragma data_seg(".SHARED") int iKeyCount = 0; HHOOK hKeyboardHook = 0; HHOOK hMouseHook = 0; #pragma data_seg() // // instance specific data // HMODULE hInstance = 0; // // DLL load/unload entry point // BOOL APIENTRY DllMain(HANDLE hModule, DWORD dwReason, LPVOID lpReserved) { switch (dwReason) { case DLL_PROCESS_ATTACH : hInstance = (HINSTANCE) hModule; break; case DLL_THREAD_ATTACH : break; case DLL_THREAD_DETACH : break; case DLL_PROCESS_DETACH : break; } return TRUE; } // // keyboard hook // LRESULT CALLBACK KeyboardProc(int code, // hook code WPARAM wParam, // virtual-key code LPARAM lParam) // keystroke-message information { if ((lParam & 0x80000000) != 0) { ++iKeyCount; } return CallNextHookEx(hKeyboardHook, code, wParam, lParam); } // // mouse hook // LRESULT CALLBACK MouseProc(int code, // hook code WPARAM wParam, // message identifier LPARAM lParam) // mouse coordinates { switch (wParam) { case WM_LBUTTONDOWN : case WM_MBUTTONDOWN : case WM_RBUTTONDOWN : case WM_LBUTTONDBLCLK : case WM_MBUTTONDBLCLK : case WM_RBUTTONDBLCLK : ++iKeyCount; break; } return CallNextHookEx(hMouseHook, code, wParam, lParam); } // // install keyboard/mouse hooks // void KBM_API InstallHooks(void) { hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD, KeyboardProc, hInstance, 0); hMouseHook = SetWindowsHookEx(WH_MOUSE, MouseProc, hInstance, 0); } // // remove keyboard/mouse hooks // void KBM_API RemoveHooks(void) { UnhookWindowsHookEx(hKeyboardHook); UnhookWindowsHookEx(hMouseHook); hKeyboardHook = hMouseHook = 0; } // // retrieve number of keystrokes // int KBM_API FetchKeyCount(bool bClear) { int kc = iKeyCount; if (bClear) iKeyCount = 0; return kc; }
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