zoukankan      html  css  js  c++  java
  • Windows键盘钩子

    Runtime:VS2013

    #include "stdafx.h"
    #include <windows.h>
    #include <conio.h>
    
    DWORD g_main_tid = 0;
    HHOOK g_kb_hook = 0;
    
    bool CALLBACK con_handler(DWORD CtrlType)
    {
        PostThreadMessage(g_main_tid, WM_QUIT, 0, 0);
        return TRUE;
    };
    
    LRESULT CALLBACK kb_proc(int code, WPARAM w, LPARAM l)
    {
        PKBDLLHOOKSTRUCT p = (PKBDLLHOOKSTRUCT)l;
        const char *info = NULL;
        if (w == WM_KEYDOWN)
            info = "key dn";
        else if (w == WM_KEYUP)
            info = "key up";
        else if (w == WM_SYSKEYDOWN)
            info = "sys key dn";
        else if (w == WM_SYSKEYUP)
            info = "sys key up";
        printf("%s - vkCode [%04x], scanCode [%04x]
    ",
            info, p->vkCode, p->scanCode);
        // always call next hook
        return CallNextHookEx(g_kb_hook, code, w, l);
    };
    
    DWORD WINAPI KbHookThread(LPVOID lpParam)
    {
        g_main_tid = GetCurrentThreadId();
    
        //register Ctrl+C callback
        SetConsoleCtrlHandler((PHANDLER_ROUTINE)&con_handler, TRUE);
        g_kb_hook = SetWindowsHookEx(WH_KEYBOARD_LL, //Installs a hook procedure that monitors low-level keyboard input events
            (HOOKPROC)&kb_proc, //A hook procedure that monitors low-level keyboard input events
            NULL,//A handle to the DLL containing the hook procedure pointed to by the lpfn parameter. The hMod parameter must be set to NULL if the dwThreadId parameter specifies a thread created by the current process and if the hook procedure is within the code associated with the current process.(GetModuleHandle(NULL))
            0);//The identifier of the thread with which the hook procedure is to be associated. For desktop apps, if this parameter is zero, the hook procedure is associated with all existing threads running in the same desktop as the calling thread. For Windows Store apps, see the Remarks section.
        if (g_kb_hook == NULL) {
            printf("SetWindowsHookEx failed, %ld
    ", GetLastError());
            return 0;
        }
    
        // Message loop
        MSG msg;
        
    
        //If GetMessage retrieves the WM_QUIT message, the return value is zero.
        while (GetMessage(&msg, NULL, 0, 0)) {
            TranslateMessage(&msg);
            DispatchMessage(&msg);
        }
        
        //exit the thread
        UnhookWindowsHookEx(g_kb_hook);
        return 0;
    };
    
    int _tmain(int argc, _TCHAR* argv[])
    {
        HANDLE h = CreateThread(NULL, 0, KbHookThread, NULL, 0, NULL);
        if (NULL == h) {
            printf("CreateThread failed, %ld
    ", GetLastError());
            return -1;
        }
    
        //wait thread to exit
        WaitForMultipleObjects(1, &h, TRUE, INFINITE);
    
        return 0;
    }
  • 相关阅读:
    父容器直接清除浮动的css
    [原创 js]指定DOM中添加字符串函数
    跨浏览器的透明度解决方案(包括IE8 Beta 2)
    [原创 js]验证表单强度的js
    帧率、码流与分辩率之间关系
    隔行扫描和逐行扫描(interlace and progressive )
    VGA管脚定义
    红眼消除
    HDMI_VGA_CBVS同时显示
    分辨率与行场同步信号的关系
  • 原文地址:https://www.cnblogs.com/LubinLew/p/Windows-Hook-Keyboard.html
Copyright © 2011-2022 走看看