全域性鍵盤鉤子

#include <Windows.h>
#include "WinUser.h"
#include <iostream>

using namespace std;

// variable to store the HANDLE to the hook. Don't declare it anywhere else then globally
// or you will get problems since every function uses this variable.
HHOOK _hook;

// This struct contains the data received by the hook callback. As you see in the callback function
 

// it contains the thing you will need: vkCode = virtual key code.
KBDLLHOOKSTRUCT kbdStruct;

// This is the callback function. Consider it the event that is raised when, in this case,
// a key is pressed.
//LRESULT __stdcall HookCallback(int nCode, WPARAM wParam, LPARAM lParam)
LRESULT CALLBACK KeyboardProc(int
 
 nCode, WPARAM wParam, LPARAM lParam)

{
    if (nCode >= 0)
    {
        // the action is valid: HC_ACTION.
        if (wParam == WM_KEYDOWN)
        {
            // lParam is the pointer to the struct containing the data needed, so cast and assign it to kdbStruct.
            kbdStruct = *((KBDLLHOOKSTRUCT*)lParam);
            // a key (non-system) is pressed.
 

            if (kbdStruct.vkCode == VK_F1)
            {
                // F1 is pressed!
                //MessageBox(NULL, "F1 is pressed!", "key pressed", MB_ICONINFORMATION);
                cout << "f1 pressed" << endl;

                //return 1;
            }
        }
    }

    // call the next hook in the hook chain. This is nessecary or your hook chain will break and the hook stops
    return CallNextHookEx(_hook, nCode, wParam, lParam);
}

void SetHook()
{
    // Set the hook and set it to use the callback function above
    // WH_KEYBOARD_LL means it will set a low level keyboard hook. More information about it at MSDN.
    // The last 2 parameters are NULL, 0 because the callback function is in the same thread and window as the
    // function that sets and releases the hook. If you create a hack you will not need the callback function
    // in another place then your own code file anyway. Read more about it at MSDN.
    if (!(_hook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyboardProc, NULL, 0)))
    {
        MessageBox(NULL, "Failed to install hook!", "Error", MB_ICONERROR);
    }
}

void ReleaseHook()
{
    UnhookWindowsHookEx(_hook);
}

void main()
{
    // Set the hook
    SetHook();

    // Don't mind this, it is a meaningless loop to keep a console application running.
    // I used this to test the keyboard hook functionality. If you want to test it, keep it in ;)
    MSG msg;
    while (GetMessage(&msg, NULL, 0, 0))
    {

    }


    //while (true)
    //{
    //}

}

鍵盤事件模擬觸發

keybd_event(0x55, 0, 0, 0);
keybd_event(0x55, 0, KEYEVENTF_KEYUP, 0);