用C++写一个键盘函数控制函数

 

#define _WIN32_WINNT 0x0400#pragma comment( lib, "user32.lib" )#include <windows.h>#include <stdio.h>HHOOK hKeyboardHook;__declspec(dllexport) LRESULT CALLBACK KeyboardEvent (int nCode, WPARAM wParam, LPARAM lParam){    DWORD SHIFT_key=0;    DWORD CTRL_key=0;    DWORD ALT_key=0;    if  ((nCode == HC_ACTION) &&   ((wParam == WM_SYSKEYDOWN) ||  (wParam == WM_KEYDOWN)))          {        KBDLLHOOKSTRUCT hooked_key =    *((KBDLLHOOKSTRUCT*)lParam);        DWORD dwMsg = 1;        dwMsg += hooked_key.scanCode << 16;        dwMsg += hooked_key.flags << 24;        char lpszKeyName[1024] = {0};        //lpszKeyName[0] = '[';        int i = GetKeyNameText(dwMsg,   (lpszKeyName+1),0xFF) + 1;        //lpszKeyName[i] = ']';        int key = hooked_key.vkCode;        SHIFT_key = GetAsyncKeyState(VK_SHIFT);        CTRL_key = GetAsyncKeyState(VK_CONTROL);        ALT_key = GetAsyncKeyState(VK_MENU);        if (key >= 'A' && key <= 'Z')           {            if  (GetAsyncKeyState(VK_SHIFT)>= 0) key +=32;            if (CTRL_key !=0 && key == 'y' )            {               MessageBox(NULL, "CTRL-y was pressed\nLaunch your app here", "H O T K E Y", MB_OK);                CTRL_key=0;            }            if (CTRL_key !=0 && key == 'q' )            {                MessageBox(NULL, "Shutting down", "H O T K E Y", MB_OK);                PostQuitMessage(0);            }            //printf("key = %c\n", key);            printf("ha ha, I intercepted your [%c] and changed it to [%c]\n", key, key+1);            SHIFT_key = 0;            CTRL_key = 0;            ALT_key = 0;        }        //printf("lpszKeyName = %s\n",  lpszKeyName );    //  printf("%s",  lpszKeyName );    }    return CallNextHookEx(hKeyboardHook,    nCode,wParam,lParam);}void MessageLoop(){    MSG message;    while (GetMessage(&message,NULL,0,0))     {        TranslateMessage( &message );        DispatchMessage( &message );    }}DWORD WINAPI my_HotKey(LPVOID lpParm){    HINSTANCE hInstance = GetModuleHandle(NULL);    if (!hInstance) hInstance = LoadLibrary((LPCSTR) lpParm);     if (!hInstance) return 1;    hKeyboardHook = SetWindowsHookEx (  WH_KEYBOARD_LL, (HOOKPROC) KeyboardEvent,   hInstance,  NULL    );    MessageLoop();    UnhookWindowsHookEx(hKeyboardHook);    return 0;}int main(int argc, char** argv){    HANDLE hThread;    DWORD dwThread;    hThread = CreateThread(NULL,NULL,(LPTHREAD_START_ROUTINE)   my_HotKey, (LPVOID) argv[0], NULL, &dwThread);    //ShowWindow(FindWindowA("ConsoleWindowClass", NULL), false);    if (hThread) return WaitForSingleObject(hThread,INFINITE);    else return 1;}