屏蔽系统热键ctrl+alt+delete

#include "chook.h" //#include "ClientDef.h" #include <QDebug> #include <QSettings> #include <QApplication> //在注册表该目录下增加新内容 #define TASKMANAGERSystem "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System" #define TASKMANAGERExplorer "HKEY_CURRENT_USER\\Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\Explorer" HHOOK keyHook = NULL; HHOOK mouseHook = NULL; //键盘钩子过程 LRESULT CALLBACK keyProc(int nCode,WPARAM wParam,LPARAM lParam ) { //在WH_KEYBOARD_LL模式下lParam 是指向KBDLLHOOKSTRUCT类型地址 KBDLLHOOKSTRUCT *pkbhs = (KBDLLHOOKSTRUCT *) lParam; //如果nCode等于HC_ACTION则处理该消息，如果小于0，则钩子子程就必须将该消息传递给 CallNextHookEx if(nCode == HC_ACTION) { if((pkbhs->vkCode == VK_ESCAPE && GetAsyncKeyState(VK_CONTROL)& 0x8000 && GetAsyncKeyState(VK_SHIFT)&0x8000)|| //"Ctrl+Shift+Esc" (pkbhs->vkCode == VK_ESCAPE && GetAsyncKeyState(VK_CONTROL) & 0x8000) || //"Ctrl+Esc" (pkbhs->vkCode == VK_TAB && pkbhs->flags & LLKHF_ALTDOWN )|| //"Alt+Tab" (pkbhs->vkCode == VK_ESCAPE && pkbhs->flags &LLKHF_ALTDOWN )|| //"Alt+Esc" (pkbhs->vkCode == VK_LWIN || pkbhs->vkCode == VK_RWIN )|| // "LWIN/RWIN" (pkbhs->vkCode == VK_F4 && pkbhs->flags & LLKHF_ALTDOWN )) //"Alt+F4" { return 1;//返回1表示截取消息不再传递,返回0表示不作处理,消息继续传递 } // if (pkbhs->vkCode == VK_ESCAPE) // { // qApp->quit(); // } } return CallNextHookEx(keyHook, nCode, wParam, lParam); } //鼠标钩子过程 LRESULT CALLBACK mouseProc(int nCode,WPARAM wParam,LPARAM lParam ) { return 1; } CHook::CHook(QObject *parent) : QObject(parent) { } CHook::~CHook() { } void CHook::lockAll(bool flag) { hook(flag); closeTaskManager(flag); closeTaskWindow(flag); } //安装钩子,调用该函数即安装钩子 void CHook::hook(bool flag) { if (flag) { //这两个底层钩子,不要DLL就可以全局 //底层键盘钩子 keyHook =SetWindowsHookEx( WH_KEYBOARD_LL,keyProc,GetModuleHandle(NULL),0); //底层鼠标钩子 // mouseHook =SetWindowsHookEx( WH_MOUSE_LL,mouseProc,GetModuleHandle(NULL),0); } else { UnhookWindowsHookEx(keyHook); // UnhookWindowsHookEx(mouseHook); } } //添加注册屏蔽Ctrl+Alt+del void CHook::closeTaskManager(bool flag) { // 屏蔽ctrl + alt +del 需要修改注册表的值， 取得管理员权限， 关闭360等杀毒软件 int value = flag ? 0x00000001 : 0x00000000; QSettings *settings = new QSettings(TASKMANAGERSystem, QSettings::NativeFormat); settings->setValue("DisableTaskMgr", value); //任务管理器 settings->setValue("DisableChangePassword", value); //更改密码 settings->setValue("DisableLockWorkstation", value); //锁定计算机 settings->setValue("DisableSwitchUserOption", value); //切换用户 QSettings *settings2 = new QSettings(TASKMANAGERExplorer, QSettings::NativeFormat); settings2->setValue("NoLogOff", value); //注销 delete settings; delete settings2; } //屏蔽任务栏 void CHook::closeTaskWindow(bool flag) { if (!flag) { ShowWindow(task, SW_SHOW); ShowWindow(desktop, SW_SHOW);//显示 } else { task=FindWindow(L"Shell_TrayWnd",NULL); desktop = FindWindow(L"ProgMan", NULL); ShowWindow(task,SW_HIDE); ShowWindow(desktop, SW_HIDE);//隐藏桌面 } }