windows锁屏程序

#include "mainwindow.h"

#include "ui_mainwindow.h"

#include "windows.h"

#include 

#include 

HHOOK keyHook = NULL;

LRESULT CALLBACK keyProc(int nCode,WPARAM wParam,LPARAM lParam );

DWORD GetProcessIDFromName(LPCSTR szName)

{

    DWORD id = 0;       // 进程ID

    PROCESSENTRY32 pe;  // 进程信息

    pe.dwSize = sizeof(PROCESSENTRY32);

    HANDLE hSnapshot = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0); // 获取系统进程列表

    if(Process32First(hSnapshot, &pe))      // 返回系统中第一个进程的信息

    {

        do

        {

            if(0 == _stricmp(pe.szExeFile, szName)) // 不区分大小写比较

            {

                id = pe.th32ProcessID;

                break;

            }

        }while(Process32Next(hSnapshot, &pe));      // 下一个进程

    }

    CloseHandle(hSnapshot);     // 删除快照

    return id;

}

void initHook()

{

    keyHook = SetWindowsHookEx(WH_KEYBOARD_LL, keyProc, GetModuleHandle(NULL), 0);

}

void unHook()

{

    UnhookWindowsHookEx(keyHook);

}

//钩子用的函数

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){

                    qDebug() << "Ctrl+Shift+Esc";

                    return 1;

        }else if(pkbhs->vkCode == VK_ESCAPE && GetAsyncKeyState(VK_CONTROL) & 0x8000){

            qDebug() << "Ctrl+Esc";

            return 1;

        }else if(pkbhs->vkCode == VK_TAB && pkbhs->flags & LLKHF_ALTDOWN){

            qDebug() << "Alt+Tab";

            return 1;

        }else if(pkbhs->vkCode == VK_ESCAPE && pkbhs->flags &LLKHF_ALTDOWN){

            qDebug() << "Alt+Esc";

            return 1;

        }else if(pkbhs->vkCode == VK_LWIN || pkbhs->vkCode == VK_RWIN){

            qDebug() << "LWIN/RWIN";

            return 1;

        }/*else if(pkbhs->vkCode == VK_F4 && pkbhs->flags & LLKHF_ALTDOWN){

            qDebug() << "Alt+F4";

        }

        if(pkbhs->vkCode == VK_F1 && pkbhs->flags &LLKHF_ALTDOWN) {

            unHook();

            qDebug() << "Alt+F1 back room";

        }*/

        return 0;//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

    }

    return CallNextHookEx(keyHook, nCode, wParam, lParam);

}

MainWindow::MainWindow(QWidget *parent) :

    QWidget(parent),

    ui(new Ui::MainWindow)

{

    ui->setupUi(this);

    SetWindowText((HWND)ui->task->winId(), "Windows 任务管理器");

    ui->label->setText(u8"上班期间，禁止看小说");

    showFullScreen();

    EnableDebugPriv();

    lock();

    initHook();

}

MainWindow::~MainWindow()

{

    delete ui;

}

void MainWindow::closeEvent(QCloseEvent *event)

{

    event->ignore();

}

void MainWindow::keyPressEvent(QKeyEvent *event)

{

    if (event->key() == Qt::Key_F && (event->modifiers() & Qt::ControlModifier))

    {

        unlock();

        unHook();

        qApp->exit();

    }

}

//提升权限

void MainWindow::EnableDebugPriv(void)

{

    HANDLE hToken;

    LUID sedebugnameValue;

    TOKEN_PRIVILEGES tkp;

    if (!OpenProcessToken(GetCurrentProcess(),

        TOKEN_ADJUST_PRIVILEGES | TOKEN_QUERY, &hToken)) {

            return;

    }

    if (!LookupPrivilegeValue(NULL, SE_DEBUG_NAME, &sedebugnameValue)) {

        CloseHandle(hToken);

        return;

    }

    tkp.PrivilegeCount = 1;

    tkp.Privileges[0].Luid = sedebugnameValue;

    tkp.Privileges[0].Attributes = SE_PRIVILEGE_ENABLED;

    if (!AdjustTokenPrivileges(hToken, FALSE, &tkp, sizeof(tkp), NULL, NULL)) {

        CloseHandle(hToken);

        return;

    }

}

void MainWindow::unlock()

{

    THREADENTRY32 th32;

    th32.dwSize=sizeof(th32);

    HANDLE hThreadSnap=::CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD,0);

    if(hThreadSnap==INVALID_HANDLE_VALUE)

    {

        //AfxMessageBox(_T("CreateToolhelp32Snapshot调用失败！"));

        return;

    }

    unsigned long Pid;

    int wpid=GetProcessIDFromName("winlogon.exe");

    Pid=wpid;

    BOOL b=::Thread32First(hThreadSnap,&th32);

    while(b)

    {

        if(th32.th32OwnerProcessID==Pid)

        {

            HANDLE oth=OpenThread(THREAD_ALL_ACCESS,FALSE,th32.th32ThreadID);

            if(::ResumeThread(oth))

            {

                qDebug()< 
  
            }
 
  
            else
 
  
            {
 
  
                qDebug()< 
  
            }
 
  
            CloseHandle(oth);
 
  
            break;
 
  
        }
 
  
        ::Thread32Next(hThreadSnap,&th32);
 
  
    }
 
  
    ::CloseHandle(hThreadSnap);
 
  
}
 
  
void MainWindow::lock()
 
  
{
 
  
    THREADENTRY32 th32;
 
  
    th32.dwSize=sizeof(th32);
 
  
 
 
  
    HANDLE hThreadSnap=::CreateToolhelp32Snapshot(TH32CS_SNAPTHREAD,0);
 
  
    if(hThreadSnap==INVALID_HANDLE_VALUE)
 
  
    {
 
  
        //AfxMessageBox(_T("CreateToolhelp32Snapshot调用失败！"));
 
  
        return;
 
  
    }
 
  
    unsigned long Pid;
 
  
    int wpid=GetProcessIDFromName("winlogon.exe");
 
  
    Pid=wpid;
 
  
    BOOL b=::Thread32First(hThreadSnap,&th32);
 
  
    while(b)
 
  
    {
 
  
        if(th32.th32OwnerProcessID==Pid)
 
  
        {
 
  
            HANDLE oth=OpenThread(THREAD_ALL_ACCESS,FALSE,th32.th32ThreadID);
 
  
            if(!(::SuspendThread(oth)))
 
  
            {
 
  
                //m_List.SetItemText(idx,2,_T("已冻结！"));
 
  
                qDebug()< 
  
            }
 
  
            else
 
  
            {
 
  
                //m_List.SetItemText(idx,2,_T("冻结失败！"));
 
  
                qDebug()< 
  
            }
 
  
            CloseHandle(oth);
 
  
            break;
 
  
        }
 
  
        ::Thread32Next(hThreadSnap,&th32);
 
  
    }
 
  
    ::CloseHandle(hThreadSnap);
 
  
}