Mouse program with windows hook

Jeronimo

Hi i am searching info because i'm improving one mouseevent program. At the momen't could unistall with:
UnhookWindowsHookEx(hHook);

But if i want that the event's work again, how i can install again? So the problem is when i use this:

MouseLogger::instance().parada();

And i connect again, the mouse program doesnt work more,like:

QObject::connect(&MouseLogger::instance(), &MouseLogger::mouseEvent,
                     [](){

    });

Program:

#include "mouselogger.h"
#include <QDebug>

MouseLogger &MouseLogger::instance()
{
    static MouseLogger _instance;
    return _instance;
}

MouseLogger::MouseLogger(QObject *parent) : QObject(parent)
{
    HINSTANCE hInstance = GetModuleHandle(NULL);
     //Set hook
    mouseHook = SetWindowsHookEx(WH_MOUSE_LL, mouseProc, hInstance, 0);
    // Check hook is correctly
    if (mouseHook == NULL) {
        qWarning() << "Mouse Hook failed";
    }
}

void MouseLogger::parada(){
    UnhookWindowsHookEx(mouseHook);
}

LRESULT CALLBACK MouseLogger::mouseProc(int Code, WPARAM wParam, LPARAM lParam)
{
    Q_UNUSED(Code)

    // Having an event hook, we nned to cast argument lParam
    // to the structure of the mouse is the hook.
    MOUSEHOOKSTRUCT * pMouseStruct = (MOUSEHOOKSTRUCT *)lParam;

    // Next, we check to see what kind of event occurred,
    // if the structure is not a pointer to nullptr
    if(pMouseStruct != nullptr) {
        switch (wParam) {
        case WM_MOUSEMOVE:
            qDebug() << "WM_MOUSEMOVE";
            break;
        case WM_LBUTTONDOWN:
            qDebug() << "WM_LBUTTONDOWN";
            break;
        case WM_LBUTTONUP:
            qDebug() << "WM_LBUTTONUP";
            break;
        case WM_RBUTTONDOWN:
            qDebug() << "WM_RBUTTONDOWN";
            break;
        case WM_RBUTTONUP:
            qDebug() << "WM_RBUTTONUP";
            break;
        case WM_MBUTTONDOWN:
            qDebug() << "WM_MBUTTONDOWN";
            break;
        case WM_MBUTTONUP:
            qDebug() << "WM_MBUTTONUP";
            break;
        case WM_MOUSEWHEEL:
            qDebug() << "WM_MOUSEWHEEL";
            break;
        default:
            break;
         emit instance().mouseEvent();
        }


    }

    // After that you need to return back to the chain hook event handlers
    return CallNextHookEx(NULL, Code, wParam, lParam);
}