Does QEvent work on Windows 10 x64 with touchpad

Sergey Vasilenko

Hello everyone ,

I’m writing windows application which allow user to change a size and position of the specific area by using notebook touchpad. For this purpose I used QEvent Class. But this can identify only a scroll gesture (QEvent::Type::Wheel), as to other gestures - there is no reaction. I created a simple app by using examples but got the same result

What am I doing wrong?

Here is a code of my simple app

#include "mainwindow.h"
#include <QApplication>


MainWindow::MainWindow(QWidget *parent) :
    QMainWindow(parent)
{
    if(QCoreApplication::testAttribute(Qt::AA_DontCreateNativeWidgetSiblings)==false)
        setAttribute(Qt::WA_NativeWindow);
    setAttribute(Qt::WA_AcceptTouchEvents, true);

    setMinimumSize(640, 480);
    m_label = new QLabel("No Events Before", this);
    m_label->setFont(QFont("Arial", 24));
    m_label->setAlignment(Qt::AlignCenter);
    m_label->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
    setCentralWidget(m_label);
    installEventFilter(this);
}

bool MainWindow::eventFilter(QObject *, QEvent *event)
{
    QString msg;
    switch (event->type())
    {
    case QEvent::TouchBegin:
        msg = "TouchBegin";
        break;
    case QEvent::TouchUpdate:
        msg = "TouchUpdate";
        break;
    case QEvent::TouchEnd:
        msg = "TouchEnd";
        break;
    case QEvent::Gesture:
        msg = "Gesture";
        break;
    case QEvent::Type::Wheel:
        msg = "Wheel";
        break;
    case QEvent::Type::GestureOverride:
        msg = "GestureOverride";
        break;
    }
    if (!msg.isEmpty())
        m_label->setText(msg + "Event");
    return false;
}

project structure

Qt5Core.dll
Qt5Gui.dll
Qt5Widgets.dll
app.exe
platforms/qwindows.dll

Environment:
Qt 5.6.2 64bit
Windows7 and10 64bit
compiler VC2015 CE 64bit

Touchpad drivers are installed and native windows applications responds to gestures