I'm creating a Qt Widgets application and deploying it on Windows 11 tablet.
Currently, when I click on a QLineEdit, the Windows 11 integrated virtual keyboard appears and I can edit the text. But, when it's a QSpinBox, the keyboard does not appear.
My app must be in full screen and does not allow access to the virtual keyboard shortcut in the taskbar:
I have tried :
QProxyStyle to the QSpinBox
Re-implementing some QEvent feature to force the call with
QEvent e(QEvent::RequestSoftwareInputPanel);bool event(QEvent *event) override { if (QEvent::InputMethodQuery == event->type()) { QEvent e(QEvent::RequestSoftwareInputPanel); return QApplication::sendEvent(qApp, &e); } return QSpinBox::event(event); }QInputMethod
setInputMethodHints(Qt::ImhDigitsOnly);Reading QLineEdit source code.
Here is my demo to implement this functionality:
Clicking on QLineEdit calls the virtual keyboard:
Clicking on QSpinbox calls nothing.
Qt version is 6.5.0.
All the sources:
touchscreen.pro
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++17
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp
HEADERS += \
custom.h \
mainwindow.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
custom.h
#ifndef CUSTOM_H
#define CUSTOM_H
#include <QSpinBox>
#include <QFocusEvent>
#include <QApplication>
class Custom : public QSpinBox
{
Q_OBJECT
public:
Custom(QWidget* parent = 0) :
QSpinBox(parent)
{
}
void focusInEvent(QFocusEvent *event) override
{
qDebug() << event;
QSpinBox::focusInEvent(event);
QGuiApplication::inputMethod()->show();
}
};
#endif // CUSTOM_H
mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
private:
Ui::MainWindow *ui;
};
#endif // MAINWINDOW_H
main.cpp
#include "mainwindow.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
w.show();
return a.exec();
}
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QProcess>
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
mainwindow.ui
<?xml version="1.0" encoding="UTF-8"?>
<ui version="4.0">
<class>MainWindow</class>
<widget class="QMainWindow" name="MainWindow">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>800</width>
<height>600</height>
</rect>
</property>
<property name="windowTitle">
<string>MainWindow</string>
</property>
<widget class="QWidget" name="centralwidget">
<layout class="QGridLayout" name="gridLayout">
<item row="1" column="1">
<widget class="QLineEdit" name="lineEdit_2">
<property name="readOnly">
<bool>true</bool>
</property>
</widget>
</item>
<item row="1" column="0">
<widget class="QLineEdit" name="lineEdit"/>
</item>
<item row="0" column="0">
<widget class="Custom" name="spinBox"/>
</item>
</layout>
</widget>
<widget class="QMenuBar" name="menubar">
<property name="geometry">
<rect>
<x>0</x>
<y>0</y>
<width>800</width>
<height>21</height>
</rect>
</property>
</widget>
<widget class="QStatusBar" name="statusbar"/>
</widget>
<customwidgets>
<customwidget>
<class>Custom</class>
<extends>QSpinBox</extends>
<header>custom.h</header>
</customwidget>
</customwidgets>
<resources/>
<connections/>
</ui>
