I\'m using qt widgets on embedded device and have problem with virtual keyboard. Keyboard is shown as fullscreen and overlaps all app.
In article Virtual keyboard top
You can use findChildren
with any class that inherits QObject
such as QApplication
. For example in main.cpp:
QApplication a(argc, argv);
QList<QQuickWindow *> wind = a.findChildren<QQuickWindow *>();
This will give you a list of pointers pointing to all the QQuickWindow
in your application.
To obtain all the windows you can use QGuiApplication::allWindows()
but that is not enough since the QtVirtualKeyboard window is not necessarily created at the beginning, so the visibleChanged signal of the QInputMethod must be used. I did not filter using the information from the QQuickWindow since in general the application could have others, instead it uses the name of the class to which the window belongs.
#include <QApplication>
#include <QWindow>
#include <cstring>
static void handleVisibleChanged(){
if (!QGuiApplication::inputMethod()->isVisible())
return;
for(QWindow * w: QGuiApplication::allWindows()){
if(std::strcmp(w->metaObject()->className(), "QtVirtualKeyboard::InputView") == 0){
if(QObject *keyboard = w->findChild<QObject *>("keyboard")){
QRect r = w->geometry();
r.moveTop(keyboard->property("y").toDouble());
w->setMask(r);
return;
}
}
}
}
int main(int argc, char *argv[])
{
qputenv("QT_IM_MODULE", QByteArray("qtvirtualkeyboard"));
QApplication a(argc, argv);
QObject::connect(QGuiApplication::inputMethod(), &QInputMethod::visibleChanged, &handleVisibleChanged);
// ...
Python version:
import os
import sys
from PySide2 import QtCore, QtGui, QtWidgets
# from PyQt5 import QtCore, QtGui, QtWidgets
def handleVisibleChanged():
if not QtGui.QGuiApplication.inputMethod().isVisible():
return
for w in QtGui.QGuiApplication.allWindows():
if w.metaObject().className() == "QtVirtualKeyboard::InputView":
keyboard = w.findChild(QtCore.QObject, "keyboard")
if keyboard is not None:
r = w.geometry()
r.moveTop(keyboard.property("y"))
w.setMask(r)
return
def main():
os.environ["QT_IM_MODULE"] = "qtvirtualkeyboard"
app = QtWidgets.QApplication(sys.argv)
QtGui.QGuiApplication.inputMethod().visibleChanged.connect(handleVisibleChanged)
w = QtWidgets.QLineEdit()
w.show()
sys.exit(app.exec_())
if __name__ == "__main__":
main()