QML application and screen flickering - qml

Question

I use windows 10 (updated), Python 3.5 and IDE PyCharm (full updated).
My problem: The screen has flickering when I click on the button.
The button was used to open File dialog window. Application window is showed from the python side via showFullscreen option (code is below).
How can I solve this problem.
MktLabelButton.qml
import QtQuick 2.7
Item {
id: mktLabelButton
x: 10
y: 10
width: 48
height: 48
signal buttonClicked()
property alias imageSource : mktLabelButtonIcon.source
property alias imageLabel : mktLabelButtonText.text
Image{
id: mktLabelButtonIcon
source: imageSource
sourceSize.height: mktLabelButton.height
sourceSize.width: mktLabelButton.width
scale: mktLabelButtonMouseArea.containsMouse ? 1.2 : 0.85
Behavior on scale {
ScaleAnimator {duration: 100}
}
}
Text{
id: mktLabelButtonText
font.bold: true
text: imageLabel
x: (mktLabelButton.width - contentWidth) / 2
y: mktLabelButton.height + 5
color: mktLabelButtonMouseArea.containsMouse ? "yellow":"white"
Behavior on color {
ColorAnimation {duration: 100}
}
}
MouseArea{
id: mktLabelButtonMouseArea
anchors.fill: mktLabelButtonIcon
cursorShape: Qt.PointingHandCursor
hoverEnabled: true
onClicked: buttonClicked()
}
}
MainForm.py
import sys
from PyQt5.QtQml import QQmlApplicationEngine
from PyQt5.QtGui import QGuiApplication
from PyQt5.QtCore import QUrl, QObject
from PyQt5.QtWidgets import QApplication
from PyQt5.QtQuick import QQuickView
class MainForm:
def __init__(self, parent):
self.__parent = parent
self.__openButton = parent.findChild(QObject, "openButton")
self.__openButton.buttonClicked.connect(self.openButtonClicked)
def openButtonClicked(self):
fd = self.__parent.findChild(QObject, "mktFileDialog")
fd.setProperty("show", "true")
def show(self):
pass
if __name__ == '__main__':
appQueue = QApplication([])
appEngine = QQmlApplicationEngine()
appEngine.load(QUrl("file:///E:/QML/01012017/Verison1/qml/mainform/mainform.qml"))
appWindow = appEngine.rootObjects()[0]
appWindow.showFullScreen()
mf = MainForm(appWindow)
sys.exit(appQueue.exec_())
MktFileDialog.qml
import QtQuick 2.0
import QtQuick.Dialogs 1.2
Item {
id: mktFileDialog
objectName: "mktFileDialogPY"
property alias show: mktFileDialogMain.visible
FileDialog{
id: mktFileDialogMain
title: "Comet görüntüleri"
visible: show
}
}
mainform.qml
import QtQuick 2.4
import QtQuick.Controls 1.3
import QtQuick.Window 2.2
import QtQuick.Dialogs 1.2
ApplicationWindow {
id: root
width: Screen.width
height: Screen.height
color: "black"
MktLabelButton{
objectName: "openButton"
x:50
y:50
imageSource: "img/open.png"
imageLabel: "Open"
}
MktFileDialog{
objectName: "mktFileDialog"
}
}