qml error

[jchaviano]

why in qml when working with combobox it gives me this error. It's not that the app is bad but if you are a customer user this scares you...

[jchaviano]

@jchaviano

this is a simple code for ilustrate the problem...

You need to click several times on the combobox to see the blinking error of the components when redering and in some cases the rainbow of colors in the previous image

import QtQuick 2.12
import QtQuick.Window 2.12
import QtQuick.Controls 2.12

Window {
    visible: true
    width: 1024
    height: 600
    title: qsTr("error qml")
    minimumHeight : 800
    minimumWidth : 1024

    Rectangle {
        color: "#CCCCCC"
        anchors.fill: parent
        Rectangle {
            id: header
            color: "red"
            implicitWidth: parent.width
            height: 60
            Rectangle {
                id: contenedorbuttons
                color: "#E6E6E6"
                implicitWidth: parent.width * 0.95
                implicitHeight: parent.height * 0.9
                anchors.centerIn: parent
            }
        }
        Rectangle {
            id: arejob
            color: "#CCCCCC"
            implicitWidth: parent.width
            anchors.top: header.bottom
            anchors.bottom: futter.top
            Row {
                anchors.centerIn: parent
                spacing: 1
                Rectangle{
                    implicitWidth: contenedorbuttons.width-40
                    height: 38
                    border.color: "blue"
                    Row{
                        anchors.centerIn: parent
                        anchors.fill: parent
                        Rectangle{
                            implicitWidth: parent.width/2
                            height: 40
                            color: "green"
                            border.color: "black"
                            ComboBox{
                                implicitWidth: parent.width;
                                model: ["First", "Second", "Third"]
                            }
                        }
                        Rectangle{
                            implicitWidth: parent.width/2
                            height: 40
                            ComboBox{
                                id: idcomboboxadb
                                implicitWidth: parent.width;
                                model: ["First", "Second", "Third"]
                                //  valueRole: "portName"

                            }
                        }
                    }
                }
            }

        }
        Rectangle {
            id: futter
            color: "blue"
            implicitWidth: parent.width
            height: 30
            anchors.bottom: parent.bottom

        }
    }
}

[SGaist]

Hi,

Can you show what your application should look like ?
I have tried it a bit using qmlscene and it does not seem to do much in terms of flicking (6.5.0 on macOS)

[jchaviano]

@jchaviano
This is the image of the previous code

This is the image of the previous code with the bug

Only by moving the mouse over an area or clicking on some component does the app repaint. but the colors of the components should not be lost

[SGaist]

Which version of Qt are you using ?

[jchaviano]

@SGaist

[SGaist]

These are the information about Qt Creator. I am requesting the information about the Qt version you use to build your application.

[jchaviano]

@SGaist
That is very important for me... and for other future users

[SGaist]

@jchaviano said in qml error:

@SGaist
That is very important for me... and for other future users

In what way is that related to the fact that you did not answer my question ?

[jchaviano]

@SGaist
this is you needed

[SGaist]

@jchaviano no again, this is Qt Creator's information. Which Qt version are you using to build your application ? Go to the project panel to see that information.

Based on the Qt Creator version I would guess that it's likely an old version of Qt so the first thing you should do is update to a more recent version.

[jchaviano]

@SGaist

[SGaist]

@jchaviano as suggested, you should start by updating Qt to a more recent version.

[jchaviano]

@SGaist
ok

[jchaviano]

@SGaist I have some way by code that when clicked repaints the components. as a refresher if in the end the bug doesn't always appear and when I move the mouse over another component the paint is updated correctly. My question, I cannot force qml to repaint itself when clicking on the combobox