qml sequential

Abdulrahman

Hello All,
The following are two python classes called by qml file. I want to make the first class implement first when condition is True and after it finish the second class start. How to make this in qml (in another meaning running two statements sequentially)

eyllanesc

@Abdulrahman Your question is not clear so you must give more details in addition to providing a minimal and verifiable example

ODБOï

hi

@Abdulrahman said in qml sequential:

and after it finish the second class start

Add a signal to your first class and call it within the method
Connect that signal to second class method
https://wiki.qt.io/Qt_for_Python_Signals_and_Slots

Abdulrahman

@LeLev the first class inside if condition so it will not be called all the time but the second class will be. So adding signal will help when first class be called but when it is not, it will not.

Abdulrahman

@eyllanesc In qml how to prevent red rectangle from showing except after Ok button inside the dialog clicked and if the dialog didn't open(due to not achieving the condition) the red rectangle shows(making block of the code goes sequential instead of parallel)

Code for main Window:

import QtQuick 2.13
import QtQuick.Window 2.13
import QtQuick.Controls 2.0

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")
    SaveDialog{id: save}
    onXChanged: {
        save.open()
    }
    Rectangle{
        width: 200
        height: 200
        color: 'red'
        Text {
            text: qsTr("Two")
        }
    }
}

Code for The Dialog:

import QtQuick 2.12
import QtQuick.Layouts 1.12
import QtQuick.Dialogs 1.2
import QtQuick.Controls 2.0

Dialog{
    id: dialog
    width: 200
    height: 100
    title: "One"
}

eyllanesc

@Abdulrahman Use the accepted signal:

import QtQuick 2.13
import QtQuick.Controls 2.0
import QtQuick.Window 2.13

Window {
    width: 640
    height: 480
    visible: true
    title: qsTr("Hello World")
    onXChanged: function() {
        save.open();
    }

    SaveDialog {
        id: save

        onAccepted: function() {
            rect.visible = true;
        }
    }

    Rectangle {
        id: rect

        width: 200
        height: 200
        color: 'red'
        visible: false

        Text {
            text: qsTr("Two")
        }

    }

}