Progress bar is not smooth

dan1973

Try this in xml

import QtQuick 2.15
import QtQuick.Controls 2.15

ApplicationWindow {
    id: root
    visible: true
    minimumWidth: 840
    minimumHeight: 600

    property real prgVal1:100

    function updateProgress(){
            if(prgVal1>0){
                prgVal1 -= 0.1
            }
            else{
                prgVal1 = 100
            }
            progressBar1.value = prgVal1
            console.log("prgVal1 = ", prgVal1);
    }


    Timer{
        id:timProgress
        interval: 10
        running: true
        repeat: true
        onTriggered: {
            updateProgress()
        }
    }


    ProgressBar{
        id: progressBar1
        visible: true
        width: 600
        height: 60
        x: 20
        y: 50
        value: 100
        from: 0
        to: 100
    }

}

Witc

@dan1973 said in Progress bar is not smooth:

import QtQuick 2.15
import QtQuick.Controls 2.15

It Still "jumps"... In console the prgVal is correct: 100/99,9/99,8/99,7/99,6....

dan1973

@Witc said in Progress bar is not smooth:

It Still "jumps"...

what is the System configuration of yours: RAM, Processor and OS?

dan1973

I checked it is moving smoothly without breaks or jagging

Witc

@dan1973 said in Progress bar is not smooth:

@Witc said in Progress bar is not smooth:

It Still "jumps"...

what is the System configuration of yours: RAM, Processor and OS?

Now I tried the same app on my friends PC (Ubuntu)- and it works great.
On my Windows 10, Dell, intel i7, 16GB RAM it is jagging

dan1973

@Witc said in Progress bar is not smooth:

On my Windows 10, Dell, intel i7, 16GB RAM it is jagging

your config above is Good Enough. Normally Qt requires min 4GB and 16GB will be enough to run any graphics. when you say intel i7 what's the processor speed.

You should check if any background process keeps windows busy in providing priority to your app. normally windows OS guarantees for more than 20ms.

if its over please mark solved. or any questions you can ask?

Witc

@dan1973 said in Progress bar is not smooth:

if its over please mark solved. or any questions you can ask?

unfortunatelly I have no idea how to solve it on my Computer, @ndias has the same problem as me, so ther is probably some bug in some verision of Qt? Python?....

dan1973

@Witc said in Progress bar is not smooth:

probably some bug in some verision of Qt?

which Qt version r u using? and which compiler?

Witc

@dan1973 said in Progress bar is not smooth:

@Witc said in Progress bar is not smooth:

probably some bug in some verision of Qt?

which Qt version r u using? and which compiler?

QT 6.3.1:

jsulm

@Witc This does not answer the question which compiler you're using as you installed Qt for ARM64, MSVC2019, WebAssembly, Android and MinGW...

Witc

@jsulm said in Progress bar is not smooth:

@Witc This does not answer the question which compiler you're using as you installed Qt for ARM64, MSVC2019, WebAssembly, Android and MinGW...

I am using Qt along with python 3.10 + Pyside6. No any line of my code is written in C/C++ ...

Marko Stanke

Tried it on Qt 5.15, and it works perfectly