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  1. Qt
  2. QTBUG-105560

mapToGlobal, wrong values with Linux

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Details

    • Bug
    • Resolution: Cannot Reproduce
    • P2: Important
    • None
    • 6.3.1
    • Widgets: Main Window
    • None
    • Ubuntu 22.04.1 LTS
    • Linux/Wayland

    Description

      Trying to map the global point for the MainWindow, the values are good on Windows and macOS but are bad on Linux

      Example code:
       

      #include "mainwindow.h"
      #include "ui_mainwindow.h"
      
      MainWindow::MainWindow(QWidget *parent)  : QMainWindow(parent)  
            , ui(new Ui::MainWindow) 
      {
          ui->setupUi(this);
      }
      
      MainWindow::~MainWindow() {
          delete ui;
      }
      
      void MainWindow::on_testPushButton_clicked() {
          qDebug() << "MainWindow mapToGlobal" << this->mapToGlobal(QPoint(0,0));
      }
      

      and I get this when the window is moved around on a 2048x1280 display

      MainWindow mapToGlobal QPoint(12,120)
      MainWindow mapToGlobal QPoint(180,1800)
      MainWindow mapToGlobal QPoint(552,5520)
      MainWindow mapToGlobal QPoint(654,6540)
      MainWindow mapToGlobal QPoint(831,8310)
      MainWindow mapToGlobal QPoint(900,9000)
      MainWindow mapToGlobal QPoint(1002,10020)
      

      Attachments

        1. sysinfo.png
          13 kB
          Alan Krzywicki
        2. test_project.zip
          2.75 MB
          Alan Krzywicki

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          People

            inho Inho Lee
            gmat Alan Krzywicki
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            Dates

              Created:
              Updated:
              Resolved: