title: qt build 3 buttons animation QParallelAnimation header
body: <p>I have a simple project with 3 pushbuttons.</p>
  <p>System: Ubuntu22LTS qemu vm where i run the development environment 16G ram
  6 cores</p>
  <p>i run the code with:Based on Qt 6.2.3 (GCC 10.3.1 20210422 (Red Hat 10.3.1-1), 64 bit)</p>
  <p>Built on May 23 2022 01:17:57</p>
  <p>From revision ac1e86fe74</p>
  <p>host machine: ubuntu 18 lts 64gb ram 12 cores:</p>
  <p>this is how the mainwindow.cpp looks like:</p>
  <pre><code>#include &quot;mainwindow.h&quot;
  #include &quot;ui_mainwindow.h&quot;
  
  MainWindow::MainWindow(QWidget *parent)
      : QMainWindow(parent), ui(new Ui::MainWindow)
  {
      ui-&gt;setupUi(this);
  
      animation1 = new QPropertyAnimation(ui-&gt;pushButton, &quot;geometry&quot;);
      animation1-&gt;setDuration(3000);
      animation1-&gt;setStartValue(ui-&gt;pushButton-&gt;geometry());
      animation1-&gt;setEndValue(QRect(50,200,100,50));
      animation1-&gt;start();
  
      animation2 = new QPropertyAnimation(ui-&gt;pushButton_2, &quot;geometry&quot;);
      animation2-&gt;setDuration(3000);
      animation2-&gt;setStartValue(ui-&gt;pushButton_2-&gt;geometry());
      animation2-&gt;setEndValue(QRect(50,200,100,50));
      animation2-&gt;start();
  
      animation3 = new QPropertyAnimation(ui-&gt;pushButton_3, &quot;geometry&quot;);
      animation3-&gt;setDuration(3000);
      animation3-&gt;setStartValue(ui-&gt;pushButton_3-&gt;geometry());
      animation3-&gt;setEndValue(QRect(50,200,100,50));
      animation3-&gt;start();
  
      //create Parallel Animation Croup
  }
  
  MainWindow::~MainWindow()
  {
      delete ui;
  }
  </code></pre>
  <p>this is how the header mainwidow.h looks like:</p>
  <pre><code>#ifndef MAINWINDOW_H
  #define MAINWINDOW_H
  
  #include &lt;QMainWindow&gt;
  #include &lt;QPropertyAnimation&gt;
  //#include &lt;QParallelAnimationGroup&gt;
  QT_BEGIN_NAMESPACE
  namespace Ui { class MainWindow; }
  QT_END_NAMESPACE
  
  class MainWindow : public QMainWindow
  {
      Q_OBJECT
  
  public:
      MainWindow(QWidget *parent = nullptr);
      ~MainWindow();
  
  private:
      Ui::MainWindow *ui;
      QPropertyAnimation *animation1;
      QPropertyAnimation *animation2;
      QPropertyAnimation *animation3;
  
      //QParallelAnimationGroup *animationGroup;
  };
  #endif // MAINWINDOW_H
  </code></pre>
  <p>as soon as i uncomment the line 6 in the header ill get 24498 issues with stray'/*** in program errors:
  what am i doing wrong?</p>
  <pre><code>/home/../project16/build-QParallelAnimationGroup-Desktop_Qt_6_2_4_GCC_64bit-Debug/QParallelAnimationGroup:1: error: stray ‘\177’ in program
  In file included from ../QParallelAnimationGroup/mainwindow.h:6,
                   from ../QParallelAnimationGroup/mainwindow.cpp:1:
  ./QParallelAnimationGroup:1:1: error: stray ‘\177’ in program
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        | ^
  </code></pre>