How to intercept keyboard in QT?

• 0
  Let's imagine that I have a picture, I want to move it by pressing a key on the keyboard. Perhaps I need to use slots, but how to let the computer know that this or that key is pressed: D

  C++ Juliette Santos, Jul 11, 2019

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3 Answers
• 0
  stackoverflow.com/questions/12558988/qt-keypress-event

  Lucas Esparza

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• 0
  All graphical Qt classes in the protected area have different -event methods.
  
  by default event is forwarded to the child class. You need to override the appropriate method. For everything else here: doc.qt.io/qt-5/eventsandfilters .html

  Aurora Crawford

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• 0
  We add the keyPressEvent method to our class, and we ourselves call the corresponding methods / slots that will move the image:
  

  void MainWindow::keyPressEvent(QKeyEvent *e)
  
  {
  
      switch (e->key()) {
  
      case Qt::Key_Up:
  
          _image->up();
  
          break;
  
      case Qt::Key_Down:
  
          _image->down();
  
          break;
  
      case Qt::Key_Left:
  
          _image->left();
  
          break;
  
      case Qt::Key_Right:
  
          _image->right();
  
          break;
  
      }
  
  }

  Dominick Moreno

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