Dragable pyqt frameless app

arkero24

Morning.

I have built an app with Qdesigner, with pyuic I created python code and made the app frameless. I added a qframe as a title bar which contains two qlabels, for icon and app info, and I added two qtoolbuttons for minimizing and close app. I need this bar title let me to move the app.

How's that Possible?

thank you very much

jsulm

@arkero24 Take a look at https://doc.qt.io/qt-5/qwidget.html#mouseMoveEvent
You will need to store last mouse cursor position, then next time mouseMoveEvent is called you calculate mouse cursor position difference (current - last) and apply this difference to move your window.

NonNT

@arkero24
Check this out: https://www.learnpyqt.com/apps/build-desktop-notes-application/
Maybe that's what you're looking for.

wrosecrans

Here's a draggable frameless widget that might be a useful starting point for you. It uses mouseMoveEvent() to move itself when dragged.

class Marker(W.QWidget):
  def __init__(self, parent = None):
      W.QWidget.__init__(self, parent)
      self.setWindowFlags(QtCore.Qt.Widget | QtCore.Qt.FramelessWindowHint);
      self.setAttribute(QtCore.Qt.WA_NoSystemBackground, True);
      self.setAttribute(QtCore.Qt.WA_TranslucentBackground, True);
      self.clicked = False
  def paintEvent(self, ev):
      p = Gui.QPainter(self)
      p.fillRect(self.rect(), Gui.QColor(128, 128, 128, 128))
      
  def mousePressEvent(self, ev):
      self.old_pos = ev.screenPos()

  def mouseMoveEvent(self, ev):
      if self.clicked:
        dx = self.old_pos.x() - ev.screenPos().x()
        dy = self.old_pos.y() - ev.screenPos().y()
        self.move(self.pos().x() - dx, self.pos().y() - dy)
      self.old_pos = ev.screenPos()
      self.clicked = True
      return W.QWidget.mouseMoveEvent(self, ev)