python - PyQt5 Weird window position issue -

the codes above, weirdly have issue. don't understand why if set y size of window more 923, window not placed @ middle of screen. goes top-left corner of screen.

from pyqt5.qtwidgets import qapplication,qdesktopwidget,qmainwindow pyqt5 import qtcore  import sys  class cssden(qmainwindow):     def __init__(self):         super().__init__()           self.mwidget = qmainwindow(self)         self.setwindowflags(qtcore.qt.framelesswindowhint)           #size         self.setfixedsize(1100,923) # <--- set 924 , more         self.center # <-- function set window middle of screen         self.show()      def center(self): # <-- center function         qr = self.framegeometry()         cp = qdesktopwidget().availablegeometry().center()         qr.movecenter(cp)         self.move(qr.topleft())  app = qapplication(sys.argv) app.setstylesheet("qmainwindow{background-color: rgb(30,30,30);border: 1px solid black}")  ex = cssden() sys.exit(app.exec_()) 

why? resolution of screen 1920x1080? don't understand why number 923 , how fix this.

edit: turns out pyqt center window automatically, after 923 why it's going left-top corner of screen? there default numbers each resolutions?

try solution answer: pyqt4 center window on active screen

def center(self):     framegm = self.framegeometry()     screen = qtgui.qapplication.desktop().screennumber(qtgui.qapplication.desktop().cursor().pos())     centerpoint = qtgui.qapplication.desktop().screengeometry(screen).center()     framegm.movecenter(centerpoint)     self.move(framegm.topleft()) 

this function based on mouse point located. uses screennumber function determine screen mouse current active on. finds screengeometry of monitor , center point of screen. using method, should able place window in center of screen if monitor resolutions different.