PyQt4-工具栏中重复了Python图像

Question

I am currently working on a small application to do with arranging music lessons and am trying to add a background image. When I add an image it also repeats the image in the menu bar and toolbar. How can I stop this from happening?

Thanks in advance!

    import sys
from PyQt4 import QtGui

class windowMain(QtGui.QMainWindow):

    def __init__(self):
        super(windowMain, self).__init__()

        self.initUI()

    def initUI(self):

#Layout of window
        self.resize(700, 500) #Maximizing main window
        self.center()
        self.setWindowTitle('Lesson Planner') #Setting window title
        self.setStyleSheet("border-image: url(p.jpg);")       
        self.show() #Showing the window

Answer 1

If you don't specify which widget(s) the stylesheet applies to, it will cascade to all child widgets (ie just like CSS). So, as with CSS, you need to use the right selector syntax to apply the background image to the appropriate widget.

For you example, one way to do that would be to set the objectName for the central widget of the main window, and then use that name in the selector:

    def initUI(self):
        self.centralWidget().setObjectName('CentralWidget')
        self.setStyleSheet("""
            #CentralWidget { background-image: url(./image.png) }
            """)