transparent windows howto

Oğuz Yarımtepe — Fri, 11 Jul 2008 10:21:45 +0000

I have been dealing with the qt programming using Python. Till now i mainl created simple GUI working as a on screen display or making simple jobs. I was trying to creade an on screen display. I needed to create transparent window application. After searching and trying here is a simple python code that uses qt4 library that creates a window which includes a transparent png image inside.

import sys from PyQt4 import QtGui, Qt, QtCore


class Transparent(QtGui.QWidget):
	def __init__(self):

		QtGui.QWidget.__init__(self)

		self.setAttribute(Qt.Qt.WA_NoSystemBackground)

		self.setAutoFillBackground(True)
		pixmap = QtGui.QPixmap("test.png")

		width = pixmap.width()

		height = pixmap.height()
		self.setWindowTitle("Status")

    		self.resize(width, height)
    		self.label = QtGui.QLabel(self)

		self.label.setPixmap(QtGui.QPixmap("test.png"))
    		self.setMask(pixmap.mask())
    	def paintEvent(self,event):

		self.setAttribute(Qt.Qt.WA_NoSystemBackground)

if __name__ == "__main__": app = QtGui.QApplication(sys.argv) x = Transparent() x.show() app.exec_()

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transparent windows howto