Re: [PyQt] How to trigger refresh of background window

[Vincent Vande Vyvre]

Le 02/12/10 00:32, Ian a écrit : Hi all, How can I cause a repaint event on a window that is not the current focus? When I click on the window it comes to the front, repaints itself and shows the (changed) data correctly. However in my use case, data shown in the background window, has been updated in another window, and I want to update the background window (without activating it or scribbling on the screen where I shouldn't).  Is this possible? I'm using PyQt on Windows 7. Thanks Ian _______________________________________________ PyQt mailing list    PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt Hi, Exemple : # -*- coding: utf-8 -*- import sys from PyQt4 import QtCore, QtGui class Main(object):     def __init__(self, MainWindow):         self.centralwidget = QtGui.QWidget(MainWindow)         self.colors =['black', 'blue', 'white', 'yellow', 'red']         self.pointer = 0         MainWindow.show()         self.create_dialog()     def change_background(self):         chain = "".join(["QWidget {background-color: ",                             self.colors[self.pointer], "}"])         self.centralwidget.setStyleSheet(chain)         self.pointer += 1         if self.pointer == 5:             self.pointer = 0     def create_dialog(self):         control = QtGui.QDialog()         dialog = Dialog(control, self)         control.exec_() class Dialog(object):     def __init__(self, Dialog, m):         Dialog.setWindowModality(QtCore.Qt.WindowModal)         self.main = m         self.centralwidget = QtGui.QWidget(Dialog)         self.grid = QtGui.QGridLayout(Dialog)         self.button = QtGui.QPushButton(Dialog)         self.button.setText("Change background")         self.grid.addWidget(self.button, 0, 0, 1, 1)         self.button.clicked.connect(self.change_color)     def change_color(self):         self.main.change_background() if __name__ == "__main__":     app = QtGui.QApplication(sys.argv)     MainWindow = QtGui.QMainWindow()     ui = Main(MainWindow)     MainWindow.show()     sys.exit(app.exec_()) You can also, when the color change, send some datas from Main to Dialog, i.e. one thumbnail that reflect the new appearance of main window. -- Vincent V.V. Oqapy

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