Hi all,
How does one connect dialogs to a parent object to receive any signals
they may emit?
This doesn't work:
dialog = Foo()
self.connect(dialog, QtCore.SIGNAL("foo(string)"),
self.printString)
The attached code sample creates a dialog that emits a signal on
init(). The main window tries to connect the dialog, receive the
signal, and call its assigned slot. Seems like it should work, but of
course it doesn't.
I'm sure I'm overlooking something simple. Thanks in advance!
Scott
#!/usr/bin/env python
import sys
from PyQt4 import QtCore, QtGui
class Foo(QtGui.QDialog):
def __init__(self, parent=None):
QtGui.QDialog.__init__(self)
self.okButton = QtGui.QPushButton(self.tr("OK"))
self.okButton.setDefault(True)
self.closeButton = QtGui.QPushButton(self.tr("Close"))
self.formLayout = QtGui.QVBoxLayout()
self.formLayout.addWidget(self.okButton)
self.formLayout.addWidget(self.closeButton)
self.setLayout(self.formLayout)
self.connect(self.okButton, QtCore.SIGNAL("clicked()"), self, QtCore.SLOT("accept()"))
self.connect(self.closeButton, QtCore.SIGNAL("clicked()"), self, QtCore.SLOT("close()"))
self.emitSignal()
def emitSignal(self):
print "emitSignal()..."
self.emit(QtCore.SIGNAL("foo(string)"), "signal: this is foo")
class MainWindow(QtGui.QMainWindow):
def __init__(self):
QtGui.QMainWindow.__init__(self)
self.displayDialog()
def displayDialog(self):
dialog = Foo()
self.connect(dialog, QtCore.SIGNAL("foo(string)"), self.printString)
if dialog.exec_():
print "dialog executed"
def printString(self, theString):
print "theString: ", theString
if __name__ == "__main__":
app = QtGui.QApplication(sys.argv)
mainwindow = MainWindow()
mainwindow.show()
sys.exit(app.exec_())
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