[SOLVED] Cannot change cursor on QListWidget

sharky · 09-17-2014, 05:41 PM

While running Qprocess I want to display a WaitCursor over a QListWidget. I use the following code.

Code:

def StartProc(self):
  self.lstWidget.viewport().setCursor(QtCore.Qt.WaitCursor)
  self.lstWidget.setDisabled(True)
  self.runner.finished.connect(self.FinProc)
  self.runner.start(some_cmd)

def FinProc(self):
  self.lstWidget.setDisabled(False)
  self.lstWidget.viewport().setCursor(QtCore.Qt.ArrowCursor)

With the above code I see lstWidget get disabled while 'some_cmd' is running but I never see the cursor change. When 'some_cmd' is finished I see lstWidget re-enabled.

Commenting out the last line of the FinProc function causes the cursor to get switched to a WaitCursor after some_cmd is finished. That is completely unexpected and weird.

Identical code works perfectly on a QTextEdit. Not sure why it doesn't work with QListWidget but I am open to suggestions.

sharky · 09-17-2014, 06:02 PM

Found the solution. I need to update the widget.

Code:

def StartProc(self):
  self.lstWidget.viewport().setCursor(QtCore.Qt.WaitCursor)
  self.lstWidget.update()
  self.lstWidget.setDisabled(True)
  self.runner.finished.connect(self.FinProc)
  self.runner.start(some_cmd)

The update must occur before setDisabled.