On 16 Apr, 20:17, "Diez B. Roggisch" <de...@nospam.web.de> wrote:
> l.fres...@gmail.com schrieb:
>
>
>
> > I'm developing a PyQt4 application.
>
> > I have created a button:
> > ...
> > self.start_button=QtGui.QPushButton("start simulation", self)
> > ...
>
> > that is connected to a function:
> > ...
> > self.connect(self.start_button, QtCore.SIGNAL('clicked()'),
> > self.simulate)
> > ...
>
> > This is the function:
> > ...
> > def simulate(self):
>
> > self.log_inspector.setText('')
> > cmds=['rm engine','make engine', './
> > engine']
> > first_cmd="./parser "+str(self.filename)
> > cmds.insert(0, first_cmd)
> > for cmd in cmds:
> > self.status_inspector.setText(cmd)
> > status, output = commands.getstatusoutput(cmd)
> > output_list=output.split("\n")
> > output_list.reverse()
> > output_def="\n".join(output_list)
> > if status != 0:
> > self.log_inspector.setText(cmd"...
> > [ERROR]\n"+output_def)
> > return
> > self.status_inspector.setText("Done!")
> > ...
>
> > I would like to change the value of status_inspector (It's a QLabel)
> > during the execution of the function.
> > Is it possible?
>
> If you want GUI-updates while performing time-consuming tasks, you need
> to make sure Qt's event-loop get's called every now and then. This
> should help you:
>
> void QCoreApplication::processEvents ( QEventLoop::ProcessEventsFlags
> flags = QEventLoop::AllEvents ) [static]
>
> Diez
It works! I added:
application_object.processEvents()
Thank you Diez!
def simulate(self):
self.log_inspector.setText('')
cmds=['rm engine','make engine', './
engine']
first_cmd="./parser "+str(self.filename)
cmds.insert(0, first_cmd)
for cmd in cmds:
self.status_inspector.setText(cmd)
application_object.processEvents()
status, output = commands.getstatusoutput(cmd)
output_list=output.split("\n")
output_list.reverse()
output_def="\n".join(output_list)
if status != 0:
self.log_inspector.setText(cmd"...
[ERROR]\n"+output_def)
return
self.status_inspector.setText("Done!")
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