PyQt app in seperate thread
phil at riverbankcomputing.co.uk
Wed Nov 22 14:14:02 CET 2006
On Wednesday 22 November 2006 12:37 pm, anders wrote:
> I am writing a plugin for a piece of software in python, and I want to
> start up a PyQt GUI in the plugin, without stalling the main thread
> while the gui is running (later i will want to pass messages between
> the main thread and the gui thread).
> I'm new to pyqt, so I'm probably doing something very silly, but for
> the moment I'm just trying to get the first pyqt tutorial example
> running in a seperate thread:
> import sys
> from PyQt4 import QtGui
> from PyQt4 import QtCore
> class MyThread( QtCore.QThread ):
> def __init__( self ):
> QtCore.QThread.__init__( self )
> def run( self ):
> app = QtGui.QApplication( sys.argv )
> hello = QtGui.QPushButton( 'Hello world!' )
> hello.resize( 500, 500 )
> QtCore.QThread.terminate( )
> mt = MyThread()
> print 'Main thread continuing...'
> print 'GUI thread finished.'
> The app starts up (with a warning WARNING: QApplication was not created
> in the main() thread. ). I get a window, but no button, and clicking on
> the close button does nothing and I have to force the program to quit.
> There's got to be a way to get this working, right? Can anyone help me
> along the right path?
In particular the bit that says that exec_() must be called from the main
thread and not from a QThread.
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