Question about using UI/xml files from Qt designer in Pyside

Blackbear

Using Pyside I am able to load and run ui files created in qt designer. I forget the source so forgive me for not giving credit but I use this class to facilitate loading the ui file.

The reason I am trying to do this with ui files is because I have a lot of complex forms to create with a lot of trial and error and it has been very easy to modify in designer and just save.

@from PySide.QtUiTools import QUiLoader
class UiLoader(QUiLoader):

def __init__(self, baseinstance):
    QUiLoader.__init__(self, baseinstance)
    self.baseinstance = baseinstance

def createWidget(self, class_name, parent=None, name=''):
    if parent is None and self.baseinstance:
        # supposed to create the top-level widget, return the base instance instead
        return self.baseinstance
    else:
        # create a new widget for child widgets
        widget = QUiLoader.createWidget(self, class_name, parent, name)
        if self.baseinstance:
            # set an attribute for the new child widget on the base
            # instance, just like PyQt4.uic.loadUi does.
            setattr(self.baseinstance, name, widget)
        return widget@

That is saved to a file called UiLoader.py and is brought in with 'from UiLoader import *.

Then I have a function in my script to setup a loader.

@def loadUi(uifile, baseinstance=None):
loader = UiLoader(baseinstance)
widget = loader.load(uifile)
QMetaObject.connectSlotsByName(widget)
return widget@

The basic script looks like this.

@#!/usr/bin/env python

import os
import sys
from PySide.QtCore import *
from PySide.QtGui import *
from UiLoader import *

def loadUi(uifile, baseinstance=None):
loader = UiLoader(baseinstance)
widget = loader.load(uifile)
QMetaObject.connectSlotsByName(widget)
return widget

class MainWindow(QMainWindow):

def __init__(self, parent=None):
    QMainWindow.__init__(self, parent)
    loadUi(ResDir + '/mainwindow.ui', self)

def main():
global ResDir
ResDir = os.path.dirname(os.path.realpath(file)) + "/resources"
app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec_()

if name == 'main':
main()@

The problem I am having is loading additional forms. I need to be able to bring up other forms through events in the main window. This is what I tried.

@#!/usr/bin/env python

import os
import sys
from PySide.QtCore import *
from PySide.QtGui import *
from UiLoader import *

def loadUi(uifile, baseinstance=None):
loader = UiLoader(baseinstance)
widget = loader.load(uifile)
QMetaObject.connectSlotsByName(widget)
return widget

class MainWindow(QMainWindow):

def __init__(self, parent=None):
    QMainWindow.__init__(self, parent)
    loadUi(ResDir + '/mainwindow.ui', self)
    self.pshRunOptions.clicked.connect(self.runOptions)

def runOptions(self):
    loadUi(ResDir + '/runoptions.ui', self)
    window = runoptions()
    window.show()

class runoptions(QWidget):

def __init__(self, parent=None):
    QWidget.__init__(self, parent)
    loadUi('resources/runoptions.ui', self)

def main():
global ResDir
ResDir = os.path.dirname(os.path.realpath(file)) + "/resources"
app = QApplication(sys.argv)
window = MainWindow()
window.show()
app.exec_()

if name == 'main':
main()@

It sort of works but I get warnings returned and it changes the main window.

Here are the warnings.

bq. Designer: Attempt to add a layout to a widget 'Dialog' (MainWindow) which already has a layout of non-box type QMainWindowLayout.
This indicates an inconsistency in the ui-file.
Object::connect: No such slot runoptions::accept()
Object::connect: (sender name: 'buttonBox')
Object::connect: (receiver name: 'Dialog')
Object::connect: No such slot runoptions::reject()
Object::connect: (sender name: 'buttonBox')
Object::connect: (receiver name: 'Dialog')

Frankly, this is new territory for me and I have no idea what I'm doing. There may be a better approach entirely. If someone knows an easy fix to my code it would be much appreciated.

Cheers,

Blackbear

I think I solved this. I was calling loadUi in the function call. That was not needed because the call to loadUi was already defined in the runoptions class.

Silly me.

I am still getting this error;

bq. Object::connect: No such slot runoptions::accept()
Object::connect: (sender name: ‘buttonBox’)
Object::connect: (receiver name: ‘Dialog’)
Object::connect: No such slot runoptions::reject()
Object::connect: (sender name: ‘buttonBox’)
Object::connect: (receiver name: ‘Dialog’)

The 'runoptions' form contains an OK and Cancel button which do not work. Not sure how to fix that but at least I am making some progress.

I am not getting the "Designer" error anymore.
Cheers,