[PyQt] Defining a custom slot in Designer
henrik.pauli at gmail.com
Sat Jan 17 23:52:10 GMT 2009
On Saturday 17 January 2009, David Boddie wrote:
> On Sat Jan 17 17:19:44 GMT 2009, Henrik Pauli wrote:
> > I was messing around in Designer today and I wanted to add my QMainWindow
> > a new slot. The ui file has it, but the moment I try to loadUi it, I get
> > the following:
> > Traceback (most recent call last):
> > File "./testclient.py", line 11, in <module>
> > w = uic.loadUi("testclient.ui")
> > File "/usr/lib/python2.6/site-packages/PyQt4/uic/__init__.py", line 106,
> > in loadUi
> > return loader.DynamicUILoader().loadUi(uifile, baseinstance)
> > File
> > "/usr/lib/python2.6/site-packages/PyQt4/uic/Loader/qobjectcreator.py",
> > line 75, in getSlot
> > return getattr(object, slotname)
> > AttributeError: executeCommand
> > So how do I add this to my widget?
> How did you add the slot to the testclient.ui file?
right-click on MainWindow, Change Signals/Slots, add a Slot.
I'll read that URL in a little, thanks.
> I'm not aware of a mechanism that lets you add slots to .ui files loaded
> at run-time, unless you use uic.loadUiType() to create a widget class from
> which you can derive a new subclass . You would presumably be able to write
> the code for the new slots in the subclass.
Yeah, this is what I ended up doing instead -- this way though I don't see
that connection in Designer (not as if it were a problem, per se, I'm not
much of a Designer/Glade person anyway (much to the annoyance of my
> Maybe you can give some more information about what you're trying to do.
Hard. I'm not even sure yet what I'm doing :) Haven't coded in Python and Qt
in ages, but I needed something that had a CSS-capable HTML display embedded,
so I dug into it... As a quick idea so I have to mess as little with the GUI
itself as possible, I'll give out "commands" with a QLineEdit and see the
communication log in a QTextBrowser, and if there's some HTML to be
displayed, it goes into the WebKit thing. The command handler was the slot I
needed, and since I randomly found the Change Signals and Slots item in the
menu, I thought I'd give it a try :)
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