[Pythoncard-users] GTK/Linux fixes

Cliff Wells and I worked through some more Linux/GTK issues today. I updated
findfiles.py, resourceEditor.py, and samples.py launcher code to put
launched scripts in the background:

os.system(python + ' ' + filename + args + ' &')

instead of

os.system(python + ' ' + filename + args)

Cliff has suggested wrapping up the launching functionality to hide platform
differences and this is probably a good candidate for the utils.py module
since we already have four samples that do some launching; Simon is updating
textRouter and will check that in later. Anyway, the change above should
mean that the launching script no longer stops updating while it waits for
the launched script to terminate. *nix folks are welcome to suggest better
solutions.

I updated the imagebutton.py component module to take care of a difference
between how Windows and GTK update the bitmap of a wxBitmapButton, which is
what ImageButton uses as a delegate.

    def _setBitmap( self, aValue ) :
        self._bitmap = aValue
        bmp = aValue.getBits()
        self._delegate.SetBitmapLabel(bmp)
        if wx.wxPlatform != "__WXMSW__":
            self._delegate.SetBitmapDisabled(bmp)
            self._delegate.SetBitmapFocus(bmp)
            self._delegate.SetBitmapSelected(bmp)
        self._delegate.Refresh()

I've posted a note on wx-dev asking whether I found a bug or this behavior
is expected. Note that when we move the components to an IS-A class
structure instead of the current HAS-A structure where the wxPython controls
are delegates of the PythonCard component classes, the wxPython methods
above will be exposed so that you can set the separate bitmaps if you want.

I just don't want to add methods for that functionality right now since it
is a waste of time. It is the same reason I haven't added a combobox, tree
control or some of the other wxPython controls. I expect to switch to direct
IS-A subclasses Real Soon Now.

I changed the worldclock sample to use an Image instead of an ImageButton. I
left the tictactoe sample using ImageButtons. That way we have tests that
switch bitmaps after initialization with both component types.

ka