spanned table cell expansion

["Karl H. Beckers" <karl h beckers gmx net>]

Hi all,

I'm having this effect where my table cells aren't expanding as I expect 
them to. If somebody could shed some light here (perhaps provide a 
workaround) that would be most welcome.

I have reduced this to the max. Let's say we have this table with 3 
columns and 2 rows where in each row there is a widget spanning two 
columns, like this:

.....................................................................

| +------------------+ | +--------------------+-------------------+ |

| | checkbutton      | | | entry              |                   | |

| +------------------+ | +--------------------+-------------------+ |

| +--------------------+--------------------+ | +-----------------+ |

| | hscale             |                    | | | checkbutton     | |

| +--------------------+--------------------+ | +-----------------+ |

'`'''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

I've set both checkbuttons to not horizontally expand the surrounding 
container and the entry and hscale to do so. This (so I expected) should 
make the middle column take care of any extra space needed without the 
outer columns ever changing width.

However, this is not at all what's happening. It looks like the space 
added to e.g. the hscale is divided evenly between the spanned columns 
(rather than implementing a more complex algo for finding out if a given 
widget is perhaps the only expaning widget on a spanned column while 
other spanned columns may have other expanding widgets, or smth. the 
like), and thus also added to the first one.

Any ideas, pointers?

TIA,

Karl.