On Fri, 1 Dec 2000, Alexander Caldwell wrote:
> Mark Swarbrick wrote:
> >
> > Can someone tell me how to change the tab order of entry boxes? When I
> > hit the tab key the focus doesn't change to the next box that I want it
> > too. How can I change this?
> >
> > [EMAIL PROTECTED]
> >
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>
> I believe in general, the order you create your widgets
> determines the default keyboard focus traversal which is what you are
> talking about when you use the <TAB> and <Shift-Tab>
> to change the focus. So if you can have your program build the widget
> heirarchy in the order you want the keyboard focus
> traversal to proceed it would be one simple solution.
>
> If you can't do that, you can change the
> the stacking order of the widgets which is what really controls
> the focus traversal. You can use the raise and lower
> Tk commands to change the stacking order after the widgets
> have already been created. This would have the effect of
> changing the keyboard traversal (I think). Check out the man page on
> raise, lower and tk_focusNext and tk_focusPrev
Within vTcl, it's the same issue. You can change stacking order with the
up and down (and left and right?) arrows without changing the layout of
the widgets. This sounds strange, but it occurs when you mix packing left
and right and/or top and bottom within one frame. Also, I think packing
several widgets all left will give a different order compared to the same
widgets all packed right, assuming that they are visually in the same
layout order.
If that is still confusing, consider 3 buttons packed left with the text
"1", "2" and "3" on them. The tab order is likely the packing order of 1,
2, 3. If you pack them to the right, you have to pack 3 first, then 2,
then one so they still look like 1-2-3 (you do this with the arrow keys.
But, now the tab order should be reversed.
Try clicking on widgets and playing with the arrow buttons and packing
sides and you'll see these things happen.
Ah, if you are using the "place" geometry manager in vTcl, probably none
of the vTcl instructions above apply...
...RickM...
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