Re: [Tile-dev] alternate entry background?

[Joe E. <jen...@fl...>]

Jeff Hobbs wrote:

> Is there any way to control the entry fieldbackground?  The
> use case (a pretty standard one) is to signify invalid data
> in the entry field.  I've played a bit with style mapping
> for a TEntry variant, but no luck ... is this possible yet?

Depending on the theme:

    style map TEntry -fieldbackground {invalid #FF7777}

This doesn't work everywhere -- in particular, it will have 
no effect on Windows XP (since the EP_EDITTEXT theme part 
always uses system colors, and there's no ETS_* flag
corresponding to an "invalid" state).   "-foreground"
ought to work in all themes AFAIK.

Hm... and just to cover all the bases, better do:

    style map TEntry \
    	-fieldbackground {invalid #FF7777} \
    	-background {invalid #FF7777} \
	;

since the various themes aren't completely consistent wrt. 
option names in 0.6.

Also, for now you'll need to set [$e state invalid] / [$e state !invalid]
by hand in the -validatecommand.

(The ttk::entry widget should set the 'invalid' bit
automatically whenever revalidation fails, I just haven't
gotten around to implementing it yet.  The other part of the
plan is for ttk::entry widgets to accept all edits whenever the
'invalid' bit is set, even when prevalidation fails, and to
automatically clear the bit when (re|pre)validation succeeds.
This will prevent "validation lockout" where you've got an
invalid value and can't make it valid with a single keystroke.)


--Joe English

  jen...@fl...