RE: [Tile-dev] New feature: ttk::dialog

[Jeff H. <je...@Ac...>]

> Agreed.  I was thinking of something along these lines
> for -command return code interpretations:
> 
>     TCL_OK --
>     	Default behavior -- dismiss the dialog if '-persistent false',
> 	leave it up if '-persistent true'.
>     TCL_BREAK --
>     	Always dismiss the dialog (overriding '-persistent true')
>     TCL_CONTINUE --
>     	Always leave the dialog up (overriding '-persistent false')
>     TCL_RETURN --
>     	(same as TCL_OK?)

The -persistent option to me seems more like "destroy" vs
"withdraw", rather than stay up or not.  Otherwise, that
break and continue differentiation seems ok.

>     TCL_ERROR --
>     	Return the error result to the caller (normally
> 	the event loop, which will eventually call bgerror).
> 	Not sure what else should happen -- probably ought
> 	to release the grab if '-modal true' was set.

Always ensure the appropriate catch's are in the code to release
grab if the user causes an error situation.

>     Other --
>     	Return the completion code/result/other return options
> 	to to the caller.

Jeff