STR #1501: Fl_Browser_: Never say "never".

STR #1501

Application:	FLTK Library
Status:	1 - Closed w/Resolution
Priority:	2 - Low, e.g. a documentation error or undocumented side-effect
Scope:	3 - Applies to all machines and operating systems
Subsystem:	Core Library
Summary:	Fl_Browser_: Never say "never".
Version:	1.1-current
Created By:	wilson.afn
Assigned To:	matt
Fix Version:	1.1-current (SVN: v5639)
Update Notification:	Receive EMails Don't Receive EMails

Trouble Report Files:

#1	wilson.afn 20:23 Nov 17, 2006

foo.fl
1k

Trouble Report Comments:

#1	wilson.afn 20:23 Nov 17, 2006

FC5, GCC 4.1.1 (although I'm not sure it matters). I'm trying to subclass an Fl_Browser_ using a fluid-built dialog. I want to set a callback, but "o->when(FL_WHEN_NEVER);" it and "this->do_callback();" at a more appropriate time. Strangely, when I inform fluid of my intention, it generates "o->when(2);" instead of the expected "o->when(0);" It doesn't seem to matter, though. If I manually insert the latter in "extra code", the callback is still called. Does "never" mean "only occasionally"? Frankly, I'm not even sure this is a bug. It may be a documentation problem. Fl_Browser_ does a lot, and I imagine it's entitled to use callbacks if it wants. I've attached a fluid spec that illustrates the problem. Use the cursor keys to change the selection in the 3-item browser.

#2	matt 08:17 Jan 24, 2007

The first mistery is solved: Fluid puts "2" into the "when" field if you have "not changed" switched on. This is a bug that'll be easy to fix. The second one is probably just an oversight when calling "select". I will look into it.

#3	matt 12:35 Jan 24, 2007

Fixed in Subversion repository. If ixed Fluid to not output illegal bit combinations in "when, particularly the combinations of "never" and "always", which non-surprisingly leads to misunderstandings in the code later. The better solution though would be to make it impossible to enter such combinations to begin with. I also fixed Fl_Browser_ which would unconditionally call the callback on keyboard events, even if "when" was set to "never".