[MACTCL] Some bugs?

[Neil M. <ne...@cs...>]

Hello all,

I've run into a couple of possible bugs in TkAqua, which I thought I'd 
bring up here (I can't find anything related in the mailing list or Tk 
bug tracker, but I only did a brief search). Firstly, configuring a 
cursor to {} doesn't always work in TkAqua. It seems to work if you 
interactively change the cursor from the console, e.g.

pack [label .l -text "Hello, World!"]
.l configure -cursor hand
.l configure -cursor {} ;# Works - cursor is pointer again

but, it doesn't seem to work for some event bindings, e.g. in the text 
widget (only place I've noticed this):

pack [text .t]
.t tag configure link -foreground red -underline 1
.t tag bind link <Enter> [list .t configure -cursor hand]
.t tag bind link <Leave> [list .t configure -cursor {}]
.t insert end "Normal text\n"
.t insert end "This is a link\n" link
.t insert end "More normal text\n"

Now, when you move the mouse over the link it changes to the hand 
cursor. However, when you move away again the cursor stays as a hand. 
The <Leave> event appears to always fire, so I assume this is a problem 
with the configure -cursor stuff.

I can't find the relevant Tk documentation on what -cursor {} is 
supposed to do, but most apps assume it reverts to the default cursor 
(which is the behaviour on UNIX/Windows IIRC). TkChat exhibits this 
behaviour for instance.

The other possible bug I've discovered is again in TkChat. For some 
reason buttons don't appear on some of the dialog boxes. For instance, 
when you log on, it asks you to choose how much history to load. When 
this box initially appears, the OK button is not visible. You have to 
click on a radio button option to get it to appear. The help->about box 
is even worse, as the button doesn't appear, and there are no controls 
which could make it appear. You have to just know where the dismiss 
button is. It appears only when you click on it. I haven't delved 
deeply enough into tkchat to see what they are doing, and I cannot 
reproduce the bug from an interactive console.

So - are these known bugs/features? Need more info? (Using TclTkAquaBI 
8.4.5 on Panther).

Cheers,

Neil