Re: [MACTCL] Popup Boxes on MacTclTk

[Daniel A. S. <st...@ic...>]

At 20:10 -0700 on 28/8/01, Jim Ingham wrote:
>Yeah, but Tk handles most enter/leave tracking and focus change on 
>its own, and doesn't rely on the window managers for most of this 
>stuff, so I am not sure how much difference this would make.  In my 
>experience with X11 Tk widget behavior doesn't much change when in 
>an overrideredirect window.  It might cause problems to change this.

the problem with overrideredirect is that the enter/leave tracking is 
different on the mac from the other platforms, i.e. raising an 
overrideredirect window doesn't trigger a leave on the current window 
on unix, but it does on the mac, that was the whole reason for this 
thread, current Tk help balloons implementations rely on this 
behaviour, the only easy way I found to replicate it on the mac is to 
make the balloon windows float.
(how does this work on AquaTk? i.e. does the balloon popup from 
http://mini.net/tcl/534.html work? if yes what have you changed to 
make it work?)

>>the problem is that you can't use carbon features selectively, if 
>>you want to use any carbon feature such as the kHelpWindowClass you 
>>have to go carbon all the way, which we can't really do with 
>>classic Tk...
>
>This isn't true in this case.  TkMacHaveAppearance returns the 
>Appearance version, so when you got a request for a help window 
>passed into unsupported1 you would pass kHelpWindowClass to the 
>CreateWindow cal if the Appearance version is > 1.1, and one of the 
>floating windows members of the enum otherwise.  It is not even a 
>different API, it is just some number passed to the Window Manager 
>API's.

yes I realize that, but even so it doesn't work... I just tried, even 
with CarbonLib 1.4 installed, I can't use kHelpWindowClass in 
CreateNewWindow from the classic Tk, I suspect only apps linked with 
carbon lib have access to kHelpWindowClass, a shame really. maybe 
there is a way around that?

>Yeah, but on systems that support it, the real help tag window is 
>lots nicer.  I will send you the patches I made for the X version if 
>you want when I get in to work tomorrow, and if somebody feels like 
>conditionalizing it for different Appearance versions, they are 
>welcome...

ok, great, thanks, I'll have a look. Sadly according to MacHelp.h, 
the new Help Tags API isn't available from classic Tk either, that 
would have been another way to go.

Cheers,

Daniel
-- 
** Daniel A. Steffen          **  "And now to something completely
** Department of Mathematics  **   different"    Monty Python
** Macquarie University       ** <mailto:st...@ma...>
** NSW 2109 Australia         ** <http://www.maths.mq.edu.au/~steffen/>