Update - It seems I do NOT have Img installed on tcl9.0.
To check this, use the tcl interactive shell.
bgee@main2:~$ tclsh8.6
% package require Img
1.4.16
% exit
bgee@main2:~$ tclsh9.0
% package require Img
can't find package Img
% exit
I searched around but found nothing on how to install Img for tcl 9.0.
===============
Bill Gee
On 8/25/25 17:54, Bill Gee wrote:
Hi Olly -
Thanks for the information. I think it raises some new questions.
If tkimg is required for both PNG and JPG, then why do PNG files work
and JPG do not? If I have tkimg, then both should work, and if I do not
have it then neither should work. Is that correct?
How can I tell which versions of tcl have tkimg installed? If tkimg is
not present, will xTherion then show an error like it does when bwidget
is missing?
Looking at the code for xTherion, I see line 27254 which has "package
require Img". Is that the line where tkimg is loaded?
I have never taken steps to install either bwidget or tkimg specifically
for Tk/TCL. I have only used the RPM packages from the Fedora
repository. Here are the packages I have installed:
bgee@main2:~$ rpm -qa | grep tkimg
tkimg-1.4.16-4.fc42.x86_64
bgee@main2:~$ rpm -qa | grep bwidget
kf5-kjobwidgets-5.116.0-3.fc42.x86_64
bwidget-1.10.1-1.fc42.noarch
kf6-kjobwidgets-6.17.0-1.fc42.x86_64
bgee@main2:~$ rpm -qa | grep tcl
tcl8-8.6.15-10.fc42.x86_64
tcl-9.0.0-7.fc42.x86_64
===============
Bill Gee
On 8/25/25 16:49, Olly Betts wrote:
On Mon, Aug 25, 2025 at 10:10:32AM -0500, Bill Gee wrote:
According to this, specifying "-file $ffname" will load the image using
whatever format handler is registered for that type. Tk includes by
default
handlers for GIF and PPM/PGM formats. That is why PNG images still
work.
Note PNG is a completely different format to PPM/PGM (and also to GIF).
AIUI it you need tkimg to get support for both PNG and JPG.
So what is the deal? What does wish really do? Did the set of default
image handlers change between wish 8.6 and 9.0?
"wish" is a windowing Tcl shell.
My guess is you have tkimg installed for Tcl 8.6 but not for 9.0 (like
how you had bwidget installed for 9.0 but not 8.6 until you hacked
around that by adding a symlink),
Cheers,
Olly
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