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For 2023 (and 2024 ...) - we are now fully retired from IT training.
We have made many, many friends over 25 years of teaching about Python, Tcl, Perl, PHP, Lua, Java, C and C++ - and MySQL, Linux and Solaris/SunOS too. Our training notes are now very much out of date, but due to upward compatability most of our examples remain operational and even relevant ad you are welcome to make us if them "as seen" and at your own risk.

Lisa and I (Graham) now live in what was our training centre in Melksham - happy to meet with former delegates here - but do check ahead before coming round. We are far from inactive - rather, enjoying the times that we are retired but still healthy enough in mind and body to be active!

I am also active in many other area and still look after a lot of web sites - you can find an index ((here))
Tk Geometry strings

Posted by admin (Graham Ellis), 12 May 2005
What does this mean?

wm . -geometry 100x200+300-400

"Display the parent window 100 pixels wide by 200 pixels tall. Inset the left edge 300 pixels from the left of the screen, and the bottom edge 400 pixels up from the base of the screen"

The geometry specifications in Tk (and X Windows) contain up to four pieces of information - width and height followed by two offsets.  The offsets can be preceeded with a - sign to say that they're offsets from the right or bottom, or with a + sign to say that they're from the left or top.

Remember that geometry strings are technically only hints or suggestions to the window manager and you're not guaranteed to get what you ask for. (Bit like life really!).  If you want to be certain what you've been given, you should ask for the settings you want then use enquiry functions to see what you were able to actually secure.



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