Exercises, examples and other material relating to training module T221. This topic is presented on public course Tcl/Tk

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Tcl - the Tk Toolkit - training course - The Graphic Application of Tcl through Tk Tcl - the Tk Toolkit - The Graphic Application of Tcl through Tk This course takes the programmer who's already learnt to program in Tcl forward into the ... http://www.wellho.net/course/tkfull.html  [course]

Tcl/Tk - updating your display while tasks are running Let me make two statements: 1. When you are popping up a new window from your program, the very last thing you want to see happen is for the window to ... http://www.wellho.net/mouth/1475_Tcl ... nning.html  [short article]

Menu bar system based on array or lists #!/usr/bin/wish proc hit {within actual args} { global currenthost currenttest set runtest 0 switch $within { ... http://www.wellho.net/resources/ex.php4?item=t221/mb3  [code sample]

First menu button #!/usr/bin/wish # menu - first example proc putshape {which} { set x [expr int(rand()*320)] set y [expr int(rand()*170)] set ... http://www.wellho.net/resources/ex.php4?item=t221/mb1  [code sample]

Various options for menu buttons #!/usr/bin/wish # menu buttons - showing extra options and flexibility proc putshape {which} { global pen boundary repmode set x [expr ... http://www.wellho.net/resources/ex.php4?item=t221/mb2  [code sample]

use of update idle tasks to update the display #!/usr/bin/wish # During a long running process, there's often a need # to update the display to keep the user informed. # update idletasks is the command ... http://www.wellho.net/resources/ex.php4?item=t221/idletasks  [code sample]

Update Idletasks initial screen http://www.wellho.net/pix/updateidletasks1.jpg  [picture]

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In Tcl/Tk, you'll often want pull-down menu selection. Briefly, you'll use a menu bar which comprises a number of menus. Each menu will comprise a number of menu items, some of which may be submenus. And each menu item will have an action associated with it. In this module, you learn the mechanisms used to create menus, and you learn programming techniques to allow you to create a flexible, maintainable menu system too.

This topic is presented on public course Tcl/Tk

idletasks	use of update idle tasks to update the display
mb1	First menu button
mb2	Various options for menu buttons
mb3	Menu bar system based on array or lists