Grid is one of several Geometry Managers. Some others are pack and place.
http://www.purl.org/tcl/home/man/tcl8.4/TkCmd/grid.htm
The Book Practical Programming in Tcl and Tk, Fourth Edition contains an excellent introduction into the grid command which is available online at [L1 ].
Grid is excellent for many kinds of common GUI forms, because it arranges widgets in nice rows and columns, and handles resizing quite nicely.
DKF - The term Grid also refers to the very high end of resource sharing systems over the internet which it is likely that people will be hearing a lot more about in the future, especially in phrases like Grid Services...
TclGlobus is a project to allow Grid interfaces in Tcl: http://tclglobus.ligo.caltech.edu/
grid slave ?slave ...? ?options?
grid bbox master ?column row? ?column2 row2?
grid columnconfigure master index ?-option value...?
grid configure slave ?slave ...? ?options?
grid forget slave ?slave ...?
grid info slave
grid location master x y
grid propagate master ?boolean?
grid remove slave ?slave ...?
grid rowconfigure master index ?-option value...?
grid size master
grid slaves master ?-option value?
If the first argument to grid is suitable as the first slave argument to grid configure, either a window name (any value starting with .) or one of the characters x or ^ (see the "RELATIVE PLACEMENT" section below), then the command is processed in the same way as grid configure.
A Simple example is a panel with just a few labels and entries.
package require Tk foreach field {Name Address City State Phone} { # Create a couple of widgets set l [label .lab$field -text $field] set e [entry .ent$field -justify right ] # Assign both to a row in the grid grid $l $e -padx 4 -pady 4 # Then adjust how they appear grid $l -sticky e grid $e -sticky ew } # X-resize is done by the entry column grid columnconfigure . 1 -weight 1 # Y-resize should be at the bottom... set lastrow [lindex [grid size .] 1] grid rowconfigure . $lastrow -weight 1
For a little more complex example, see A little spreadsheet.
Category Command - Tk syntax help - Arts and Crafts of Tcl-Tk Programming - Category GUI