www.delorie.com/gnu/docs/gcl/gcl-tk_22.html   search  
 
Buy GNU books!


Untitled Document

[ < ] [ > ]   [ << ] [ Up ] [ >> ]         [Top] [Contents] [Index] [ ? ]

A Button Widget's Arguments

The button command creates a new Tcl command whose name is pathName. This command may be used to invoke various operations on the widget. It has the following general form:

 
pathName option ?arg arg ...?

Option and the args determine the exact behavior of the command. The following commands are possible for button widgets:

pathName :activate
Change the button's state to active and redisplay the button using its active foreground and background colors instead of normal colors. This command is ignored if the button's state is disabled. This command is obsolete and will eventually be removed; use "pathName :configure :state active" instead.
pathName :configure ?option? ?value option value ...?
Query or modify the configuration options of the widget. If no option is specified, returns a list describing all of the available options for pathName (see Tk_ConfigureInfo for information on the format of this list). If option is specified with no value, then the command returns a list describing the one named option (this list will be identical to the corresponding sublist of the value returned if no option is specified). If one or more option:value pairs are specified, then the command modifies the given widget option(s) to have the given value(s); in this case the command returns an empty string. Option may have any of the values accepted by the button command.
pathName :deactivate
Change the button's state to normal and redisplay the button using its normal foreground and background colors. This command is ignored if the button's state is disabled. This command is obsolete and will eventually be removed; use "pathName :configure :state normal" instead.
pathName :flash
Flash the button. This is accomplished by redisplaying the button several times, alternating between active and normal colors. At the end of the flash the button is left in the same normal/active state as when the command was invoked. This command is ignored if the button's state is disabled.
pathName :invoke
Invoke the Tcl command associated with the button, if there is one. The return value is the return value from the Tcl command, or an empty string if there is no command associated with the button. This command is ignored if the button's state is disabled.


[ < ] [ > ]   [ << ] [ Up ] [ >> ]         [Top] [Contents] [Index] [ ? ]

  webmaster     delorie software   privacy  
  Copyright 2003   by The Free Software Foundation     Updated Jun 2003