Accessing The Value of a TixControl Widget<A NAME=122> </A>

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### Accessing The Value of a TixControl Widget

The TixControl widget allows the user to input a value. There are several ways to read this value in your program. First of all, TixControl stores the current value in the `-value` option. You can use query the `-value` option by calling the command

`.c cget -value` this command will return the current value of the tixContro widget `.c`. The following command sets the value of the widget to a new number (100):

`.c config -value 100`

The second way to access the value of TixControl is to use the `-variable` option. This options instructs the TixControl widget to store the its value into a global variable so that you can read it at any time. Also, by assigning a new value to this global variable, you can change the value of the TixControl widget. Here is an example:

`.c config -variable myvar
set myvar 100`

In some situations, you may want to be informed immediately when the value of the TixControl widget changes. To accomplish this, you can use the `-command` option. The following line causes the TCL procedure `valueChanged` to be called whenever the value of `.c` changes:

`tixControl .c -command valueChanged`