 |  |
4.22. Invoking the Button
Theinvoke method invokes the subroutine to which the -command option points. Once you use -command to assign the callback, whenever you need to perform that same task, you can use invoke:
$button->invoke( );
|  | |
| 4.21. Flashing the Button |  | 4.23. Turning a Checkbutton/Radiobutton On and Off |
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