Creating an SCO Visual Tcl program -- an overview

Defining the callbacks

The graphic above shows what callbacks are needed; namely, one for each button that can be pushed and for which we want a callback. These callbacks are:

MenuKillCB: invoked when Kill Selected is selected from the Process menu
MenuExitCB: invoked when Exit is selected from the Process menu
MenuRefreshCB: invoked when Refresh is selected from the View menu
KillFormOkCB: invoked when OK is chosen from the question dialog

When the user clicks on Cancel in the question dialog, no action should take place. Therefore, a callback is not defined for Cancel.

Callback routines can have any name. The convention typically used is to end callback names with the letters CB (for callback).