DlgControlId(Identifier)
Used within a dialog function to return the numeric identifier for the dialog box control
specified by Identifier, the string identifier of the dialog box control. Numeric identifiers
are numbers, starting at 0 (zero) , that correspond to the positions of the dialog box control
instructions within a dialog box definition. For example, consider the following instruction in
a dialog box definition:
CheckBox 90, 50, 30, 12, , .MyCheckBox
The
instruction DlgControlId(MyCheckBox) returns 0 (zero)
if the CheckBox instruction is the first instruction in the dialog
box definition, 1 if it is the second, and so on.
In most cases,
your dialog functions perform actions based on the string identifier
of the control that was selected.