is_cancel = flag;

Activate this button when [ESC] is pressed.

This attribute selects a button when the user presses the [Esc] key. Only one button in a dialog box is permitted to have the is_cancel attribute set to true. Typically, you use the is_cancel attribute for the Cancel button.

flag: true or false (default).

Example

is_cancel = true;

action = ("done_dialog");

NOTE When a button has the is_cancel attribute, you should have the action attribute call the LISP done_dialog function. If you don't, Bricscad automatically terminates the dialog box when the DIASTAT system variable is set to 0.

Valid Tile

button

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Programming Overview of DCL (Dialog Control Language)

About Predefined Attributes