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Using CALL_FORM with OPEN_FORM in the Same Application

When you execute CALL_FORM to invoke a modal form, the calling form is disabled until the end user exits the called form (and returns to the calling form). When a calling form is disabled, its windows are greyed out, and end users are unable to set focus to items in the form.

A called form can in turn call another form. The result is three forms loaded in memory one of which is active and available to the end user. When successive forms are loaded with the CALL_FORM procedure, the resulting module hierarchy is known as the call form stack.

Using CALL_FORM with OPEN_FORM in the same application Restrictions

When you invoke multiple forms in the same application with the Built-in procedures OPEN_FORM and CALL_FORM, be aware of the following restrictions:

Using CALL_FORM with OPEN_FORM in the same application Examples