Knowledge Base

PRB: READ EVENTS in Form's Init Causes the Form Not to Display

Article ID: 177336

Article Last Modified on 5/10/2003

APPLIES TO

Microsoft Visual FoxPro 3.0 Standard Edition
Microsoft Visual FoxPro 3.0b Standard Edition
Microsoft Visual FoxPro 5.0 Standard Edition
Microsoft Visual FoxPro 5.0a
Microsoft Visual FoxPro 6.0 Professional Edition
Microsoft Visual FoxPro 3.0b for Macintosh

This article was previously published under Q177336

SYMPTOMS

A form does not display when you run the form.

CAUSE

If you issue a READ EVENTS in the Init or Load event, the form does not get a chance to display before going into the event loop.

RESOLUTION

Here are two resolutions:

Place the READ EVENTS command in a method other than Init or Load. -or-
Use the ON KEY LABEL command to issue a CLEAR EVENTS. For example, place the following command in the Init event of the form:
```
      ON KEY LABEL ALT+X CLEAR EVENTS
```

and In the Destroy event of the form place the following command:

      ON KEY LABEL ALT+X

Now, after you run the form, when program execution stops at the READ EVENTS, you can press the ALT+X keys to clear the READ EVENTS and continue with program execution.

STATUS

This behavior is by design.

MORE INFORMATION

Steps to Reproduce Behavior

Create and run a FoxPro program with the following code:

      frmForm=CREATEOBJECT('frmformTest')
      frmForm.SHOW

      DEFINE CLASS frmFormTest AS FORM
      VISIBLE=.T.
      WINDOWTYPE=1

      PROCEDURE INIT
      **Comment the following line to see form.
      READ EVENTS
      ENDPROC

      PROCEDURE CLICK
      CLEAR EVENTS
      ENDPROC
      ENDDEFINE

NOTE: If you issue READ EVENTS in an event or a method of a form, then you need to issue CLEAR EVENTS before the form can be closed.

Additional query words: read events clear event form disappear

Keywords: kbprb KB177336