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

Last reviewed: December 4, 1997
Article ID: Q177336
The information in this article applies to:
  • Microsoft Visual FoxPro for Windows, versions 3.0, 3.0b, 5.0, 5.0a
  • Microsoft Visual FoxPro for Macintosh, version 3.0b

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

  1. 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 : FxprgClassoop VFoxMac vfoxwin
Version : MACINTOSH:3.0b; WINDOWS:3.0,3.0b,5.0,5.0a
Platform : MACINTOSH WINDOWS
Issue type : kbprb


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Last reviewed: December 4, 1997
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