Firing Sequence of Visual FoxPro Events

• Microsoft Visual FoxPro for Windows, version 3.0

SUMMARY

This article shows the general firing sequence of Visual FoxPro events. For more information, please search for the "Visual FoxPro Event Sequence" topic in the Visual FoxPro Help file.

There can be an infinite number of potential user interaction scenarios that will generate specific event sequences. An easy way to observe the order is to include the following lines of code in the events you are interested in:

   ACTIVATE SCREEN
   ? PROGRAM() 

MORE INFORMATION

For a description of event sequences in a simple user interaction scenario, please see Chapter 4 of the Visual FoxPro "Developer's Guide." For a detailed look at Visual FoxPro event sequences, run Controls.app from the Vfp\Samples\Controls directory, select "See Event Firing Sequences" in the Examples list, and choose Run Example.

The data environment's AutoOpenTables property is assumed to be set to true (.T.). Other events can occur based on user interaction and system response.

Object                            Events
--------------------------------------------------

Data environment                  BeforeOpenTables
Form set                          Load
Form                              Load
Data environment cursor(s)        Init
Data environment                  Init
Objects  (1)                      Init
Form set                          Activate
Form                              Activate
Object1  (2)                      When
Form                              GotFocus
Object1                           GotFocus
Object1                           Message
Object1                           Valid  (3)
Object1                           LostFocus
Object2  (4)                      When
Object2                           GotFocus
Object2                           Message
Object2                           Valid  (3)
Object2                           LostFocus
Form                              QueryUnload
Object  (5)                       Destroy
Form                              Unload
Form set                          Unload
Data environment                  AfterCloseTables
Data environment                  Destroy
Data environment cursor(s)        Destroy

(1) For each object, from innermost object to outermost container
(2) First object in the tab order
(3) As the object loses focus
(4) Next object to get focus
(5) For each object, from outermost container to innermost object 

Additional query words: VFoxWin

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