Microsoft KB Archive/132227

= PRB: Can't Activate or Access an Object =

Article ID: 132227

Article Last Modified on 2/11/2000

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APPLIES TO


 * Microsoft Visual FoxPro 3.0 Standard Edition

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This article was previously published under Q132227



SYMPTOMS
After you define a class in a program (.PRG file) and run it, nothing happens. For example, the following code, when run in a .PRG file, executes and return to the Command window: DEFINE CLASS myform AS form ADD OBJECT cmd1 as commandbutton WITH ; top = 10, ; left = 10 ENDDEFINE



CAUSE
A class is simply a template or definition from which an object will be created. Defining a class does not create an instance of the class.



RESOLUTION
Building on the example above, the code example creates a template from which a new object can be created. To instantiate the defined class, you must add this additional code: PUBLIC MyForm MyForm = CREATEOBJECT("MyForm") && Create a new object MyForm.Show                     && Show the form Read Events                     && Keep the event loop alive

DEFINE CLASS myform AS form ADD OBJECT cmd1 as commandbutton WITH ; top = 60, ; left = 60 ENDDEFINE To cancel this code, click the Command box for this form, and click Close. Then on the Visual FoxPro menu, on the Program menu, click Cancel.



STATUS
This behavior is by design.



MORE INFORMATION
For additional information on objects and classes, please see these Help topics:


 * Class, defined.
 * Instance, defined.

Additional query words: VFoxWin OOP

Keywords: KB132227

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