Article ID: 132227
Article Last Modified on 2/11/2000
APPLIES TO
- Microsoft Visual FoxPro 3.0 Standard Edition
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
