Knowledge Base

BUG: PageFrame SubClass Invisible at Runtime

Article ID: 172447

Article Last Modified on 12/11/1999

Microsoft Visual FoxPro 5.0 Standard Edition
Microsoft Visual FoxPro 5.0a
Microsoft Visual FoxPro 6.0 Professional Edition

This article was previously published under Q172447

SYMPTOMS

A SubClass based on a PageFrame Class, whose PageCount property is set to 0, does not display any pages at design time and is invisible at run time.

RESOLUTION

A workaround is to set the PageCount property of the PageFrame class to a value greater than 0.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

MORE INFORMATION

Steps to Reproduce Behavior

Create a class, named "pgf," as follows:

      CREATE CLASS pgf OF MyClass AS PageFrame

When the Class Designer comes up, reset the PageCount to default by right-clicking the PageCount property of the PageFrame and then selecting the Reset To Default option from the Shortcut menu. This should set the PageCount property to 0.
Save the class and close Class Designer.

Create another class "pgfreal" based on "pgf" as follows:

      CREATE CLASS pgfreal OF MyClass AS pgf FROM MyClass

When the Class Designer comes up, set the PageCount to 3.
Save the Class and close the Class Designer.
Create a form as follows:
```
      CREATE FORM MyForm
```
Drop each of the classes, pgf and pgfreal, onto the form and observe that the PageFrames are displayed without any pages.
Run the Form and now observe that neither PageFrame appears.

Keywords: kbbug KB172447