INFO: New SYS(2800) Function Improves Magnifier Accessibility Tool (262789)

SUMMARY

The SYS(2800) function controls Active Accessibility (AA) options in Visual FoxPro 6.0. Visual Studio 6.0 Service Pack 4 adds this function to Visual FoxPro 6.0.

MORE INFORMATION

One of the Windows 2000 Logo requirements is that Accessibility clients, such as the Magnifier utility, be able to follow the keyboard focus as a user moves from control to control. Because Visual FoxPro controls are bitmaps and not windows, they do not offer an interface that allows for the detection of keyboard movements by the operating system. For example, in Visual FoxPro, forms and the Visual FoxPro desktop are windows. Objects such as command buttons, list boxes, combo boxes, and text boxes are bitmaps in windows.

The SYS(2800,nflags) functions accept the following parameters for the NFLAGS value:

Value	Description
0	Active Accessibility disabled.
32	Used to create a fake caret. For AA client apps that follow the caret (magnifier).

REFERENCES

Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article. This bug was corrected in Visual Studio 6.0 Service Pack 5.

For additional information about Visual Studio service packs, click the following article numbers to view the articles in the Microsoft Knowledge Base:

194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why

194295 HOWTO: Tell That a Visual Studio Service Pack Is Installed

To download the latest Visual Studio service pack, visit the following Microsoft Web site:

http://msdn.microsoft.com/vstudio/downloads/updates/