ACC: DoEvents, SendKeys May Not Be Supported in UDFs

ID: Q89592

The information in this article applies to:

Microsoft Access versions 1.0, 1.1, 2.0, 7.0, 97

SUMMARY

Moderate: Requires basic macro, coding, and interoperability skills.

Under certain circumstances, DoEvents and SendKeys are not supported when called by user-defined (custom) functions in Visual Basic for Applications (or Access Basic in versions 1.x and 2.0).

MORE INFORMATION

DoEvents and SendKeys are not supported in user-defined functions in the following situations:

When calculating a field in a query.

When calculating a control on a form or report.

From a Visual Basic (or Access Basic) Fill function for a list box, combo box, or OLE Object field.

The DoEvents statement will not allow messages to be processed in these circumstances; instead, it will immediately return. Thus, any keys sent through SendKeys statements or functions will not be processed until all the computations listed above have been completed and responses have been returned to the user.

REFERENCES

For more information about DoEvents, search the Help Index for "DoEvents."

For more information about SendKeys, search the Help Index for "SendKeys Statement."

Additional query words: udf


Keywords          : kbprg PgmErr 
Version           : 1.0 1.1 2.0 7.0 97
Platform          : WINDOWS 
Issue type        : kbinfo

Last Reviewed: March 10, 1999