Microsoft KB Archive/155085

= BUG: 3.0 WAIT WINDOW Display Performance Much Slower than 2.6 =

Article ID: 155085

Article Last Modified on 12/14/1999

-

APPLIES TO


 * Microsoft Visual FoxPro 3.0b for Macintosh

-



This article was previously published under Q155085



SYMPTOMS
The display speed difference of WAIT WINDOW under Visual FoxPro 3.0 may be many times slower than under FoxPro 2.6a. When using the WAIT WINDOW command to display status data, such as within a loop, the overhead time in displaying and updating the WAIT WINDOW may be substantial and may degrade overall performance.



WORKAROUND
Use SET MESSAGE to display text in the status bar.



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



MORE INFORMATION
The following table illustrates the times to completion for the following code loops, all run on a Power Macintosh 9500/132. Each loop cycles 1000 times, with each pass displaying a string up to 9 characters in length:    Loop           Product                         Time -- ---    WAIT WINDOW    Visual FoxPro 3.0 Power Mac      31.4 WAIT WINDOW   FoxPro 2.6 Power Mac              3.1 SET MESSAGE   Visual FoxPro 3.0                 4.2 SET MESSAGE   FoxPro 2.6 Power Mac              3.3 NOTE: With different hardware or shorter string lengths, the disparity in display speed between these two methods may not be as dramatic.

Sample Code
* WAIT WINDOW nStart = SECONDS FOR x = 1 to 1000 WAIT WINDOW REPLICATE( 'X', MOD( x, 10)) NOWAIT && cycling string ENDFOR ? "Time in seconds to run 1000 WAIT WINDOWs: " ?? SECONDS - nStart

* SET MESSAGE nStart = SECONDS FOR x = 1 to 1000 SET MESSAGE TO REPLICATE( 'X', MOD( x, 10)) && cycling string ENDFOR ? "Time in seconds to run 1000 SET MESSAGEs: " ?? SECONDS - nStart

Additional query words: vfoxmac kbdse

Keywords: KB155085

-

[mailto:TECHNET@MICROSOFT.COM Send feedback to Microsoft]

© Microsoft Corporation. All rights reserved.