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How to avoid flicker when changing pictures in image control
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09/07/2010 19:38:41
 
 
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General information
Forum:
Visual FoxPro
Category:
Forms & Form designer
Title:
How to avoid flicker when changing pictures in image control
Environment versions
Visual FoxPro:
VFP 9 SP2
OS:
Windows XP SP2
Network:
Windows XP
Database:
Visual FoxPro
Miscellaneous
Thread ID:
01472113
Message ID:
01472113
Views:
141
Hi Experts,

I have a form in a timekeeping app which shows the time.

In it, I have a timer with an interval of 1000 (1 second), which gets the current time using TIME(), then shows the corresponding image file (PNG) that represents each digit.

Everything is fine though except for the "flickering" of the screen each time the timer fires.

Below is my code in the Timer event:
* code here assigns the image filenames to the vars
* 
WITH ThisForm

   .LockScreen = .T.
   .imgHour1.Picture = lcHour1File
   .imgHour2.Picture = lcHour2File
   .imgMin1.Picture = lcMin1File
   .imgMin2.Picture = lcMin2File
   .imgSec1.Picture = lcSec1File
   .imgSec2.Picture = lcSec2File
   .LockScreen = .F.

ENDWITH
How do I stop the "flickering"?

Thanks in advance.

Dennis
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