LCD simulation i Visual Basic VERY slow

[MrEd]

Hi, I wanted to write a routine in Visual Basic to simulate a graphic LCD display by having a lot of squares as pixels that I either set to the background color or a darker color to be on. Now the problem is that it is shockingly slow to for example switch all pixels on. I want it to be fast as on a real graphic LCD display. My PC is fast so that can't be the problem, must be how it is done within VB that is the problem. Anyone who done something like this? Theoretically I want to make the LCD on the PC screen to be able to show animated graphics without the "slow motion fill the screen effect" I have now. Takes about a second to switch on or off 100 x 32 pixels.

Eddie

 

[Antharax]

VB is slow and using the windows GDI for drawing is slow too!
Perhaps you can do it like this:
* Create an off-screen Device Context
* Draw in that DC
* BitBlt it to the screen when the complete drawing is finished
**broken link removed**
http://www.officecomputertraining.com/vbtutorial/tutpages/page44.asp

or use DirectX
**broken link removed**
(or any of the other tutorials on this site)

Antharax

 

[MrEd]

YEEEESSSS!!!! I got it to work. Thanks a million, the project continues...

eddie