wolf@mel.cipl.uiowa (07/19/90)
Me Again, I was wondering how to use the alternate screen buffer to draw to one buffer before displaying it so as to avoid flicker? Also, what is the fastest way to scroll an image which is 1536 by 1536 bixels? I want some way in which it will scroll fast and take up as little space as possible (store it as a resource would be nice)? I need speed such that there will be not a noticable delay (don't want scrolling to get ahad of what is actually displayed). Is there a way to do any sort of bit operation to a Picture? Like loading a picture resource and somehow copying a selected rectangle of the Picture to an active grafport? Any suggestions? Any sample code in Pascal preferably. I want to be able to do this all on a standard SE (yet I have 2.5 Megs) Thanks all! WOLF@MEL.CIPL.UIOWA>EDU