[comp.windows.ms] HELP: scrolling algorithms for windows

c_leong@vaxa.uwa.oz (06/06/90)

I've just implemented a scrolling routine that uses the BitBlt functions in
MS Windows SDK, however, when the screen is scrolled a noticable
flash occurs as the screen is repainted. What I would like to know is how
programs like Excel implement their scrolling stratergy where movements
left and right ( or for that matter up or down) do not inccur a noticeable flash
of the screen? Is there a way of implementing a duo screen buffer.. where one is
shown while the other is repainted?

                               Clem
   
/---------------------------------------------------------------------------\
|----------------------------==> Clement Leong <==---------------------------|
|                               --------------                               |
| ACSnet: C_Leong@vaxa.uwa.oz       Snailnet: Department of Medicine         |                            |
| Bitnet: C_LEONG%vaxa.uwa.oz.au              University of Western Australia|
| ARPA:   C_LEONG@vaxa.uwa.oz                 QE 2 Medical Centre            |
| JANET:  vaxa.uwa.oz.au!C_LEONG@ukkc         Nedlands WA 6009               |
|                                                                            |
\---------------------------------------------------------------------------/