All,

I'd be interested to know latest thoughts on SYS(602) bitmap configuration under terminal services.

Standard VFP does refreshes using off-screen bitmaps that get snapped onto the visible screen for crisp refreshes; however, since this uses "a lot of memory" we were told that when using TS it's good practice to use SYS(602) to turn this feature off.

However: I have an app using backstyle_access in a grid control to deliver dynamic row appearance. Under RTS with off-screen bitmap off using sys(602), the grid flashes and flickers unpredictably. No problem with standard bitmap setting. I have experimented with set focus and similar, but the flickering continues intermittently if off-screen bitmaps are off.

VFP's use of memory seems very low regardless, so I would leave the setting on- except it was also suggested in one of the guru VFP books that VFP's standard bitmap behaviour can send a deluge of updates down the wire; I suppose that could be true if the whole screen gets refreshed every time compared to just updating the changes.

Does anybody have updated info on this?