My app doesn't use forms, well not really at least. Originally a single form was made at runtime with FrmNewForm. We have our own graphics buffer that we blit to the screen with WinDrawBitmap every N ticks.
I wouldn't be at all surprised to hear that things don't work well if you're not using forms (or windows), and instead are just throwing data at the screen. I'd also be very surprised if that technique continued to work in 6.0 or beyond, since it'll be common to have more on the screen than just your app.
It should be easy to make a single big form, which you resize to fill the available space, and for which you respond to frmUpdate events... and then you might well find that things start working better and are much cleaner. Better than hacking and "design by experimentation" :-)
We're no longer in the old world where you could assume that only your app is drawing to the screen; now we have to share and play nice. Understandably, doing a transition is difficult, but usually is worth it for the long term.
-David Fedor PalmSource, Inc.
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