Howard,
WinScreenLock and WinScreenUnlock allow you to do all of your changes to the form and
then have it appear all at once. The downside
is that these are OS3.5 functions.
Keith Wolcott
"Howard C. Shaw III" wrote:
> Palm OS 3.0 to 3.5 at least, all allow access to form elements before the
> form is drawn. Palm documentation says this is not allowable, and the debug
> roms fail if you do it.
>
> But I, for one, would very much prefer the current state of affairs to be
> recognized by Palm and documented as an allowed usage.
>
> Basically, with standard form elements, it provides a sort of
> double-buffering, in that you can make your changes to the not-yet-onscreen
> form, then draw the complete form, in its final edited stage.
>
> When using this illegal technique, forms pop-up already filled out, without
> the unpleasant flickering as various pieces are hidden and shown, or
> redrawn, etc.
>
> Is there any other way of achieving this admirable result, other than
> defying Palm's documentation and risking future code failure?
>
> What are the particular dangers to this approach, and why shouldn't it be
> supported?
>
> Howard C. Shaw III
> Programmer
> Tyrol Data Systems
>
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