Before setting to 4-bit grayscale, you should check whether the device
supports this mode. If it only supports 1-bit (or 2-bit for that
matter), it won't be able to do 4-bit.
That is, your tmpdepthP could be 0x00000001 (1-bit), 0x00000003 (2-bit),
but not 0x000000B (4-bit).
Huy
> Date: Tue, 14 Aug 2001 21:21:35 -0700
> From: "Todd Walk" <[EMAIL PROTECTED]>
>Subject: converting 8-bit color -> 4-bit gray problem
>
>I've got most of my app up and running in 8-bit color.
>I've started to convert it to 4-bit grayscale.
>
>It compiles fine, but when I run it on the emulator with
>devices that should have a 4-bit display, I get a 1-bit
>output.
>
>Any ideas?
>
>I'm using the code below to try to force it into the correct mode.
>(widthP, etc are globals.)
>
> UInt32 tmpdepthP;
> Boolean tmpenableColorP;
>
>WinScreenMode(winScreenModeGetSupportedDepths,NULL,NULL,&tmpdepthP,NULL);
> >WinScreenMode(winScreenModeGet,&widthP,&heightP,&depthP,&enableColorP);
> if(tmpdepthP>=128) //color
> {
> tmpdepthP=8;
> tmpenableColorP=true;
> >WinScreenMode(winScreenModeSet,NULL,NULL,&tmpdepthP,&tmpenableColorP);
> }
> else //16 shade gray
> {
> tmpdepthP=4;
> WinScreenMode(winScreenModeSet,NULL,NULL,&tmpdepthP,NULL);
> }
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/tech/support/forums/
