Wow...I thought I would whip this nice little eye-candy effect onto the
palm, and it's turning into quite a bother. I wonder if anyone else has
seen this and fixed it in a simpler way...(or if I've really done
something moronic with my code...;^).
When the user clicks on the screen, I want to gray out the screen still
displaying a bit of the game screen and display the interface bitmaps so
that it's clear that the bitmaps are what the user can interact with to
control the game.
So, I have a function called 'DimScreen' whose sole purpose is to mask a
gray bitmap over the screen, while still allowing some of the pixels to
shine through.
The functionality seemed pretty simple at first:
void DimScreen()
{
CustomPatternType pattern =
{0xaa,0x55,0xaa,0x55,0xaa,0x55,0xaa,0x55};
WinHandle winH;
RectangleType r;
// This does the same thing on OS 4.x
// NOTE: this doesn't work correctly on OS 3.1...I'm
working on a solution there.
WinPushDrawState();
winH = WinSetDrawWindow(WinGetDisplayWindow());
WinSetPattern((const CustomPatternType *)&pattern);
WinSetDrawMode(winMask);
WinGetWindowBounds(&r);
WinPaintRectangle(&r,0);
WinSetDrawWindow(winH);
WinPopDrawState();
}
...which of course didn't work on:
CLIE - Gave me apparently a yellow masking on everything instead of
black.
Handera - Completely blanked the screen.
PalmOS3.5 - gives me alternating bands of grey and white in bitdepths of
8 and 2.
PalmOS4.0 - works fine in all depths.
Anyone else see this behavior? Is my code horribly broken?
-Ken
P.S. As I find better solutions, I'll be posting my code on my web site,
http://www.flippinbits.com
--
For information on using the Palm Developer Forums, or to unsubscribe, please see
http://www.palmos.com/dev/support/forums/
