David,
Thanks for the reply.
I found the examples you mentioned. I even figured out a way (I think) to
copy the header and data bits independently for OS 3.5/4 (see below). Yet,
this still does not work in OS 5.
My problem with the BitmapRsrc code is that it starts by building a BMP
resource bit by bit. It calls its version of BmpCreate and fills it by
setting each pixel's RGB value. I am wanting to grab a region from the
screen and save it. Hopefully I don't have to do it a pixel at a time.
When I try to create a new BMP and populate it myself, I seem to get all
different sizes resulting from various WinCreate, BmpCreate, etc. I realize
the simulator adjusts between low density and high density for
compatibility. Yet, I cannot seem to get it to use just high density mode
and work like the pre OS 5 code does.
Do you feel there is a way to get a screen region, store its BMP header and
data bits, then restore it, all without resorting to a pixel level copy?
Any ideas on how to make something like this work?
Thanks again for the assistance!
Dave
winHandle = WinCreateOffscreenWindow(drawData.r.extent.x,
drawData.r.extent.y, screenFormat, &err );
WinCopyRectangle(NULL, winHandle, &drawData.r, 0, 0, winPaint);
pLocalBitmap = WinGetBitmap(winHandle);
BmpGetSizes(pLocalBitmap, &dataSizeP, &headerSizeP);
nSize = dataSizeP + headerSizeP;
pData = MemPtrNew(nSize);
MemSet(pData, nSize, 0);
MemMove(pData, pLocalBitmap, headerSizeP);
MemMove(pData + headerSizeP, BmpGetBits(pLocalBitmap), dataSizeP);
WinDrawBitmap((BitmapPtr)pData, drawData.r.topLeft.x,
drawData.r.topLeft.y); << Redraw to verify
WinDeleteWindow(winHandle, false);
Is this bad code for OS 3.5/4.0? BTW. The screen region BMP will only be
restored to the same device. Also, the stored BMP images do not have to
work between OS versions.
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