Here are the code routines:
btw, the bitmap data is saved with dynamic string fields (at the end of each
record). That is why I typecast the BitmapPtr as char* when performing the
write operation. Works like a champ in anything other than 5.0
Displaying Bitmap:
------------------------------------------------------------------------
// Signature Box
GetSignatureGadgetBounds(frmP, &bounds);
WinPaintRectangleFrame(simpleFrame, &bounds);
if (GetBitMacro(recP->flags.allBits, diveLogStringSignature) != 0)
{
signatureP = (BitmapPtr)record.fields[logStringSignature];
signatureLen = BmpSize(signatureP);
bitmapP = MemPtrNew(signatureLen);
if (bitmapP)
{
MemMove(bitmapP, signatureP, signatureLen);
BmpCompress(bitmapP, BitmapCompressionTypeNone);
WinDrawBitmap(bitmapP, bounds.topLeft.x, bounds.topLeft.y);
MemPtrUnlock(bitmapP);
MemPtrFree(bitmapP);
}
}
Retrieving bitmap from window gadget to store:
-----------------------------------------------------------------------
// Create offscreen window to copy the bits surrounded by gadget into.
signatureWinH = WinCreateOffscreenWindow(boundsP->extent.x,
boundsP->extent.y,
screenFormat, &err);
if (!err)
{
// Copy gadget screen rectangle into the new window.
WinCopyRectangle(NULL, signatureWinH, boundsP, 0, 0, winPaint);
signatureP = WinGetBitmap(signatureWinH);
bitmapSize = BmpSize(signatureP);
bitmapP = (char*)MemPtrNew(bitmapSize);
if (bitmapP)
{
MemSet(bitmapP, bitmapSize, 0);
MemMove(bitmapP, signatureP, bitmapSize);
}
WinDeleteWindow(signatureWinH, false);
Finally, saving bitmap to database:
--------------------------------------------------------------------------
// Signature Bitmap
case logStringSignature:
GetSignatureGadgetBounds(frmP, &bounds);
signatureP = GetSignatureBitmap(&bounds);
BmpCompress(signatureP, BitmapCompressionTypeRLE);
signatureLen = BmpSize(signatureP);
if (!signatureLen) fieldP = NULL;
else fieldP = (char*)signatureP;
break;
"SLO Revo News" <[EMAIL PROTECTED]> wrote in message
news:[EMAIL PROTECTED]
> >That's strange, this link:
> >http://www.palmos.com/dev/support/docs/palmos/Bitmap.html#998439
> >takes me straight to the BmpCompress() function and the OS5 verbage is
> >clearly listed there.
>
> It's is kind of strange.
>
> >My app has a signature box. Works fine under 4.0 and below. On 5.0, the
> >signature box is filled with static garbage. At first I thought it might
be
> >a problem going from a monochrome (i.e. 1 bit) pixel depth to the 16-bit
> >depth. After verifying everything it was doing including the bit data,
it
> >just appeard that the function just was not working properly. At least,
> >that is what it seems to be happening.
>
> Are you able to post some code?
>
>
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