Hi Christopher
The signature++ application does not work with 3.5 or above - I don't have the source
for it here at the moment so I can't remember why but I can tell you what to change.
Find the GetSignatureBitmap function and replace it with and it should work
BitmapPtr GetSignatureBitmap(RectangleType* theBoundsPtr){
WinHandle theWindowHandle;
UInt16 theError;
BitmapPtr theBitmap=NULL;
UInt16 theRowBytes, theHeight;
// Create an offscreen window to copy the bits bounded by the gadget into.
// This will make converting the window into a bitmap a little easier for me
// I could just copy the screen bits directly into the bitmap, but that
// would require more pointer arithmetic and POSE complains when you read
// directly from the screen.
theWindowHandle = WinCreateOffscreenWindow( theBoundsPtr->extent.x,
theBoundsPtr->extent.y, screenFormat, &theError );
if (!theError){
WinCopyRectangle( NULL, theWindowHandle, theBoundsPtr, 0, 0, scrCopy );
theRowBytes = theWindowHandle->gDeviceP->rowBytes;
theHeight = theWindowHandle->gDeviceP->height;
theBitmap = (BitmapPtr)MemPtrNew( sizeof(BitmapType) + (theRowBytes*theHeight) );
if (theBitmap){
MemSet( theBitmap, sizeof(BitmapType) + (theRowBytes*theHeight), 0 );
theBitmap->width = theWindowHandle->gDeviceP->width;
theBitmap->height = theWindowHandle->gDeviceP->height;
theBitmap->rowBytes = theWindowHandle->gDeviceP->rowBytes;
theBitmap->pixelSize = theWindowHandle->gDeviceP->pixelSize;
theBitmap->nextDepthOffset = NULL;
theBitmap->flags.compressed = theWindowHandle->gDeviceP->compressed;
theBitmap->version = 1;
theBitmap->flags.hasColorTable = 0;
MemMove( (Ptr)((ULong)(theBitmap) + sizeof(BitmapType)),
theWindowHandle->gDeviceP->baseAddr, theRowBytes * theHeight );
}
// if (theWindowHandle->bitmapP)
// theBitmap = WinGetBitmap(theWindowHandle);
WinDeleteWindow( theWindowHandle, false );
}
return theBitmap;
}
Hope this helps you out!
Fergal
> -----Original Message-----
> From: Christopher Kabat [mailto:[EMAIL PROTECTED]]
> Sent: 26 September 2001 15:55
> To: Palm Developer Forum
> Subject: Re: Capturing Signatures
>
>
> OK, here's where I show my complete newness and ignorance to
> the Palm platform. I got the signature++ sample and couldn't
> get it to compile. I'm using CodeWarrior for Palm OS V7
> which originally installed the 3.5 SDK. I changed the
> include of pilot.h to palmos.h and ended up with a plethora
> of compile errors and thats when I decided to just take the
> code out of the
> signature++ app and put it in my starter app. Is it possible that I'm
> running into some backwards compatibility issues, I wrote an
> entire app with the 3.5 sdk and it runs on my 3.32 symbol
> unit fine. I'm so confused.
>
> Thanks
> Chris Kabat
> "Avilla, Dane" <[EMAIL PROTECTED]> wrote in message
news:63387@palm-dev-forum...
>
> Hmm . . . Well, I wrote a bit long email, and then thought I would
> give
the
> sample code a try. I was able to get the Signature++ code working
> fine on
a
> 3.3 debug ROM in POSE. I even added some code to draw the saved
> bitmap to the screen above the signature input box and that worked.
>
> I had to modify the app so that it allowed itself to run on an OS 3.3
device
> (edit the call to RomVersionCompatible in StarterPilotMain), and then
> I added a WinDrawBitmap call at the end of CaptureSignature which just
> draws the saved bitmap to the screen after the user lifts the pen from
> drawing input.
>
> // Turn the drawing into a bitmap and save the bitmap in a global
> gBitmapPtr = GetSignatureBitmap( &theGadgetBounds );
>
> // Restore the old clipping rectangle
> WinSetClip( &theClipRectangle );
>
> // NEW LINE ADDED
> WinDrawBitmap (gBitmapPtr, 5,5);
> }
>
> This appears to be working fine in my test case. Are you able to get
> the example working? If so, perhaps there is a problem in how you
> transformed the code from the Signature++ example into your own code .
> . .
>
> Cheers,
>
> -DGA
>
>
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