Use of C gm function inside C++ code (AutoOrientImage example)

Hello

What's the best way I can use a C libGraphicsMagick function in C++ code?

Let's use AutoOrientImage (from magick/shear.h) as an example.
I tried:


Magick::Image image;
image.read(.....)

// auto orient
MagickLib::ExceptionInfo tmpException;
MagickLib::Image *tmpImage = AutoOrientImage(image.image(),
	image.orientation(), &tmpException);
image.replaceImage(tmpImage);


but it fails with:

magick/shear.c:204: AutoOrientImage: Assertion `exception->signature == 
MagickSignature' failed.
Magick: abort due to signal 6 (SIGABRT) "Abort"...

What's the best way to accomplish that?

--
Regards
Przemysław Sobala

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