IMAQ Image to DLL

[tornut]

Hello,

I want to pass an IMAQ Image to my Visual C++ DLL. For testing purposes is tried the imaqGetImageSize function, but I always get the error message "not an image". Here is my code:

#include "stdafx.h"

#include "image_test.h"

#include "extcode.h"

#include "nivision.h"

IMAGE_TEST_API long readEndpointImages(const Image **test, int *xRes, int *yRes);IMAGE_TEST_API long readEndpointImages(const Image **test, int *xRes, int *yRes)

{

imaqGetImageSize(*test, xRes, yRes);

return imaqGetLastError();

}

In LabVIEW I call the DLL via the Call Library Function, there I pass the image as "Adapt to Type" and "Handles by Value". The other variables are passed as pointers to 32-Bit-Integer...

What am I doing wrong?

Thanks

Daniel

[Andrey_Dmitriev]

Hi, Daniel,

Please read this:

http://forums.ni.com/ni/board/message?board.id=200&message.id=16579

You will found answer in the middle of the discussion.

Andrey.

[tornut]

Hi Andrey,

thank you very much, this is exactly what I'm looking for. But what is this for a symbol between the "IMAQ SetImageSize" and the "Call Library Function Node"? I can't find it 😞

Daniel

[Andrey_Dmitriev]

This is IMAQ Image Datatype to Image Cluster.vi. This SubVI is not present in the palette,

located in <Program Files>\National Instruments\LabVIEW x.x\vi.lib\vision\DatatypeConversion.llb

Andrey.

[tornut]

THANKS!!!!!