If you use Windows, easiest way to access external code is .NET
interface. Is there a .NET interface for the Canon camera? If there is,
use it.
If there is no .NET interface and you have problems calling the SDK DLL directly,
It's quite easy to write a .NET interface (wrapper) for C++ code (if
the SDK is written according to C++ standards and works with Visual Studio .NET). Check
MSDN to find out how to write managed extension (.NET wrappers) on existing C++ code. There is a simple
example
of such a wrapper for an existing C++ class. If you have existing C++
methods, just write a class that has similar methods that upon call
call these SDK methods.
After having written the wrapper, build it (having the managed
extension turned on!) and you can access the class from .NET interface
of labview directly. If the data types cause problems, you can try to
transform the data types in the wrapper methods.
Something like the following may work:
# include "SDK_includes_here.h"
# include "SDK_includes_here.h"
# include "SDK_includes_here.h"
// You need a class for your method.
// If you have many methods, you can add them to the same class
__gc class CanonClass
{
public:
// constructor
CanonClass() { }
// destructor
~CanonClass() { }
// method
cdCAPI MyMethod( cdSourceInfo* pSourceInfo, cdHSource* pSource )
{
return RCOpenSource ( cdSourceInfo* pSourceInfo, cdHSource* pSource );
}
};
Message Edited by Tomi M on 11-20-2005 01:26 AM
Message Edited by Tomi M on 11-20-2005 01:27 AM
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Tomi Maila
