C++ NullReferenceException

[ahLi]

Hi i have this runtime problem when call a method.

BioAPI_BIR_PTR birData = NULL;
BioAPI_GetBIRFromHandle
(gModuleHandleCapture,
CapturedImage,
&birData);

During runtime, the NullReferenceException points to the &birData argument. Anybody know what's wrong?

Thanks.

[Jason]

BioAPI_BIR_PTR birData = NULL;
BioAPI_GetBIRFromHandle
(gModuleHandleCapture,
CapturedImage,
&birData);

so the value of birData is null but you are trying to pass the address to the value. You might try changing
BioAPI_BIR_PTR birData = NULL;
to
BioAPI_BIR_PTR *birData = NULL;

that might give you the correct results, otherwise I might be to rusty on my pointers and explanations...



Jason