Note, I tried this link and had no luck.
Problems with struct pointer pointer in calllib
1 view (last 30 days)
Show older comments
I'm working with a header that has the following declaration:
struct ADI_FileHandle__ { int unused; }; typedef struct ADI_FileHandle__ *ADI_FileHandle;
One function I am using is:
DLLEXPORT ADIResultCode ADI_OpenFile(const unsigned short* path, ADI_FileHandle* fileH, ADIFileOpenMode mode);
My Matlab code calling this is:
result = calllib('ADIDatIOWin','ADI_OpenFile',int16(file_path),file_handle_pointer,file_open_mode);
This results in a value for unused (structure field in ADI_FileHandle__ ). A typical value is something like 1654585380. The result value indicates a success.
I then try to call another function:
DLLEXPORT ADIResultCode ADI_GetNumberOfChannels(ADI_FileHandle fileH, long* nChannels);
in Matlab as:
file_handle_pointer = libpointer('ADI_FileHandle__Ptr');
set(file_handle_pointer,'Value',struct('unused',int32(1654585380)))
n_channels_pointer = libpointer('longPtr');
result = calllib('ADIDatIOWin','ADI_GetNumberOfChannels',file_handle_pointer,n_channels_pointer);
At this point Matlab crashes.
What am I missing?
Thanks, Jim
5 Comments
Answers (0)
See Also
Categories
Find more on Function Creation in Help Center and File Exchange
Products
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!