Here's a script I used with a DLL from Measurement Computing Corporation. Feel free to modify file names, etc. for your purposes:
% Make a protype file for the cbw.h file.
% That .h file is needed to call loadlibrary() which loads the functions from cbw64.DLL into memory.
% However you can't use the h file in a stand alone, compiled program.
% You must create a prototype file and use that instead of the h file.
% You must have run "mex -setup" and "mcc -setup" to set up the compiler.
% Useful references:
% http://www.mathworks.com/help/matlab/matlab_external/create-alias-function-name-using-prototype-file.html
% http://www.mathworks.com/help/matlab/ref/loadlibrary.html#btjfvd3
% http://www.mathworks.com/matlabcentral/answers/32007
% http://www.mathworks.com/help/matlab/matlab_external/prototype-files.html
%------------------------------------------------------------------------------------------------------
clc; % Clear the command window.
% First specify the h file that will be used to create the prototype file.
hFileName = 'C:\Users\Public\Documents\Measurement Computing\DAQ\C\cbw64.h';
% See if it exists or not.
if exist(hFileName, 'file')
% Good - it exists!
fprintf('The .h file name = %s\n', hFileName);
else
% Bad - it is missing! Cannot continue.
errorMessage = sprintf('Error: The .h file name = %s does not exist!\nCannot create the prototype file.\n', hFileName);
warndlg(errorMessage);
return;
end
% Delete existing file, if there is an existing file.
prototypeFileName = fullfile(pwd, 'cbw_prototype_file.m');
if exist(prototypeFileName, 'file')
% Send them to the recycle bin instead of destroying them totally,
% just in case we need to recover an old one.
recycle('on');
% Delete the file (send to recycle bin).
delete(prototypeFileName);
fprintf('Deleted existing prototype file %s\n', prototypeFileName);
% Creating a prototype file also creates a bunch of intermediate files
% with "thunk" in their names. Delete these also, just to clean up totally.
thunkFiles = fullfile(pwd, '\cbw64_thunk*.*');
delete('D:\Matlab\work\yourProject\cbw64_thunk*.*')
fprintf('Deleted existing thunk files %s\n', thunkFiles);
end
% Note, you can't call loadlibrary (which creates the prototype file)
% if the library is already loaded - it won't do anything at all.
% We must check if the library is loaded, and if it is loaded, we must unload the library.
if libisloaded('cbw64')
% Library is currently loaded into memory.
fprintf('cbw64 library is unloaded. Unloading it so we can create a new prototype file . . .\n');
unloadlibrary('cbw64'); % Unload it.
if ~libisloaded('cbw64') % Double check that it is gone.
% Verify to user if the unloading worked.
fprintf('cbw64 library has been unloaded.\n');
else
% Should not get here.
fprintf('Error: cbw64 library could not be unloaded. Exiting without creating prototype file.\n');
end
end
% Now call load library with the 'mfilename' option to create the prototype file.
fprintf('Creating prototype file: %s . . .\nPlease wait . . .\n', prototypeFileName);
% Do the actual generation of the prototype file.
% IMPORTANT NOTE: It will create a cbw_prototype_file.m file in the current folder, not the folder containing the h file.
% The first argument must be the name of the library in the DLL file that uses the .h file,
% in this case it's called cbw64, which is in cbw64.dll, despite the fact that the h file is cbw (no "64" in the filename).
% Finally, now we actually create the prototype file (plus a bunch of thunk files that we don't need).
loadlibrary('cbw64', hFileName, 'mfilename', 'cbw_prototype_file')
successMessage = sprintf('Done creating prototype file %s\n', prototypeFileName);
fprintf('%s\n', successMessage);
% Play a small sound to alert the user.
PlaySoundFile('D:\WaveFiles\Effects', 'DingLing.wav');
% Pop up a message box notifying user of success.
helpdlg(successMessage);
% Note: this may generate warnings if there are functions in the
% h file that are not in the library (I think that's the reason):
% Warning: The function 'cbMemSetDTMode' was not found in the library
% Warning: The data type 'FcnPtr' used by function cbEnableEvent does not exist.
% You can ignore these warnings (unless you needed to call those specific functions). They are harmless.
% Now you should have cbw_prototype_file.m, and a bunch of intermediate files: cbw64_thunk*.*.
% To use the following code in your main program:
% if isdeployed
% % A deployed (compiled) application, must use a prototype file instead of a header file.
% % To create the prototype file you must use the loadlibrary mfilename option.
% % Use the prototype file in compiled code.
% % Create prototype file, mxproto.
% % hfile = fullfile(matlabroot,'extern','include','matrix.h');
% % loadlibrary('libmx',hfile,'mfilename','mxproto')
% % MATLAB creates the file, mxproto.m, in the current folder.
% loadlibrary('cbw64', @cbw_prototype_file)
% else
% % If running in the MATLAB development environment, you can use the .h file.
% loadlibrary(DLLFileName, hFileName);
% end
% Then when you compile your application, you have to add this prototype m-file with an -a option:
% mcc -m image_acquire.m -d 'D:\MATLAB\desired output folder' -a 'D:\Matlab\work\the source code folder\cbw_prototype_file.m'
