use dll in matlab

To use a dll in matlab, you can use the built-in loadlibrary function. Here's an example:

main.m
% Load the dll
loadlibrary('mydll.dll', 'myheader.h');

% Call a function from the dll
calllib('mydll', 'my_function', arg1, arg2);

% Unload the dll
unloadlibrary('mydll');
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In the first line, loadlibrary is used to load the dll file and its corresponding header file. The second line calls a function named my_function from the loaded dll with arguments arg1 and arg2. Finally, the third line unloads the dll.

Note that you will need to replace mydll.dll and myheader.h with your own dll and header file names, and my_function with the name of the function you want to call from the dll.