problem in running a m-file

Hello

I have a m-file(comdll.m) with following functions:

tic

loadlibrary('comdll','comheader');

calllib('comdll','initialize',1,1);

unloadlibrary('comdll');

toc

when I run this m-file i see in command window:

>> comdll

Mex file entry point is missing. Please check the (case-sensitive)

spelling of mexFunction (for C MEX-files), or the (case-insensitive)

spelling of MEXFUNCTION (for FORTRAN MEX-files).

??? Invalid MEX-file 'C:\...comdll.dll': .

what is the problem?

Answer 1

[Kaustubha Govind]

You should probably rename your .m file (comdll.m) so that it doesn't clash with commdll.dll. If you type which commdll in the MATLAB command window, you should see that it is picking up the DLL over your MATLAB script. This is because in older versions of MATLAB, MEX functions used to have .DLL extensions on Windows.

Answer 2

[Jan]

"comdll" is the name of the DLL and of the M-file? I'd try to use different names at first. It seems like Matlab tries to execute the DLL as Mex-function.

Answer 3

[Mahnaz]

thanks

i renamed the m-file and it doesn't have any problem.