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mexEvalString (C)

Execute MATLAB command in caller workspace

C Syntax

#include "mex.h"
int mexEvalString(const char *command);



To write MEX functions using modern C++ features and the MATLAB Data API for C++, see Write C++ Functions Callable from MATLAB (MEX Files).

Call mexEvalString to invoke a MATLAB® command in the workspace of the caller.

mexEvalString and mexCallMATLAB both execute MATLAB commands. Use mexCallMATLAB for returning results (left side arguments) back to the MEX function. The mexEvalString function does not return values to the MEX function.

All arguments that appear to the right of an equal sign in the command string must be current variables of the caller workspace. Do not use MATLAB function names for variable names. Common variable names that conflict with function names include i, j, mode, char, size, or path. To determine whether a particular name is associated with a MATLAB function, use the which function. For more information, see Variable Names.

Input Arguments

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Name of the MATLAB command to execute, specified as const char*. The function supports UTF-8 characters.

Output Arguments

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The function returns 0 if successful, and 1 if an error occurs.

Error Handling

If command detects an error, then MATLAB returns control to the MEX function and mexEvalString returns 1. To trap errors, use the mexEvalStringWithTrap function.


See these examples in matlabroot/extern/examples/mex:

Version History

Introduced before R2006a

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