Control response of mexCallMATLAB to errors
C Syntax
#include "mex.h"
void mexSetTrapFlag(int trap_flag);
Arguments
trap_flag
Control flag. Currently, the only legal values are
0
|
On error, control returns to the MATLAB prompt.
|
1
|
On error, control returns to your MEX-file.
|
Description
Call mexSetTrapFlag to control MATLAB's response to errors in mexCallMATLAB.
If you do not call mexSetTrapFlag, then whenever MATLAB detects an error in a call to mexCallMATLAB, MATLAB automatically terminates the MEX-file and returns control to the MATLAB prompt. Calling mexSetTrapFlag with trap_flag set to 0 is equivalent to not calling mexSetTrapFlag at all.
If you call mexSetTrapFlag and set the trap_flag to 1, then whenever MATLAB detects an error in a call to mexCallMATLAB, MATLAB does not automatically terminate the MEX-file. Rather, MATLAB returns control to the line in the MEX-file immediately following the call to mexCallMATLAB. The MEX-file is then responsible for taking an appropriate response to the error.
Example
See mexsettrapflag.c in the mex subdirectory of the examples directory.
See Also
mexAtExit, mexErrMsgTxt
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