Initializing help system before first use

XPRS_ge_getlasterror

Purpose
Returns the last error encountered during a call to the Xpress global environment.
Topic area
Global Environment
Synopsis
int XPRS_CC XPRS_ge_getlasterror(int* p_msgcode, char* msg, int maxbytes, int* p_nbytes);
Arguments
p_msgcode 
Memory location in which the error code will be returned. Can be NULL if not required.
msg 
A character buffer of size maxbytes in which the last error message relating to the global environment will be returned. If the message is longer than maxbytes then it will be truncated. The message will always be terminated by a NUL character (provided maxbytes is bigger than 0).
maxbytes 
The size of the character buffer msg.
p_nbytes 
Memory location in which the minimum required size of the buffer to hold the full error string will be returned. This minimum size includes the terminating NUL character. Can be NULL if not required.
Example
The following shows how this function might be used in error checking: 
char* cbuf;
int cbuflen;
if (XPRS_ge_addcbmsghandler(myfunc,NULL,0)!=0) {
  XPRS_ge_getlasterror(NULL,NULL,0,&cbuflen);
  cbuf = malloc(cbuflen);
  XPRS_ge_getlasterror(NULL, cbuf, cbuflen, NULL);
  printf("ERROR from Xpress global environment: %s\n", cbuf);
}
Related topics
XPRS_ge_addcbmsghandler.

Parent Topic Console and Library Functions

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