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Internal CRT global variable. The command line.
Syntax
char * _acmdln;
wchar_t * _wcmdln;
#ifdef WPRFLAG
#define _tcmdln _wcmdln
#else
#define _tcmdln _acmdln
Remarks
These CRT internal variables store the complete command line. They're exposed in the exported symbols for the CRT, but aren't intended for use in your code. _acmdln stores the data as a character string. _wcmdln stores the data as a wide character string. _tcmdln can be defined as either _acmdln or _wcmdln, depending on which is appropriate.