The PROVIDOR_INFO_1 structure identifies a print provider.
typedef struct _PROVIDOR_INFO_1 { // pi1
LPTSTR pName;
LPTSTR pEnvironment ;
LPTSTR pDLLName ;
} PROVIDOR_INFO_1;
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Unsupported.
Header: Declared in winspool.h.
Unicode: Defined as Unicode and ANSI structures.
Printing and Print Spooler Overview, Printing and Print Spooler Structures, MONITOR_INFO_2