typedef struct _DRIVER_UPGRADE_INFO_1 {
LPTSTR pPrinterName;
LPTSTR pOldDriverDirectory;
} DRIVER_UPGRADE_INFO_1, *PDRIVER_UPGRADE_INFO_1;
The spooler passes DRIVER_UPGRADE_INFO_1 as the pDriverUpgradeInfo parameter to a printer driver’s DrvUpgradePrinter function.