Used with the IG_ISIS_install_driver_get_ascii, IG_ISIS_install_driver_get_long, IG_ISIS_install_driver_set_ascii, and IG_ISIS_install_driver_set_long functions.
| IG_ISIS_INSTDRIV_SCANNER | Get or set the name of the scanner being installed. |
| IG_ISIS_INSTDRIV_REQUEST | Get this value when IG_ISIS_install_driver_step returned IG_ISIS_INSTDRIV_NEEDINFO to find out what type of user interaction is needed. |
| IG_ISIS_INSTDRIV_TITLE | Get the title to use on dialogs during user interaction. |
| IG_ISIS_INSTDRIV_PARENTWINDOW | Get or set the parent window for dialogs. |
| IG_ISIS_INSTDRIV_SILENT | Get or set whether to install the driver silently. |
| IG_ISIS_INSTDRIV_DEFAULTSCANNER | Get or set whether this scanner is going to be set up as the default scanner. |
| IG_ISIS_INSTDRIV_ANSWERED | Get or set whether this NEEDINFO has been answered. |
| IG_ISIS_INSTDRIV_YESNO_MSG | Get the question to ask for the current YESNO request. |
| IG_ISIS_INSTDRIV_YESNO_DEFAULT | Return the default answer for the current YESNO request. |
| IG_ISIS_INSTDRIV_YESNO_ANSWER | Get or set the answer for the current YESNO request. |
| IG_ISIS_INSTDRIV_SHOWMSG_MSG | Get the message to display for the current SHOWMSG request. |
| IG_ISIS_INSTDRIV_ASKSTRING_MSG | Get the question to ask for the current ASKSTRING request. |
| IG_ISIS_INSTDRIV_ASKSTRING_DEFAULT | Get the default answer for the current ASKSTRING request. |
| IG_ISIS_INSTDRIV_ASKSTRING_NEEDDIR | Returns a value that specifies if the current ASKSTRING request needs a directory name as the answer. |
| IG_ISIS_INSTDRIV_ASKSTRING_ANSWER | Get or set the answer to the current ASKSTRING request. |