Printer-control functions retrieve information about a printer and modify its initialization state. The printer driver, rather than GDI itself, provides these functions. The following list briefly describes each printer-control function:
| Function | Description | |
| DeviceCapabilities | Retrieves capabilities of a printer device driver. | |
| DeviceMode | Sets the current printing modes for a device by prompting the user with a dialog box. | |
| ExtDeviceMode | Retrieves or modifies device initialization infor-mation for a given printer driver or displays a driver-supplied dialog box for configuring the driver. |