HDC CreateDC(lpDriverName,lpDeviceName,lpOutput,lpInitData)
This function creates a device context for the specified device. The lpDriverName, lpDeviceName, and lpOutput parameters specify the device driver, device name, and physical output medium (file or port), respectively.
| Parameter | Type/Description | |
| lpDriverName | LPSTR Points to a null-terminated character string that specifies the DOS filename (without extension) of the device driver (for example, EpsonÒ). | |
| lpDeviceName | LPSTR Points to a null-terminated character string that specifies the name of the specific device to be supported (for example, Epson FX-80). The lpDeviceName parameter is used if the module supports more than one device. | |
| lpOutput | LPSTR Points to a null-terminated character string that specifies the DOS file or device name for the physical output medium (file or output port). | |
| lpInitData | LPDEVMODE Points to a DEVMODE data structure containing device-specific initialization data for the device driver. The ExtDeviceMode retrieves this structure filled in for a given device. The lpInitData parameter must be NULL if the device driver is to use the default initialization (if any) specified by the user through the Control Panel. |
The return value identifies a device context for the specified device if the function is successful. Otherwise, it is NULL.
DOS device names follow DOS conventions; an ending colon (:) is recommended, but optional. Windows strips the terminating colon so that a device name ending with a colon is mapped to the same port as the same name without a colon. The driver and port names must not contain leading or trailing spaces.