PHW_DEVICE_EXTENSION HwDeviceExtension,
      PVIDEO_CURSOR_POSITION CursorPosition,
      ULONG CursorPositionSize

Routine Description:

    This routine verifies that the requested cursor position is within
    the row and column bounds of the current mode and font. If valid, then
    it sets the row and column of the cursor.


    HwDeviceExtension - Pointer to the miniport driver's device extension.

    CursorPosition - Pointer to the structure containing the cursor position.

    CursorPositionSize - Length of the input buffer supplied by the user.

Return Value:

    NO_ERROR - information returned successfully

    ERROR_INSUFFICIENT_BUFFER - input buffer not large enough for input data

    ERROR_INVALID_PARAMETER - invalid video mode