Intel Extensible Firmware Interface - Manual (Page 306)

Extensible Firmware Interface Specification
10-12 12/01/02 Version 1.10
SIMPLE_TEXT_OUTPUT.OutputString()
Summary
Writes a Unicode string to the output device.
Prototype
EFI_STATUS
(EFIAPI *EFI_TEXT_STRING) (
IN SIMPLE_TEXT_OUTPUT_INTERFACE *This,
IN CHAR16 *String
);
Parameters
This A pointer to the SIMPLE_TEXT_OUTPUT_INTERFACE
instance. Type SIMPLE_TEXT_OUTPUT_INTERFACE is
defined in the “Related Definitions” section of Section 10.3.
String The Null-terminated Unicode string to be displayed on the
output device(s). All output devices must also support the
Unicode drawing characters defined in “Related Definitions.”
Related Definitions
//*******************************************************
// UNICODE DRAWING CHARACTERS
//*******************************************************
#define BOXDRAW_HORIZONTAL 0x2500
#define BOXDRAW_VERTICAL 0x2502
#define BOXDRAW_DOWN_RIGHT 0x250c
#define BOXDRAW_DOWN_LEFT 0x2510
#define BOXDRAW_UP_RIGHT 0x2514
#define BOXDRAW_UP_LEFT 0x2518
#define BOXDRAW_VERTICAL_RIGHT 0x251c
#define BOXDRAW_VERTICAL_LEFT 0x2524
#define BOXDRAW_DOWN_HORIZONTAL 0x252c
#define BOXDRAW_UP_HORIZONTAL 0x2534
#define BOXDRAW_VERTICAL_HORIZONTAL 0x253c