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- #ifndef screenblanker_H
- #define screenblanker_H
-
- /* C header file for ScreenBlanker
- * written by DefMod (Sep 7 1994) on Wed Sep 7 21:19:30 1994
- * Copyright © Acorn Computers Ltd, 1994
- */
-
- /*************************************************************************
- * This source file was written by Acorn Computers Limited. It is part *
- * of the OSLib library for writing applications for RISC OS. It may be *
- * used freely in the creation of programs for RISC OS. *
- *************************************************************************/
-
- #ifndef types_H
- #include "types.h"
- #endif
-
- #ifndef os_H
- #include "os.h"
- #endif
-
- /**********************************
- * SWI names and SWI reason codes *
- **********************************/
- #undef ScreenBlanker_Control
- #define ScreenBlanker_Control 0x43100
- #undef XScreenBlanker_Control
- #define XScreenBlanker_Control 0x63100
- #undef Service_ScreenBlanked
- #define Service_ScreenBlanked 0x7A
- #undef Service_ScreenRestored
- #define Service_ScreenRestored 0x7B
-
- /*************************
- * Function declarations *
- *************************/
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- /*************************************************************
- * NOTE: The following functions provide direct access to *
- * the SWI's noted in the function description. *
- * Please read the relevant PRM section for more *
- * information on their input/output parameters. *
- *************************************************************/
-
- /* ------------------------------------------------------------------------
- * Function: service_screen_blanked()
- *
- * Description: Screen blanked by screen blanker
- *
- * Other notes: Calls SWI 0x30 with R1 = 0x7A.
- */
-
- extern os_error *xservice_screen_blanked (void);
- extern void service_screen_blanked (void);
-
- /* ------------------------------------------------------------------------
- * Function: service_screen_restored()
- *
- * Description: Screen restored by screen blanker
- *
- * Input: x - value of R0 on entry
- *
- * Other notes: Calls SWI 0x30 with R1 = 0x7B.
- */
-
- extern os_error *xservice_screen_restored (int x);
- extern void service_screen_restored (int x);
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif
-