DosError (FAPI)
This call allows an OS/2 process to receive hard error notification without generating a hard error signal.
Contents
Syntax
DosError (Flag)
Parameters
- Flags (USHORT) - input
- Bit field, defined in the following example (the unused high-order bits are reserved and must be set to zero).
- 15-2 Reserved, set to zero.
- 1
- 0 = Enable exception popups.
- 1 = Disable exception popups.
- 0
- 0 = Disable hard error popups (fail requests).
- 1 = Enable hard error popups.
Return Code
- rc (USHORT) - return
- Return code descriptions are:
- 0 NO_ERROR
- 87 ERROR_INVALID_PARAMETER
Remarks
DosError allows an OS/2 process to disable user notification if a program (or untrapped numeric processor) exception occurs. If end user notification is disabled, and if one of these exceptions occurs, the process is terminated.
Hard errors generated under a process that has issued a DosError call are failed, and the appropriate error code is returned. The default situation is both hard error pop-ups and exception pop-ups are enabled, if DosError is not issued.
Family API Considerations
Some options operate differently in the DOS mode than in the OS/2 mode. Therefore, the following restriction applies to DosError when coding for the DOS mode:
- For Flag, a value of 0000 causes all subsequent INT 24s to be failed until a subsequent call with a value of 1 is issued.
- Note
- Since INT 24 is not issued in DOS mode, this call has no effect when running in DOS mode.
Bindings
C
#define INCL_DOSMISC USHORT rc = DosError(Flag); USHORT Flags; /* Action flags */ USHORT rc; /* return code */
MASM
EXTRN DosError:FAR INCL_DOSMISC EQU 1 PUSH WORD Flags ;Action flags CALL DosError Returns WORD
Example Code
This example disables hard error popups and exception popups, then re-enables them.
#define INCL_DOSQUEUES #define ENABLE_EXCEPTION 0 #define DISABLE_EXCEPTION 2 #define ENABLE_HARDERROR 1 #define DISABLE_HARDERROR 0 #define DISABLE_ERRORPOPUPS DISABLE_EXCEPTION | DISABLE_HARDERROR #define ENABLE_ERRORPOPUPS ENABLE_EXCEPTION | ENABLE_HARDERROR USHORT rc; rc = DosError(DISABLE_ERRORPOPUPS); /* Action flag */ rc = DosError(ENABLE_ERRORPOPUPS); /* Action flag */