DosGetMachineMode

This call returns the current mode of the processor, whether the processor is running in the DOS mode or the OS/2 mode. This allows an application to determine whether a dynamic link call is valid or not.

Syntax
DosGetMachineMode (MachineMode)

Parameters

 * MachineMode (PBYTE) - output: Address of the value to indicate the current processor mode. This value may be:
 * 0 - DOS mode
 * 1 - OS/2 mode.

Return Code

 * rc (USHORT) - return:Return code description is:
 * 0 NO_ERROR

Remarks
All dynamic link calls are available to an application if the MachineMode value indicates the program is in OS/2 mode. This method provides a self-tailoring application that allows the application to adapt to the execution environment by limiting or enhancing the functions it provides.

If the MachineMode value indicates the program is in DOS mode, the application is limited to a subset of dynamic link calls listed in the Family API.

C

 * 1) define INCL_DOSQUEUES

USHORT rc = DosGetMachineMode(MachineMode); PBYTE  MachineMode;   /* Processor mode (returned) */ USHORT rc;            /* return code /*/ 

MASM
 EXTRN DosGetMachineMode:FAR INCL_DOSQUEUES     EQU 1

PUSH@ BYTE    MachineMode   ;Processor mode (returned) CALL  DosGetMachineMode

Returns WORD 