INT 2F - MS Windows - DOSMGR - GET API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. ENTRY POINT AX = 1684h BX = 0015h (virtual device ID for DOSMGR device) (see #02642) ES:DI = 0000h:0000h Return: ES:DI -> VxDA virtual device driver for Windows 3.x or 95. So called because nearly all of the Windows 3.0 drivers had names of the form "VdeviceD". See also device driver. API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. entry point (see #02656,#01282) 0000h:0000h if the VxDA virtual device driver for Windows 3.x or 95. So called because nearly all of the Windows 3.0 drivers had names of the form "VdeviceD". See also device driver. does not support an API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. SeeAlso: #01282 at INT 20"Windows" (Table 02656) Call DOSMGR entry point with: AX = 0000h get DOSMGR version Return: CF clear AX = version (AH = major, AL = minor) AX = 0001h set critical focus Return: CF clear AX = 0002h crash current virtual machine Return: never Note: displays message box stating that "application has been stopped by the DOSMGR device" AX = 0003h enter critical section Note: this function assumes that the code for INT 2A/AX=8001h and INT 2A/AX=8002h have been modified for Windows AX = 0004h get VMsee Virtual Machine ID byte Return: CF clear if successful ES:DI -> VMsee Virtual Machine ID byte CF set on error Note: this function fails if the INT 2A modifications have not yet been applied AX = 0005h inform Windows of possible media change BL = drive number (00h=A:) Return: CF clear if successful CF set on error SeeAlso: #01282 at INT 20"Windows",#02655,#02657