INT 2F - MS Windows - VIWD - 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 = 38DAh (virtual device ID for VIWD 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 #02711) 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 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. in current mode SeeAlso: AX=1684h"DEVICE 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.",INT 20"Windows" (Table 02711) Call VIWD.VXD entry point with: DX = function number 0000h ??? Return: CF clear AX = ??? 0004h ??? Return: CF clear DX = 0000h 0006h Return: CF clear 000Ah AX = ??? Return: CF clear if successful CF set on error 000Ch 000Dh 000Eh Return: CF clear 000Fh Return: CF clear 0010h 0011h 0015h Return: CF clear if successful AX = ??? CF set on error AX = ??? DX = 0000h 0016h 0017h Return: CF clear if successful AX = ??? CF set on error AX = ??? DX = 0000h 0018h ??? CX = ??? Return: CF clear if successful AX = 0000h CF set on error else Return: CF set SeeAlso: #02708,#02712