This is part of Family API which allow to create dual-os version of program runs under OS/2 and DOS

Note: This is legacy API call. It is recommended to use 32-bit equivalent

MouGetNumButtons

This call returns the number of buttons supported on the installed mouse driver.

Syntax

MouGetNumButtons (NumberOfButtons, DeviceHandle)

Parameters

NumberOfButtons (PUSHORT) - output : Address of the number of physical buttons. The return values for the number of buttons supported are:

1 - One mouse button

2 - Two mouse buttons

3 - Three mouse buttons.

DeviceHandle (HMOU) - input : Handle of the mouse device from a previous MouOpen.

Return Code

rc (USHORT) - return:Return code descriptions are:

385 ERROR_MOUSE_NO_DEVICE

466 ERROR_MOU_DETACHED

501 ERROR_MOUSE_NO_CONSOLE

505 ERROR_MOU_EXTENDED_SG

Bindings

C

#define INCL_MOU USHORT rc = MouGetNumButtons(NumberOfButtons, DeviceHandle); PUSHORT NumberOfButtons; /* Number of mouse buttons */ HMOU DeviceHandle; /* Mouse device handle */ USHORT rc; /* return code */

MASM

EXTRN MouGetNumButtons:FAR INCL_MOU EQU 1 PUSH@ WORD NumberOfButtons ;Number of mouse buttons PUSH WORD DeviceHandle ;Mouse device handle CALL MouGetNumButtons Returns WORD

Example

HMOU DeviceHandle; ... MouOpen(0L, &DeviceHandle); MouGetNumButtons(&NumberOfButtons, DeviceHandle);