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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
<PRE> #define INCL_MOU
USHORT rc = MouGetNumButtons(NumberOfButtons, DeviceHandle);
PUSHORT NumberOfButtons; /* Number of mouse buttons */ HMOU DeviceHandle; /* Mouse device handle */
USHORT rc; /* return code */ </PRE>
MASM
<PRE> EXTRN MouGetNumButtons:FAR INCL_MOU EQU 1
PUSH@ WORD NumberOfButtons ;Number of mouse buttons PUSH WORD DeviceHandle ;Mouse device handle CALL MouGetNumButtons
Returns WORD </PRE>
Example
HMOU DeviceHandle; ... MouOpen(0L, &DeviceHandle); MouGetNumButtons(&NumberOfButtons, DeviceHandle);