MouGetNumButtons

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

 MouGetNumButtons (NumberOfButtons, DeviceHandle)

• 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.

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

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

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

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