MouGetNumButtons (OS/2 1.x)

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:

Value        Definition
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

Example Code

C Binding

#define INCL_MOU

USHORT  rc = MouGetNumButtons(NumberOfButtons, DeviceHandle);

PUSHORT          NumberOfButtons;  /* Number of mouse buttons */
HMOU             DeviceHandle;     /* Mouse device handle */

USHORT           rc;               /* return code */

MASM Binding

EXTRN  MouGetNumButtons:FAR
INCL_MOU            EQU 1

PUSH@  WORD    NumberOfButtons ;Number of mouse buttons
PUSH   WORD    DeviceHandle    ;Mouse device handle
CALL   MouGetNumButtons

Returns WORD