MouGetNumButtons

Returns the number of buttons supported on the installed mouse device driver.

Syntax

MouGetNumButtons(NumberOfButtons, DeviceHandle);

Parameters

NumberOfButtons (PULONG) - output

Number of mouse buttons.

Address where the number of physical buttons is to be returned.

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

Mouse device handle.

Reserved. Set to 0.

Return Code

rc (APIRET) - returns

MouGetNumButtons returns one of the following values:

• 0 NO_ERROR
• 466 ERROR_MOU_DETACHED
• 501 ERROR_MOUSE_NO_CONSOLE

Sample

#define INCL_MOU
#include <os2.h>

PULONG    NumberOfButtons;  /*  Number of mouse buttons. */
HMOU      DeviceHandle;     /*  Mouse device handle. */
APIRET    rc;               /*  Return code. */

rc = MouGetNumButtons(NumberOfButtons, DeviceHandle);