dmi_pointing_device
Synopsis
#include <opendmi/entity/pointing-device.h>
typedef struct dmi_pointing_device {
dmi_pointing_device_type_t type;
dmi_pointing_device_iface_t interface;
unsigned short button_count;
} dmi_pointing_device_t;Description
The dmi_pointing_device_t structure holds the decoded built-in pointing
device structure (type 21) of SMBIOS: the type, interface and number of
buttons of the pointing device built into the system, such as the touch pad of
a laptop. The structure being present does not mean that the device is in use.
The structure is returned by dmi_entity_info for the structures of type
DMI_TYPE(pointing_device), and lives as long as the context it has been
decoded in.
Fields
type-
Type of the pointing device, see
dmi_pointing_device_type. interface-
Interface the pointing device is connected through, see
dmi_pointing_device_iface. button_count-
Number of buttons of the pointing device, for example 3 for a three-button mouse.
Examples
dmi_registry_t *registry = dmi_get_registry(context);
dmi_entity_t *entity = dmi_registry_lookup_first(registry,
DMI_TYPE(pointing_device), false);
dmi_pointing_device_t *device = dmi_entity_info(entity,
DMI_TYPE(pointing_device));
if (device != nullptr)
printf("%s (%s), %u buttons\n",
dmi_pointing_device_type_name(device->type),
dmi_pointing_device_iface_name(device->interface),
device->button_count);