NOTIFY_HANDLE CService::RegisterDeviceHandleNotification(HANDLE DeviceHandle)
{
NOTIFY_HANDLE handle = NULL;
#ifdef UNIVERSAL
CM_NOTIFY_FILTER filter;
CONFIGRET cr;
::ZeroMemory(&filter, sizeof(filter));
filter.cbSize = sizeof(filter);
filter.FilterType = CM_NOTIFY_FILTER_TYPE_DEVICEHANDLE;
filter.u.DeviceHandle.hTarget = DeviceHandle;
cr = CM_Register_Notification(&filter, this,
CService::DeviceNotificationCallback, &handle);
if (cr != CR_SUCCESS)
{
SetLastError(CM_MapCrToWin32Err(cr, ERROR_NOT_SUPPORTED));
}
#else // UNIVERSAL
DEV_BROADCAST_HANDLE filter;
ZeroMemory(&filter, sizeof(filter));
filter.dbch_size = sizeof(filter);
filter.dbch_devicetype = DBT_DEVTYP_HANDLE;
filter.dbch_handle = DeviceHandle;
handle = ::RegisterDeviceNotification(m_StatusHandle, &filter,
DEVICE_NOTIFY_SERVICE_HANDLE);
#endif // UNIVERSAL
return handle;
}
DWORD
GetDevicePath(
_In_ LPGUID InterfaceGuid,
_Out_ LPWSTR * DevicePath
)
{
CONFIGRET cmRet = CR_SUCCESS;
ULONG interfaceListSize = 0;
*DevicePath = NULL;
cmRet = CM_Get_Device_Interface_List_Size_Ex(&interfaceListSize, InterfaceGuid, 0, CM_GET_DEVICE_INTERFACE_LIST_PRESENT, NULL);
if (cmRet != CR_SUCCESS) {
goto exit;
}
*DevicePath = (LPWSTR)LocalAlloc(LMEM_ZEROINIT, interfaceListSize * sizeof((*DevicePath)[0]));
if (NULL == *DevicePath) {
cmRet = CR_OUT_OF_MEMORY;
goto exit;
}
cmRet = CM_Get_Device_Interface_List_Ex(InterfaceGuid, 0, *DevicePath, interfaceListSize, CM_GET_DEVICE_INTERFACE_LIST_PRESENT, NULL);
exit:
if (cmRet != CR_SUCCESS) {
if (NULL != *DevicePath) {
LocalFree(*DevicePath);
*DevicePath = NULL;
}
}
return CM_MapCrToWin32Err(cmRet, ERROR_UNIDENTIFIED_ERROR);
}
NOTIFY_HANDLE CService::RegisterDeviceInterfaceNotification()
{
NOTIFY_HANDLE handle = NULL;
#ifdef UNIVERSAL
CM_NOTIFY_FILTER filter;
CONFIGRET cr;
::ZeroMemory(&filter, sizeof(filter));
filter.cbSize = sizeof(filter);
filter.FilterType = CM_NOTIFY_FILTER_TYPE_DEVICEINTERFACE;
filter.u.DeviceInterface.ClassGuid = GUID_DEVINTERFACE_BALLOON;
cr = CM_Register_Notification(&filter, this,
CService::DeviceNotificationCallback, &handle);
if (cr != CR_SUCCESS)
{
SetLastError(CM_MapCrToWin32Err(cr, ERROR_NOT_SUPPORTED));
}
#else // UNIVERSAL
DEV_BROADCAST_DEVICEINTERFACE filter;
ZeroMemory(&filter, sizeof(filter));
filter.dbcc_size = sizeof(filter);
filter.dbcc_devicetype = DBT_DEVTYP_DEVICEINTERFACE;
filter.dbcc_classguid = GUID_DEVINTERFACE_BALLOON;
handle = ::RegisterDeviceNotification(m_StatusHandle, &filter,
DEVICE_NOTIFY_SERVICE_HANDLE);
#endif // UNIVERSAL
return handle;
}
