WPD_COMMAND_OBJECT_PROPERTIES_GET_SUPPORTED Command
The WPD_COMMAND_OBJECT_PROPERTIES_GET_SUPPORTED command retrieves the properties supported by an object.
Command Category
WPD_CATEGORY_OBJECT_PROPERTIES
Parameters
The driver expects the following parameter.
| Parameter | VarType | Description |
|---|---|---|
| WPD_PROPERTY_OBJECT_PROPERTIES_OBJECT_ID | VT_LPWSTR | Required. The ID of the object that contains the requested properties. |
Return Value
The driver should return the following results.
| Result | VarType | Description |
|---|---|---|
| WPD_PROPERTY_OBJECT_PROPERTIES_PROPERTY_KEYS | VT_UNKNOWN | Required. An IPortableDeviceKeyCollection interface that specifies all of the supported properties. |
| WPD_PROPERTY_COMMON_HRESULT | VT_ERROR | Required. An HRESULT value that indicates overall success or failure. Possible result values include Windows Portable Devices error codes. If the caller makes an invalid request, the driver should return HRESULT_FROM_WIN32(ERROR_NOT_SUPPORTED) but is otherwise not required to return any other result value. |
| WPD_PROPERTY_COMMON_DRIVER_ERROR_CODE | VT_UI4 | Optional. A driver-specific error code. This is typically used only for driver testing, or if the driver, device, and client are all designed together. |
Requirements
| Requirement | Value |
|---|---|
| Header |
|