RDevice Class Reference
| class RDevice : public RHandleBase |
User side handle to an LDD factory object, an instance of a DLogicalDevice derived class.
The LDD factory object is a Kernel side object which is constructed on the Kernel heap when the logical device is opened using User::LoadLogicalDevice(). The handle allows the User side to get information about the logical device.
To use the device, a thread must create and use an instance of an RBusLogicalChannel derived class.
Member Functions Documentation
GetCaps(TDes8 &)
| IMPORT_C void | GetCaps | ( | TDes8 & | aDes | ) | const |
Gets the device capabilities.
Parameters
| TDes8 & aDes | A descriptor into which capability's information is to be written. |
IsAvailable(TInt, const TDesC *, const TDesC8 *)
Checks if a specified unit number, additional info and a specific PDD is supported.
Parameters
| TInt aUnit | The requested unit number. |
| const TDesC * aPhysicalDevice | The requested PDD name. |
| const TDesC8 * anInfo | The additional information. |
Open(const TFindLogicalDevice &, TOwnerType)
Opens a handle to an LDD factory object found using a TFindLogicalDevice object.
A TFindLogicalDevice object is used to find all LDD factory objects whose full names match a specified pattern.
Parameters
| const TFindLogicalDevice & aFind | A reference to the object which is used to find the LDD factory object. |
| TOwnerType aType = EOwnerProcess | An enumeration whose enumerators define the ownership of this LDD factory object handle. If not explicitly specified, EOwnerProcess is taken as default. |
Open(const TDesC &, TOwnerType)
Opens a handle to an LDD factory object by name.
Parameters
| const TDesC & aName | The name of the LDD factory object to be opened. |
| TOwnerType aType = EOwnerProcess | An enumeration whose enumerators define the ownership of this LDD factory object handle. |
QueryVersionSupported(const TVersion &)
Checks if a device supports a particular version.
Parameters
| const TVersion & aVer | The requested device version. |
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