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Location: e32std.h
Link against: euser.lib

Class TFindPhysicalDevice

TFindPhysicalDevice

Support

Supported from 5.0

Description

Searches for PDD factory objects by pattern matching against the names of (Kernel side) PDD factory objects.

A PDD factory object is an instance of a DPhysicalDevice derived class.

The match pattern can be set into this object at construction; it can also be changed at any time after construction by using TFindHandleBase::Find().

After construction, call TFindPhysicalDevice::Next() repeatedly to find successive PDD factory objects whose names match the current pattern. A successful call to TFindPhysicalDevice::Next() means that a matching PDD factory object has been found.

The name of a PDD factory object is set by its Install() member function as part of the construction process.

Derivation

TFindHandleBaseBase class for searching for global Kernel objects
TFindPhysicalDeviceSearches for PDD factory objects by pattern matching against the names of (Kernel side) PDD factory objects

Defined in TFindPhysicalDevice:
Next(), TFindPhysicalDevice(), TFindPhysicalDevice()

Inherited from TFindHandleBase:
Find(), Handle()

See also:


Construction and destruction


TFindPhysicalDevice()

TFindPhysicalDevice();

Description

Constructs this object with a default match pattern.

The default match pattern, as implemented by the base class, is the single character "*". A new match pattern can be set after construction by calling TFindHandleBase::Find().


TFindPhysicalDevice()

TFindPhysicalDevice(const TDesC& aMatch);

Description

Constructs this object with a specified match pattern.

A new match pattern can be set after construction by calling the TFindHandleBase::Find().

Parameters

const TDesC& aMatch

The match pattern.

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Find next matching PDD factory object


Next()

TInt Next(TFullName& aResult);

Description

Returns the full name of the next PDD factory object which matches the match pattern.

Parameters

TFullName& aResult

A reference to a TBuf descriptor with a defined maximum length. If a matching PDD factory object is found, its full name is set into this descriptor. If no matching PDD factory object is found, the descriptor length is set to zero.

Return value

TInt

KErrNone if a matching PDD factory object is found; KErrNotFound otherwise.