LockIt Internal Class (Windows Embedded CE 6.0)

1/6/2010

This internal helper class handles locking and unlocking.

LockIt(
  _DERIVED_* p
);

Parameters

• p
  Pointer to the derived object.

Return Values

None.

Remarks

The constructor method locks the object, and the destructor method unlocks the object. To lock the object from inside your derived class, declare a local variable of type LockIt, as shown in the following example.

{
    LockIt lck(static_cast<_DERIVED_ *>(this)); // Locks the object.
} // lck goes out of scope, object is unlocked.

The methods in IMediaObjectImpl handle locking, so in most cases the derived class does not need to lock the object.

Requirements

See Also

Reference

IMediaObjectImpl Class Template
DMO Reference
DMO Base Class Reference