Win32 Classes (Windows CE 5.0)

Send Feedback

DirectShow implements several classes to handle Win32 threads, events, and critical sections. These include the following classes.

The following illustration shows these classes.


CAMEvent handles a Windows CE event as a C++ object. The methods in this class allow events to be put into the signaled state or reset to a nonsignaled state, and also allow a caller to block until an event is signaled. Events can also be cast to handles and passed to the WaitForMultipleObjects function.

CCritSec handles a Win32 critical section as a C++ object to provide intraprocess synchronization. Methods of this class allow you to create, lock, and unlock a critical section.

CAutoLock holds a critical section (a CCritSec object) for the scope of a block or function. The critical section is locked in the constructor and unlocked in the destructor.

CAMThread provides an abstract worker thread class enabling creation, synchronization, and communication with a worker thread.

CMsgThread provides support for a worker thread to which requests can be posted asynchronously instead of being sent directly. Messages, in the form of a CMsg object, can be posted to a CMsgThread object.

CMsg creates an object containing a message to be passed to a CMsgThread object.

Send Feedback on this topic to the authors

Feedback FAQs

© 2006 Microsoft Corporation. All rights reserved.