CMsg Class (Compact 2013)
3/26/2014
CMsg Class
The CMsgThread class provides support for a worker thread to which requests can be posted asynchronously instead of sent directly.
The CAMThread class provides a worker thread to which single requests can be sent.
Only one client can make a request at a time, and the client blocks until the worker thread has completed the request. By contrast, the CMsgThread class provides a worker thread to which any number of requests can be posted.
The requests (in the form of a CMsg object) are queued and executed in order, asynchronously.
No reply or return value is received.
Data Members
Member |
Description |
|---|---|
dwFlags |
Flag parameter to the request code. |
lpParam |
Data required by the worker thread as parameter or return values. This data should not be stack-based, because it is referenced some time after completing the queuing operation. |
pEvent |
Event object that a worker thread can signal to indicate the completion of the operation. |
uMsg |
Request code that is defined by the client of the thread class and understood by the overridden worker thread function. |
Member Functions
Member function |
Description |
|---|---|
Constructs a CMsg object. |
Requirements
Header |
dshow.h, |
Library |
ole32.lib, |