|
Managing Audio Data Blocks by Polling
In addition to using a callback function, you can poll the dwFlags member of a WAVEHDR or MIDIHDR structure to determine when an audio device is finished with a data block.
There are times when it's better to poll dwFlags rather than wait for a window to receive messages from the drivers. For
example, immediately after you call the waveOutReset function to release pending data blocks, you can poll to be sure that the
data blocks are indeed done before proceeding to call the waveOutUnprepareHeader function and free the memory for the data block.
Related Links
Software for Delphi and C++ Builder developers
Software for Visual Studio .NET developers
Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET
TMS Scripter Studio Pro components for Delphi/C++Builder
More Online Helps
Win32 Programmer's Reference (win32.hlp)
OLE Programmer's Reference (ole.hlp)
Microsoft Windows Pen API Programmer's Reference (penapi.hlp)
Microsoft Windows Sockets 2 Reference (sock2.hlp)
Microsoft Windows Telephony API (TAPI) Programmer's Reference (tapi.hlp)
Unix Manual Pages
|
