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Application Priority
Conflicts can arise if multiple applications open the same line device for the
same media mode. These conflicts are resolved with a priority scheme by which
the user assigns relative priorities to the applications. This is usually done
through a Control Panel utility or a Preferences menu in a telephonic
application. Note the following points about this mechanism:
- Only the highest priority application for a given media mode ever receives
ownership (unsolicited) of a call of that media mode.
- Although ownership is usually received when an inbound call first arrives or
when a call is handed off, any application (including a lower priority one) can
later acquire ownership by using the function lineGetNewCalls or lineGetConfRelatedCalls.
The user can assign relative priorities to the modules (the applications and
the DLLs) that use TAPI. The resulting configuration information is stored in
the registry.
For in-depth information about the way applications receive calls in a
multi-application environment, see Multiple-Application Programming.
Related Links
Software for Delphi and C++ Builder developers
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Software for Visual Basic 6 developers
Delphi Tips&Tricks
MegaDetailed.NET
More Online Helps
Win32 Programmer's Reference (win32.hlp)
Win32 Multimedia Programmer's Reference (mmedia.hlp)
OLE Programmer's Reference (ole.hlp)
Microsoft Windows Pen API Programmer's Reference (penapi.hlp)
Microsoft Windows Sockets 2 Reference (sock2.hlp)
Unix Manual Pages
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