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<H2><A NAME="_tapi2_display"></A>Display</H2>
<P>TAPI provides access to a phone's display. The display is modeled as an alphanumeric area with rows and columns. A phone's device capabilities indicate the size of a phone's display as the number of rows and the number of columns. Both these numbers are zero if the phone device does not have a display. Use <A HREF="func2_4htl.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func2_4htl.htm"><B>phoneSetDisplay</B></A> to write information to the display of an open phone device, and <A HREF="func2_4uk9.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/func2_4uk9.htm"><B>phoneGetDisplay</B></A> to retrieve the current contents of a phone's display. </P>
<P>When the display of a phone device is changed, a <A HREF="msgs_3f8l.htm" tppabs="http://msdn.microsoft.com/library/psdk/tapi22/msgs_3f8l.htm">PHONE_STATE</A> message is sent to the application function to notify the application about the state change. Parameters to this message provide an indication of the change. </P>
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