7.2. Declaring Fax Data Structures

You must declare the DF_IOTT, DF_ASCIIDATA and DF_UIO structures to be global or static in your application. Do not modify the contents of the structures until after the completion of the fax session.

In asynchronous mode, the fax library needs to repeatedly access the DF_IOTT, DF_ASCIIDATA and DF_UIO table entries during the fax transmission even though fx_sendfax( ) returns control to the application after initiating the fax transmission.

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