Using the gateway client 
              library
              The rest of this chapter requires you have the developer annual 
              subscription. 
              To help developers to create more complex outbound applications 
              such as Voicent AutoReminder and Voicent BroadcastByPhone, Voicent 
              offers a MFC based gateway client library. In fact, these two 
              applications are built on top of the client library. 
              In the rest of this chapter, we'll enhance the callnow 
              sample such that the call message includes additional message 
              typed in from the application GUI. 
              
                
              Click here to download the callnow sample. 
              1. Compile and test the downloaded sample
              First, you need to set the correct include directory and 
              library directory of the gateway client library for the sample 
              project. 
              Client library include file is 
              vgClient.h and library is 
              vgateclient.lib. 
              The following sections explain the usage of the client library 
              of the sample code. 
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