1<html><head> 2 <title>Metakit sample code - CatRecv</title> 3</head><body bgcolor=white> 4 5<font face=Helvetica size=3> 6 7<!--begin--> 8<h2><img src="e4app.gif" alt="App Icon" border=0 align=left> 9Metakit sample code - CatRecv</h2><br clear=left> 10 11<p>This application is a simple TCP/IP server based on Winsock. </p> 12 13<p><b>What it does</b>: When CatRecv is started, is enters a loop waiting 14for the CatSend client application to connect. Each new connection sets 15up its own window to displays the contents of a catalog tree sent by CatSend. 16You can examine the catalog tree and verify that it actually contains what 17the DisCat sample program previously saved on file. </p> 18 19<p><b>What it illustrates</b>: CatRecv is pretty neat. Apart from illustrating 20how to transfer a complex Metakit data structure over a network connection, 21it shows off the new tree and list controls now available in Windows 95 22with MFC 4.2, and it demonstrates how to design a little TCP/IP network 23server. The catalog window uses an Explorer-like tree interface to allow 24you to easily examine a catalog tree structure, and it didn't even take 25a lot of work to create it in C++. Since this is mainly intended as a demonstration 26of the use of Metakit, some more fancy user-interface features, such as 27sortable file lists and splitter views were not included, although this 28is probably quite easy to add. </p> 29 30<p><b>How to use it</b>: As it is, CatRecv only makes sense in combination 31with CatSend and DisCat. To try it out, you should first create a catalog 32file with DisCat which you can then pick up with CatSend. Note that like 33any typical client-server application, the CatRecv server application must 34be running before using CatSend to open a connection. Whenever a new connection 35is opened and a catalog object is received, CatRecv will open a new window 36with the contents of that catalog. </p> 37 38<p>This sample application uses a fixed TCP/IP port for its communication, 39but you can change the default port number to any value you like in the 40opening dialog. Just make sure to use the same port number in CatRecv, 41or you won't be able to connect. </p> 42 43<p><b>Known problems</b>: None, but since CatRecv uses both the new Windows 44common controls and Winsock, you can only run this application on Windows 4595, and you need to have a correctly installed version of the TCP/IP protocol 46stack (such as the one that comes with Windows 95 itself). </p> 47 48<p>You do not need an active network connection or any network hardware, 49since every TCP/IP installation can select local communication by using 50"localhost" as a host name (i.e. IP address 127.0.0.1). If you 51obtained this package from Internet via FTP, then you should be all set, 52since FTP access implies that you have a properly working TCP/IP configuration. 53</p> 54 55<p><b>Files in EXAMPLES\CATRECV</b>: </p> 56 57<p>CATRECV.H, CATRECV.CPP - Main MFC application code 58<br>CATRECV.MAK, CATRECV.MDP - MSVC 4.2 project makefiles for Win32 59<br>CATRECV.RC - Application resources 60<br>MYDLG.H, MYDLG.CPP - Opening dialog 61<br>RESOURCE.H - Resource symbol definitions 62<br>STDAFX.H, STDAFX.CPP - Used for precompiled headers 63<br>TREEDLG.H, TREEDLG.CPP - Contains the interesting pieces of this application 64 65<br>RES\*.* - Application resources </p> 66<!--end--> 67 68<center><p><hr size=1> 69|| 70 <a href="index.html" target="_top">Roadmap</a> 71 <a href="classes.html">Class Index</a> 72 <a href="samples.html">Sample Index</a> 73 || 74 <a href="intro.html">Introduction</a> 75 <a href="tips.html">Tips and Tricks</a> 76 || 77 78</center> 79</font> 80 81</body></html> 82
