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    <p>If you are making a library, you don't have a <code>WinMain</code>, you have a <a href="http://msdn.microsoft.com/en-us/library/ms682583%28v=vs.85%29.aspx" rel="nofollow"><code>DllMain</code></a> for dynamic libraries, or nothing for static libraries.</p> <p>In your case, you'd need to <a href="http://msdn.microsoft.com/en-us/library/a90k134d%28v=vs.80%29.aspx" rel="nofollow">export</a> all the classes functionality from your dll, then in any apps that use your library, you'd include the headers of your project and link to the <code>.lib</code> of the library, then have this in your app where you need the GUI functionality:</p> <pre><code>nApplication::Application app( hInstance, nCmdShow ); return app.Run( ); </code></pre> <p>Of course this ignores all the side details like registering event callbacks and setup along those lines, however <a href="http://qt.nokia.com/downloads/sdk-windows-cpp" rel="nofollow">Qt</a> is free and open source, you you might want to look into that before reinventing the wheel, or to help make your own wheel a little rounder.</p>
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    1. COI have two threads on the Qt form addressing this issue, the members there say that WinMain is "included" in by linking to Qts DLL similar to the MFC. For example, see the last few posts here, http://developer.qt.nokia.com/forums/viewthread/8908/#51775. I am still a bit confused as I am working through the source. This is my first open source project that I am working on trying to understand. This is my main motive for doing what I am doing.
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      1. USMatthew Hoggan
    2. CO@Matthew: Qt works a little differently, as its built for multiplatform UI dev: it uses `main` for the program entry point (which is in your code), but on widows it will create its own pseudo '`WinMain`'(though it in fact it need not, it merely needs to ensure no console is created if none requested)requested)
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    3. COI now have two conflicting explanations. I know that #/link /SUBSYSTEM:WINDOWS /ENTRY:mainCRTStartup inside nmake Makefile allows you specify the entry point to be main( ) in a non-console application. However when you set up you WndClassEx you need an hInstance which is not provided if you use main. There is no other way to get a Window created. Also if you look through the source at Qt you see that WinMain actually calls your main function. So main is NOT the entry point to the program, it is just a convenince to non Windows Programmers. This is not so in linux which is called as the entry.
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