PCSX2 Documentation/The PCSX2 Program Flow: Difference between revisions

You can see here that the Pcsx2App class is an extension of the wxAppWithHelpers class. WxWidgets applications are defined as classes, which are instantiated into an object when we start the program. Pcsx2App contains methods that wxWidgets is going to call upon at various times. So what gets called when we fire up Pcsx2App? That would be the OnInit() method which is defined in  There's all kinds of crazy stuff happening here, but what we really care about is this line:

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if( m_UseGUI ) OpenMainFrame();

In addition to Application classes, there are also Frame classes. So when we call the OpenMainFrame function, what happens? Take a look at this code:

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void Pcsx2App::OpenMainFrame()

Here we're creating an instance of the MainEmuFrame class. That class contains members for all the cool GUI elements, buttons, menus, stuff like that. So let's take a step further. Suppose we want to boot up a game. When we select Boot DVD in the pcsx2 menus, we are calling upon this function here:

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void MainEmuFrame::_DoBootCdvd()

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