Currently, I create a new project by VS2008 wizard, the initInstance() method looks like

bool AppDelegate::initInstance()
{
    bool bRet = false;
    do 
    {
        // Initialize OpenGLView instance, that release by CCDirector when application terminate.
        // The HelloWorld is designed as HVGA.
        CCEGLView * pMainWnd = new CCEGLView();
        CC_BREAK_IF(! pMainWnd
            || ! pMainWnd->Create(TEXT("NewProject"), 320, 480));

        bRet = true;
    } while (0);
    return bRet;
}

This file is in the “Classes” folder. If develop copy it to different platform, e.g. ios, they had to write codes to init ios in AppDelete::initInstance() method.

Don’t make me think, do it by the wizard.
You can add multi-platforms’ init code in this method. Another choice is to refactor CCXEGLView, so the code in AppDelete::initInstance can init different platforms.

In one word, make AppDeletegate.cpp portbale, without any modifications by our developer.