app.h

浙江大学的悟空嵌入式系统模拟器

        // (such as wxMGL). This method should be called from wxApp:OnInitGui
    virtual bool SetDisplayMode(const wxDisplayModeInfo& WXUNUSED(info)) { return TRUE; }

        // set use of best visual flag (see below)
    void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; }
    bool GetUseBestVisual() const { return m_useBestVisual; }

        // set/get printing mode: see wxPRINT_XXX constants.
        //
        // default behaviour is the normal one for Unix: always use PostScript
        // printing.
    virtual void SetPrintMode(int WXUNUSED(mode)) { }
    int GetPrintMode() const { return wxPRINT_POSTSCRIPT; }

    // called by toolkit-specific code to set the app status: active (we have
    // focus) or not and also the last window which had focus before we were
    // deactivated
    virtual void SetActive(bool isActive, wxWindow *lastFocus);
#endif // wxUSE_GUI

    // this method allows to filter all the events processed by the program, so
    // you should try to return quickly from it to avoid slowing down the
    // program to the crawl
    //
    // return value should be -1 to continue with the normal event processing,
    // or TRUE or FALSE to stop further processing and pretend that the event
    // had been already processed or won't be processed at all, respectively
    virtual int FilterEvent(wxEvent& event);

    // debugging support
    // -----------------

    // this function is called when an assert failure occurs, the base class
    // version does the normal processing (i.e. shows the usual assert failure
    // dialog box)
    //
    // the arguments are the place where the assert occured, the text of the
    // assert itself and the user-specified message
#ifdef __WXDEBUG__
    virtual void OnAssert(const wxChar *file,
                          int line,
                          const wxChar *cond,
                          const wxChar *msg);
#endif // __WXDEBUG__

    // check that the wxBuildOptions object (constructed in the application
    // itself, usually the one from IMPLEMENT_APP() macro) matches the build
    // options of the library and abort if it doesn't
    static bool CheckBuildOptions(const wxBuildOptions& buildOptions);

    // deprecated functions, please updae your code to not use them!
    // -------------------------------------------------------------

#if WXWIN_COMPATIBILITY_2_2
    // used by obsolete wxDebugMsg only
    void SetWantDebugOutput( bool flag ) { m_wantDebugOutput = flag; }
    bool GetWantDebugOutput() const { return m_wantDebugOutput; }

    // TRUE if the application wants to get debug output
    bool m_wantDebugOutput;
#endif // WXWIN_COMPATIBILITY_2_2

    // implementation only from now on
    // -------------------------------

    // helpers for dynamic wxApp construction
    static void SetInitializerFunction(wxAppInitializerFunction fn)
        { m_appInitFn = fn; }
    static wxAppInitializerFunction GetInitializerFunction()
        { return m_appInitFn; }

    // process all events in the wxPendingEvents list
    virtual void ProcessPendingEvents();

    // access to the command line arguments
    int      argc;
    wxChar **argv;

protected:
    // function used for dynamic wxApp creation
    static wxAppInitializerFunction m_appInitFn;

    // application info (must be set from the user code)
    wxString m_vendorName,      // vendor name (ACME Inc)
             m_appName,         // app name
             m_className;       // class name

#if wxUSE_GUI
    // the main top level window - may be NULL
    wxWindow *m_topWindow;

    // if Yes, exit the main loop when the last top level window is deleted, if
    // No don't do it and if Later -- only do it once we reach our OnRun()
    //
    // the explanation for using this strange scheme is given in appcmn.cpp
    enum
    {
        Later = -1,
        No,
        Yes
    } m_exitOnFrameDelete;

    // TRUE if the apps whats to use the best visual on systems where
    // more than one are available (Sun, SGI, XFree86 4.0 ?)
    bool m_useBestVisual;

    // does any of our windows has focus?
    bool m_isActive;
#endif // wxUSE_GUI
};

// ----------------------------------------------------------------------------
// now include the declaration of the real class
// ----------------------------------------------------------------------------

#if wxUSE_GUI
    #if defined(__WXMSW__)
        #include "wx/msw/app.h"
    #elif defined(__WXMOTIF__)
        #include "wx/motif/app.h"
    #elif defined(__WXMGL__)
        #include "wx/mgl/app.h"
    #elif defined(__WXGTK__)
        #include "wx/gtk/app.h"
    #elif defined(__WXX11__)
        #include "wx/x11/app.h"
    #elif defined(__WXMAC__)
        #include "wx/mac/app.h"
    #elif defined(__WXPM__)
        #include "wx/os2/app.h"
    #elif defined(__WXSTUBS__)
        #include "wx/stubs/app.h"
    #endif
#else // !GUI
    // can't use typedef because wxApp forward declared as a class
    class WXDLLEXPORT wxApp : public wxAppBase
    {
    };
#endif // GUI/!GUI

// ----------------------------------------------------------------------------
// the global data
// ----------------------------------------------------------------------------

// the one and only application object - use of wxTheApp in application code
// is discouraged, consider using DECLARE_APP() after which you may call
// wxGetApp() which will return the object of the correct type (i.e. MyApp and
// not wxApp)
WXDLLEXPORT_DATA(extern wxApp*) wxTheApp;

// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------

// event loop related functions only work in GUI programs
// ------------------------------------------------------

// Force an exit from main loop
extern void WXDLLEXPORT wxExit();

// Yield to other apps/messages
extern bool WXDLLEXPORT wxYield();

// Yield to other apps/messages
extern void WXDLLEXPORT wxWakeUpIdle();

// Post a message to the given eventhandler which will be processed during the
// next event loop iteration
inline void wxPostEvent(wxEvtHandler *dest, wxEvent& event)
{
    wxCHECK_RET( dest, wxT("need an object to post event to in wxPostEvent") );

#if wxUSE_GUI
    dest->AddPendingEvent(event);
#else
    dest->ProcessEvent(event);
#endif // wxUSE_GUI
}

// console applications may avoid using DECLARE_APP and IMPLEMENT_APP macros
// and call these functions instead at the program startup and termination
// -------------------------------------------------------------------------

#if !wxUSE_GUI

// initialize the library (may be called as many times as needed, but each
// call to wxInitialize() must be matched by wxUninitialize())
extern bool WXDLLEXPORT wxInitialize();

// clean up - the library can't be used any more after the last call to
// wxUninitialize()
extern void WXDLLEXPORT wxUninitialize();

// create an object of this class on stack to initialize/cleanup thel ibrary
// automatically
class WXDLLEXPORT wxInitializer
{
public:
    // initialize the library
    wxInitializer() { m_ok = wxInitialize(); }

    // has the initialization been successful? (explicit test)
    bool IsOk() const { return m_ok; }

    // has the initialization been successful? (implicit test)
    operator bool() const { return m_ok; }

    // dtor only does clean up if we initialized the library properly
    ~wxInitializer() { if ( m_ok ) wxUninitialize(); }

private:
    bool m_ok;
};

#endif // !wxUSE_GUI

// ----------------------------------------------------------------------------
// macros for dynamic creation of the application object
// ----------------------------------------------------------------------------

// Having a global instance of this class allows wxApp to be aware of the app
// creator function. wxApp can then call this function to create a new app
// object. Convoluted, but necessary.

class WXDLLEXPORT wxAppInitializer
{
public:
    wxAppInitializer(wxAppInitializerFunction fn)
        { wxApp::SetInitializerFunction(fn); }
};

// Here's a macro you can use if your compiler really, really wants main() to
// be in your main program (e.g. hello.cpp). Now IMPLEMENT_APP should add this
// code if required.

#if !wxUSE_GUI || defined(__WXMOTIF__) || defined(__WXGTK__) || defined(__WXPM__) || defined(__WXMGL__)
    #define IMPLEMENT_WXWIN_MAIN \
        extern int wxEntry( int argc, char **argv ); \
        int main(int argc, char **argv) { return wxEntry(argc, argv); }
#elif defined(__WXMAC__) && defined(__UNIX__)
    // wxMac seems to have a specific wxEntry prototype
    #define IMPLEMENT_WXWIN_MAIN \
        extern int wxEntry( int argc, char **argv, bool enterLoop = TRUE ); \
        int main(int argc, char **argv) { return wxEntry(argc, argv); }
#elif defined(__WXMSW__) && defined(WXUSINGDLL)
    // NT defines APIENTRY, 3.x not
    #if !defined(WXAPIENTRY)
        #define WXAPIENTRY WXFAR wxSTDCALL
    #endif

    #include <windows.h>
    #include "wx/msw/winundef.h"

    #define IMPLEMENT_WXWIN_MAIN \
        extern "C" int WXAPIENTRY WinMain(HINSTANCE hInstance,\
                                          HINSTANCE hPrevInstance,\
                                          LPSTR m_lpCmdLine, int nCmdShow)\
        {\
            return wxEntry((WXHINSTANCE) hInstance,\
                           (WXHINSTANCE) hPrevInstance,\
                           m_lpCmdLine, nCmdShow);\
        }
#else
    #define IMPLEMENT_WXWIN_MAIN
#endif

#ifdef __WXUNIVERSAL__
    #include "wx/univ/theme.h"

    #define IMPLEMENT_WX_THEME_SUPPORT \
        WX_USE_THEME(win32); \
        WX_USE_THEME(gtk);
#else
    #define IMPLEMENT_WX_THEME_SUPPORT
#endif

// Use this macro if you want to define your own main() or WinMain() function
// and call wxEntry() from there.
#define IMPLEMENT_APP_NO_MAIN(appname)                   \
    wxApp *wxCreateApp()                                 \
    {                                                    \
        wxApp::CheckBuildOptions(wxBuildOptions());      \
        return new appname;                              \
    }                                                    \
    wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \
    appname& wxGetApp() { return *(appname *)wxTheApp; }

// Same as IMPLEMENT_APP() normally but doesn't include themes support in
// wxUniversal builds
#define IMPLEMENT_APP_NO_THEMES(appname)    \
    IMPLEMENT_APP_NO_MAIN(appname)          \
    IMPLEMENT_WXWIN_MAIN

// Use this macro exactly once, the argument is the name of the wxApp-derived
// class which is the class of your application.
#define IMPLEMENT_APP(appname)              \
    IMPLEMENT_APP_NO_THEMES(appname)        \
    IMPLEMENT_WX_THEME_SUPPORT

// this macro can be used multiple times and just allows you to use wxGetApp()
// function
#define DECLARE_APP(appname) extern appname& wxGetApp();

#endif
    // _WX_APP_H_BASE_