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wxWidgets/include/wx/app.h
Vadim Zeitlin 01fac4b748 Delete windows before application on session end in wxMSW 
When WM_ENDSESSION was received by the application, the wxApp object
itself was shut down by calling OnExit() on it before all the TLWs were
destroyed, which could be completely unexpected as during normal
shutdown the order of events is exactly the reverse.

In practice, this resulted in crashes in any application whose main
window close event handler or dtor touched wxTheApp in any way (e.g. to
save any configuration in the global wxConfig object destroyed by
wxApp::OnExit()).

See #9590 (sorry for missing the point before, ATS).
2017-08-15 00:41:16 +02:00

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/////////////////////////////////////////////////////////////////////////////
// Name: wx/app.h
// Purpose: wxAppBase class and macros used for declaration of wxApp
// derived class in the user code
// Author: Julian Smart
// Modified by:
// Created: 01/02/97
// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_APP_H_BASE_
#define _WX_APP_H_BASE_
// ----------------------------------------------------------------------------
// headers we have to include here
// ----------------------------------------------------------------------------
#include "wx/event.h" // for the base class
#include "wx/eventfilter.h" // (and another one)
#include "wx/build.h"
#include "wx/cmdargs.h" // for wxCmdLineArgsArray used by wxApp::argv
#include "wx/init.h" // we must declare wxEntry()
#include "wx/intl.h" // for wxLayoutDirection
#include "wx/log.h" // for wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD()
class WXDLLIMPEXP_FWD_BASE wxAppConsole;
class WXDLLIMPEXP_FWD_BASE wxAppTraits;
class WXDLLIMPEXP_FWD_BASE wxCmdLineParser;
class WXDLLIMPEXP_FWD_BASE wxEventLoopBase;
class WXDLLIMPEXP_FWD_BASE wxMessageOutput;
#if wxUSE_GUI
struct WXDLLIMPEXP_FWD_CORE wxVideoMode;
class WXDLLIMPEXP_FWD_CORE wxWindow;
#endif
// this macro should be used in any main() or equivalent functions defined in wx
#define wxDISABLE_DEBUG_SUPPORT() \
wxDISABLE_ASSERTS_IN_RELEASE_BUILD(); \
wxDISABLE_DEBUG_LOGGING_IN_RELEASE_BUILD()
// ----------------------------------------------------------------------------
// typedefs
// ----------------------------------------------------------------------------
// the type of the function used to create a wxApp object on program start up
typedef wxAppConsole* (*wxAppInitializerFunction)();
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
enum
{
wxPRINT_WINDOWS = 1,
wxPRINT_POSTSCRIPT = 2
};
// ----------------------------------------------------------------------------
// global variables
// ----------------------------------------------------------------------------
// use of this list is strongly deprecated, use wxApp ScheduleForDestruction()
// and IsScheduledForDestruction() methods instead of this list directly, it
// is here for compatibility purposes only
extern WXDLLIMPEXP_DATA_BASE(wxList) wxPendingDelete;
// ----------------------------------------------------------------------------
// wxAppConsoleBase: wxApp for non-GUI applications
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_BASE wxAppConsoleBase : public wxEvtHandler,
public wxEventFilter
{
public:
// ctor and dtor
wxAppConsoleBase();
virtual ~wxAppConsoleBase();
// the virtual functions which may/must be overridden in the derived class
// -----------------------------------------------------------------------
// This is the very first function called for a newly created wxApp object,
// it is used by the library to do the global initialization. If, for some
// reason, you must override it (instead of just overriding OnInit(), as
// usual, for app-specific initializations), do not forget to call the base
// class version!
virtual bool Initialize(int& argc, wxChar **argv);
// This gives wxCocoa a chance to call OnInit() with a memory pool in place
virtual bool CallOnInit() { return OnInit(); }
// Called before OnRun(), this is a good place to do initialization -- if
// anything fails, return false from here to prevent the program from
// continuing. The command line is normally parsed here, call the base
// class OnInit() to do it.
virtual bool OnInit();
// This is the replacement for the normal main(): all program work should
// be done here. When OnRun() returns, the programs starts shutting down.
virtual int OnRun();
// Called before the first events are handled, called from within MainLoop()
virtual void OnLaunched();
// This is called by wxEventLoopBase::SetActive(): you should put the code
// which needs an active event loop here.
// Note that this function is called whenever an event loop is activated;
// you may want to use wxEventLoopBase::IsMain() to perform initialization
// specific for the app's main event loop.
virtual void OnEventLoopEnter(wxEventLoopBase* WXUNUSED(loop)) {}
// This is only called if OnInit() returned true so it's a good place to do
// any cleanup matching the initializations done there.
virtual int OnExit();
// This is called by wxEventLoopBase::OnExit() for each event loop which
// is exited.
virtual void OnEventLoopExit(wxEventLoopBase* WXUNUSED(loop)) {}
// This is the very last function called on wxApp object before it is
// destroyed. If you override it (instead of overriding OnExit() as usual)
// do not forget to call the base class version!
virtual void CleanUp();
// Called when a fatal exception occurs, this function should take care not
// to do anything which might provoke a nested exception! It may be
// overridden if you wish to react somehow in non-default way (core dump
// under Unix, application crash under Windows) to fatal program errors,
// however extreme care should be taken if you don't want this function to
// crash.
virtual void OnFatalException() { }
// Called from wxExit() function, should terminate the application a.s.a.p.
virtual void Exit();
// application info: name, description, vendor
// -------------------------------------------
// NB: all these should be set by the application itself, there are no
// reasonable default except for the application name which is taken to
// be argv[0]
// set/get the application name
wxString GetAppName() const;
void SetAppName(const wxString& name) { m_appName = name; }
// set/get the application display name: the display name is the name
// shown to the user in titles, reports, etc while the app name is
// used for paths, config, and other places the user doesn't see
//
// by default the display name is the same as app name or a capitalized
// version of the program if app name was not set neither but it's
// usually better to set it explicitly to something nicer
wxString GetAppDisplayName() const;
void SetAppDisplayName(const wxString& name) { m_appDisplayName = name; }
// set/get the app class name
wxString GetClassName() const { return m_className; }
void SetClassName(const wxString& name) { m_className = name; }
// set/get the vendor name
const wxString& GetVendorName() const { return m_vendorName; }
void SetVendorName(const wxString& name) { m_vendorName = name; }
// set/get the vendor display name: the display name is shown
// in titles/reports/dialogs to the user, while the vendor name
// is used in some areas such as wxConfig, wxStandardPaths, etc
const wxString& GetVendorDisplayName() const
{
return m_vendorDisplayName.empty() ? GetVendorName()
: m_vendorDisplayName;
}
void SetVendorDisplayName(const wxString& name)
{
m_vendorDisplayName = name;
}
// cmd line parsing stuff
// ----------------------
// all of these methods may be overridden in the derived class to
// customize the command line parsing (by default only a few standard
// options are handled)
//
// you also need to call wxApp::OnInit() from YourApp::OnInit() for all
// this to work
#if wxUSE_CMDLINE_PARSER
// this one is called from OnInit() to add all supported options
// to the given parser (don't forget to call the base class version if you
// override it!)
virtual void OnInitCmdLine(wxCmdLineParser& parser);
// called after successfully parsing the command line, return true
// to continue and false to exit (don't forget to call the base class
// version if you override it!)
virtual bool OnCmdLineParsed(wxCmdLineParser& parser);
// called if "--help" option was specified, return true to continue
// and false to exit
virtual bool OnCmdLineHelp(wxCmdLineParser& parser);
// called if incorrect command line options were given, return
// false to abort and true to continue
virtual bool OnCmdLineError(wxCmdLineParser& parser);
#endif // wxUSE_CMDLINE_PARSER
// miscellaneous customization functions
// -------------------------------------
// create the app traits object to which we delegate for everything which
// either should be configurable by the user (then he can change the
// default behaviour simply by overriding CreateTraits() and returning his
// own traits object) or which is GUI/console dependent as then wxAppTraits
// allows us to abstract the differences behind the common facade
wxAppTraits *GetTraits();
// this function provides safer access to traits object than
// wxTheApp->GetTraits() during startup or termination when the global
// application object itself may be unavailable
//
// of course, it still returns NULL in this case and the caller must check
// for it
static wxAppTraits *GetTraitsIfExists();
// Return some valid traits object.
//
// This method checks if we have wxTheApp and returns its traits if it does
// exist and the traits are non-NULL, similarly to GetTraitsIfExists(), but
// falls back to wxConsoleAppTraits to ensure that it always returns
// something valid.
static wxAppTraits& GetValidTraits();
// returns the main event loop instance, i.e. the event loop which is started
// by OnRun() and which dispatches all events sent from the native toolkit
// to the application (except when new event loops are temporarily set-up).
// The returned value maybe NULL. Put initialization code which needs a
// non-NULL main event loop into OnEventLoopEnter().
wxEventLoopBase* GetMainLoop() const
{ return m_mainLoop; }
// This function sets the C locale to the default locale for the current
// environment. It is advised to call this to ensure that the underlying
// toolkit uses the locale in which the numbers and monetary amounts are
// shown in the format expected by user and so on.
//
// Notice that this does _not_ change the global C++ locale, you need to do
// it explicitly if you want.
//
// Finally, notice that while this function is virtual, it is not supposed
// to be overridden outside of the library itself.
virtual void SetCLocale();
// event processing functions
// --------------------------
// Implement the inherited wxEventFilter method but just return -1 from it
// to indicate that default processing should take place.
virtual int FilterEvent(wxEvent& event) wxOVERRIDE;
// return true if we're running event loop, i.e. if the events can
// (already) be dispatched
static bool IsMainLoopRunning();
#if wxUSE_EXCEPTIONS
// execute the functor to handle the given event
//
// this is a generalization of HandleEvent() below and the base class
// implementation of CallEventHandler() still calls HandleEvent() for
// compatibility for functors which are just wxEventFunctions (i.e. methods
// of wxEvtHandler)
virtual void CallEventHandler(wxEvtHandler *handler,
wxEventFunctor& functor,
wxEvent& event) const;
// call the specified handler on the given object with the given event
//
// this method only exists to allow catching the exceptions thrown by any
// event handler, it would lead to an extra (useless) virtual function call
// if the exceptions were not used, so it doesn't even exist in that case
virtual void HandleEvent(wxEvtHandler *handler,
wxEventFunction func,
wxEvent& event) const;
// Called when an unhandled C++ exception occurs inside OnRun(): note that
// the main event loop has already terminated by now and the program will
// exit, if you need to really handle the exceptions you need to override
// OnExceptionInMainLoop()
virtual void OnUnhandledException();
// Function called if an uncaught exception is caught inside the main
// event loop: it may return true to continue running the event loop or
// false to stop it. If this function rethrows the exception, as it does by
// default, simply because there is no general way to handle exceptions,
// StoreCurrentException() will be called to store it because in any case
// the exception can't be allowed to escape.
virtual bool OnExceptionInMainLoop();
// This function can be overridden to store the current exception, in view
// of rethrowing it later when RethrowStoredException() is called. If the
// exception was stored, return true. If the exception can't be stored,
// i.e. if this function returns false, the program will abort after
// calling OnUnhandledException().
//
// The default implementation of this function when using C++98 compiler
// just returns false, as there is no generic way to store an arbitrary
// exception in C++98 and each application must do it on its own for the
// exceptions it uses in its overridden version. When using C++11, the
// default implementation uses std::current_exception() and returns true,
// so it's normally not necessary to override this method when using C++11.
virtual bool StoreCurrentException();
// If StoreCurrentException() is overridden, this function should be
// overridden as well to rethrow the exceptions stored by it when the
// control gets back to our code, i.e. when it's safe to do it.
//
// The default version does nothing when using C++98 and uses
// std::rethrow_exception() in C++11.
virtual void RethrowStoredException();
#endif // wxUSE_EXCEPTIONS
// pending events
// --------------
// IMPORTANT: all these methods conceptually belong to wxEventLoopBase
// but for many reasons we need to allow queuing of events
// even when there's no event loop (e.g. in wxApp::OnInit);
// this feature is used e.g. to queue events on secondary threads
// or in wxPython to use wx.CallAfter before the GUI is initialized
// process all events in the m_handlersWithPendingEvents list -- it is necessary
// to call this function to process posted events. This happens during each
// event loop iteration in GUI mode but if there is no main loop, it may be
// also called directly.
virtual void ProcessPendingEvents();
// check if there are pending events on global pending event list
bool HasPendingEvents() const;
// temporary suspends processing of the pending events
void SuspendProcessingOfPendingEvents();
// resume processing of the pending events previously stopped because of a
// call to SuspendProcessingOfPendingEvents()
void ResumeProcessingOfPendingEvents();
// called by ~wxEvtHandler to (eventually) remove the handler from the list of
// the handlers with pending events
void RemovePendingEventHandler(wxEvtHandler* toRemove);
// adds an event handler to the list of the handlers with pending events
void AppendPendingEventHandler(wxEvtHandler* toAppend);
// moves the event handler from the list of the handlers with pending events
//to the list of the handlers with _delayed_ pending events
void DelayPendingEventHandler(wxEvtHandler* toDelay);
// deletes the current pending events
void DeletePendingEvents();
// delayed destruction
// -------------------
// If an object may have pending events for it, it shouldn't be deleted
// immediately as this would result in a crash when trying to handle these
// events: instead, it should be scheduled for destruction and really
// destroyed only after processing all pending events.
//
// Notice that this is only possible if we have a running event loop,
// otherwise the object is just deleted directly by ScheduleForDestruction()
// and IsScheduledForDestruction() always returns false.
// schedule the object for destruction in the near future
void ScheduleForDestruction(wxObject *object);
// return true if the object is scheduled for destruction
bool IsScheduledForDestruction(wxObject *object) const;
// wxEventLoop-related methods
// ---------------------------
// all these functions are forwarded to the corresponding methods of the
// currently active event loop -- and do nothing if there is none
virtual bool Pending();
virtual bool Dispatch();
virtual int MainLoop();
virtual void ExitMainLoop();
bool Yield(bool onlyIfNeeded = false);
virtual void WakeUpIdle();
// this method is called by the active event loop when there are no events
// to process
//
// by default it generates the idle events and if you override it in your
// derived class you should call the base class version to ensure that idle
// events are still sent out
virtual bool ProcessIdle();
// this virtual function is overridden in GUI wxApp to always return true
// as GUI applications always have an event loop -- but console ones may
// have it or not, so it simply returns true if already have an event loop
// running but false otherwise
virtual bool UsesEventLoop() const;
// 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 location of the failed assert (func may be empty
// if the compiler doesn't support C99 __FUNCTION__), the text of the
// assert itself and the user-specified message
virtual void OnAssertFailure(const wxChar *file,
int line,
const wxChar *func,
const wxChar *cond,
const wxChar *msg);
// old version of the function without func parameter, for compatibility
// only, override OnAssertFailure() in the new code
virtual void OnAssert(const wxChar *file,
int line,
const wxChar *cond,
const wxChar *msg);
// check that the wxBuildOptions object (constructed in the application
// itself, usually the one from wxIMPLEMENT_APP() macro) matches the build
// options of the library and abort if it doesn't
static bool CheckBuildOptions(const char *optionsSignature,
const char *componentName);
// implementation only from now on
// -------------------------------
// helpers for dynamic wxApp construction
static void SetInitializerFunction(wxAppInitializerFunction fn)
{ ms_appInitFn = fn; }
static wxAppInitializerFunction GetInitializerFunction()
{ return ms_appInitFn; }
// accessors for ms_appInstance field (external code might wish to modify
// it, this is why we provide a setter here as well, but you should really
// know what you're doing if you call it), wxTheApp is usually used instead
// of GetInstance()
static wxAppConsole *GetInstance() { return ms_appInstance; }
static void SetInstance(wxAppConsole *app) { ms_appInstance = app; }
// command line arguments (public for backwards compatibility)
int argc;
// this object is implicitly convertible to either "char**" (traditional
// type of argv parameter of main()) or to "wchar_t **" (for compatibility
// with Unicode build in previous wx versions and because the command line
// can, in pr
#if wxUSE_UNICODE
wxCmdLineArgsArray argv;
#else
char **argv;
#endif
protected:
// delete all objects in wxPendingDelete list
//
// called from ProcessPendingEvents()
void DeletePendingObjects();
// the function which creates the traits object when GetTraits() needs it
// for the first time
virtual wxAppTraits *CreateTraits();
// function used for dynamic wxApp creation
static wxAppInitializerFunction ms_appInitFn;
// the one and only global application object
static wxAppConsole *ms_appInstance;
// create main loop from AppTraits or return NULL if
// there is no main loop implementation
wxEventLoopBase *CreateMainLoop();
// application info (must be set from the user code)
wxString m_vendorName, // vendor name ("acme")
m_vendorDisplayName, // vendor display name (e.g. "ACME Inc")
m_appName, // app name ("myapp")
m_appDisplayName, // app display name ("My Application")
m_className; // class name
// the class defining the application behaviour, NULL initially and created
// by GetTraits() when first needed
wxAppTraits *m_traits;
// the main event loop of the application (may be NULL if the loop hasn't
// been started yet or has already terminated)
wxEventLoopBase *m_mainLoop;
// pending events management vars:
// the array of the handlers with pending events which needs to be processed
// inside ProcessPendingEvents()
wxEvtHandlerArray m_handlersWithPendingEvents;
// helper array used by ProcessPendingEvents() to store the event handlers
// which have pending events but of these events none can be processed right now
// (because of a call to wxEventLoop::YieldFor() which asked to selectively process
// pending events)
wxEvtHandlerArray m_handlersWithPendingDelayedEvents;
#if wxUSE_THREADS
// this critical section protects both the lists above
wxCriticalSection m_handlersWithPendingEventsLocker;
#endif
// flag modified by Suspend/ResumeProcessingOfPendingEvents()
bool m_bDoPendingEventProcessing;
friend class WXDLLIMPEXP_FWD_BASE wxEvtHandler;
// the application object is a singleton anyhow, there is no sense in
// copying it
wxDECLARE_NO_COPY_CLASS(wxAppConsoleBase);
};
#if defined(__UNIX__) && !defined(__WINDOWS__)
#include "wx/unix/app.h"
#else
// this has to be a class and not a typedef as we forward declare it
class wxAppConsole : public wxAppConsoleBase { };
#endif
// ----------------------------------------------------------------------------
// wxAppBase: the common part of wxApp implementations for all platforms
// ----------------------------------------------------------------------------
#if wxUSE_GUI
class WXDLLIMPEXP_CORE wxAppBase : public wxAppConsole
{
public:
wxAppBase();
virtual ~wxAppBase();
// the virtual functions which may/must be overridden in the derived class
// -----------------------------------------------------------------------
// very first initialization function
//
// Override: very rarely
virtual bool Initialize(int& argc, wxChar **argv) wxOVERRIDE;
// a platform-dependent version of OnInit(): the code here is likely to
// depend on the toolkit. default version does nothing.
//
// Override: rarely.
virtual bool OnInitGui();
// called to start program execution - the default version just enters
// the main GUI loop in which events are received and processed until
// the last window is not deleted (if GetExitOnFrameDelete) or
// ExitMainLoop() is called. In console mode programs, the execution
// of the program really starts here
//
// Override: rarely in GUI applications, always in console ones.
virtual int OnRun() wxOVERRIDE;
// a matching function for OnInit()
virtual int OnExit() wxOVERRIDE;
// very last clean up function
//
// Override: very rarely
virtual void CleanUp() wxOVERRIDE;
// the worker functions - usually not used directly by the user code
// -----------------------------------------------------------------
// safer alternatives to Yield(), using wxWindowDisabler
virtual bool SafeYield(wxWindow *win, bool onlyIfNeeded);
virtual bool SafeYieldFor(wxWindow *win, long eventsToProcess);
// this virtual function is called in the GUI mode when the application
// becomes idle and normally just sends wxIdleEvent to all interested
// parties
//
// it should return true if more idle events are needed, false if not
virtual bool ProcessIdle() wxOVERRIDE;
// override base class version: GUI apps always use an event loop
virtual bool UsesEventLoop() const wxOVERRIDE { return true; }
// top level window functions
// --------------------------
// return true if our app has focus
virtual bool IsActive() const { return m_isActive; }
// set the "main" top level window
void SetTopWindow(wxWindow *win) { m_topWindow = win; }
// return the "main" top level window (if it hadn't been set previously
// with SetTopWindow(), will return just some top level window and, if
// there are none, will return NULL)
virtual wxWindow *GetTopWindow() const;
// control the exit behaviour: by default, the program will exit the
// main loop (and so, usually, terminate) when the last top-level
// program window is deleted. Beware that if you disable this behaviour
// (with SetExitOnFrameDelete(false)), you'll have to call
// ExitMainLoop() explicitly from somewhere.
void SetExitOnFrameDelete(bool flag)
{ m_exitOnFrameDelete = flag ? Yes : No; }
bool GetExitOnFrameDelete() const
{ return m_exitOnFrameDelete == Yes; }
// display mode, visual, printing mode, ...
// ------------------------------------------------------------------------
// Get display mode that is used use. This is only used in framebuffer
// wxWin ports such as wxDFB.
virtual wxVideoMode GetDisplayMode() const;
// Set display mode to use. This is only used in framebuffer wxWin
// ports such as wxDFB. This method should be called from
// wxApp::OnInitGui
virtual bool SetDisplayMode(const wxVideoMode& WXUNUSED(info)) { return true; }
// set use of best visual flag (see below)
void SetUseBestVisual( bool flag, bool forceTrueColour = false )
{ m_useBestVisual = flag; m_forceTrueColour = forceTrueColour; }
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; }
// Return the layout direction for the current locale or wxLayout_Default
// if it's unknown
virtual wxLayoutDirection GetLayoutDirection() const;
// Change the theme used by the application, return true on success.
virtual bool SetNativeTheme(const wxString& WXUNUSED(theme)) { return false; }
// command line parsing (GUI-specific)
// ------------------------------------------------------------------------
#if wxUSE_CMDLINE_PARSER
virtual bool OnCmdLineParsed(wxCmdLineParser& parser) wxOVERRIDE;
virtual void OnInitCmdLine(wxCmdLineParser& parser) wxOVERRIDE;
#endif
// miscellaneous other stuff
// ------------------------------------------------------------------------
// 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);
protected:
// override base class method to use GUI traits
virtual wxAppTraits *CreateTraits() wxOVERRIDE;
// Helper method deleting all existing top level windows: this is used
// during the application shutdown.
void DeleteAllTLWs();
// 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 app wants to use the best visual on systems where
// more than one are available (Sun, SGI, XFree86 4.0 ?)
bool m_useBestVisual;
// force TrueColour just in case "best" isn't TrueColour
bool m_forceTrueColour;
// does any of our windows have focus?
bool m_isActive;
wxDECLARE_NO_COPY_CLASS(wxAppBase);
};
// ----------------------------------------------------------------------------
// now include the declaration of the real class
// ----------------------------------------------------------------------------
#if defined(__WXMSW__)
#include "wx/msw/app.h"
#elif defined(__WXMOTIF__)
#include "wx/motif/app.h"
#elif defined(__WXDFB__)
#include "wx/dfb/app.h"
#elif defined(__WXGTK20__)
#include "wx/gtk/app.h"
#elif defined(__WXGTK__)
#include "wx/gtk1/app.h"
#elif defined(__WXX11__)
#include "wx/x11/app.h"
#elif defined(__WXMAC__)
#include "wx/osx/app.h"
#elif defined(__WXQT__)
#include "wx/qt/app.h"
#endif
#else // !GUI
// wxApp is defined in core and we cannot define another one in wxBase,
// so use the preprocessor to allow using wxApp in console programs too
#define wxApp wxAppConsole
#endif // GUI/!GUI
// ----------------------------------------------------------------------------
// the global data
// ----------------------------------------------------------------------------
// for compatibility, we define this macro to access the global application
// object of type wxApp
//
// note that instead of using of wxTheApp in application code you should
// consider using wxDECLARE_APP() after which you may call wxGetApp() which will
// return the object of the correct type (i.e. MyApp and not wxApp)
//
// the cast is safe as in GUI build we only use wxApp, not wxAppConsole, and in
// console mode it does nothing at all
#define wxTheApp static_cast<wxApp*>(wxApp::GetInstance())
// ----------------------------------------------------------------------------
// global functions
// ----------------------------------------------------------------------------
// event loop related functions only work in GUI programs
// ------------------------------------------------------
// Force an exit from main loop
WXDLLIMPEXP_BASE void wxExit();
// avoid redeclaring this function here if it had been already declared by
// wx/utils.h, this results in warnings from g++ with -Wredundant-decls
#ifndef wx_YIELD_DECLARED
#define wx_YIELD_DECLARED
// Yield to other apps/messages
WXDLLIMPEXP_CORE bool wxYield();
#endif // wx_YIELD_DECLARED
// Yield to other apps/messages
WXDLLIMPEXP_BASE void wxWakeUpIdle();
// ----------------------------------------------------------------------------
// 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 WXDLLIMPEXP_BASE wxAppInitializer
{
public:
wxAppInitializer(wxAppInitializerFunction fn)
{ wxApp::SetInitializerFunction(fn); }
};
// the code below defines a wxIMPLEMENT_WXWIN_MAIN macro which you can use if
// your compiler really, really wants main() to be in your main program (e.g.
// hello.cpp). Now wxIMPLEMENT_APP should add this code if required.
// For compilers that support it, prefer to use wmain() and let the CRT parse
// the command line for us, for the others parse it ourselves under Windows to
// ensure that wxWidgets console applications accept arbitrary Unicode strings
// as command line parameters and not just those representable in the current
// locale (under Unix UTF-8, capable of representing any Unicode string, is
// almost always used and there is no way to retrieve the Unicode command line
// anyhow).
#if wxUSE_UNICODE && defined(__WINDOWS__)
#ifdef __VISUALC__
#define wxIMPLEMENT_WXWIN_MAIN_CONSOLE \
int wmain(int argc, wchar_t **argv) \
{ \
wxDISABLE_DEBUG_SUPPORT(); \
\
return wxEntry(argc, argv); \
}
#else // No wmain(), use main() but don't trust its arguments.
#define wxIMPLEMENT_WXWIN_MAIN_CONSOLE \
int main(int, char **) \
{ \
wxDISABLE_DEBUG_SUPPORT(); \
\
return wxEntry(); \
}
#endif
#else // Use standard main()
#define wxIMPLEMENT_WXWIN_MAIN_CONSOLE \
int main(int argc, char **argv) \
{ \
wxDISABLE_DEBUG_SUPPORT(); \
\
return wxEntry(argc, argv); \
}
#endif
// port-specific header could have defined it already in some special way
#ifndef wxIMPLEMENT_WXWIN_MAIN
#define wxIMPLEMENT_WXWIN_MAIN wxIMPLEMENT_WXWIN_MAIN_CONSOLE
#endif // defined(wxIMPLEMENT_WXWIN_MAIN)
#ifdef __WXUNIVERSAL__
#include "wx/univ/theme.h"
#ifdef wxUNIV_DEFAULT_THEME
#define wxIMPLEMENT_WX_THEME_SUPPORT \
WX_USE_THEME(wxUNIV_DEFAULT_THEME);
#else
#define wxIMPLEMENT_WX_THEME_SUPPORT
#endif
#else
#define wxIMPLEMENT_WX_THEME_SUPPORT
#endif
// Use this macro if you want to define your own main() or WinMain() function
// and call wxEntry() from there.
#define wxIMPLEMENT_APP_NO_MAIN(appname) \
appname& wxGetApp() { return *static_cast<appname*>(wxApp::GetInstance()); } \
wxAppConsole *wxCreateApp() \
{ \
wxAppConsole::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, \
"your program"); \
return new appname; \
} \
wxAppInitializer \
wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp)
// Same as wxIMPLEMENT_APP() normally but doesn't include themes support in
// wxUniversal builds
#define wxIMPLEMENT_APP_NO_THEMES(appname) \
wxIMPLEMENT_WXWIN_MAIN \
wxIMPLEMENT_APP_NO_MAIN(appname)
// Use this macro exactly once, the argument is the name of the wxApp-derived
// class which is the class of your application.
#define wxIMPLEMENT_APP(appname) \
wxIMPLEMENT_WX_THEME_SUPPORT \
wxIMPLEMENT_APP_NO_THEMES(appname)
// Same as wxIMPLEMENT_APP(), but for console applications.
#define wxIMPLEMENT_APP_CONSOLE(appname) \
wxIMPLEMENT_WXWIN_MAIN_CONSOLE \
wxIMPLEMENT_APP_NO_MAIN(appname)
// this macro can be used multiple times and just allows you to use wxGetApp()
// function
#define wxDECLARE_APP(appname) \
extern appname& wxGetApp()
// declare the stuff defined by wxIMPLEMENT_APP() macro, it's not really needed
// anywhere else but at the very least it suppresses icc warnings about
// defining extern symbols without prior declaration, and it shouldn't do any
// harm
extern wxAppConsole *wxCreateApp();
extern wxAppInitializer wxTheAppInitializer;
// ----------------------------------------------------------------------------
// Compatibility macro aliases
// ----------------------------------------------------------------------------
// deprecated variants _not_ requiring a semicolon after them
// (note that also some wx-prefixed macro do _not_ require a semicolon because
// it's not always possible to force the compiler to require it)
#define IMPLEMENT_WXWIN_MAIN_CONSOLE wxIMPLEMENT_WXWIN_MAIN_CONSOLE
#define IMPLEMENT_WXWIN_MAIN wxIMPLEMENT_WXWIN_MAIN
#define IMPLEMENT_WX_THEME_SUPPORT wxIMPLEMENT_WX_THEME_SUPPORT
#define IMPLEMENT_APP_NO_MAIN(app) wxIMPLEMENT_APP_NO_MAIN(app);
#define IMPLEMENT_APP_NO_THEMES(app) wxIMPLEMENT_APP_NO_THEMES(app);
#define IMPLEMENT_APP(app) wxIMPLEMENT_APP(app);
#define IMPLEMENT_APP_CONSOLE(app) wxIMPLEMENT_APP_CONSOLE(app);
#define DECLARE_APP(app) wxDECLARE_APP(app);
#endif // _WX_APP_H_BASE_
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