/////////////////////////////////////////////////////////////////////////////
-// Name: app.h
+// 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
// RCS-ID: $Id$
-// Copyright: (c) Julian Smart and Markus Holzem
+// Copyright: (c) Julian Smart
// Licence: wxWindows licence
/////////////////////////////////////////////////////////////////////////////
#ifndef _WX_APP_H_BASE_
#define _WX_APP_H_BASE_
-#ifdef __GNUG__
- #pragma interface "appbase.h"
-#endif
-
// ----------------------------------------------------------------------------
-// typedefs
+// headers we have to include here
// ----------------------------------------------------------------------------
-#if (defined(__WXMSW__) && !defined(__WXMICROWIN__)) || defined (__WXPM__)
- class WXDLLEXPORT wxApp;
- typedef wxApp* (*wxAppInitializerFunction)();
-#else
- // returning wxApp* won't work with gcc
- #include "wx/object.h"
+#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;
- typedef wxObject* (*wxAppInitializerFunction)();
+#if wxUSE_GUI
+ struct WXDLLIMPEXP_FWD_CORE wxVideoMode;
+ class WXDLLIMPEXP_FWD_CORE wxWindow;
#endif
-class WXDLLEXPORT wxCmdLineParser;
+// 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()
// ----------------------------------------------------------------------------
-// headers we have to include here
+// typedefs
// ----------------------------------------------------------------------------
-#include "wx/event.h" // for the base class
-
-#if wxUSE_GUI
- #include "wx/window.h" // for wxTopLevelWindows
-#endif // wxUSE_GUI
-
-#if wxUSE_LOG
- #include "wx/log.h"
-#endif
+// the type of the function used to create a wxApp object on program start up
+typedef wxAppConsole* (*wxAppInitializerFunction)();
// ----------------------------------------------------------------------------
// constants
// ----------------------------------------------------------------------------
-static const int wxPRINT_WINDOWS = 1;
-static const int wxPRINT_POSTSCRIPT = 2;
+enum
+{
+ wxPRINT_WINDOWS = 1,
+ wxPRINT_POSTSCRIPT = 2
+};
// ----------------------------------------------------------------------------
-// support for framebuffer ports
+// global variables
// ----------------------------------------------------------------------------
-#if wxUSE_GUI
-// VS: Fullscreen/framebuffer application needs to choose display mode prior
-// to wxWindows initialization. This class holds information about display
-// mode. It is used by wxApp::Set/GetDisplayMode.
-class WXDLLEXPORT wxDisplayModeInfo
-{
-public:
- wxDisplayModeInfo() : m_ok(FALSE) {}
- wxDisplayModeInfo(unsigned width, unsigned height, unsigned depth)
- : m_width(width), m_height(height), m_depth(depth), m_ok(TRUE) {}
-
- unsigned GetWidth() const { return m_width; }
- unsigned GetHeight() const { return m_height; }
- unsigned GetDepth() const { return m_depth; }
- bool IsOk() const { return m_ok; }
-
-private:
- unsigned m_width, m_height, m_depth;
- bool m_ok;
-};
-#endif
+// 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;
// ----------------------------------------------------------------------------
-// the common part of wxApp implementations for all platforms
+// wxAppConsoleBase: wxApp for non-GUI applications
// ----------------------------------------------------------------------------
-class WXDLLEXPORT wxAppBase : public wxEvtHandler
+class WXDLLIMPEXP_BASE wxAppConsoleBase : public wxEvtHandler,
+ public wxEventFilter
{
public:
- wxAppBase();
+ // ctor and dtor
+ wxAppConsoleBase();
+ virtual ~wxAppConsoleBase();
+
// the virtual functions which may/must be overridden in the derived class
// -----------------------------------------------------------------------
- // called during the program initialization, returning FALSE from here
- // prevents the program from continuing - it's a good place to create
- // the top level program window and return TRUE.
- //
- // Override: always in GUI application, rarely in console ones.
+ // 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();
-#if wxUSE_GUI
- // 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();
-#endif // wxUSE_GUI
+ // 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 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.
-#if wxUSE_GUI
- virtual int OnRun() { return MainLoop(); };
-#else // !GUI
- virtual int OnRun() = 0;
-#endif // wxUSE_GUI
+ // 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)) {}
- // called after the main loop termination. This is a good place for
- // cleaning up (it may be too late in dtor) and is also useful if you
- // want to return some non-default exit code - this is just the return
- // value of this method.
- //
- // Override: often.
+ // 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();
- // 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.
- //
- // Override: rarely.
+ // 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() { }
- // the worker functions - usually not used directly by the user code
- // -----------------------------------------------------------------
-
-#if wxUSE_GUI
- // execute the main GUI loop, the function returns when the loop ends
- virtual int MainLoop() = 0;
-
- // exit the main GUI loop during the next iteration (i.e. it does not
- // stop the program immediately!)
- virtual void ExitMainLoop() = 0;
+ // Called from wxExit() function, should terminate the application a.s.a.p.
+ virtual void Exit();
- // returns TRUE if the program is initialized
- virtual bool Initialized() = 0;
-
- // returns TRUE if there are unprocessed events in the event queue
- virtual bool Pending() = 0;
-
- // process the first event in the event queue (blocks until an event
- // apperas if there are none currently)
- virtual void Dispatch() = 0;
-
- // process all currently pending events right now
- //
- // it is an error to call Yield() recursively unless the value of
- // onlyIfNeeded is TRUE
- //
- // WARNING: this function is dangerous as it can lead to unexpected
- // reentrancies (i.e. when called from an event handler it
- // may result in calling the same event handler again), use
- // with _extreme_ care or, better, don't use at all!
- virtual bool Yield(bool onlyIfNeeded = FALSE) = 0;
-#endif // wxUSE_GUI
// application info: name, description, vendor
// -------------------------------------------
// be argv[0]
// set/get the application name
- wxString GetAppName() const
- {
- if ( !m_appName )
- return m_className;
- else
- return m_appName;
- }
+ 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; }
const wxString& GetVendorName() const { return m_vendorName; }
void SetVendorName(const wxString& name) { m_vendorName = name; }
-#if wxUSE_GUI
- // 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
+ // 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
{
- if (m_topWindow)
- return m_topWindow;
- else if (wxTopLevelWindows.GetCount() > 0)
- return wxTopLevelWindows.GetFirst()->GetData();
- else
- return (wxWindow *)NULL;
+ return m_vendorDisplayName.empty() ? GetVendorName()
+ : m_vendorDisplayName;
+ }
+ void SetVendorDisplayName(const wxString& name)
+ {
+ m_vendorDisplayName = name;
}
- // 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 disabel this (with
- // SetExitOnFrameDelete(FALSE)), you'll have to call ExitMainLoop()
- // explicitly from somewhere.
- void SetExitOnFrameDelete(bool flag) { m_exitOnFrameDelete = flag; }
- bool GetExitOnFrameDelete() const { return m_exitOnFrameDelete; }
-
-#endif // wxUSE_GUI
// cmd line parsing stuff
// ----------------------
#if wxUSE_CMDLINE_PARSER
// this one is called from OnInit() to add all supported options
- // to the given parser
+ // 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
+ // 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
+ // 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
+ // false to abort and true to continue
virtual bool OnCmdLineError(wxCmdLineParser& parser);
#endif // wxUSE_CMDLINE_PARSER
+
// miscellaneous customization functions
// -------------------------------------
-#if wxUSE_LOG
- // override this function to create default log target of arbitrary
- // user-defined class (default implementation creates a wxLogGui
- // object) - this log object is used by default by all wxLogXXX()
- // functions.
- virtual wxLog *CreateLogTarget()
- #if wxUSE_GUI && wxUSE_LOGGUI && !defined(__WXMICROWIN__)
- { return new wxLogGui; }
- #else // !GUI
- { return new wxLogStderr; }
- #endif // wxUSE_GUI
-#endif // wxUSE_LOG
+ // 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();
-#if wxUSE_GUI
- // get the standard icon used by wxWin dialogs - this allows the user
- // to customize the standard dialogs. The 'which' parameter is one of
- // wxICON_XXX values
- virtual wxIcon GetStdIcon(int which) const = 0;
-
- // Get display mode that is used use. This is only used in framebuffer wxWin ports
- // (such as wxMGL).
- virtual wxDisplayModeInfo GetDisplayMode() const { return wxDisplayModeInfo(); }
- // Set display mode to use. This is only used in framebuffer wxWin ports
- // (such as wxMGL). This method should be called from wxApp:OnInitGui
- virtual bool SetDisplayMode(const wxDisplayModeInfo& WXUNUSED(info)) { return TRUE; }
-
- // VZ: what does this do exactly?
- void SetWantDebugOutput( bool flag ) { m_wantDebugOutput = flag; }
- bool GetWantDebugOutput() const { return m_wantDebugOutput; }
+ // 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();
- // set use of best visual flag (see below)
- void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; }
- bool GetUseBestVisual() const { return m_useBestVisual; }
+ // 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();
- // 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
+ // 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);
+
+ // 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 (in the latter case it may rethrow the exception as
+ // well)
+ virtual bool OnExceptionInMainLoop();
+
+#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)
-#ifdef __WXDEBUG__
- virtual void OnAssert(const wxChar *file, int line, const wxChar *msg);
-#endif // __WXDEBUG__
+ //
+ // 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)
- { m_appInitFn = fn; }
+ { ms_appInitFn = fn; }
static wxAppInitializerFunction GetInitializerFunction()
- { return m_appInitFn; }
+ { return ms_appInitFn; }
- // needed to avoid link errors
-#ifdef __DARWIN__
- virtual ~wxAppBase() { }
-#endif
+ // 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; }
- // process all events in the wxPendingEvents list
- virtual void ProcessPendingEvents();
- // access to the command line arguments
- int argc;
- wxChar **argv;
+ // 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 m_appInitFn;
+ 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 Inc)
- m_appName, // app name
- m_className; // class name
+ 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;
- // TRUE if the application wants to get debug output
- bool m_wantDebugOutput;
+ // 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(__WXMSW__)
+ #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
- // the main top level window - may be NULL
+
+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);
+
+ // 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();
+
+ // a matching function for OnInit()
+ virtual int OnExit();
+
+ // very last clean up function
+ //
+ // Override: very rarely
+ virtual void CleanUp();
+
+
+ // 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();
+
+ // override base class version: GUI apps always use an event loop
+ virtual bool UsesEventLoop() const { 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);
+ virtual void OnInitCmdLine(wxCmdLineParser& parser);
+#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);
+
+#if WXWIN_COMPATIBILITY_2_6
+ // OBSOLETE: don't use, always returns true
+ //
+ // returns true if the program is successfully initialized
+ wxDEPRECATED( bool Initialized() );
+#endif // WXWIN_COMPATIBILITY_2_6
+
+protected:
+ // override base class method to use GUI traits
+ virtual wxAppTraits *CreateTraits();
+
+
+ // the main top level window (may be NULL)
wxWindow *m_topWindow;
- // if TRUE, exit the main loop when the last top level window is deleted
- bool m_exitOnFrameDelete;
+ // 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
+ // 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 has focus?
+ // does any of our windows have focus?
bool m_isActive;
-#endif // wxUSE_GUI
+
+ wxDECLARE_NO_COPY_CLASS(wxAppBase);
};
+#if WXWIN_COMPATIBILITY_2_6
+ inline bool wxAppBase::Initialized() { return true; }
+#endif // WXWIN_COMPATIBILITY_2_6
+
// ----------------------------------------------------------------------------
// 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(__WXMAC__)
- #include "wx/mac/app.h"
- #elif defined(__WXPM__)
- #include "wx/os2/app.h"
- #elif defined(__WXSTUBS__)
- #include "wx/stubs/app.h"
- #endif
+#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(__WXCOCOA__)
+ #include "wx/cocoa/app.h"
+#elif defined(__WXPM__)
+ #include "wx/os2/app.h"
+#endif
+
#else // !GUI
- // can't use typedef because wxApp forward declared as a class
- class WXDLLEXPORT wxApp : public wxAppBase
- {
- };
+
+// 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
// ----------------------------------------------------------------------------
-// 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;
+// 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
// ------------------------------------------------------
// Force an exit from main loop
-extern void WXDLLEXPORT wxExit();
+WXDLLIMPEXP_BASE void wxExit();
-// Yield to other apps/messages
-extern bool WXDLLEXPORT wxYield();
+// 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
-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();
+WXDLLIMPEXP_CORE bool wxYield();
-// 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 // wx_YIELD_DECLARED
-#endif // !wxUSE_GUI
+// Yield to other apps/messages
+WXDLLIMPEXP_BASE void wxWakeUpIdle();
// ----------------------------------------------------------------------------
// macros for dynamic creation of the application object
// creator function. wxApp can then call this function to create a new app
// object. Convoluted, but necessary.
-class WXDLLEXPORT wxAppInitializer
+class WXDLLIMPEXP_BASE 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 = 1 ); \
- 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);\
+// 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() as this ensures any
+// Unicode strings can be passed as command line parameters and not just those
+// representable in the current locale.
+#if wxUSE_UNICODE && defined(__VISUALC__)
+ #define wxIMPLEMENT_WXWIN_MAIN_CONSOLE \
+ int wmain(int argc, wchar_t **argv) \
+ { \
+ wxDISABLE_DEBUG_SUPPORT(); \
+ \
+ return wxEntry(argc, argv); \
+ }
+#else // Use standard main()
+ #define wxIMPLEMENT_WXWIN_MAIN_CONSOLE \
+ int main(int argc, char **argv) \
+ { \
+ wxDISABLE_DEBUG_SUPPORT(); \
+ \
+ return wxEntry(argc, argv); \
}
-#else
- #define IMPLEMENT_WXWIN_MAIN
#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"
- #define IMPLEMENT_WX_THEME_SUPPORT \
- WX_USE_THEME(win32); \
- WX_USE_THEME(gtk);
+ #ifdef wxUNIV_DEFAULT_THEME
+ #define wxIMPLEMENT_WX_THEME_SUPPORT \
+ WX_USE_THEME(wxUNIV_DEFAULT_THEME);
+ #else
+ #define wxIMPLEMENT_WX_THEME_SUPPORT
+ #endif
#else
- #define IMPLEMENT_WX_THEME_SUPPORT
+ #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 IMPLEMENT_APP_NO_MAIN(appname) \
- wxApp *wxCreateApp() { return new appname; } \
- wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \
- appname& wxGetApp() { return *(appname *)wxTheApp; }
-
-// Same as IMPLEMENT_APP() normally but doesn't include themes support in
+#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 IMPLEMENT_APP_NO_THEMES(appname) \
- IMPLEMENT_APP_NO_MAIN(appname) \
- IMPLEMENT_WXWIN_MAIN
+#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 IMPLEMENT_APP(appname) \
- IMPLEMENT_APP_NO_THEMES(appname) \
- IMPLEMENT_WX_THEME_SUPPORT
+#define wxIMPLEMENT_APP(appname) \
+ wxIMPLEMENT_WX_THEME_SUPPORT \
+ wxIMPLEMENT_APP_NO_THEMES(appname)
+
+// Same as IMPLEMENT_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 DECLARE_APP(appname) extern appname& wxGetApp();
+#define wxDECLARE_APP(appname) \
+ extern appname& wxGetApp()
-#endif
- // _WX_APP_H_BASE_
+
+// 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 compire 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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