X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/13bdd545fb305e02f9ff4ac8048fb0e4e8f2efd5..400a9e419b229cd511d73922bd5506aaab3b120e:/include/wx/app.h diff --git a/include/wx/app.h b/include/wx/app.h index 64bf26e029..b2e7a337b9 100644 --- a/include/wx/app.h +++ b/include/wx/app.h @@ -21,23 +21,35 @@ #if wxUSE_GUI #include "wx/window.h" // for wxTopLevelWindows + + #include "wx/vidmode.h" #endif // wxUSE_GUI #include "wx/build.h" #include "wx/init.h" // we must declare wxEntry() -class WXDLLEXPORT wxApp; -class WXDLLEXPORT wxAppTraits; -class WXDLLEXPORT wxCmdLineParser; -class WXDLLEXPORT wxLog; -class WXDLLEXPORT wxMessageOutput; +class WXDLLIMPEXP_BASE wxAppConsole; +class WXDLLIMPEXP_BASE wxAppTraits; +class WXDLLIMPEXP_BASE wxCmdLineParser; +class WXDLLIMPEXP_BASE wxLog; +class WXDLLIMPEXP_BASE wxMessageOutput; + +// wxUSE_EVTLOOP_IN_APP is a temporary hack needed until all ports are updated +// to use wxEventLoop, otherwise we get linking errors on wxMac, it's going to +// disappear a.s.a.p. +#ifdef __WXMAC__ + #define wxUSE_EVTLOOP_IN_APP 0 +#else + #define wxUSE_EVTLOOP_IN_APP 1 + class WXDLLEXPORT wxEventLoop; +#endif // ---------------------------------------------------------------------------- // typedefs // ---------------------------------------------------------------------------- // the type of the function used to create a wxApp object on program start up -typedef wxApp* (*wxAppInitializerFunction)(); +typedef wxAppConsole* (*wxAppInitializerFunction)(); // ---------------------------------------------------------------------------- // constants @@ -49,37 +61,11 @@ enum wxPRINT_POSTSCRIPT = 2 }; -// ---------------------------------------------------------------------------- -// support for framebuffer ports -// ---------------------------------------------------------------------------- - -#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 // wxUSE_GUI - // ---------------------------------------------------------------------------- // wxAppConsole: wxApp for non-GUI applications // ---------------------------------------------------------------------------- -class WXDLLEXPORT wxAppConsole : public wxEvtHandler +class WXDLLIMPEXP_BASE wxAppConsole : public wxEvtHandler { public: // ctor and dtor @@ -97,6 +83,9 @@ public: // 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 @@ -127,6 +116,20 @@ public: // crash. virtual void OnFatalException() { } +#if wxUSE_EXCEPTIONS + // 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(); + + // Called when an unhandled C++ exception occurs inside OnRun(): note that + // the exception type is lost by now, so if you really want to handle the + // exception you should override OnRun() and put a try/catch around + // MainLoop() call there + virtual void OnUnhandledException() { } +#endif // wxUSE_EXCEPTIONS + // Called from wxExit() function, should terminate the application a.s.a.p. virtual void Exit(); @@ -166,11 +169,13 @@ public: #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 + // 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 @@ -223,6 +228,17 @@ public: // had been already processed or won't be processed at all, respectively virtual int FilterEvent(wxEvent& event); +#if wxUSE_EXCEPTIONS + // 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; +#endif // wxUSE_EXCEPTIONS + // process all events in the wxPendingEvents 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 @@ -255,8 +271,14 @@ public: // 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); - + static bool CheckBuildOptions(const char *optionsSignature, + const char *componentName); +#if WXWIN_COMPATIBILITY_2_4 + static bool CheckBuildOptions(const wxBuildOptions& buildOptions) + { + return CheckBuildOptions(buildOptions.m_signature, "your program"); + } +#endif // implementation only from now on // ------------------------------- @@ -267,6 +289,13 @@ public: 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; @@ -281,6 +310,10 @@ protected: // function used for dynamic wxApp creation static wxAppInitializerFunction ms_appInitFn; + // the one and only global application object + static wxAppConsole *ms_appInstance; + + // application info (must be set from the user code) wxString m_vendorName, // vendor name (ACME Inc) m_appName, // app name @@ -302,7 +335,7 @@ protected: #if wxUSE_GUI -class WXDLLEXPORT wxAppBase : public wxAppConsole +class WXDLLIMPEXP_CORE wxAppBase : public wxAppConsole { public: wxAppBase(); @@ -331,6 +364,9 @@ public: // 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 @@ -341,24 +377,23 @@ public: // ----------------------------------------------------------------- // execute the main GUI loop, the function returns when the loop ends - virtual int MainLoop() = 0; + virtual int MainLoop(); // exit the main loop thus terminating the application virtual void Exit(); // exit the main GUI loop during the next iteration (i.e. it does not // stop the program immediately!) - virtual void ExitMainLoop() = 0; - - // returns TRUE if the program is initialized - virtual bool Initialized() = 0; + virtual void ExitMainLoop(); // returns TRUE if there are unprocessed events in the event queue - virtual bool Pending() = 0; + virtual bool Pending(); // process the first event in the event queue (blocks until an event - // apperas if there are none currently) - virtual void Dispatch() = 0; + // appears if there are none currently, use Pending() if this is not + // wanted), returns false if the event loop should stop and true + // otherwise + virtual bool Dispatch(); // process all currently pending events right now // @@ -376,7 +411,14 @@ public: // parties // // it should return TRUE if more idle events are needed, FALSE if not - virtual bool ProcessIdle() = 0; + virtual bool ProcessIdle(); + + // Send idle event to window and all subwindows + // Returns TRUE if more idle time is requested. + virtual bool SendIdleEvents(wxWindow* win, wxIdleEvent& event); + + // Perform standard OnIdle behaviour: call from port's OnIdle + void OnIdle(wxIdleEvent& event); // top level window functions @@ -417,11 +459,11 @@ public: // Get display mode that is used use. This is only used in framebuffer // wxWin ports (such as wxMGL). - virtual wxDisplayModeInfo GetDisplayMode() const { return wxDisplayModeInfo(); } + virtual wxVideoMode GetDisplayMode() const { return wxVideoMode(); } // 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; } + virtual bool SetDisplayMode(const wxVideoMode& WXUNUSED(info)) { return TRUE; } // set use of best visual flag (see below) void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; } @@ -435,6 +477,14 @@ public: int GetPrintMode() const { return wxPRINT_POSTSCRIPT; } + // command line parsing (GUI-specific) + // ------------------------------------------------------------------------ + +#if wxUSE_CMDLINE_PARSER + virtual bool OnCmdLineParsed(wxCmdLineParser& parser); + virtual void OnInitCmdLine(wxCmdLineParser& parser); +#endif + // miscellaneous other stuff // ------------------------------------------------------------------------ @@ -443,6 +493,11 @@ public: // deactivated virtual void SetActive(bool isActive, wxWindow *lastFocus); + // OBSOLETE: don't use, always returns true + // + // returns true if the program is successfully initialized + bool Initialized() { return true; } + protected: // delete all objects in wxPendingDelete list @@ -452,6 +507,12 @@ protected: virtual wxAppTraits *CreateTraits(); +#if wxUSE_EVTLOOP_IN_APP + // the main event loop of the application (may be NULL if the loop hasn't + // been started yet or has already terminated) + wxEventLoop *m_mainLoop; +#endif // wxUSE_EVTLOOP_IN_APP + // the main top level window (may be NULL) wxWindow *m_topWindow; @@ -502,21 +563,24 @@ protected: #include "wx/os2/app.h" #endif #else // !GUI - // can't use typedef because wxApp forward declared as a class - class WXDLLEXPORT wxApp : public wxAppConsole - { - }; + // allow using just wxApp (instead of wxAppConsole) in console programs + typedef wxAppConsole wxApp; #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 DECLARE_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 ((wxApp *)wxApp::GetInstance()) // ---------------------------------------------------------------------------- // global functions @@ -526,13 +590,13 @@ WXDLLEXPORT_DATA(extern wxApp*) wxTheApp; // ------------------------------------------------------ // Force an exit from main loop -extern void WXDLLEXPORT wxExit(); +extern void WXDLLIMPEXP_BASE wxExit(); // Yield to other apps/messages -extern bool WXDLLEXPORT wxYield(); +extern bool WXDLLIMPEXP_BASE wxYield(); // Yield to other apps/messages -extern void WXDLLEXPORT wxWakeUpIdle(); +extern void WXDLLIMPEXP_BASE wxWakeUpIdle(); // ---------------------------------------------------------------------------- // macros for dynamic creation of the application object @@ -542,7 +606,7 @@ extern void WXDLLEXPORT wxWakeUpIdle(); // 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) @@ -553,22 +617,36 @@ public: // be in your main program (e.g. hello.cpp). Now IMPLEMENT_APP should add this // code if required. +#define IMPLEMENT_WXWIN_MAIN_CONSOLE \ + int main(int argc, char **argv) { return wxEntry(argc, argv); } + #if !wxUSE_GUI || !defined(__WXMSW__) #define IMPLEMENT_WXWIN_MAIN \ - int main(int argc, char **argv) { return wxEntry(argc, argv); } -#elif defined(__WXMSW__) && defined(WXUSINGDLL) + IMPLEMENT_WXWIN_MAIN_CONSOLE +#elif defined(__WXMSW__) // we need HINSTANCE declaration to define WinMain() - #include - #include "wx/msw/winundef.h" + #include "wx/msw/wrapwin.h" + + #ifndef SW_SHOWNORMAL + #define SW_SHOWNORMAL 1 + #endif + + // WinMain() is always ANSI, even in Unicode build, under normal Windows + // but is always Unicode under CE + #ifdef __WXWINCE__ + typedef wchar_t *wxCmdLineArgType; + #else + typedef char *wxCmdLineArgType; + #endif #define IMPLEMENT_WXWIN_MAIN \ extern int wxEntry(HINSTANCE hInstance, \ HINSTANCE hPrevInstance = NULL, \ - char *pCmdLine = NULL, \ - int nCmdShow = SW_NORMAL); \ + wxCmdLineArgType pCmdLine = NULL, \ + int nCmdShow = SW_SHOWNORMAL); \ extern "C" int WINAPI WinMain(HINSTANCE hInstance, \ HINSTANCE hPrevInstance, \ - char *lpCmdLine, \ + wxCmdLineArgType lpCmdLine, \ int nCmdShow) \ { \ return wxEntry(hInstance, hPrevInstance, lpCmdLine, nCmdShow); \ @@ -590,9 +668,10 @@ public: // 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() \ + wxAppConsole *wxCreateApp() \ { \ - wxApp::CheckBuildOptions(wxBuildOptions()); \ + wxAppConsole::CheckBuildOptions(WX_BUILD_OPTIONS_SIGNATURE, \ + "your program"); \ return new appname; \ } \ wxAppInitializer \ @@ -611,6 +690,11 @@ public: IMPLEMENT_APP_NO_THEMES(appname) \ IMPLEMENT_WX_THEME_SUPPORT +// Same as IMPLEMENT_APP(), but for console applications. +#define IMPLEMENT_APP_CONSOLE(appname) \ + IMPLEMENT_APP_NO_MAIN(appname) \ + IMPLEMENT_WXWIN_MAIN_CONSOLE + // this macro can be used multiple times and just allows you to use wxGetApp() // function #define DECLARE_APP(appname) extern appname& wxGetApp();