/////////////////////////////////////////////////////////////////////////////
-// 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__
+#if defined(__GNUG__) && !defined(__APPLE__)
#pragma interface "appbase.h"
#endif
// ----------------------------------------------------------------------------
-// typedefs
+// headers we have to include here
// ----------------------------------------------------------------------------
-#ifdef __WXMSW__
- 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
+
+#if wxUSE_GUI
+ #include "wx/window.h" // for wxTopLevelWindows
+#endif // wxUSE_GUI
- typedef wxObject* (*wxAppInitializerFunction)();
+#if WXWIN_COMPATIBILITY_2_2
+ #include "wx/icon.h"
#endif
+#include "wx/build.h"
+
+class WXDLLEXPORT wxApp;
+class WXDLLEXPORT wxCmdLineParser;
+class WXDLLEXPORT wxLog;
+class WXDLLEXPORT wxMessageOutput;
+
// ----------------------------------------------------------------------------
-// headers we have to include here
+// typedefs
// ----------------------------------------------------------------------------
-#include "wx/event.h" // for the base class
-
-#include "wx/window.h" // for wxTopLevelWindows
-
-#if wxUSE_LOG
- #include "wx/log.h"
-#endif
+// the type of the function used to create a wxApp object on program start up
+typedef wxApp* (*wxAppInitializerFunction)();
// ----------------------------------------------------------------------------
// constants
static const int wxPRINT_WINDOWS = 1;
static const int 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
+
// ----------------------------------------------------------------------------
// the common part of wxApp implementations for all platforms
// ----------------------------------------------------------------------------
class WXDLLEXPORT wxAppBase : public wxEvtHandler
{
+ DECLARE_NO_COPY_CLASS(wxAppBase)
+
public:
+ wxAppBase();
+ virtual ~wxAppBase();
+
// the virtual functions which may/must be overridden in the derived class
// -----------------------------------------------------------------------
// prevents the program from continuing - it's a good place to create
// the top level program window and return TRUE.
//
- // Override: always.
- virtual bool OnInit() { return FALSE; };
+ // Override: always in GUI application, rarely in console ones.
+ 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() { return TRUE; }
+ virtual bool OnInitGui();
+#endif // wxUSE_GUI
// 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.
+ // ExitMainLoop() is called. In console mode programs, the execution
+ // of the program really starts here
//
- // Override: rarely.
- virtual int OnRun() { return MainLoop(); };
+ // Override: rarely in GUI applications, always in console ones.
+#if wxUSE_GUI
+ virtual int OnRun();
+#else // !GUI
+ virtual int OnRun() = 0;
+#endif // wxUSE_GUI
// 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
// value of this method.
//
// Override: often.
- virtual int OnExit() { return 0; }
+ 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
// 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;
// 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;
+
+ // 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() = 0;
+#endif // wxUSE_GUI
+
// application info: name, description, vendor
// -------------------------------------------
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)
- wxWindow *GetTopWindow() const
+ virtual wxWindow *GetTopWindow() const
{
if (m_topWindow)
return m_topWindow;
// 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; }
+ // 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; }
+
+#endif // wxUSE_GUI
+
+ // 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
+ virtual void OnInitCmdLine(wxCmdLineParser& parser);
+
+ // called after successfully parsing the command line, return TRUE
+ // to continue and FALSE to exit
+ 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
// -------------------------------------
// user-defined class (default implementation creates a wxLogGui
// object) - this log object is used by default by all wxLogXXX()
// functions.
- virtual wxLog *CreateLogTarget() { return new wxLogGui; }
+ virtual wxLog *CreateLogTarget();
#endif // wxUSE_LOG
+ // similar to CreateLogTarget() but for the global wxMessageOutput
+ // object
+ virtual wxMessageOutput *CreateMessageOutput();
+
+#if wxUSE_GUI
+#if WXWIN_COMPATIBILITY_2_2
// 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;
+ virtual wxIcon GetStdIcon(int WXUNUSED(which)) const { return wxNullIcon; }
+#endif
- // VZ: what does this do exactly?
- void SetWantDebugOutput( bool flag ) { m_wantDebugOutput = flag; }
- bool GetWantDebugOutput() const { return m_wantDebugOutput; }
+ // 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; }
+
+ // set use of best visual flag (see below)
+ void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; }
+ bool GetUseBestVisual() const { return m_useBestVisual; }
// set/get printing mode: see wxPRINT_XXX constants.
//
virtual void SetPrintMode(int WXUNUSED(mode)) { }
int GetPrintMode() const { return wxPRINT_POSTSCRIPT; }
+ // called by toolkit-specific code to set the app status: active (we have
+ // focus) or not and also the last window which had focus before we were
+ // deactivated
+ virtual void SetActive(bool isActive, wxWindow *lastFocus);
+#endif // wxUSE_GUI
+
+ // this method allows to filter all the events processed by the program, so
+ // you should try to return quickly from it to avoid slowing down the
+ // program to the crawl
+ //
+ // return value should be -1 to continue with the normal event processing,
+ // or TRUE or FALSE to stop further processing and pretend that the event
+ // had been already processed or won't be processed at all, respectively
+ virtual int FilterEvent(wxEvent& event);
+
+ // debugging support
+ // -----------------
+
+ // this function is called when an assert failure occurs, the base class
+ // version does the normal processing (i.e. shows the usual assert failure
+ // dialog box)
+ //
+ // the arguments are the place where the assert occured, the text of the
+ // assert itself and the user-specified message
+#ifdef __WXDEBUG__
+ virtual void OnAssert(const wxChar *file,
+ int line,
+ const wxChar *cond,
+ const wxChar *msg);
+#endif // __WXDEBUG__
+
+ // check that the wxBuildOptions object (constructed in the application
+ // itself, usually the one from IMPLEMENT_APP() macro) matches the build
+ // options of the library and abort if it doesn't
+ static bool CheckBuildOptions(const wxBuildOptions& buildOptions);
+
+ // deprecated functions, please updae your code to not use them!
+ // -------------------------------------------------------------
+
+#if WXWIN_COMPATIBILITY_2_2
+ // used by obsolete wxDebugMsg only
+ void SetWantDebugOutput( bool flag ) { m_wantDebugOutput = flag; }
+ bool GetWantDebugOutput() const { return m_wantDebugOutput; }
+
+ // TRUE if the application wants to get debug output
+ bool m_wantDebugOutput;
+#endif // WXWIN_COMPATIBILITY_2_2
+
// implementation only from now on
// -------------------------------
static wxAppInitializerFunction GetInitializerFunction()
{ return m_appInitFn; }
+ // process all events in the wxPendingEvents list
+ virtual void ProcessPendingEvents();
+
// access to the command line arguments
- int argc;
- char **argv;
+ int argc;
+ wxChar **argv;
-//private:
protected:
// function used for dynamic wxApp creation
static wxAppInitializerFunction m_appInitFn;
m_appName, // app name
m_className; // class name
- // if TRUE, exit the main loop when the last top level window is deleted
- bool m_exitOnFrameDelete;
-
- // TRUE if the application wants to get debug output
- bool m_wantDebugOutput;
-
+#if wxUSE_GUI
// the main top level window - may be NULL
wxWindow *m_topWindow;
+
+ // if Yes, exit the main loop when the last top level window is deleted, if
+ // No don't do it and if Later -- only do it once we reach our OnRun()
+ //
+ // the explanation for using this strange scheme is given in appcmn.cpp
+ enum
+ {
+ Later = -1,
+ No,
+ Yes
+ } m_exitOnFrameDelete;
+
+ // TRUE if the apps whats to use the best visual on systems where
+ // more than one are available (Sun, SGI, XFree86 4.0 ?)
+ bool m_useBestVisual;
+
+ // does any of our windows has focus?
+ bool m_isActive;
+#endif // wxUSE_GUI
};
// ----------------------------------------------------------------------------
// now include the declaration of the real class
// ----------------------------------------------------------------------------
-#if defined(__WXMSW__)
- #include "wx/msw/app.h"
-#elif defined(__WXMOTIF__)
- #include "wx/motif/app.h"
-#elif defined(__WXQT__)
- #include "wx/qt/app.h"
-#elif defined(__WXGTK__)
- #include "wx/gtk/app.h"
-#elif defined(__WXMAC__)
- #include "wx/mac/app.h"
-#elif defined(__WXSTUBS__)
- #include "wx/stubs/app.h"
-#endif
+#if wxUSE_GUI
+ #if defined(__WXMSW__)
+ #include "wx/msw/app.h"
+ #elif defined(__WXMOTIF__)
+ #include "wx/motif/app.h"
+ #elif defined(__WXMGL__)
+ #include "wx/mgl/app.h"
+ #elif defined(__WXGTK__)
+ #include "wx/gtk/app.h"
+ #elif defined(__WXX11__)
+ #include "wx/x11/app.h"
+ #elif defined(__WXMAC__)
+ #include "wx/mac/app.h"
+ #elif defined(__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
+ {
+ };
+#endif // GUI/!GUI
+
+// ----------------------------------------------------------------------------
+// the global data
+// ----------------------------------------------------------------------------
+
+// the one and only application object - use of wxTheApp in application code
+// is discouraged, consider using DECLARE_APP() after which you may call
+// wxGetApp() which will return the object of the correct type (i.e. MyApp and
+// not wxApp)
+WXDLLEXPORT_DATA(extern wxApp*) wxTheApp;
+
+// ----------------------------------------------------------------------------
+// global functions
+// ----------------------------------------------------------------------------
+
+// event loop related functions only work in GUI programs
+// ------------------------------------------------------
+
+// Force an exit from main loop
+extern void WXDLLEXPORT wxExit();
+
+// Yield to other apps/messages
+extern bool WXDLLEXPORT wxYield();
+
+// Yield to other apps/messages
+extern void WXDLLEXPORT wxWakeUpIdle();
+
+// Post a message to the given eventhandler which will be processed during the
+// next event loop iteration
+inline void wxPostEvent(wxEvtHandler *dest, wxEvent& event)
+{
+ wxCHECK_RET( dest, wxT("need an object to post event to in wxPostEvent") );
+
+#if wxUSE_GUI
+ dest->AddPendingEvent(event);
+#else
+ dest->ProcessEvent(event);
+#endif // wxUSE_GUI
+}
+
+// console applications may avoid using DECLARE_APP and IMPLEMENT_APP macros
+// and call these functions instead at the program startup and termination
+// -------------------------------------------------------------------------
+
+#if !wxUSE_GUI
+
+// initialize the library (may be called as many times as needed, but each
+// call to wxInitialize() must be matched by wxUninitialize())
+extern bool WXDLLEXPORT wxInitialize();
+
+// clean up - the library can't be used any more after the last call to
+// wxUninitialize()
+extern void WXDLLEXPORT wxUninitialize();
+
+// create an object of this class on stack to initialize/cleanup thel ibrary
+// automatically
+class WXDLLEXPORT wxInitializer
+{
+public:
+ // initialize the library
+ wxInitializer() { m_ok = wxInitialize(); }
+
+ // has the initialization been successful? (explicit test)
+ bool IsOk() const { return m_ok; }
+
+ // has the initialization been successful? (implicit test)
+ operator bool() const { return m_ok; }
+
+ // dtor only does clean up if we initialized the library properly
+ ~wxInitializer() { if ( m_ok ) wxUninitialize(); }
+
+private:
+ bool m_ok;
+};
+
+#endif // !wxUSE_GUI
// ----------------------------------------------------------------------------
// macros for dynamic creation of the application object
// be in your main program (e.g. hello.cpp). Now IMPLEMENT_APP should add this
// code if required.
-#if defined(__AIX__) || defined(__HPUX__)
+#if !wxUSE_GUI || defined(__WXMOTIF__) || defined(__WXGTK__) || defined(__WXPM__) || defined(__WXMGL__) || defined(__WXCOCOA__)
+ #define IMPLEMENT_WXWIN_MAIN \
+ extern int wxEntry( int argc, char **argv ); \
+ int main(int argc, char **argv) { return wxEntry(argc, argv); }
+#elif defined(__WXMAC__)
+ // wxMac seems to have a specific wxEntry prototype
#define IMPLEMENT_WXWIN_MAIN \
- extern int wxEntry( int argc, char *argv[] ); \
- int main(int argc, char *argv[]) { return wxEntry(argc, argv); }
+ extern int wxEntry( int argc, char **argv, bool enterLoop = TRUE ); \
+ int main(int argc, char **argv) { return wxEntry(argc, argv); }
#elif defined(__WXMSW__) && defined(WXUSINGDLL)
// NT defines APIENTRY, 3.x not
#if !defined(WXAPIENTRY)
- #ifdef __WATCOMC__
- #define WXAPIENTRY PASCAL
- #else
- #define WXAPIENTRY FAR PASCAL
- #endif
+ #define WXAPIENTRY WXFAR wxSTDCALL
#endif
+ #include <windows.h>
+ #include "wx/msw/winundef.h"
+
#define IMPLEMENT_WXWIN_MAIN \
- int WXAPIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,\
- LPSTR m_lpCmdLine, int nCmdShow )\
+ extern "C" int WXAPIENTRY WinMain(HINSTANCE hInstance,\
+ HINSTANCE hPrevInstance,\
+ LPSTR m_lpCmdLine, int nCmdShow)\
{\
- return wxEntry((WXHINSTANCE) hInstance, \
+ return wxEntry((WXHINSTANCE) hInstance,\
(WXHINSTANCE) hPrevInstance,\
m_lpCmdLine, nCmdShow);\
}
-
#else
#define IMPLEMENT_WXWIN_MAIN
#endif
-// 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) \
- wxApp *wxCreateApp() { return new appname; } \
+#ifdef __WXUNIVERSAL__
+ #include "wx/univ/theme.h"
+
+ #define IMPLEMENT_WX_THEME_SUPPORT \
+ WX_USE_THEME(win32); \
+ WX_USE_THEME(gtk);
+#else
+ #define IMPLEMENT_WX_THEME_SUPPORT
+#endif
+
+// Use this macro if you want to define your own main() or WinMain() function
+// and call wxEntry() from there.
+#define IMPLEMENT_APP_NO_MAIN(appname) \
+ wxApp *wxCreateApp() \
+ { \
+ wxApp::CheckBuildOptions(wxBuildOptions()); \
+ return new appname; \
+ } \
wxAppInitializer wxTheAppInitializer((wxAppInitializerFunction) wxCreateApp); \
- appname& wxGetApp() { return *(appname *)wxTheApp; } \
+ appname& wxGetApp() { return *(appname *)wxTheApp; }
+
+// Same as IMPLEMENT_APP() normally but doesn't include themes support in
+// wxUniversal builds
+#define IMPLEMENT_APP_NO_THEMES(appname) \
+ IMPLEMENT_APP_NO_MAIN(appname) \
IMPLEMENT_WXWIN_MAIN
+// Use this macro exactly once, the argument is the name of the wxApp-derived
+// class which is the class of your application.
+#define IMPLEMENT_APP(appname) \
+ IMPLEMENT_APP_NO_THEMES(appname) \
+ IMPLEMENT_WX_THEME_SUPPORT
+
+// this macro can be used multiple times and just allows you to use wxGetApp()
+// function
#define DECLARE_APP(appname) extern appname& wxGetApp();
#endif
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