Warning fixes for OpenWatcom.

[wxWidgets.git] / include / wx / app.h

diff --git a/include/wx/app.h b/include/wx/app.h
index 3b57e36670f1d1550280c630009107637131d1ed..29f9f34c1886d2c76c5a6ab7877acd8ac14e51df 100644 (file)
--- a/include/wx/app.h
+++ b/include/wx/app.h
@@ -21,6 +21,8 @@
 
 #if wxUSE_GUI
     #include "wx/window.h"  // for wxTopLevelWindows
 
 #if wxUSE_GUI
     #include "wx/window.h"  // for wxTopLevelWindows

+
+    #include "wx/vidmode.h"

 #endif // wxUSE_GUI
 
 #include "wx/build.h"
 #endif // wxUSE_GUI
 
 #include "wx/build.h"


@@ -32,7 +34,15 @@ class WXDLLIMPEXP_BASE wxCmdLineParser;
 class WXDLLIMPEXP_BASE wxLog;
 class WXDLLIMPEXP_BASE wxMessageOutput;
 
 class WXDLLIMPEXP_BASE wxLog;
 class WXDLLIMPEXP_BASE wxMessageOutput;
 

-class WXDLLEXPORT wxEventLoop;
+// 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
 
 // ----------------------------------------------------------------------------
 // typedefs


@@ -51,33 +61,6 @@ enum
     wxPRINT_POSTSCRIPT = 2
 };
 
     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 WXDLLIMPEXP_CORE 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
 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------
 // wxAppConsole: wxApp for non-GUI applications
 // ----------------------------------------------------------------------------


@@ -109,7 +92,7 @@ public:
     // class OnInit() to do it.
     virtual bool OnInit();
 
     // class OnInit() to do it.
     virtual bool OnInit();
 

-    // this is here only temproary hopefully (FIXME)
+    // this is here only temporary hopefully (FIXME)

     virtual bool OnInitGui() { return true; }
 
     // This is the replacement for the normal main(): all program work should
     virtual bool OnInitGui() { return true; }
 
     // This is the replacement for the normal main(): all program work should


@@ -133,6 +116,20 @@ public:
     // crash.
     virtual void OnFatalException() { }
 
     // 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();
 
     // Called from wxExit() function, should terminate the application a.s.a.p.
     virtual void Exit();
 


@@ -176,17 +173,17 @@ public:
     // override it!)
     virtual void OnInitCmdLine(wxCmdLineParser& parser);
 
     // 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
+    // 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);
 
     // 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
     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
 
     virtual bool OnCmdLineError(wxCmdLineParser& parser);
 #endif // wxUSE_CMDLINE_PARSER
 


@@ -231,6 +228,17 @@ public:
     // had been already processed or won't be processed at all, respectively
     virtual int FilterEvent(wxEvent& event);
 
     // 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
     // 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


@@ -243,6 +251,10 @@ public:
     // make sure that idle events are sent again
     virtual void WakeUpIdle() { }
 
     // make sure that idle events are sent again
     virtual void WakeUpIdle() { }
 

+    // this is just a convenience: by providing its implementation here we
+    // avoid #ifdefs in the code using it
+    static bool IsMainLoopRunning() { return false; }
+

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


@@ -368,6 +380,18 @@ public:
     // the worker functions - usually not used directly by the user code
     // -----------------------------------------------------------------
 
     // the worker functions - usually not used directly by the user code
     // -----------------------------------------------------------------
 

+        // return true if we're running main loop, i.e. if the events can
+        // (already) be dispatched
+    static bool IsMainLoopRunning()
+    {
+#if wxUSE_EVTLOOP_IN_APP
+        wxAppBase *app = wx_static_cast(wxAppBase *, GetInstance());
+        return app && app->m_mainLoop != NULL;
+#else
+        return false;
+#endif
+    }
+

         // execute the main GUI loop, the function returns when the loop ends
     virtual int MainLoop();
 
         // execute the main GUI loop, the function returns when the loop ends
     virtual int MainLoop();
 


@@ -378,11 +402,7 @@ public:
         // stop the program immediately!)
     virtual void ExitMainLoop();
 
         // stop the program immediately!)
     virtual void ExitMainLoop();
 

-        // returns true if the program is initialized, i.e. OnInit() has been
-        // completed successfully
-    virtual bool Initialized() = 0;
-
-        // returns TRUE if there are unprocessed events in the event queue
+        // returns true if there are unprocessed events in the event queue

     virtual bool Pending();
 
         // process the first event in the event queue (blocks until an event
     virtual bool Pending();
 
         // process the first event in the event queue (blocks until an event


@@ -394,23 +414,23 @@ public:
         // process all currently pending events right now
         //
         // it is an error to call Yield() recursively unless the value of
         // process all currently pending events right now
         //
         // it is an error to call Yield() recursively unless the value of

-        // onlyIfNeeded is TRUE
+        // 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!
         //
         // 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;
+    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
         //
 
         // 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
+        // it should return true if more idle events are needed, false if not

     virtual bool ProcessIdle();
 
         // Send idle event to window and all subwindows
     virtual bool ProcessIdle();
 
         // Send idle event to window and all subwindows

-        // Returns TRUE if more idle time is requested.
+        // Returns true if more idle time is requested.

     virtual bool SendIdleEvents(wxWindow* win, wxIdleEvent& event);
 
         // Perform standard OnIdle behaviour: call from port's OnIdle
     virtual bool SendIdleEvents(wxWindow* win, wxIdleEvent& event);
 
         // Perform standard OnIdle behaviour: call from port's OnIdle


@@ -420,7 +440,7 @@ public:
     // top level window functions
     // --------------------------
 
     // top level window functions
     // --------------------------
 

-        // return TRUE if our app has focus
+        // return true if our app has focus

     virtual bool IsActive() const { return m_isActive; }
 
         // set the "main" top level window
     virtual bool IsActive() const { return m_isActive; }
 
         // set the "main" top level window


@@ -442,7 +462,7 @@ public:
         // 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
         // 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
+        // (with SetExitOnFrameDelete(false)), you'll have to call

         // ExitMainLoop() explicitly from somewhere.
     void SetExitOnFrameDelete(bool flag)
         { m_exitOnFrameDelete = flag ? Yes : No; }
         // ExitMainLoop() explicitly from somewhere.
     void SetExitOnFrameDelete(bool flag)
         { m_exitOnFrameDelete = flag ? Yes : No; }


@@ -455,11 +475,11 @@ public:
 
         // Get display mode that is used use. This is only used in framebuffer
         // wxWin ports (such as wxMGL).
 
         // 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
         // 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; }
 
         // set use of best visual flag (see below)
     void SetUseBestVisual( bool flag ) { m_useBestVisual = flag; }


@@ -489,6 +509,11 @@ public:
     // deactivated
     virtual void SetActive(bool isActive, wxWindow *lastFocus);
 
     // 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
 
 protected:
     // delete all objects in wxPendingDelete list


@@ -498,9 +523,11 @@ protected:
     virtual wxAppTraits *CreateTraits();
 
 
     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;
     // 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;
 
     // the main top level window (may be NULL)
     wxWindow *m_topWindow;


@@ -516,7 +543,7 @@ protected:
         Yes
     } m_exitOnFrameDelete;
 
         Yes
     } m_exitOnFrameDelete;
 

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


@@ -602,41 +629,17 @@ public:
         { wxApp::SetInitializerFunction(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.
+// the code below defines a IMPLEMENT_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 IMPLEMENT_APP should add this code if required.

 
 #define IMPLEMENT_WXWIN_MAIN_CONSOLE \
         int main(int argc, char **argv) { return wxEntry(argc, argv); }
 
 
 #define IMPLEMENT_WXWIN_MAIN_CONSOLE \
         int main(int argc, char **argv) { return wxEntry(argc, argv); }
 

-#if !wxUSE_GUI || !defined(__WXMSW__)
-    #define IMPLEMENT_WXWIN_MAIN                                              \
-        IMPLEMENT_WXWIN_MAIN_CONSOLE
-#elif defined(__WXMSW__)
-    // we need HINSTANCE declaration to define WinMain()
-    #include "wx/msw/wrapwin.h"
-
-    #ifdef SW_SHOWNORMAL
-    #define wxSW_SHOWNORMAL SW_SHOWNORMAL
-    #else
-    #define wxSW_SHOWNORMAL 0
-    #endif
-
-    #define IMPLEMENT_WXWIN_MAIN \
-        extern int wxEntry(HINSTANCE hInstance,                               \
-                           HINSTANCE hPrevInstance = NULL,                    \
-                           char *pCmdLine = NULL,                             \
-                           int nCmdShow = wxSW_SHOWNORMAL);                         \
-        extern "C" int WINAPI WinMain(HINSTANCE hInstance,                    \
-                                      HINSTANCE hPrevInstance,                \
-                                      char *lpCmdLine,                        \
-                                      int nCmdShow)                           \
-        {                                                                     \
-            return wxEntry(hInstance, hPrevInstance, lpCmdLine, nCmdShow);    \
-        }
-#else
-    #define IMPLEMENT_WXWIN_MAIN
-#endif
+// port-specific header could have defined it already in some special wau
+#ifndef IMPLEMENT_WXWIN_MAIN
+    #define IMPLEMENT_WXWIN_MAIN IMPLEMENT_WXWIN_MAIN_CONSOLE
+#endif // defined(IMPLEMENT_WXWIN_MAIN)

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