Applied patch from Neil Robinson to allow manipulation of unattached menubars

[wxWidgets.git] / src / msw / main.cpp

diff --git a/src/msw/main.cpp b/src/msw/main.cpp
index aaa5d051ae872417cd01c92aac33b50d2527f5a7..35f1ada5fc6a9def1a20378859348cc22f9a8942 100644 (file)
--- a/src/msw/main.cpp
+++ b/src/msw/main.cpp
@@ -17,10 +17,6 @@
 // headers
 // ----------------------------------------------------------------------------
 
 // headers
 // ----------------------------------------------------------------------------
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-    #pragma implementation
-#endif
-

 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 
 // For compilers that support precompilation, includes "wx.h".
 #include "wx/wxprec.h"
 


@@ -46,25 +42,54 @@
 #ifdef __WXWINCE__
     // there is no ExitProcess() under CE but exiting the main thread has the
     // same effect
 #ifdef __WXWINCE__
     // there is no ExitProcess() under CE but exiting the main thread has the
     // same effect

-    #define ExitProcess ExitThread
-#endif
+    #ifndef ExitProcess
+        #define ExitProcess ExitThread
+    #endif
+#endif // __WXWINCE__

 
 #ifdef __BORLANDC__
     // BC++ has to be special: its run-time expects the DLL entry point to be
     // named DllEntryPoint instead of the (more) standard DllMain
     #define DllMain DllEntryPoint
 
 #ifdef __BORLANDC__
     // BC++ has to be special: its run-time expects the DLL entry point to be
     // named DllEntryPoint instead of the (more) standard DllMain
     #define DllMain DllEntryPoint

-#endif
+#endif // __BORLANDC__

 
 #if defined(__WXMICROWIN__)
     #define HINSTANCE HANDLE
 #endif
 
 
 #if defined(__WXMICROWIN__)
     #define HINSTANCE HANDLE
 #endif
 

+// defined in common/init.cpp
+extern int wxEntryReal(int& argc, wxChar **argv);
+

 // ============================================================================
 // implementation: various entry points
 // ============================================================================
 
 // ============================================================================
 // implementation: various entry points
 // ============================================================================
 

+#if wxUSE_BASE
+
+#if wxUSE_ON_FATAL_EXCEPTION && defined(__VISUALC__) && !defined(__WXWINCE__)
+    // VC++ (at least from 4.0 up to version 7.1) is incredibly broken in that
+    // a "catch ( ... )" will *always* catch SEH exceptions in it even though
+    // it should have never been the case... to prevent such catches from
+    // stealing the exceptions from our wxGlobalSEHandler which is only called
+    // if the exception is not handled elsewhere, we have to also call it from
+    // a special SEH translator function which is called by VC CRT when a Win32
+    // exception occurs
+
+    // this warns that /EHa (async exceptions) should be used when using
+    // _set_se_translator but, in fact, this doesn't seem to change anything
+    // with VC++ up to 7.1 -- to be confirmed with VC++ 8
+    #if _MSC_VER <= 1310
+        #pragma warning(disable:4535)
+    #endif
+
+    // note that the SE translator must be called wxSETranslator!
+    #define DisableAutomaticSETranslator() _set_se_translator(wxSETranslator)
+#else // !__VISUALC__
+    #define DisableAutomaticSETranslator()
+#endif // __VISUALC__/!__VISUALC__
+

 // ----------------------------------------------------------------------------
 // ----------------------------------------------------------------------------

-// wrapper wxEntry catching all Win32 exceptions occuring in a wx program
+// wrapper wxEntry catching all Win32 exceptions occurring in a wx program

 // ----------------------------------------------------------------------------
 
 // wrap real wxEntry in a try-except block to be able to call
 // ----------------------------------------------------------------------------
 
 // wrap real wxEntry in a try-except block to be able to call


@@ -78,6 +103,12 @@ extern EXCEPTION_POINTERS *wxGlobalSEInformation = NULL;
 // flag telling us whether the application wants to handle exceptions at all
 static bool gs_handleExceptions = false;
 
 // flag telling us whether the application wants to handle exceptions at all
 static bool gs_handleExceptions = false;
 

+static void wxFatalExit()
+{
+    // use the same exit code as abort()
+    ::ExitProcess(3);
+}
+

 unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs)
 {
     if ( gs_handleExceptions && wxTheApp )
 unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs)
 {
     if ( gs_handleExceptions && wxTheApp )


@@ -110,7 +141,27 @@ unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs)
 
 static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep)
 {
 
 static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep)
 {

-    wxGlobalSEHandler(ep);
+    switch ( wxGlobalSEHandler(ep) )
+    {
+        default:
+            wxFAIL_MSG( _T("unexpected wxGlobalSEHandler() return value") );
+            // fall through
+
+        case EXCEPTION_EXECUTE_HANDLER:
+            // if wxApp::OnFatalException() had been called we should exit the
+            // application -- but we shouldn't kill our host when we're a DLL
+#ifndef WXMAKINGDLL
+            wxFatalExit();
+#endif // not a DLL
+            break;
+
+        case EXCEPTION_CONTINUE_SEARCH:
+            // we're called for each "catch ( ... )" and if we (re)throw from
+            // here, the catch handler body is not executed, so the effect is
+            // as if had inhibited translation of SE to C++ ones because the
+            // handler will never see any structured exceptions
+            throw;
+    }

 }
 
 #endif // __VISUALC__
 }
 
 #endif // __VISUALC__


@@ -120,17 +171,6 @@ bool wxHandleFatalExceptions(bool doit)
     // assume this can only be called from the main thread
     gs_handleExceptions = doit;
 
     // assume this can only be called from the main thread
     gs_handleExceptions = doit;
 

-#ifdef __VISUALC__
-    // VC++ (at least from 4.0 up to version 7.1) is incredibly broken in that
-    // a "catch ( ... )" will *always* catch SEH exceptions in it even though
-    // it should have never been the case... to prevent such catches from
-    // stealing the exceptions from our wxGlobalSEHandler which is only called
-    // if the exception is not handled elsewhere, we have to also call it from
-    // a special SEH translator function which is called by VC CRT when a Win32
-    // exception occurs
-    _set_se_translator(doit ? wxSETranslator : NULL);
-#endif
-

 #if wxUSE_CRASHREPORT
     if ( doit )
     {
 #if wxUSE_CRASHREPORT
     if ( doit )
     {


@@ -165,27 +205,127 @@ bool wxHandleFatalExceptions(bool doit)
 
 int wxEntry(int& argc, wxChar **argv)
 {
 
 int wxEntry(int& argc, wxChar **argv)
 {

+    DisableAutomaticSETranslator();
+

     __try
     {
     __try
     {

-        extern int wxEntryReal(int& argc, wxChar **argv);
-

         return wxEntryReal(argc, argv);
     }
     __except ( wxGlobalSEHandler(GetExceptionInformation()) )
     {
         return wxEntryReal(argc, argv);
     }
     __except ( wxGlobalSEHandler(GetExceptionInformation()) )
     {

-        ::ExitProcess(3); // the same exit code as abort()
+        wxFatalExit();

 
 

-#if !defined(_MSC_VER) || _MSC_VER < 1300
-        // this code is unreachable but put it here to suppress warnings
-        // from some compilers
+#if !defined(_MSC_VER) || defined(__WXDEBUG__) || (defined(_MSC_VER) && _MSC_VER <= 1200)
+        // this code is unreachable but put it here to suppress warnings in some compilers
+        // and disable for others to supress warnings too

         return -1;
         return -1;

-#endif
+#endif // !__VISUALC__ in release build

     }
 }
 
     }
 }
 

-#endif // wxUSE_ON_FATAL_EXCEPTION
+#else // !wxUSE_ON_FATAL_EXCEPTION
+
+#if defined(__VISUALC__) && !defined(__WXWINCE__)
+
+static void
+wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS * WXUNUSED(ep))
+{
+    // see wxSETranslator() version for wxUSE_ON_FATAL_EXCEPTION above
+    throw;
+}
+
+#endif // __VISUALC__

 
 

-#if wxUSE_GUI
+int wxEntry(int& argc, wxChar **argv)
+{
+    DisableAutomaticSETranslator();
+
+    return wxEntryReal(argc, argv);
+}
+
+#endif // wxUSE_ON_FATAL_EXCEPTION/!wxUSE_ON_FATAL_EXCEPTION
+
+#endif // wxUSE_BASE
+
+#if wxUSE_GUI && defined(__WXMSW__)
+
+#if wxUSE_UNICODE && !defined(__WXWINCE__)
+    #define NEED_UNICODE_CHECK
+#endif
+
+#ifdef NEED_UNICODE_CHECK
+
+// check whether Unicode is available
+static bool wxIsUnicodeAvailable()
+{
+    static const wchar_t *ERROR_STRING = L"wxWidgets Fatal Error";
+
+    if ( wxGetOsVersion() != wxWINDOWS_NT )
+    {
+        // we need to be built with MSLU support
+#if !wxUSE_UNICODE_MSLU 
+        // note that we can use MessageBoxW() as it's implemented even under
+        // Win9x - OTOH, we can't use wxGetTranslation() because the file APIs
+        // used by wxLocale are not
+        ::MessageBox
+        (
+         NULL,
+         L"This program uses Unicode and requires Windows NT/2000/XP.\n"
+         L"\n"
+         L"Program aborted.",
+         ERROR_STRING,
+         MB_ICONERROR | MB_OK
+        );
+
+        return false;
+#else // wxUSE_UNICODE_MSLU
+        // and the MSLU DLL must also be available
+        HMODULE hmod = ::LoadLibraryA("unicows.dll");
+        if ( !hmod )
+        {
+            ::MessageBox
+            (
+             NULL,
+             L"This program uses Unicode and requires unicows.dll to work "
+             L"under current operating system.\n"
+             L"\n"
+             L"Please install unicows.dll and relaunch the program.",
+             ERROR_STRING,
+             MB_ICONERROR | MB_OK
+            );
+            return false;
+        }
+
+        // this is not really necessary but be tidy
+        ::FreeLibrary(hmod);
+
+        // finally do the last check: has unicows.lib initialized correctly?
+        hmod = ::LoadLibraryW(L"unicows.dll");
+        if ( !hmod )
+        {
+            ::MessageBox
+            (
+             NULL,
+             L"This program uses Unicode but is not using unicows.dll\n"
+             L"correctly and so cannot work under current operating system.\n"
+             L"Please contact the program author for an updated version.\n"
+             L"\n"
+             L"Program aborted.",
+             ERROR_STRING,
+             MB_ICONERROR | MB_OK
+            );
+
+            return false;
+        }
+
+        ::FreeLibrary(hmod);
+#endif // !wxUSE_UNICODE_MSLU
+    }
+
+    return true;
+}
+
+#endif // NEED_UNICODE_CHECK

 
 // ----------------------------------------------------------------------------
 // Windows-specific wxEntry
 
 // ----------------------------------------------------------------------------
 // Windows-specific wxEntry


@@ -196,6 +336,15 @@ WXDLLEXPORT int wxEntry(HINSTANCE hInstance,
                         wxCmdLineArgType WXUNUSED(pCmdLine),
                         int nCmdShow)
 {
                         wxCmdLineArgType WXUNUSED(pCmdLine),
                         int nCmdShow)
 {

+    // the first thing to do is to check if we're trying to run an Unicode
+    // program under Win9x w/o MSLU emulation layer - if so, abort right now
+    // as it has no chance to work and has all chances to crash
+#ifdef NEED_UNICODE_CHECK
+    if ( !wxIsUnicodeAvailable() )
+        return -1;
+#endif // NEED_UNICODE_CHECK
+
+

     // remember the parameters Windows gave us
     wxSetInstance(hInstance);
     wxApp::m_nCmdShow = nCmdShow;
     // remember the parameters Windows gave us
     wxSetInstance(hInstance);
     wxApp::m_nCmdShow = nCmdShow;


@@ -233,56 +382,7 @@ WXDLLEXPORT int wxEntry(HINSTANCE hInstance,
     return wxEntry(argc, argv);
 }
 
     return wxEntry(argc, argv);
 }
 

-// May wish not to have a DllMain or WinMain, e.g. if we're programming
-// a Netscape plugin or if we're writing a console application
-#if !defined(NOMAIN)
-
-extern "C"
-{
-
-// ----------------------------------------------------------------------------
-// WinMain
-// ----------------------------------------------------------------------------
-
-// Note that WinMain is also defined in dummy.obj, which is linked to
-// an application that is using the DLL version of wxWidgets.
-
-#if defined(_WINDLL)
-
-// DLL entry point
-
-BOOL WINAPI
-DllMain(HANDLE hModule, DWORD fdwReason, LPVOID WXUNUSED(lpReserved))
-{
-    // Only call wxEntry if the application itself is part of the DLL.
-    // If only the wxWidgets library is in the DLL, then the
-    // initialisation will be called when the application implicitly
-    // calls WinMain.
-#ifndef WXMAKINGDLL
-    switch (fdwReason)
-    {
-        case DLL_PROCESS_ATTACH:
-            return wxEntry(hModule);
-
-        case DLL_PROCESS_DETACH:
-            wxEntryCleanup();
-            break;
-    }
-#else
-    (void)hModule;
-    (void)fdwReason;
-#endif // !WXMAKINGDLL
-
-    return TRUE;
-}
-
-#endif // _WINDLL
-
-} // extern "C"
-
-#endif // !NOMAIN
-
-#endif // wxUSE_GUI
+#endif // wxUSE_GUI && __WXMSW__

 
 // ----------------------------------------------------------------------------
 // global HINSTANCE
 
 // ----------------------------------------------------------------------------
 // global HINSTANCE