X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/69c54afe2107b65f2d4363c959fda1c73061054b..8cbc59fe84f046685b873cf58f6c56debe59de1c:/src/msw/main.cpp diff --git a/src/msw/main.cpp b/src/msw/main.cpp index 8e0a07afc1..5c11efd693 100644 --- a/src/msw/main.cpp +++ b/src/msw/main.cpp @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: msw/main.cpp +// Name: src/msw/main.cpp // Purpose: WinMain/DllMain // Author: Julian Smart // Modified by: @@ -17,10 +17,6 @@ // headers // ---------------------------------------------------------------------------- -#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) - #pragma implementation -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -28,19 +24,21 @@ #pragma hdrstop #endif -#include "wx/event.h" -#include "wx/app.h" +#ifndef WX_PRECOMP + #include "wx/event.h" + #include "wx/app.h" + #include "wx/utils.h" +#endif //WX_PRECOMP + #include "wx/cmdline.h" +#include "wx/scopeguard.h" #include "wx/msw/private.h" +#include "wx/msw/seh.h" #if wxUSE_ON_FATAL_EXCEPTION #include "wx/datetime.h" #include "wx/msw/crashrpt.h" - - #ifdef __VISUALC__ - #include - #endif // __VISUALC__ #endif // wxUSE_ON_FATAL_EXCEPTION #ifdef __WXWINCE__ @@ -63,6 +61,7 @@ // defined in common/init.cpp extern int wxEntryReal(int& argc, wxChar **argv); +extern int wxEntryCleanupReal(int& argc, wxChar **argv); // ============================================================================ // implementation: various entry points @@ -70,7 +69,15 @@ extern int wxEntryReal(int& argc, wxChar **argv); #if wxUSE_BASE -#if wxUSE_ON_FATAL_EXCEPTION && defined(__VISUALC__) && !defined(__WXWINCE__) +// ---------------------------------------------------------------------------- +// wrapper wxEntry catching all Win32 exceptions occurring in a wx program +// ---------------------------------------------------------------------------- + +// wrap real wxEntry in a try-except block to be able to call +// OnFatalException() if necessary +#if wxUSE_ON_FATAL_EXCEPTION + +#if 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 @@ -81,8 +88,8 @@ extern int wxEntryReal(int& argc, wxChar **argv); // 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 + // with VC++ up to 8.0 + #if _MSC_VER <= 1400 #pragma warning(disable:4535) #endif @@ -92,14 +99,6 @@ extern int wxEntryReal(int& argc, wxChar **argv); #define DisableAutomaticSETranslator() #endif // __VISUALC__/!__VISUALC__ -// ---------------------------------------------------------------------------- -// wrapper wxEntry catching all Win32 exceptions occurring in a wx program -// ---------------------------------------------------------------------------- - -// wrap real wxEntry in a try-except block to be able to call -// OnFatalException() if necessary -#if wxUSE_ON_FATAL_EXCEPTION - // global pointer to exception information, only valid inside OnFatalException, // used by wxStackWalker and wxCrashReport extern EXCEPTION_POINTERS *wxGlobalSEInformation = NULL; @@ -121,16 +120,11 @@ unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs) wxGlobalSEInformation = pExcPtrs; // give the user a chance to do something special about this - __try + wxSEH_TRY { wxTheApp->OnFatalException(); } - __except ( EXCEPTION_EXECUTE_HANDLER ) - { - // nothing to do here, just ignore the exception inside the - // exception handler - ; - } + wxSEH_IGNORE // ignore any exceptions inside the exception handler wxGlobalSEInformation = NULL; @@ -143,7 +137,7 @@ unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs) #ifdef __VISUALC__ -static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep) +void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep) { switch ( wxGlobalSEHandler(ep) ) { @@ -192,7 +186,7 @@ bool wxHandleFatalExceptions(bool doit) wxString name = wxString::Format ( _T("%s_%s_%lu.dmp"), - wxTheApp ? wxTheApp->GetAppName().c_str() + wxTheApp ? (const wxChar*)wxTheApp->GetAppDisplayName().c_str() : _T("wxwindows"), wxDateTime::Now().Format(_T("%Y%m%dT%H%M%S")).c_str(), ::GetCurrentProcessId() @@ -211,39 +205,17 @@ int wxEntry(int& argc, wxChar **argv) { DisableAutomaticSETranslator(); - __try + wxSEH_TRY { return wxEntryReal(argc, argv); } - __except ( wxGlobalSEHandler(GetExceptionInformation()) ) - { - wxFatalExit(); - -#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; -#endif // !__VISUALC__ in release build - } + wxSEH_HANDLE(-1) } #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__ - int wxEntry(int& argc, wxChar **argv) { - DisableAutomaticSETranslator(); - return wxEntryReal(argc, argv); } @@ -253,37 +225,36 @@ int wxEntry(int& argc, wxChar **argv) #if wxUSE_GUI && defined(__WXMSW__) -// ---------------------------------------------------------------------------- -// Windows-specific wxEntry -// ---------------------------------------------------------------------------- +#if wxUSE_UNICODE && !defined(__WXWINCE__) + #define NEED_UNICODE_CHECK +#endif -WXDLLEXPORT int wxEntry(HINSTANCE hInstance, - HINSTANCE WXUNUSED(hPrevInstance), - wxCmdLineArgType WXUNUSED(pCmdLine), - int nCmdShow) +#ifdef NEED_UNICODE_CHECK + +// check whether Unicode is available +static bool wxIsUnicodeAvailable() { - // 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 -#if wxUSE_UNICODE && !defined(__WXWINCE__) - if ( wxGetOsVersion() != wxWINDOWS_NT ) + static const wchar_t *ERROR_STRING = L"wxWidgets Fatal Error"; + + if ( wxGetOsVersion() != wxOS_WINDOWS_NT ) { // we need to be built with MSLU support -#if !wxUSE_UNICODE_MSLU +#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, - _T("This program uses Unicode and requires Windows NT/2000/XP.\n\nProgram aborted."), - _T("wxWidgets Fatal Error"), + L"This program uses Unicode and requires Windows NT/2000/XP.\n" + L"\n" + L"Program aborted.", + ERROR_STRING, MB_ICONERROR | MB_OK ); - return -1; -#endif // !wxUSE_UNICODE_MSLU - + return false; +#else // wxUSE_UNICODE_MSLU // and the MSLU DLL must also be available HMODULE hmod = ::LoadLibraryA("unicows.dll"); if ( !hmod ) @@ -291,17 +262,102 @@ WXDLLEXPORT int wxEntry(HINSTANCE hInstance, ::MessageBox ( NULL, - _T("This program uses Unicode and requires unicows.dll to work under current operating system.\n\nPlease install unicows.dll and relaunch the program."), - _T("wxWidgets Fatal Error"), + 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 -1; + 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 } -#endif // wxUSE_UNICODE && !wxUSE_UNICODE_MSLU + + return true; +} + +#endif // NEED_UNICODE_CHECK + +// ---------------------------------------------------------------------------- +// Windows-specific wxEntry +// ---------------------------------------------------------------------------- + +struct wxMSWCommandLineArguments +{ + wxMSWCommandLineArguments() { argc = 0; argv = NULL; } + + void Init(const wxArrayString& args) + { + argc = args.size(); + + // +1 here for the terminating NULL + argv = new wxChar *[argc + 1]; + for ( int i = 0; i < argc; i++ ) + { + argv[i] = wxStrdup(args[i].wx_str()); + } + + // argv[] must be NULL-terminated + argv[argc] = NULL; + } + + void Free() + { + if ( !argc ) + return; + + for ( int i = 0; i < argc; i++ ) + { + free(argv[i]); + } + + delete [] argv; + argv = NULL; + argc = 0; + } + + int argc; + wxChar **argv; +}; + +static wxMSWCommandLineArguments wxArgs; + +// common part of wxMSW-specific wxEntryStart() and wxEntry() overloads +static bool +wxMSWEntryCommon(HINSTANCE hInstance, 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 false; +#endif // NEED_UNICODE_CHECK // remember the parameters Windows gave us @@ -326,70 +382,35 @@ WXDLLEXPORT int wxEntry(HINSTANCE hInstance, args.Insert(wxGetFullModuleName(), 0); #endif - int argc = args.GetCount(); - - // +1 here for the terminating NULL - wxChar **argv = new wxChar *[argc + 1]; - for ( int i = 0; i < argc; i++ ) - { - argv[i] = wxStrdup(args[i]); - } + wxArgs.Init(args); - // argv[] must be NULL-terminated - argv[argc] = NULL; - - return wxEntry(argc, argv); + return true; } -// 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" +WXDLLEXPORT bool wxEntryStart(HINSTANCE hInstance, + HINSTANCE WXUNUSED(hPrevInstance), + wxCmdLineArgType WXUNUSED(pCmdLine), + int nCmdShow) { + if ( !wxMSWEntryCommon(hInstance, nCmdShow) ) + return false; -// ---------------------------------------------------------------------------- -// 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 + return wxEntryStart(wxArgs.argc, wxArgs.argv); +} -BOOL WINAPI -DllMain(HINSTANCE hModule, DWORD fdwReason, LPVOID WXUNUSED(lpReserved)) +WXDLLEXPORT int wxEntry(HINSTANCE hInstance, + HINSTANCE WXUNUSED(hPrevInstance), + wxCmdLineArgType WXUNUSED(pCmdLine), + int nCmdShow) { - // 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); + if ( !wxMSWEntryCommon(hInstance, nCmdShow) ) + return -1; - case DLL_PROCESS_DETACH: - wxEntryCleanup(); - break; - } -#else - (void)hModule; - (void)fdwReason; -#endif // !WXMAKINGDLL + wxON_BLOCK_EXIT_OBJ0(wxArgs, wxMSWCommandLineArguments::Free); - return TRUE; + return wxEntry(wxArgs.argc, wxArgs.argv); } -#endif // _WINDLL - -} // extern "C" - -#endif // !NOMAIN - #endif // wxUSE_GUI && __WXMSW__ // ---------------------------------------------------------------------------- @@ -411,4 +432,3 @@ void wxSetInstance(HINSTANCE hInst) } #endif // wxUSE_BASE -