X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/226c11c0767b3dfded410b8c8be8cf0d9444d136..72366f68d1036084d1adc5971eeee4885f36fe5c:/src/msw/main.cpp diff --git a/src/msw/main.cpp b/src/msw/main.cpp index 512287bf44..00728f40fd 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 +24,20 @@ #pragma hdrstop #endif -#include "wx/event.h" -#include "wx/app.h" +#ifndef WX_PRECOMP + #include "wx/event.h" + #include "wx/app.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__ @@ -61,13 +58,16 @@ #define HINSTANCE HANDLE #endif +// defined in common/init.cpp +extern int wxEntryReal(int& argc, wxChar **argv); + // ============================================================================ // implementation: various entry points // ============================================================================ #if wxUSE_BASE -#ifdef __VISUALC__ +#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 @@ -90,16 +90,13 @@ #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 // OnFatalException() if necessary #if wxUSE_ON_FATAL_EXCEPTION -// defined in common/init.cpp -extern int wxEntryReal(int& argc, wxChar **argv); - // global pointer to exception information, only valid inside OnFatalException, // used by wxStackWalker and wxCrashReport extern EXCEPTION_POINTERS *wxGlobalSEInformation = NULL; @@ -121,16 +118,11 @@ 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 +135,7 @@ 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) ) { @@ -211,21 +203,17 @@ int wxEntry(int& argc, wxChar **argv) { DisableAutomaticSETranslator(); - __try + wxSEH_TRY { return wxEntryReal(argc, argv); } - __except ( wxGlobalSEHandler(GetExceptionInformation()) ) - { - wxFatalExit(); - - // this code is unreachable but put it here to suppress warnings - return -1; - } + wxSEH_HANDLE(-1) } #else // !wxUSE_ON_FATAL_EXCEPTION +#if defined(__VISUALC__) && !defined(__WXWINCE__) + static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS * WXUNUSED(ep)) { @@ -233,6 +221,8 @@ wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS * WXUNUSED(ep)) throw; } +#endif // __VISUALC__ + int wxEntry(int& argc, wxChar **argv) { DisableAutomaticSETranslator(); @@ -244,17 +234,118 @@ int wxEntry(int& argc, wxChar **argv) #endif // wxUSE_BASE -#if wxUSE_GUI +#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() != wxOS_WINDOWS_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 // ---------------------------------------------------------------------------- +// helper function used to clean up in wxEntry() just below +// +// notice that argv elements are supposed to be allocated using malloc() while +// argv array itself is allocated with new +static void wxFreeArgs(int argc, wxChar **argv) +{ + for ( int i = 0; i < argc; i++ ) + { + free(argv[i]); + } + + delete [] argv; +} + WXDLLEXPORT int wxEntry(HINSTANCE hInstance, HINSTANCE WXUNUSED(hPrevInstance), 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; @@ -289,59 +380,12 @@ WXDLLEXPORT int wxEntry(HINSTANCE hInstance, // argv[] must be NULL-terminated argv[argc] = NULL; - 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 + wxON_BLOCK_EXIT2(wxFreeArgs, argc, argv); - return TRUE; + return wxEntry(argc, argv); } -#endif // _WINDLL - -} // extern "C" - -#endif // !NOMAIN - -#endif // wxUSE_GUI +#endif // wxUSE_GUI && __WXMSW__ // ---------------------------------------------------------------------------- // global HINSTANCE @@ -362,4 +406,3 @@ void wxSetInstance(HINSTANCE hInst) } #endif // wxUSE_BASE -