X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/1ac4716dd2d6c75a017407a5fc59af11b20721b9..bb7a709657fed261f2a1e60a308bc5548ed892f5:/src/msw/main.cpp diff --git a/src/msw/main.cpp b/src/msw/main.cpp index 83f224db2c..712dc72347 100644 --- a/src/msw/main.cpp +++ b/src/msw/main.cpp @@ -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" @@ -31,6 +27,7 @@ #include "wx/event.h" #include "wx/app.h" #include "wx/cmdline.h" +#include "wx/scopeguard.h" #include "wx/msw/private.h" @@ -70,7 +67,7 @@ extern int wxEntryReal(int& argc, wxChar **argv); #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 @@ -93,7 +90,7 @@ extern int wxEntryReal(int& argc, wxChar **argv); #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 @@ -219,14 +216,17 @@ int wxEntry(int& argc, wxChar **argv) { wxFatalExit(); - // this code is unreachable but put it here to suppress warnings +#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 } } #else // !wxUSE_ON_FATAL_EXCEPTION -#ifdef __VISUALC__ +#if defined(__VISUALC__) && !defined(__WXWINCE__) static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS * WXUNUSED(ep)) @@ -248,17 +248,118 @@ 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() != 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 // ---------------------------------------------------------------------------- +// 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; @@ -293,59 +394,12 @@ 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. + wxON_BLOCK_EXIT2(wxFreeArgs, argc, argv); -#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; + return wxEntry(argc, argv); } -#endif // _WINDLL - -} // extern "C" - -#endif // !NOMAIN - -#endif // wxUSE_GUI +#endif // wxUSE_GUI && __WXMSW__ // ---------------------------------------------------------------------------- // global HINSTANCE