X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/b5fe69248a9de05dcf36fe24e3c1eb2e60fa7f5a..537a0880d225ab023024f6f5fc8955666b7641b8:/src/msw/main.cpp diff --git a/src/msw/main.cpp b/src/msw/main.cpp index 6ad79060fc..900ef4fdef 100644 --- a/src/msw/main.cpp +++ b/src/msw/main.cpp @@ -17,7 +17,7 @@ // headers // ---------------------------------------------------------------------------- -#ifdef __GNUG__ +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma implementation #endif @@ -34,9 +34,19 @@ #include "wx/msw/private.h" -// Don't implement WinMain if we're building an MFC/wxWindows hybrid app. -#if wxUSE_MFC && !defined(NOMAIN) - #define NOMAIN 1 +#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__ + // there is no ExitProcess() under CE but exiting the main thread has the + // same effect + #define ExitProcess ExitThread #endif #ifdef __BORLANDC__ @@ -49,20 +59,141 @@ #define HINSTANCE HANDLE #endif -#if wxUSE_GUI +// ============================================================================ +// implementation: various entry points +// ============================================================================ // ---------------------------------------------------------------------------- -// function prototypes +// wrapper wxEntry catching all Win32 exceptions occuring in a wx program // ---------------------------------------------------------------------------- -// from src/msw/app.cpp -extern void WXDLLEXPORT wxEntryCleanup(); +// wrap real wxEntry in a try-except block to be able to call +// OnFatalException() if necessary +#if wxUSE_ON_FATAL_EXCEPTION && wxUSE_BASE -static wxChar **ConvertToStandardCommandArgs(const wxChar *p, int& argc); +// global pointer to exception information, only valid inside OnFatalException, +// used by wxStackWalker and wxCrashReport +extern EXCEPTION_POINTERS *wxGlobalSEInformation = NULL; -// ============================================================================ -// implementation: various entry points -// ============================================================================ +// flag telling us whether the application wants to handle exceptions at all +static bool gs_handleExceptions = false; + +unsigned long wxGlobalSEHandler(EXCEPTION_POINTERS *pExcPtrs) +{ + if ( gs_handleExceptions && wxTheApp ) + { + // store the pointer to exception info + wxGlobalSEInformation = pExcPtrs; + + // give the user a chance to do something special about this + __try + { + wxTheApp->OnFatalException(); + } + __except ( EXCEPTION_EXECUTE_HANDLER ) + { + // nothing to do here, just ignore the exception inside the + // exception handler + ; + } + + wxGlobalSEInformation = NULL; + + // this will execute our handler and terminate the process + return EXCEPTION_EXECUTE_HANDLER; + } + + return EXCEPTION_CONTINUE_SEARCH; +} + +#ifdef __VISUALC__ + +static void wxSETranslator(unsigned int WXUNUSED(code), EXCEPTION_POINTERS *ep) +{ + wxGlobalSEHandler(ep); +} + +#endif // __VISUALC__ + +bool wxHandleFatalExceptions(bool 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 + + // 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 + + _set_se_translator(doit ? wxSETranslator : NULL); +#endif + +#if wxUSE_CRASHREPORT + if ( doit ) + { + // try to find a place where we can put out report file later + wxChar fullname[MAX_PATH]; + if ( !::GetTempPath(WXSIZEOF(fullname), fullname) ) + { + wxLogLastError(_T("GetTempPath")); + + // when all else fails... + wxStrcpy(fullname, _T("c:\\")); + } + + // use PID and date to make the report file name more unique + wxString name = wxString::Format + ( + _T("%s_%s_%lu.dmp"), + wxTheApp ? wxTheApp->GetAppName().c_str() + : _T("wxwindows"), + wxDateTime::Now().Format(_T("%Y%m%dT%H%M%S")).c_str(), + ::GetCurrentProcessId() + ); + + wxStrncat(fullname, name, WXSIZEOF(fullname) - wxStrlen(fullname) - 1); + + wxCrashReport::SetFileName(fullname); + } +#endif // wxUSE_CRASHREPORT + + return true; +} + +int wxEntry(int& argc, wxChar **argv) +{ + __try + { + extern int wxEntryReal(int& argc, wxChar **argv); + + return wxEntryReal(argc, argv); + } + __except ( wxGlobalSEHandler(GetExceptionInformation()) ) + { + ::ExitProcess(3); // the same exit code as abort() + +#if !defined(_MSC_VER) || _MSC_VER < 1300 + // this code is unreachable but put it here to suppress warnings + // from some compilers + return -1; +#endif + } +} + +#endif // wxUSE_ON_FATAL_EXCEPTION && wxUSE_BASE + +#if wxUSE_GUI // ---------------------------------------------------------------------------- // Windows-specific wxEntry @@ -70,16 +201,42 @@ static wxChar **ConvertToStandardCommandArgs(const wxChar *p, int& argc); WXDLLEXPORT int wxEntry(HINSTANCE hInstance, HINSTANCE WXUNUSED(hPrevInstance), - char *pCmdLine, + wxCmdLineArgType WXUNUSED(pCmdLine), int nCmdShow) { // remember the parameters Windows gave us wxSetInstance(hInstance); wxApp::m_nCmdShow = nCmdShow; - // parse the command line - int argc; - wxChar **argv = ConvertToStandardCommandArgs(wxConvertMB2WX(pCmdLine), argc); + // parse the command line: we can't use pCmdLine in Unicode build so it is + // simpler to never use it at all (this also results in a more correct + // argv[0]) + + // break the command line in words + wxArrayString args; + + const wxChar *cmdLine = ::GetCommandLine(); + if ( cmdLine ) + { + args = wxCmdLineParser::ConvertStringToArgs(cmdLine); + } + +#ifdef __WXWINCE__ + // WinCE doesn't insert the program itself, so do it ourselves. + 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]); + } + + // argv[] must be NULL-terminated + argv[argc] = NULL; return wxEntry(argc, argv); } @@ -96,19 +253,9 @@ extern "C" // ---------------------------------------------------------------------------- // Note that WinMain is also defined in dummy.obj, which is linked to -// an application that is using the DLL version of wxWindows. - -#if !defined(_WINDLL) - -int PASCAL WinMain(HINSTANCE hInstance, - HINSTANCE hPrevInstance, - LPSTR lpCmdLine, - int nCmdShow) -{ - return wxEntry(hInstance, hPrevInstance, lpCmdLine, nCmdShow); -} +// an application that is using the DLL version of wxWidgets. -#else // _WINDLL +#if defined(_WINDLL) // DLL entry point @@ -116,7 +263,7 @@ 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 wxWindows library is in the DLL, then the + // If only the wxWidgets library is in the DLL, then the // initialisation will be called when the application implicitly // calls WinMain. #ifndef WXMAKINGDLL @@ -130,53 +277,19 @@ DllMain(HANDLE hModule, DWORD fdwReason, LPVOID WXUNUSED(lpReserved)) break; } #else - (void)hModule; - (void)fdwReason; + (void)hModule; + (void)fdwReason; #endif // !WXMAKINGDLL return TRUE; } -#endif // _WINDLL/!_WINDLL +#endif // _WINDLL } // extern "C" #endif // !NOMAIN -// --------------------------------------------------------------------------- -// Convert Windows to argc, argv style -// --------------------------------------------------------------------------- - -wxChar **ConvertToStandardCommandArgs(const wxChar *p, int& argc) -{ - // break the command line in words - wxArrayString args; - if ( p ) - { - args = wxCmdLineParser::ConvertStringToArgs(p); - } - - // +1 here for the program name - argc = args.GetCount() + 1; - - // and +1 here for the terminating NULL - wxChar **argv = new wxChar *[argc + 1]; - - argv[0] = new wxChar[MAX_PATH]; - ::GetModuleFileName(wxhInstance, argv[0], MAX_PATH); - - // copy all the other arguments to wxApp::argv[] - for ( int i = 1; i < argc; i++ ) - { - argv[i] = wxStrdup(args[i - 1]); - } - - // argv[] must be NULL-terminated - argv[argc] = NULL; - - return argv; -} - #endif // wxUSE_GUI // ---------------------------------------------------------------------------- @@ -187,7 +300,7 @@ wxChar **ConvertToStandardCommandArgs(const wxChar *p, int& argc) HINSTANCE wxhInstance = 0; -HINSTANCE wxGetInstance() +extern "C" HINSTANCE wxGetInstance() { return wxhInstance; }