///////////////////////////////////////////////////////////////////////////// // Name: wx/utils.h // Purpose: Miscellaneous utilities // Author: Julian Smart // Modified by: // Created: 29/01/98 // RCS-ID: $Id$ // Copyright: (c) 1998 Julian Smart // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// #ifndef _WX_UTILS_H_ #define _WX_UTILS_H_ // ---------------------------------------------------------------------------- // headers // ---------------------------------------------------------------------------- #include "wx/object.h" #include "wx/list.h" #include "wx/filefn.h" #if wxUSE_GUI #include "wx/gdicmn.h" #include "wx/mousestate.h" #endif class WXDLLIMPEXP_FWD_BASE wxArrayString; class WXDLLIMPEXP_FWD_BASE wxArrayInt; // need this for wxGetDiskSpace() as we can't, unfortunately, forward declare // wxLongLong #include "wx/longlong.h" // need for wxOperatingSystemId #include "wx/platinfo.h" #ifdef __WATCOMC__ #include #elif defined(__X__) #include #include #endif #include // ---------------------------------------------------------------------------- // Forward declaration // ---------------------------------------------------------------------------- class WXDLLIMPEXP_FWD_BASE wxProcess; class WXDLLIMPEXP_FWD_CORE wxFrame; class WXDLLIMPEXP_FWD_CORE wxWindow; class WXDLLIMPEXP_FWD_CORE wxWindowList; // ---------------------------------------------------------------------------- // Macros // ---------------------------------------------------------------------------- #define wxMax(a,b) (((a) > (b)) ? (a) : (b)) #define wxMin(a,b) (((a) < (b)) ? (a) : (b)) #define wxClip(a,b,c) (((a) < (b)) ? (b) : (((a) > (c)) ? (c) : (a))) // wxGetFreeMemory can return huge amount of memory on 32-bit platforms as well // so to always use long long for its result type on all platforms which // support it #if wxUSE_LONGLONG typedef wxLongLong wxMemorySize; #else typedef long wxMemorySize; #endif // ---------------------------------------------------------------------------- // String functions (deprecated, use wxString) // ---------------------------------------------------------------------------- #ifdef WXWIN_COMPATIBILITY_2_8 // A shorter way of using strcmp wxDEPRECATED_INLINE(inline bool wxStringEq(const char *s1, const char *s2), return wxCRT_StrcmpA(s1, s2) == 0; ) #if wxUSE_UNICODE wxDEPRECATED_INLINE(inline bool wxStringEq(const wchar_t *s1, const wchar_t *s2), return wxCRT_StrcmpW(s1, s2) == 0; ) #endif // wxUSE_UNICODE #endif // WXWIN_COMPATIBILITY_2_8 // ---------------------------------------------------------------------------- // Miscellaneous functions // ---------------------------------------------------------------------------- // Sound the bell #if !defined __EMX__ && \ (defined __WXMOTIF__ || defined __WXGTK__ || defined __WXX11__) WXDLLIMPEXP_CORE void wxBell(); #else WXDLLIMPEXP_BASE void wxBell(); #endif #if wxUSE_MSGDLG // Show wxWidgets information WXDLLIMPEXP_CORE void wxInfoMessageBox(wxWindow* parent); #endif // wxUSE_MSGDLG // Get OS description as a user-readable string WXDLLIMPEXP_BASE wxString wxGetOsDescription(); // Get OS version WXDLLIMPEXP_BASE wxOperatingSystemId wxGetOsVersion(int *majorVsn = NULL, int *minorVsn = NULL); // Get platform endianness WXDLLIMPEXP_BASE bool wxIsPlatformLittleEndian(); // Get platform architecture WXDLLIMPEXP_BASE bool wxIsPlatform64Bit(); // Return a string with the current date/time WXDLLIMPEXP_BASE wxString wxNow(); // Return path where wxWidgets is installed (mostly useful in Unices) WXDLLIMPEXP_BASE const wxChar *wxGetInstallPrefix(); // Return path to wxWin data (/usr/share/wx/%{version}) (Unices) WXDLLIMPEXP_BASE wxString wxGetDataDir(); #if wxUSE_GUI // Get the state of a key (true if pressed, false if not) // This is generally most useful getting the state of // the modifier or toggle keys. WXDLLIMPEXP_CORE bool wxGetKeyState(wxKeyCode key); // Don't synthesize KeyUp events holding down a key and producing // KeyDown events with autorepeat. On by default and always on // in wxMSW. WXDLLIMPEXP_CORE bool wxSetDetectableAutoRepeat( bool flag ); // Returns the current state of the mouse position, buttons and modifers WXDLLIMPEXP_CORE wxMouseState wxGetMouseState(); #endif // wxUSE_GUI // ---------------------------------------------------------------------------- // wxPlatform // ---------------------------------------------------------------------------- /* * Class to make it easier to specify platform-dependent values * * Examples: * long val = wxPlatform::If(wxMac, 1).ElseIf(wxGTK, 2).ElseIf(stPDA, 5).Else(3); * wxString strVal = wxPlatform::If(wxMac, wxT("Mac")).ElseIf(wxMSW, wxT("MSW")).Else(wxT("Other")); * * A custom platform symbol: * * #define stPDA 100 * #ifdef __WXWINCE__ * wxPlatform::AddPlatform(stPDA); * #endif * * long windowStyle = wxCAPTION | (long) wxPlatform::IfNot(stPDA, wxRESIZE_BORDER); * */ class WXDLLIMPEXP_BASE wxPlatform { public: wxPlatform() { Init(); } wxPlatform(const wxPlatform& platform) { Copy(platform); } void operator = (const wxPlatform& platform) { if (&platform != this) Copy(platform); } void Copy(const wxPlatform& platform); // Specify an optional default value wxPlatform(int defValue) { Init(); m_longValue = (long)defValue; } wxPlatform(long defValue) { Init(); m_longValue = defValue; } wxPlatform(const wxString& defValue) { Init(); m_stringValue = defValue; } wxPlatform(double defValue) { Init(); m_doubleValue = defValue; } static wxPlatform If(int platform, long value); static wxPlatform IfNot(int platform, long value); wxPlatform& ElseIf(int platform, long value); wxPlatform& ElseIfNot(int platform, long value); wxPlatform& Else(long value); static wxPlatform If(int platform, int value) { return If(platform, (long)value); } static wxPlatform IfNot(int platform, int value) { return IfNot(platform, (long)value); } wxPlatform& ElseIf(int platform, int value) { return ElseIf(platform, (long) value); } wxPlatform& ElseIfNot(int platform, int value) { return ElseIfNot(platform, (long) value); } wxPlatform& Else(int value) { return Else((long) value); } static wxPlatform If(int platform, double value); static wxPlatform IfNot(int platform, double value); wxPlatform& ElseIf(int platform, double value); wxPlatform& ElseIfNot(int platform, double value); wxPlatform& Else(double value); static wxPlatform If(int platform, const wxString& value); static wxPlatform IfNot(int platform, const wxString& value); wxPlatform& ElseIf(int platform, const wxString& value); wxPlatform& ElseIfNot(int platform, const wxString& value); wxPlatform& Else(const wxString& value); long GetInteger() const { return m_longValue; } const wxString& GetString() const { return m_stringValue; } double GetDouble() const { return m_doubleValue; } operator int() const { return (int) GetInteger(); } operator long() const { return GetInteger(); } operator double() const { return GetDouble(); } operator const wxString&() const { return GetString(); } static void AddPlatform(int platform); static bool Is(int platform); static void ClearPlatforms(); private: void Init() { m_longValue = 0; m_doubleValue = 0.0; } long m_longValue; double m_doubleValue; wxString m_stringValue; static wxArrayInt* sm_customPlatforms; }; /// Function for testing current platform inline bool wxPlatformIs(int platform) { return wxPlatform::Is(platform); } // ---------------------------------------------------------------------------- // Window ID management // ---------------------------------------------------------------------------- // Ensure subsequent IDs don't clash with this one WXDLLIMPEXP_BASE void wxRegisterId(long id); // Return the current ID WXDLLIMPEXP_BASE long wxGetCurrentId(); // Generate a unique ID WXDLLIMPEXP_BASE long wxNewId(); // ---------------------------------------------------------------------------- // Various conversions // ---------------------------------------------------------------------------- // Convert 2-digit hex number to decimal WXDLLIMPEXP_BASE int wxHexToDec(const wxString& buf); // Convert decimal integer to 2-character hex string WXDLLIMPEXP_BASE void wxDecToHex(int dec, wxChar *buf); WXDLLIMPEXP_BASE void wxDecToHex(int dec, char* ch1, char* ch2); WXDLLIMPEXP_BASE wxString wxDecToHex(int dec); // ---------------------------------------------------------------------------- // Process management // ---------------------------------------------------------------------------- // NB: for backwards compatibility reasons the values of wxEXEC_[A]SYNC *must* // be 0 and 1, don't change! enum { // execute the process asynchronously wxEXEC_ASYNC = 0, // execute it synchronously, i.e. wait until it finishes wxEXEC_SYNC = 1, // under Windows, don't hide the child even if it's IO is redirected (this // is done by default) wxEXEC_NOHIDE = 2, // under Unix, if the process is the group leader then passing wxKILL_CHILDREN to wxKill // kills all children as well as pid wxEXEC_MAKE_GROUP_LEADER = 4, // by default synchronous execution disables all program windows to avoid // that the user interacts with the program while the child process is // running, you can use this flag to prevent this from happening wxEXEC_NODISABLE = 8, // by default, the event loop is run while waiting for synchronous execution // to complete and this flag can be used to simply block the main process // until the child process finishes wxEXEC_NOEVENTS = 16, // convenient synonym for flags given system()-like behaviour wxEXEC_BLOCK = wxEXEC_SYNC | wxEXEC_NOEVENTS }; // Execute another program. // // If flags contain wxEXEC_SYNC, return -1 on failure and the exit code of the // process if everything was ok. Otherwise (i.e. if wxEXEC_ASYNC), return 0 on // failure and the PID of the launched process if ok. WXDLLIMPEXP_BASE long wxExecute(const wxString& command, int flags = wxEXEC_ASYNC, wxProcess *process = NULL); WXDLLIMPEXP_BASE long wxExecute(char **argv, int flags = wxEXEC_ASYNC, wxProcess *process = NULL); #if wxUSE_UNICODE WXDLLIMPEXP_BASE long wxExecute(wchar_t **argv, int flags = wxEXEC_ASYNC, wxProcess *process = NULL); #endif // wxUSE_UNICODE // execute the command capturing its output into an array line by line, this is // always synchronous WXDLLIMPEXP_BASE long wxExecute(const wxString& command, wxArrayString& output, int flags = 0); // also capture stderr (also synchronous) WXDLLIMPEXP_BASE long wxExecute(const wxString& command, wxArrayString& output, wxArrayString& error, int flags = 0); #if defined(__WXMSW__) && wxUSE_IPC // ask a DDE server to execute the DDE request with given parameters WXDLLIMPEXP_BASE bool wxExecuteDDE(const wxString& ddeServer, const wxString& ddeTopic, const wxString& ddeCommand); #endif // __WXMSW__ && wxUSE_IPC enum wxSignal { wxSIGNONE = 0, // verify if the process exists under Unix wxSIGHUP, wxSIGINT, wxSIGQUIT, wxSIGILL, wxSIGTRAP, wxSIGABRT, wxSIGIOT = wxSIGABRT, // another name wxSIGEMT, wxSIGFPE, wxSIGKILL, wxSIGBUS, wxSIGSEGV, wxSIGSYS, wxSIGPIPE, wxSIGALRM, wxSIGTERM // further signals are different in meaning between different Unix systems }; enum wxKillError { wxKILL_OK, // no error wxKILL_BAD_SIGNAL, // no such signal wxKILL_ACCESS_DENIED, // permission denied wxKILL_NO_PROCESS, // no such process wxKILL_ERROR // another, unspecified error }; enum wxKillFlags { wxKILL_NOCHILDREN = 0, // don't kill children wxKILL_CHILDREN = 1 // kill children }; enum wxShutdownFlags { wxSHUTDOWN_FORCE = 1,// can be combined with other flags (MSW-only) wxSHUTDOWN_POWEROFF = 2,// power off the computer wxSHUTDOWN_REBOOT = 4,// shutdown and reboot wxSHUTDOWN_LOGOFF = 8 // close session (currently MSW-only) }; // Shutdown or reboot the PC WXDLLIMPEXP_BASE bool wxShutdown(int flags = wxSHUTDOWN_POWEROFF); // send the given signal to the process (only NONE and KILL are supported under // Windows, all others mean TERM), return 0 if ok and -1 on error // // return detailed error in rc if not NULL WXDLLIMPEXP_BASE int wxKill(long pid, wxSignal sig = wxSIGTERM, wxKillError *rc = NULL, int flags = wxKILL_NOCHILDREN); // Execute a command in an interactive shell window (always synchronously) // If no command then just the shell WXDLLIMPEXP_BASE bool wxShell(const wxString& command = wxEmptyString); // As wxShell(), but must give a (non interactive) command and its output will // be returned in output array WXDLLIMPEXP_BASE bool wxShell(const wxString& command, wxArrayString& output); // Sleep for nSecs seconds WXDLLIMPEXP_BASE void wxSleep(int nSecs); // Sleep for a given amount of milliseconds WXDLLIMPEXP_BASE void wxMilliSleep(unsigned long milliseconds); // Sleep for a given amount of microseconds WXDLLIMPEXP_BASE void wxMicroSleep(unsigned long microseconds); #if WXWIN_COMPATIBILITY_2_8 // Sleep for a given amount of milliseconds (old, bad name), use wxMilliSleep wxDEPRECATED( WXDLLIMPEXP_BASE void wxUsleep(unsigned long milliseconds) ); #endif // Get the process id of the current process WXDLLIMPEXP_BASE unsigned long wxGetProcessId(); // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX) WXDLLIMPEXP_BASE wxMemorySize wxGetFreeMemory(); #if wxUSE_ON_FATAL_EXCEPTION // should wxApp::OnFatalException() be called? WXDLLIMPEXP_BASE bool wxHandleFatalExceptions(bool doit = true); #endif // wxUSE_ON_FATAL_EXCEPTION // ---------------------------------------------------------------------------- // Environment variables // ---------------------------------------------------------------------------- // returns true if variable exists (value may be NULL if you just want to check // for this) WXDLLIMPEXP_BASE bool wxGetEnv(const wxString& var, wxString *value); // set the env var name to the given value, return true on success WXDLLIMPEXP_BASE bool wxSetEnv(const wxString& var, const wxString& value); // remove the env var from environment WXDLLIMPEXP_BASE bool wxUnsetEnv(const wxString& var); #if WXWIN_COMPATIBILITY_2_8 inline bool wxSetEnv(const wxString& var, const char *value) { return wxSetEnv(var, wxString(value)); } inline bool wxSetEnv(const wxString& var, const wchar_t *value) { return wxSetEnv(var, wxString(value)); } template inline bool wxSetEnv(const wxString& var, const wxCharTypeBuffer& value) { return wxSetEnv(var, wxString(value)); } inline bool wxSetEnv(const wxString& var, const wxCStrData& value) { return wxSetEnv(var, wxString(value)); } // this one is for passing NULL directly - don't use it, use wxUnsetEnv instead wxDEPRECATED( inline bool wxSetEnv(const wxString& var, int value) ); inline bool wxSetEnv(const wxString& var, int value) { wxASSERT_MSG( value == 0, "using non-NULL integer as string?" ); wxUnusedVar(value); // fix unused parameter warning in release build return wxUnsetEnv(var); } #endif // WXWIN_COMPATIBILITY_2_8 // ---------------------------------------------------------------------------- // Network and username functions. // ---------------------------------------------------------------------------- // NB: "char *" functions are deprecated, use wxString ones! // Get eMail address WXDLLIMPEXP_BASE bool wxGetEmailAddress(wxChar *buf, int maxSize); WXDLLIMPEXP_BASE wxString wxGetEmailAddress(); // Get hostname. WXDLLIMPEXP_BASE bool wxGetHostName(wxChar *buf, int maxSize); WXDLLIMPEXP_BASE wxString wxGetHostName(); // Get FQDN WXDLLIMPEXP_BASE wxString wxGetFullHostName(); WXDLLIMPEXP_BASE bool wxGetFullHostName(wxChar *buf, int maxSize); // Get user ID e.g. jacs (this is known as login name under Unix) WXDLLIMPEXP_BASE bool wxGetUserId(wxChar *buf, int maxSize); WXDLLIMPEXP_BASE wxString wxGetUserId(); // Get user name e.g. Julian Smart WXDLLIMPEXP_BASE bool wxGetUserName(wxChar *buf, int maxSize); WXDLLIMPEXP_BASE wxString wxGetUserName(); // Get current Home dir and copy to dest (returns pstr->c_str()) WXDLLIMPEXP_BASE wxString wxGetHomeDir(); WXDLLIMPEXP_BASE const wxChar* wxGetHomeDir(wxString *pstr); // Get the user's (by default use the current user name) home dir, // return empty string on error WXDLLIMPEXP_BASE wxString wxGetUserHome(const wxString& user = wxEmptyString); #if wxUSE_LONGLONG typedef wxLongLong wxDiskspaceSize_t; #else typedef long wxDiskspaceSize_t; #endif // get number of total/free bytes on the disk where path belongs WXDLLIMPEXP_BASE bool wxGetDiskSpace(const wxString& path, wxDiskspaceSize_t *pTotal = NULL, wxDiskspaceSize_t *pFree = NULL); extern "C" { typedef int (wxCMPFUNC_CONV *CMPFUNCDATA)(const void* pItem1, const void* pItem2, const void* user_data); } WXDLLIMPEXP_BASE void wxQsort(void *const pbase, size_t total_elems, size_t size, CMPFUNCDATA cmp, const void* user_data); #if wxUSE_GUI // GUI only things from now on // ---------------------------------------------------------------------------- // Launch default browser // ---------------------------------------------------------------------------- // flags for wxLaunchDefaultBrowser enum { wxBROWSER_NEW_WINDOW = 0x01, wxBROWSER_NOBUSYCURSOR = 0x02 }; // Launch url in the user's default internet browser WXDLLIMPEXP_CORE bool wxLaunchDefaultBrowser(const wxString& url, int flags = 0); // Launch document in the user's default application WXDLLIMPEXP_CORE bool wxLaunchDefaultApplication(const wxString& path, int flags = 0); // ---------------------------------------------------------------------------- // Menu accelerators related things // ---------------------------------------------------------------------------- // flags for wxStripMenuCodes enum { // strip '&' characters wxStrip_Mnemonics = 1, // strip everything after '\t' wxStrip_Accel = 2, // strip everything (this is the default) wxStrip_All = wxStrip_Mnemonics | wxStrip_Accel }; // strip mnemonics and/or accelerators from the label WXDLLIMPEXP_CORE wxString wxStripMenuCodes(const wxString& str, int flags = wxStrip_All); #if WXWIN_COMPATIBILITY_2_6 // obsolete and deprecated version, do not use, use the above overload instead wxDEPRECATED( WXDLLIMPEXP_CORE wxChar* wxStripMenuCodes(const wxChar *in, wxChar *out = NULL) ); #if wxUSE_ACCEL class WXDLLIMPEXP_FWD_CORE wxAcceleratorEntry; // use wxAcceleratorEntry::Create() or FromString() methods instead wxDEPRECATED( WXDLLIMPEXP_CORE wxAcceleratorEntry *wxGetAccelFromString(const wxString& label) ); #endif // wxUSE_ACCEL #endif // WXWIN_COMPATIBILITY_2_6 // ---------------------------------------------------------------------------- // Window search // ---------------------------------------------------------------------------- // Returns menu item id or wxNOT_FOUND if none. WXDLLIMPEXP_CORE int wxFindMenuItemId(wxFrame *frame, const wxString& menuString, const wxString& itemString); // Find the wxWindow at the given point. wxGenericFindWindowAtPoint // is always present but may be less reliable than a native version. WXDLLIMPEXP_CORE wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt); WXDLLIMPEXP_CORE wxWindow* wxFindWindowAtPoint(const wxPoint& pt); // NB: this function is obsolete, use wxWindow::FindWindowByLabel() instead // // Find the window/widget with the given title or label. // Pass a parent to begin the search from, or NULL to look through // all windows. WXDLLIMPEXP_CORE wxWindow* wxFindWindowByLabel(const wxString& title, wxWindow *parent = NULL); // NB: this function is obsolete, use wxWindow::FindWindowByName() instead // // Find window by name, and if that fails, by label. WXDLLIMPEXP_CORE wxWindow* wxFindWindowByName(const wxString& name, wxWindow *parent = NULL); // ---------------------------------------------------------------------------- // Message/event queue helpers // ---------------------------------------------------------------------------- // Yield to other apps/messages and disable user input WXDLLIMPEXP_CORE bool wxSafeYield(wxWindow *win = NULL, bool onlyIfNeeded = false); // Enable or disable input to all top level windows WXDLLIMPEXP_CORE void wxEnableTopLevelWindows(bool enable = true); // Check whether this window wants to process messages, e.g. Stop button // in long calculations. WXDLLIMPEXP_CORE bool wxCheckForInterrupt(wxWindow *wnd); // Consume all events until no more left WXDLLIMPEXP_CORE void wxFlushEvents(); // a class which disables all windows (except, may be, the given one) in its // ctor and enables them back in its dtor class WXDLLIMPEXP_CORE wxWindowDisabler { public: // this ctor conditionally disables all windows: if the argument is false, // it doesn't do anything wxWindowDisabler(bool disable = true); // ctor disables all windows except winToSkip wxWindowDisabler(wxWindow *winToSkip); // dtor enables back all windows disabled by the ctor ~wxWindowDisabler(); private: // disable all windows except the given one (used by both ctors) void DoDisable(wxWindow *winToSkip = NULL); wxWindowList *m_winDisabled; bool m_disabled; wxDECLARE_NO_COPY_CLASS(wxWindowDisabler); }; // ---------------------------------------------------------------------------- // Cursors // ---------------------------------------------------------------------------- // Set the cursor to the busy cursor for all windows WXDLLIMPEXP_CORE void wxBeginBusyCursor(const wxCursor *cursor = wxHOURGLASS_CURSOR); // Restore cursor to normal WXDLLIMPEXP_CORE void wxEndBusyCursor(); // true if we're between the above two calls WXDLLIMPEXP_CORE bool wxIsBusy(); // Convenience class so we can just create a wxBusyCursor object on the stack class WXDLLIMPEXP_CORE wxBusyCursor { public: wxBusyCursor(const wxCursor* cursor = wxHOURGLASS_CURSOR) { wxBeginBusyCursor(cursor); } ~wxBusyCursor() { wxEndBusyCursor(); } // FIXME: These two methods are currently only implemented (and needed?) // in wxGTK. BusyCursor handling should probably be moved to // common code since the wxGTK and wxMSW implementations are very // similar except for wxMSW using HCURSOR directly instead of // wxCursor.. -- RL. static const wxCursor &GetStoredCursor(); static const wxCursor GetBusyCursor(); }; void WXDLLIMPEXP_CORE wxGetMousePosition( int* x, int* y ); // MSW only: get user-defined resource from the .res file. // Returns NULL or newly-allocated memory, so use delete[] to clean up. #ifdef __WXMSW__ extern WXDLLIMPEXP_CORE const wxChar* wxUserResourceStr; WXDLLIMPEXP_CORE wxChar* wxLoadUserResource(const wxString& resourceName, const wxString& resourceType = wxUserResourceStr); #endif // MSW // ---------------------------------------------------------------------------- // X11 Display access // ---------------------------------------------------------------------------- #if defined(__X__) || defined(__WXGTK__) #ifdef __WXGTK__ WXDLLIMPEXP_CORE void *wxGetDisplay(); #endif #ifdef __X__ WXDLLIMPEXP_CORE WXDisplay *wxGetDisplay(); WXDLLIMPEXP_CORE bool wxSetDisplay(const wxString& display_name); WXDLLIMPEXP_CORE wxString wxGetDisplayName(); #endif // X or GTK+ // use this function instead of the functions above in implementation code inline struct _XDisplay *wxGetX11Display() { return (_XDisplay *)wxGetDisplay(); } #endif // X11 || wxGTK #endif // wxUSE_GUI // ---------------------------------------------------------------------------- // wxYield(): these functions are obsolete, please use wxApp methods instead! // ---------------------------------------------------------------------------- // avoid redeclaring this function here if it had been already declated by // wx/app.h, this results in warnings from g++ with -Wredundant-decls #ifndef wx_YIELD_DECLARED #define wx_YIELD_DECLARED // Yield to other apps/messages WXDLLIMPEXP_CORE bool wxYield(); #endif // wx_YIELD_DECLARED // Like wxYield, but fails silently if the yield is recursive. WXDLLIMPEXP_CORE bool wxYieldIfNeeded(); #endif // _WX_UTILSH__