62a9d04c7d
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@27842 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
517 lines
19 KiB
C++
517 lines
19 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: utils.h
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// Purpose: Miscellaneous utilities
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// Author: Julian Smart
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// Modified by:
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// Created: 29/01/98
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// RCS-ID: $Id$
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// Copyright: (c) 1998 Julian Smart
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_UTILSH__
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#define _WX_UTILSH__
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// ----------------------------------------------------------------------------
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// headers
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// ----------------------------------------------------------------------------
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#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) && !defined(__EMX__)
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// Some older compilers (such as EMX) cannot handle
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// #pragma interface/implementation correctly, iff
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// #pragma implementation is used in _two_ translation
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// units (as created by e.g. event.cpp compiled for
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// libwx_base and event.cpp compiled for libwx_gui_core).
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// So we must not use those pragmas for those compilers in
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// such files.
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#pragma interface "utils.h"
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#endif
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#include "wx/object.h"
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#include "wx/list.h"
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#include "wx/filefn.h"
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class WXDLLIMPEXP_BASE wxArrayString;
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// need this for wxGetDiskSpace() as we can't, unfortunately, forward declare
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// wxLongLong
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#include "wx/longlong.h"
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#ifdef __X__
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#include <dirent.h>
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#include <unistd.h>
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#endif
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#include <stdio.h>
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// ----------------------------------------------------------------------------
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// Forward declaration
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// ----------------------------------------------------------------------------
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class WXDLLIMPEXP_CORE wxProcess;
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class WXDLLIMPEXP_CORE wxFrame;
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class WXDLLIMPEXP_CORE wxWindow;
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class WXDLLIMPEXP_CORE wxWindowList;
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class WXDLLIMPEXP_CORE wxPoint;
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// ----------------------------------------------------------------------------
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// Macros
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// ----------------------------------------------------------------------------
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#define wxMax(a,b) (((a) > (b)) ? (a) : (b))
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#define wxMin(a,b) (((a) < (b)) ? (a) : (b))
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// ----------------------------------------------------------------------------
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// String functions (deprecated, use wxString)
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// ----------------------------------------------------------------------------
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// Make a copy of this string using 'new'
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#if WXWIN_COMPATIBILITY_2_4
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WXDLLIMPEXP_BASE wxChar* copystring(const wxChar *s);
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#endif
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// A shorter way of using strcmp
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#define wxStringEq(s1, s2) (s1 && s2 && (wxStrcmp(s1, s2) == 0))
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// ----------------------------------------------------------------------------
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// Miscellaneous functions
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// ----------------------------------------------------------------------------
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// Sound the bell
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WXDLLIMPEXP_BASE void wxBell();
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// Get OS description as a user-readable string
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WXDLLIMPEXP_BASE wxString wxGetOsDescription();
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// Get OS version
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WXDLLIMPEXP_BASE int wxGetOsVersion(int *majorVsn = (int *) NULL,
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int *minorVsn = (int *) NULL);
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// Return a string with the current date/time
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WXDLLIMPEXP_BASE wxString wxNow();
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// Return path where wxWidgets is installed (mostly useful in Unices)
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WXDLLIMPEXP_BASE const wxChar *wxGetInstallPrefix();
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// Return path to wxWin data (/usr/share/wx/%{version}) (Unices)
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WXDLLIMPEXP_BASE wxString wxGetDataDir();
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#if wxUSE_GUI
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// Get the state of a key (true if pressed, false if not)
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// This is generally most useful getting the state of
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// the modifier or toggle keys.
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WXDLLEXPORT bool wxGetKeyState(wxKeyCode key);
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// Don't synthesize KeyUp events holding down a key and producing
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// KeyDown events with autorepeat. On by default and always on
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// in wxMSW.
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WXDLLEXPORT bool wxSetDetectableAutoRepeat( bool flag );
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// ----------------------------------------------------------------------------
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// Window ID management
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// ----------------------------------------------------------------------------
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// Generate a unique ID
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WXDLLEXPORT long wxNewId();
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// Ensure subsequent IDs don't clash with this one
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WXDLLEXPORT void wxRegisterId(long id);
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// Return the current ID
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WXDLLEXPORT long wxGetCurrentId();
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#endif // wxUSE_GUI
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// ----------------------------------------------------------------------------
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// Various conversions
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// ----------------------------------------------------------------------------
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// these functions are deprecated, use wxString methods instead!
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#if WXWIN_COMPATIBILITY_2_4
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WXDLLIMPEXP_DATA_BASE(extern const wxChar*) wxFloatToStringStr;
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WXDLLIMPEXP_DATA_BASE(extern const wxChar*) wxDoubleToStringStr;
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WXDLLIMPEXP_BASE void StringToFloat(const wxChar *s, float *number);
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WXDLLIMPEXP_BASE wxChar* FloatToString(float number, const wxChar *fmt = wxFloatToStringStr);
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WXDLLIMPEXP_BASE void StringToDouble(const wxChar *s, double *number);
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WXDLLIMPEXP_BASE wxChar* DoubleToString(double number, const wxChar *fmt = wxDoubleToStringStr);
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WXDLLIMPEXP_BASE void StringToInt(const wxChar *s, int *number);
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WXDLLIMPEXP_BASE void StringToLong(const wxChar *s, long *number);
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WXDLLIMPEXP_BASE wxChar* IntToString(int number);
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WXDLLIMPEXP_BASE wxChar* LongToString(long number);
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#endif // WXWIN_COMPATIBILITY_2_4
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// Convert 2-digit hex number to decimal
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WXDLLIMPEXP_BASE int wxHexToDec(const wxString& buf);
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// Convert decimal integer to 2-character hex string
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WXDLLIMPEXP_BASE void wxDecToHex(int dec, wxChar *buf);
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WXDLLIMPEXP_BASE wxString wxDecToHex(int dec);
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// ----------------------------------------------------------------------------
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// Process management
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// ----------------------------------------------------------------------------
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// NB: for backwars compatibility reasons the values of wxEXEC_[A]SYNC *must*
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// be 0 and 1, don't change!
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enum
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{
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// execute the process asynchronously
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wxEXEC_ASYNC = 0,
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// execute it synchronously, i.e. wait until it finishes
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wxEXEC_SYNC = 1,
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// under Windows, don't hide the child even if it's IO is redirected (this
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// is done by default)
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wxEXEC_NOHIDE = 2,
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// under Unix, if the process is the group leader then killing -pid kills
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// all children as well as pid
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wxEXEC_MAKE_GROUP_LEADER = 4
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};
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// Execute another program.
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//
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// If flags contain wxEXEC_SYNC, return -1 on failure and the exit code of the
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// process if everything was ok. Otherwise (i.e. if wxEXEC_ASYNC), return 0 on
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// failure and the PID of the launched process if ok.
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WXDLLIMPEXP_BASE long wxExecute(wxChar **argv, int flags = wxEXEC_ASYNC,
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wxProcess *process = (wxProcess *) NULL);
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WXDLLIMPEXP_BASE long wxExecute(const wxString& command, int flags = wxEXEC_ASYNC,
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wxProcess *process = (wxProcess *) NULL);
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// execute the command capturing its output into an array line by line, this is
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// always synchronous
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WXDLLIMPEXP_BASE long wxExecute(const wxString& command,
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wxArrayString& output);
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// also capture stderr (also synchronous)
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WXDLLIMPEXP_BASE long wxExecute(const wxString& command,
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wxArrayString& output,
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wxArrayString& error);
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enum wxSignal
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{
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wxSIGNONE = 0, // verify if the process exists under Unix
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wxSIGHUP,
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wxSIGINT,
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wxSIGQUIT,
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wxSIGILL,
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wxSIGTRAP,
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wxSIGABRT,
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wxSIGIOT = wxSIGABRT, // another name
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wxSIGEMT,
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wxSIGFPE,
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wxSIGKILL,
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wxSIGBUS,
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wxSIGSEGV,
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wxSIGSYS,
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wxSIGPIPE,
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wxSIGALRM,
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wxSIGTERM
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// further signals are different in meaning between different Unix systems
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};
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enum wxKillError
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{
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wxKILL_OK, // no error
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wxKILL_BAD_SIGNAL, // no such signal
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wxKILL_ACCESS_DENIED, // permission denied
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wxKILL_NO_PROCESS, // no such process
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wxKILL_ERROR // another, unspecified error
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};
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enum wxShutdownFlags
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{
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wxSHUTDOWN_POWEROFF, // power off the computer
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wxSHUTDOWN_REBOOT // shutdown and reboot
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};
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// Shutdown or reboot the PC
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WXDLLIMPEXP_BASE bool wxShutdown(wxShutdownFlags wFlags);
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// send the given signal to the process (only NONE and KILL are supported under
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// Windows, all others mean TERM), return 0 if ok and -1 on error
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//
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// return detailed error in rc if not NULL
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WXDLLIMPEXP_BASE int wxKill(long pid,
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wxSignal sig = wxSIGTERM,
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wxKillError *rc = NULL);
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// Execute a command in an interactive shell window (always synchronously)
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// If no command then just the shell
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WXDLLIMPEXP_BASE bool wxShell(const wxString& command = wxEmptyString);
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// As wxShell(), but must give a (non interactive) command and its output will
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// be returned in output array
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WXDLLIMPEXP_BASE bool wxShell(const wxString& command, wxArrayString& output);
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// Sleep for nSecs seconds
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WXDLLIMPEXP_BASE void wxSleep(int nSecs);
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// Sleep for a given amount of milliseconds
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WXDLLIMPEXP_BASE void wxUsleep(unsigned long milliseconds);
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// Get the process id of the current process
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WXDLLIMPEXP_BASE unsigned long wxGetProcessId();
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// Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
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WXDLLIMPEXP_BASE long wxGetFreeMemory();
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// should wxApp::OnFatalException() be called?
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WXDLLIMPEXP_BASE bool wxHandleFatalExceptions(bool doit = TRUE);
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// ----------------------------------------------------------------------------
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// Environment variables
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// ----------------------------------------------------------------------------
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// returns TRUE if variable exists (value may be NULL if you just want to check
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// for this)
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WXDLLIMPEXP_BASE bool wxGetEnv(const wxString& var, wxString *value);
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// set the env var name to the given value, return TRUE on success
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WXDLLIMPEXP_BASE bool wxSetEnv(const wxString& var, const wxChar *value);
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// remove the env var from environment
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inline bool wxUnsetEnv(const wxString& var) { return wxSetEnv(var, NULL); }
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// ----------------------------------------------------------------------------
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// Network and username functions.
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// ----------------------------------------------------------------------------
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// NB: "char *" functions are deprecated, use wxString ones!
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// Get eMail address
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WXDLLIMPEXP_BASE bool wxGetEmailAddress(wxChar *buf, int maxSize);
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WXDLLIMPEXP_BASE wxString wxGetEmailAddress();
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// Get hostname.
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WXDLLIMPEXP_BASE bool wxGetHostName(wxChar *buf, int maxSize);
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WXDLLIMPEXP_BASE wxString wxGetHostName();
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// Get FQDN
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WXDLLIMPEXP_BASE wxString wxGetFullHostName();
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WXDLLIMPEXP_BASE bool wxGetFullHostName(wxChar *buf, int maxSize);
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// Get user ID e.g. jacs (this is known as login name under Unix)
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WXDLLIMPEXP_BASE bool wxGetUserId(wxChar *buf, int maxSize);
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WXDLLIMPEXP_BASE wxString wxGetUserId();
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// Get user name e.g. Julian Smart
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WXDLLIMPEXP_BASE bool wxGetUserName(wxChar *buf, int maxSize);
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WXDLLIMPEXP_BASE wxString wxGetUserName();
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// Get current Home dir and copy to dest (returns pstr->c_str())
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WXDLLIMPEXP_BASE wxString wxGetHomeDir();
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WXDLLIMPEXP_BASE const wxChar* wxGetHomeDir(wxString *pstr);
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// Get the user's home dir (caller must copy --- volatile)
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// returns NULL is no HOME dir is known
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#if defined(__UNIX__) && wxUSE_UNICODE
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WXDLLIMPEXP_BASE const wxMB2WXbuf wxGetUserHome(const wxString& user = wxEmptyString);
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#else
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WXDLLIMPEXP_BASE wxChar* wxGetUserHome(const wxString& user = wxEmptyString);
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#endif
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// get number of total/free bytes on the disk where path belongs
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WXDLLIMPEXP_BASE bool wxGetDiskSpace(const wxString& path,
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wxLongLong *pTotal = NULL,
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wxLongLong *pFree = NULL);
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#if wxUSE_GUI // GUI only things from now on
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// ----------------------------------------------------------------------------
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// Menu accelerators related things
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// ----------------------------------------------------------------------------
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WXDLLEXPORT wxChar* wxStripMenuCodes(const wxChar *in, wxChar *out = (wxChar *) NULL);
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WXDLLEXPORT wxString wxStripMenuCodes(const wxString& str);
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#if wxUSE_ACCEL
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class WXDLLEXPORT wxAcceleratorEntry;
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WXDLLEXPORT wxAcceleratorEntry *wxGetAccelFromString(const wxString& label);
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#endif // wxUSE_ACCEL
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// ----------------------------------------------------------------------------
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// Window search
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// ----------------------------------------------------------------------------
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// Returns menu item id or -1 if none.
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WXDLLEXPORT int wxFindMenuItemId(wxFrame *frame, const wxString& menuString, const wxString& itemString);
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// Find the wxWindow at the given point. wxGenericFindWindowAtPoint
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// is always present but may be less reliable than a native version.
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WXDLLEXPORT wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt);
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WXDLLEXPORT wxWindow* wxFindWindowAtPoint(const wxPoint& pt);
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// NB: this function is obsolete, use wxWindow::FindWindowByLabel() instead
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//
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// Find the window/widget with the given title or label.
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// Pass a parent to begin the search from, or NULL to look through
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// all windows.
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WXDLLEXPORT wxWindow* wxFindWindowByLabel(const wxString& title, wxWindow *parent = (wxWindow *) NULL);
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// NB: this function is obsolete, use wxWindow::FindWindowByName() instead
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//
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// Find window by name, and if that fails, by label.
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WXDLLEXPORT wxWindow* wxFindWindowByName(const wxString& name, wxWindow *parent = (wxWindow *) NULL);
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// ----------------------------------------------------------------------------
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// Message/event queue helpers
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// ----------------------------------------------------------------------------
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// Yield to other apps/messages and disable user input
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WXDLLEXPORT bool wxSafeYield(wxWindow *win = NULL, bool onlyIfNeeded = FALSE);
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// Enable or disable input to all top level windows
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WXDLLEXPORT void wxEnableTopLevelWindows(bool enable = TRUE);
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// Check whether this window wants to process messages, e.g. Stop button
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// in long calculations.
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WXDLLEXPORT bool wxCheckForInterrupt(wxWindow *wnd);
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// Consume all events until no more left
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WXDLLEXPORT void wxFlushEvents();
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// a class which disables all windows (except, may be, thegiven one) in its
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// ctor and enables them back in its dtor
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class WXDLLEXPORT wxWindowDisabler
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{
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public:
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wxWindowDisabler(wxWindow *winToSkip = (wxWindow *)NULL);
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~wxWindowDisabler();
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private:
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wxWindowList *m_winDisabled;
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DECLARE_NO_COPY_CLASS(wxWindowDisabler)
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};
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// ----------------------------------------------------------------------------
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// Cursors
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// ----------------------------------------------------------------------------
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// Set the cursor to the busy cursor for all windows
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class WXDLLEXPORT wxCursor;
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WXDLLEXPORT_DATA(extern wxCursor*) wxHOURGLASS_CURSOR;
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WXDLLEXPORT void wxBeginBusyCursor(wxCursor *cursor = wxHOURGLASS_CURSOR);
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// Restore cursor to normal
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WXDLLEXPORT void wxEndBusyCursor();
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// TRUE if we're between the above two calls
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WXDLLEXPORT bool wxIsBusy();
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// Convenience class so we can just create a wxBusyCursor object on the stack
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class WXDLLEXPORT wxBusyCursor
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{
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public:
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wxBusyCursor(wxCursor* cursor = wxHOURGLASS_CURSOR)
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{ wxBeginBusyCursor(cursor); }
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~wxBusyCursor()
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{ wxEndBusyCursor(); }
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// FIXME: These two methods are currently only implemented (and needed?)
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// in wxGTK. BusyCursor handling should probably be moved to
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// common code since the wxGTK and wxMSW implementations are very
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// similar except for wxMSW using HCURSOR directly instead of
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// wxCursor.. -- RL.
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static const wxCursor &GetStoredCursor();
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static const wxCursor GetBusyCursor();
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};
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// ----------------------------------------------------------------------------
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// Reading and writing resources (eg WIN.INI, .Xdefaults)
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// ----------------------------------------------------------------------------
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#if wxUSE_RESOURCES
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WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file = wxEmptyString);
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WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file = wxEmptyString);
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WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file = wxEmptyString);
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WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file = wxEmptyString);
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WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file = wxEmptyString);
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WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file = wxEmptyString);
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WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file = wxEmptyString);
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WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file = wxEmptyString);
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#endif // wxUSE_RESOURCES
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void WXDLLEXPORT wxGetMousePosition( int* x, int* y );
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// MSW only: get user-defined resource from the .res file.
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// Returns NULL or newly-allocated memory, so use delete[] to clean up.
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#ifdef __WXMSW__
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WXDLLEXPORT extern const wxChar* wxUserResourceStr;
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WXDLLEXPORT wxChar* wxLoadUserResource(const wxString& resourceName, const wxString& resourceType = wxUserResourceStr);
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#endif // MSW
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// ----------------------------------------------------------------------------
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// Display and colorss (X only)
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// ----------------------------------------------------------------------------
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#ifdef __WXGTK__
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void *wxGetDisplay();
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#endif
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#ifdef __X__
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WXDisplay *wxGetDisplay();
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bool wxSetDisplay(const wxString& display_name);
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wxString wxGetDisplayName();
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#endif // X or GTK+
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#ifdef __X__
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#ifdef __VMS__ // Xlib.h for VMS is not (yet) compatible with C++
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// The resulting warnings are switched off here
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#pragma message disable nosimpint
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#endif
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// #include <X11/Xlib.h>
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#ifdef __VMS__
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#pragma message enable nosimpint
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#endif
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#endif //__X__
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#endif // wxUSE_GUI
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// ----------------------------------------------------------------------------
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// wxYield(): these functions are obsolete, please use wxApp methods instead!
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// ----------------------------------------------------------------------------
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// Yield to other apps/messages
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WXDLLIMPEXP_BASE bool wxYield();
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// Like wxYield, but fails silently if the yield is recursive.
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WXDLLIMPEXP_BASE bool wxYieldIfNeeded();
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// ----------------------------------------------------------------------------
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// Error message functions used by wxWidgets (deprecated, use wxLog)
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// ----------------------------------------------------------------------------
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#if WXWIN_COMPATIBILITY_2_2
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// Format a message on the standard error (UNIX) or the debugging
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// stream (Windows)
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WXDLLIMPEXP_BASE void wxDebugMsg(const wxChar *fmt ...) ATTRIBUTE_PRINTF_1;
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// Non-fatal error (continues)
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WXDLLIMPEXP_DATA_BASE(extern const wxChar*) wxInternalErrorStr;
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WXDLLIMPEXP_BASE void wxError(const wxString& msg, const wxString& title = wxInternalErrorStr);
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// Fatal error (exits)
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WXDLLIMPEXP_DATA_BASE(extern const wxChar*) wxFatalErrorStr;
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WXDLLIMPEXP_BASE void wxFatalError(const wxString& msg, const wxString& title = wxFatalErrorStr);
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#endif // WXWIN_COMPATIBILITY_2_2
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#endif
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// _WX_UTILSH__
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