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[wxWidgets.git] / include / wx / utils.h
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1/////////////////////////////////////////////////////////////////////////////
2// Name: utils.h
3// Purpose: Miscellaneous utilities
4// Author: Julian Smart
5// Modified by:
6// Created: 29/01/98
7// RCS-ID: $Id$
8// Copyright: (c) 1998 Julian Smart
3f4a0c5b 9// Licence: wxWindows license
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10/////////////////////////////////////////////////////////////////////////////
11
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12#ifndef _WX_UTILSH__
13#define _WX_UTILSH__
c801d85f 14
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15// ----------------------------------------------------------------------------
16// headers
17// ----------------------------------------------------------------------------
18
af49c4b8 19#if defined(__GNUG__) && !defined(__APPLE__)
d6b9496a 20 #pragma interface "utils.h"
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21#endif
22
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23#include "wx/object.h"
24#include "wx/list.h"
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25#include "wx/filefn.h"
26
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27// need this for wxGetDiskSpace() as we can't, unfortunately, forward declare
28// wxLongLong
29#include "wx/longlong.h"
30
c801d85f 31#ifdef __X__
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32 #include <dirent.h>
33 #include <unistd.h>
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34#endif
35
36#include <stdio.h>
37
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38// ----------------------------------------------------------------------------
39// Forward declaration
40// ----------------------------------------------------------------------------
41
42class WXDLLEXPORT wxProcess;
43class WXDLLEXPORT wxFrame;
e4b4d60e 44class WXDLLEXPORT wxWindow;
cd6ce4a9 45class WXDLLEXPORT wxWindowList;
59a12e90 46class WXDLLEXPORT wxPoint;
d6b9496a 47
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48// ----------------------------------------------------------------------------
49// Macros
50// ----------------------------------------------------------------------------
c801d85f 51
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52#define wxMax(a,b) (((a) > (b)) ? (a) : (b))
53#define wxMin(a,b) (((a) < (b)) ? (a) : (b))
c801d85f 54
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55// ----------------------------------------------------------------------------
56// String functions (deprecated, use wxString)
57// ----------------------------------------------------------------------------
58
8fd0d89b 59// Useful buffer (FIXME VZ: To be removed!!!)
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60// Now only needed in Mac and MSW ports
61#if !defined(__WXMOTIF__) && !defined(__WXGTK__) && !defined(__WXX11__) && !defined(__WXMGL__)
9d2f3c71 62WXDLLEXPORT_DATA(extern wxChar*) wxBuffer;
45ff6421 63#endif
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64
65// Make a copy of this string using 'new'
9d2f3c71 66WXDLLEXPORT wxChar* copystring(const wxChar *s);
c801d85f 67
2b5f62a0 68#if WXWIN_COMPATIBILITY_2
d6b9496a 69// Matches string one within string two regardless of case
bc87fd68 70WXDLLEXPORT bool StringMatch(const wxChar *one, const wxChar *two, bool subString = TRUE, bool exact = FALSE);
2b5f62a0 71#endif
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72
73// A shorter way of using strcmp
9d2f3c71 74#define wxStringEq(s1, s2) (s1 && s2 && (wxStrcmp(s1, s2) == 0))
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75
76// ----------------------------------------------------------------------------
77// Miscellaneous functions
78// ----------------------------------------------------------------------------
79
80// Sound the bell
e90c1d2a 81WXDLLEXPORT void wxBell();
d6b9496a 82
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83// Get OS description as a user-readable string
84WXDLLEXPORT wxString wxGetOsDescription();
85
d6b9496a 86// Get OS version
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87WXDLLEXPORT int wxGetOsVersion(int *majorVsn = (int *) NULL,
88 int *minorVsn = (int *) NULL);
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89
90// Return a string with the current date/time
91WXDLLEXPORT wxString wxNow();
92
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93// Return path where wxWindows is installed (mostly useful in Unices)
94WXDLLEXPORT const wxChar *wxGetInstallPrefix();
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95// Return path to wxWin data (/usr/share/wx/%{version}) (Unices)
96WXDLLEXPORT wxString wxGetDataDir();
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97
98
e90c1d2a 99#if wxUSE_GUI
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100// Don't synthesize KeyUp events holding down a key and producing
101// KeyDown events with autorepeat. On by default and always on
102// in wxMSW.
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103WXDLLEXPORT bool wxSetDetectableAutoRepeat( bool flag );
104
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105// ----------------------------------------------------------------------------
106// Window ID management
107// ----------------------------------------------------------------------------
108
c801d85f 109// Generate a unique ID
afb74891 110WXDLLEXPORT long wxNewId();
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111#if !defined(NewId) && defined(WXWIN_COMPATIBILITY)
112 #define NewId wxNewId
113#endif
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114
115// Ensure subsequent IDs don't clash with this one
184b5d99 116WXDLLEXPORT void wxRegisterId(long id);
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117#if !defined(RegisterId) && defined(WXWIN_COMPATIBILITY)
118 #define RegisterId wxRegisterId
119#endif
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120
121// Return the current ID
afb74891 122WXDLLEXPORT long wxGetCurrentId();
c801d85f 123
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124#endif // wxUSE_GUI
125
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126// ----------------------------------------------------------------------------
127// Various conversions
128// ----------------------------------------------------------------------------
c801d85f 129
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130WXDLLEXPORT_DATA(extern const wxChar*) wxFloatToStringStr;
131WXDLLEXPORT_DATA(extern const wxChar*) wxDoubleToStringStr;
c801d85f 132
bc87fd68 133WXDLLEXPORT void StringToFloat(const wxChar *s, float *number);
9d2f3c71 134WXDLLEXPORT wxChar* FloatToString(float number, const wxChar *fmt = wxFloatToStringStr);
bc87fd68 135WXDLLEXPORT void StringToDouble(const wxChar *s, double *number);
9d2f3c71 136WXDLLEXPORT wxChar* DoubleToString(double number, const wxChar *fmt = wxDoubleToStringStr);
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137WXDLLEXPORT void StringToInt(const wxChar *s, int *number);
138WXDLLEXPORT void StringToLong(const wxChar *s, long *number);
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139WXDLLEXPORT wxChar* IntToString(int number);
140WXDLLEXPORT wxChar* LongToString(long number);
c801d85f 141
c801d85f 142// Convert 2-digit hex number to decimal
184b5d99 143WXDLLEXPORT int wxHexToDec(const wxString& buf);
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144
145// Convert decimal integer to 2-character hex string
9d2f3c71 146WXDLLEXPORT void wxDecToHex(int dec, wxChar *buf);
184b5d99 147WXDLLEXPORT wxString wxDecToHex(int dec);
c801d85f 148
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149// ----------------------------------------------------------------------------
150// Process management
151// ----------------------------------------------------------------------------
152
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153// NB: for backwars compatibility reasons the values of wxEXEC_[A]SYNC *must*
154// be 0 and 1, don't change!
155
156enum
157{
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158 // execute the process asynchronously
159 wxEXEC_ASYNC = 0,
160
161 // execute it synchronously, i.e. wait until it finishes
162 wxEXEC_SYNC = 1,
163
164 // under Windows, don't hide the child even if it's IO is redirected (this
165 // is done by default)
166 wxEXEC_NOHIDE = 2,
167
168 // under Unix, if the process is the group leader then killing -pid kills
169 // all children as well as pid
170 wxEXEC_MAKE_GROUP_LEADER = 4
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171};
172
173// Execute another program.
174//
175// If flags contain wxEXEC_SYNC, return -1 on failure and the exit code of the
176// process if everything was ok. Otherwise (i.e. if wxEXEC_ASYNC), return 0 on
177// failure and the PID of the launched process if ok.
0493ba13 178WXDLLEXPORT long wxExecute(wxChar **argv, int flags = wxEXEC_ASYNC,
c67daf87 179 wxProcess *process = (wxProcess *) NULL);
fbf456aa 180WXDLLEXPORT long wxExecute(const wxString& command, int flags = wxEXEC_ASYNC,
c67daf87 181 wxProcess *process = (wxProcess *) NULL);
c801d85f 182
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183// execute the command capturing its output into an array line by line, this is
184// always synchronous
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185WXDLLEXPORT long wxExecute(const wxString& command,
186 wxArrayString& output);
187
fbf456aa 188// also capture stderr (also synchronous)
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189WXDLLEXPORT long wxExecute(const wxString& command,
190 wxArrayString& output,
191 wxArrayString& error);
cd6ce4a9 192
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193enum wxSignal
194{
195 wxSIGNONE = 0, // verify if the process exists under Unix
196 wxSIGHUP,
197 wxSIGINT,
198 wxSIGQUIT,
199 wxSIGILL,
200 wxSIGTRAP,
201 wxSIGABRT,
202 wxSIGIOT = wxSIGABRT, // another name
203 wxSIGEMT,
204 wxSIGFPE,
205 wxSIGKILL,
206 wxSIGBUS,
207 wxSIGSEGV,
208 wxSIGSYS,
209 wxSIGPIPE,
210 wxSIGALRM,
211 wxSIGTERM
212
213 // further signals are different in meaning between different Unix systems
214};
c801d85f 215
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216enum wxKillError
217{
218 wxKILL_OK, // no error
219 wxKILL_BAD_SIGNAL, // no such signal
220 wxKILL_ACCESS_DENIED, // permission denied
221 wxKILL_NO_PROCESS, // no such process
222 wxKILL_ERROR // another, unspecified error
223};
224
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225enum wxShutdownFlags
226{
227 wxSHUTDOWN_POWEROFF, // power off the computer
228 wxSHUTDOWN_REBOOT // shutdown and reboot
229};
230
c1cb4153 231// Shutdown or reboot the PC
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232WXDLLEXPORT bool wxShutdown(wxShutdownFlags wFlags);
233
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234// send the given signal to the process (only NONE and KILL are supported under
235// Windows, all others mean TERM), return 0 if ok and -1 on error
236//
237// return detailed error in rc if not NULL
238WXDLLEXPORT int wxKill(long pid,
239 wxSignal sig = wxSIGTERM,
240 wxKillError *rc = NULL);
c801d85f 241
2c8e4738 242// Execute a command in an interactive shell window (always synchronously)
c801d85f 243// If no command then just the shell
62448488 244WXDLLEXPORT bool wxShell(const wxString& command = wxEmptyString);
c801d85f 245
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246// As wxShell(), but must give a (non interactive) command and its output will
247// be returned in output array
248WXDLLEXPORT bool wxShell(const wxString& command, wxArrayString& output);
249
b568d04f 250// Sleep for nSecs seconds
184b5d99 251WXDLLEXPORT void wxSleep(int nSecs);
c801d85f 252
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253// Sleep for a given amount of milliseconds
254WXDLLEXPORT void wxUsleep(unsigned long milliseconds);
255
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256// Get the process id of the current process
257WXDLLEXPORT unsigned long wxGetProcessId();
258
c801d85f 259// Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
afb74891 260WXDLLEXPORT long wxGetFreeMemory();
c801d85f 261
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262// should wxApp::OnFatalException() be called?
263WXDLLEXPORT bool wxHandleFatalExceptions(bool doit = TRUE);
264
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265// ----------------------------------------------------------------------------
266// Environment variables
267// ----------------------------------------------------------------------------
268
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269// returns TRUE if variable exists (value may be NULL if you just want to check
270// for this)
271WXDLLEXPORT bool wxGetEnv(const wxString& var, wxString *value);
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272
273// set the env var name to the given value, return TRUE on success
274WXDLLEXPORT bool wxSetEnv(const wxString& var, const wxChar *value);
275
276// remove the env var from environment
277inline bool wxUnsetEnv(const wxString& var) { return wxSetEnv(var, NULL); }
278
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279// ----------------------------------------------------------------------------
280// Network and username functions.
281// ----------------------------------------------------------------------------
c801d85f 282
d6b9496a 283// NB: "char *" functions are deprecated, use wxString ones!
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284
285// Get eMail address
9d2f3c71 286WXDLLEXPORT bool wxGetEmailAddress(wxChar *buf, int maxSize);
d6b9496a 287WXDLLEXPORT wxString wxGetEmailAddress();
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288
289// Get hostname.
9d2f3c71 290WXDLLEXPORT bool wxGetHostName(wxChar *buf, int maxSize);
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291WXDLLEXPORT wxString wxGetHostName();
292
293// Get FQDN
294WXDLLEXPORT wxString wxGetFullHostName();
96c5bd7f 295WXDLLEXPORT bool wxGetFullHostName(wxChar *buf, int maxSize);
c801d85f 296
d6b9496a 297// Get user ID e.g. jacs (this is known as login name under Unix)
9d2f3c71 298WXDLLEXPORT bool wxGetUserId(wxChar *buf, int maxSize);
d6b9496a 299WXDLLEXPORT wxString wxGetUserId();
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300
301// Get user name e.g. Julian Smart
9d2f3c71 302WXDLLEXPORT bool wxGetUserName(wxChar *buf, int maxSize);
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303WXDLLEXPORT wxString wxGetUserName();
304
305// Get current Home dir and copy to dest (returns pstr->c_str())
c51deffc 306WXDLLEXPORT wxString wxGetHomeDir();
9d2f3c71 307WXDLLEXPORT const wxChar* wxGetHomeDir(wxString *pstr);
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308
309// Get the user's home dir (caller must copy --- volatile)
310// returns NULL is no HOME dir is known
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311#if defined(__UNIX__) && wxUSE_UNICODE
312WXDLLEXPORT const wxMB2WXbuf wxGetUserHome(const wxString& user = wxEmptyString);
313#else
9d2f3c71 314WXDLLEXPORT wxChar* wxGetUserHome(const wxString& user = wxEmptyString);
61ef57fc 315#endif
d6b9496a 316
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317// get number of total/free bytes on the disk where path belongs
318WXDLLEXPORT bool wxGetDiskSpace(const wxString& path,
319 wxLongLong *pTotal = NULL,
320 wxLongLong *pFree = NULL);
321
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322#if wxUSE_GUI // GUI only things from now on
323
d6b9496a 324// ----------------------------------------------------------------------------
974e8d94 325// Menu accelerators related things
d6b9496a 326// ----------------------------------------------------------------------------
c801d85f 327
bc87fd68 328WXDLLEXPORT wxChar* wxStripMenuCodes(const wxChar *in, wxChar *out = (wxChar *) NULL);
184b5d99 329WXDLLEXPORT wxString wxStripMenuCodes(const wxString& str);
c801d85f 330
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331#if wxUSE_ACCEL
332class WXDLLEXPORT wxAcceleratorEntry;
333WXDLLEXPORT wxAcceleratorEntry *wxGetAccelFromString(const wxString& label);
334#endif // wxUSE_ACCEL
335
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336// ----------------------------------------------------------------------------
337// Window search
338// ----------------------------------------------------------------------------
339
c801d85f 340// Returns menu item id or -1 if none.
184b5d99 341WXDLLEXPORT int wxFindMenuItemId(wxFrame *frame, const wxString& menuString, const wxString& itemString);
c801d85f 342
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343// Find the wxWindow at the given point. wxGenericFindWindowAtPoint
344// is always present but may be less reliable than a native version.
345WXDLLEXPORT wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt);
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346WXDLLEXPORT wxWindow* wxFindWindowAtPoint(const wxPoint& pt);
347
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348// NB: this function is obsolete, use wxWindow::FindWindowByLabel() instead
349//
350// Find the window/widget with the given title or label.
351// Pass a parent to begin the search from, or NULL to look through
352// all windows.
353WXDLLEXPORT wxWindow* wxFindWindowByLabel(const wxString& title, wxWindow *parent = (wxWindow *) NULL);
354
355// NB: this function is obsolete, use wxWindow::FindWindowByName() instead
356//
357// Find window by name, and if that fails, by label.
358WXDLLEXPORT wxWindow* wxFindWindowByName(const wxString& name, wxWindow *parent = (wxWindow *) NULL);
359
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360// ----------------------------------------------------------------------------
361// Message/event queue helpers
362// ----------------------------------------------------------------------------
c801d85f 363
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364// NB: these functions are obsolete, please use wxApp methods instead!
365
c801d85f 366// Yield to other apps/messages
afb74891 367WXDLLEXPORT bool wxYield();
c801d85f 368
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369// Like wxYield, but fails silently if the yield is recursive.
370WXDLLEXPORT bool wxYieldIfNeeded();
371
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372// Yield to other apps/messages and disable user input
373WXDLLEXPORT bool wxSafeYield(wxWindow *win = NULL);
374
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375// Enable or disable input to all top level windows
376WXDLLEXPORT void wxEnableTopLevelWindows(bool enable = TRUE);
377
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378// Check whether this window wants to process messages, e.g. Stop button
379// in long calculations.
380WXDLLEXPORT bool wxCheckForInterrupt(wxWindow *wnd);
381
382// Consume all events until no more left
383WXDLLEXPORT void wxFlushEvents();
384
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385// a class which disables all windows (except, may be, thegiven one) in its
386// ctor and enables them back in its dtor
387class WXDLLEXPORT wxWindowDisabler
388{
389public:
390 wxWindowDisabler(wxWindow *winToSkip = (wxWindow *)NULL);
391 ~wxWindowDisabler();
392
393private:
394 wxWindowList *m_winDisabled;
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395
396 DECLARE_NO_COPY_CLASS(wxWindowDisabler)
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397};
398
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399// ----------------------------------------------------------------------------
400// Cursors
401// ----------------------------------------------------------------------------
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402
403// Set the cursor to the busy cursor for all windows
404class WXDLLEXPORT wxCursor;
405WXDLLEXPORT_DATA(extern wxCursor*) wxHOURGLASS_CURSOR;
184b5d99 406WXDLLEXPORT void wxBeginBusyCursor(wxCursor *cursor = wxHOURGLASS_CURSOR);
e2a6f233 407
c801d85f 408// Restore cursor to normal
afb74891 409WXDLLEXPORT void wxEndBusyCursor();
d6b9496a 410
c801d85f 411// TRUE if we're between the above two calls
afb74891 412WXDLLEXPORT bool wxIsBusy();
c801d85f 413
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414// Convenience class so we can just create a wxBusyCursor object on the stack
415class WXDLLEXPORT wxBusyCursor
416{
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417public:
418 wxBusyCursor(wxCursor* cursor = wxHOURGLASS_CURSOR)
419 { wxBeginBusyCursor(cursor); }
f6bcfd97 420 ~wxBusyCursor()
afb74891 421 { wxEndBusyCursor(); }
e2a6f233 422
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423 // FIXME: These two methods are currently only implemented (and needed?)
424 // in wxGTK. BusyCursor handling should probably be moved to
425 // common code since the wxGTK and wxMSW implementations are very
426 // similar except for wxMSW using HCURSOR directly instead of
427 // wxCursor.. -- RL.
428 static const wxCursor &GetStoredCursor();
429 static const wxCursor GetBusyCursor();
430};
c801d85f 431
c801d85f 432
d6b9496a 433// ----------------------------------------------------------------------------
c801d85f 434// Reading and writing resources (eg WIN.INI, .Xdefaults)
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435// ----------------------------------------------------------------------------
436
47d67540 437#if wxUSE_RESOURCES
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438WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, const wxString& value, const wxString& file = wxEmptyString);
439WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, float value, const wxString& file = wxEmptyString);
440WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, long value, const wxString& file = wxEmptyString);
441WXDLLEXPORT bool wxWriteResource(const wxString& section, const wxString& entry, int value, const wxString& file = wxEmptyString);
442
9d2f3c71 443WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, wxChar **value, const wxString& file = wxEmptyString);
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444WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, float *value, const wxString& file = wxEmptyString);
445WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, long *value, const wxString& file = wxEmptyString);
446WXDLLEXPORT bool wxGetResource(const wxString& section, const wxString& entry, int *value, const wxString& file = wxEmptyString);
47d67540 447#endif // wxUSE_RESOURCES
c801d85f 448
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449void WXDLLEXPORT wxGetMousePosition( int* x, int* y );
450
451// MSW only: get user-defined resource from the .res file.
452// Returns NULL or newly-allocated memory, so use delete[] to clean up.
2049ba38 453#ifdef __WXMSW__
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454 WXDLLEXPORT extern const wxChar* wxUserResourceStr;
455 WXDLLEXPORT wxChar* wxLoadUserResource(const wxString& resourceName, const wxString& resourceType = wxUserResourceStr);
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456#endif // MSW
457
458// ----------------------------------------------------------------------------
459// Display and colorss (X only)
460// ----------------------------------------------------------------------------
c801d85f 461
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462#ifdef __WXGTK__
463 void *wxGetDisplay();
464#endif
465
c801d85f 466#ifdef __X__
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467 WXDisplay *wxGetDisplay();
468 bool wxSetDisplay(const wxString& display_name);
469 wxString wxGetDisplayName();
d111a89a 470#endif // X or GTK+
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471
472#ifdef __X__
473
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474#ifdef __VMS__ // Xlib.h for VMS is not (yet) compatible with C++
475 // The resulting warnings are switched off here
476#pragma message disable nosimpint
477#endif
7266b672 478// #include <X11/Xlib.h>
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479#ifdef __VMS__
480#pragma message enable nosimpint
481#endif
c801d85f 482
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483#endif //__X__
484
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485#endif // wxUSE_GUI
486
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487// ----------------------------------------------------------------------------
488// Error message functions used by wxWindows (deprecated, use wxLog)
489// ----------------------------------------------------------------------------
490
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491#if WXWIN_COMPATIBILITY_2_2
492
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493// Format a message on the standard error (UNIX) or the debugging
494// stream (Windows)
f9b170bd 495WXDLLEXPORT void wxDebugMsg(const wxChar *fmt ...) ATTRIBUTE_PRINTF_1;
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496
497// Non-fatal error (continues)
498WXDLLEXPORT_DATA(extern const wxChar*) wxInternalErrorStr;
499WXDLLEXPORT void wxError(const wxString& msg, const wxString& title = wxInternalErrorStr);
500
501// Fatal error (exits)
502WXDLLEXPORT_DATA(extern const wxChar*) wxFatalErrorStr;
503WXDLLEXPORT void wxFatalError(const wxString& msg, const wxString& title = wxFatalErrorStr);
504
73deed44 505#endif // WXWIN_COMPATIBILITY_2_2
f6bcfd97 506
c801d85f 507#endif
34138703 508 // _WX_UTILSH__