include/wx/utils.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        wx/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
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 #ifndef _WX_UTILSH__
  13 #define _WX_UTILSH__
  14
  15 // ----------------------------------------------------------------------------
  16 // headers
  17 // ----------------------------------------------------------------------------
  18
  19 #include "wx/object.h"
  20 #include "wx/list.h"
  21 #include "wx/filefn.h"
  22 #if wxUSE_GUI
  23     #include "wx/gdicmn.h"
  24 #endif
  25
  26 class WXDLLIMPEXP_BASE wxArrayString;
  27 class WXDLLIMPEXP_BASE wxArrayInt;
  28
  29 // need this for wxGetDiskSpace() as we can't, unfortunately, forward declare
  30 // wxLongLong
  31 #include "wx/longlong.h"
  32
  33 // need for wxOperatingSystemId
  34 #include "wx/platinfo.h"
  35
  36 #ifdef __WATCOMC__
  37     #include <direct.h>
  38 #elif defined(__X__)
  39     #include <dirent.h>
  40     #include <unistd.h>
  41 #endif
  42
  43 #include <stdio.h>
  44
  45 // ----------------------------------------------------------------------------
  46 // Forward declaration
  47 // ----------------------------------------------------------------------------
  48
  49 class WXDLLIMPEXP_CORE wxProcess;
  50 class WXDLLIMPEXP_CORE wxFrame;
  51 class WXDLLIMPEXP_CORE wxWindow;
  52 class WXDLLIMPEXP_CORE wxWindowList;
  53
  54 // ----------------------------------------------------------------------------
  55 // Macros
  56 // ----------------------------------------------------------------------------
  57
  58 #define wxMax(a,b)            (((a) > (b)) ? (a) : (b))
  59 #define wxMin(a,b)            (((a) < (b)) ? (a) : (b))
  60 #define wxClip(a,b,c)         (((a) < (b)) ? (b) : (((a) > (c)) ? (c) : (a)))
  61
  62 // wxGetFreeMemory can return huge amount of memory on 32-bit platforms as well
  63 // so to always use long long for its result type on all platforms which
  64 // support it
  65 #if wxUSE_LONGLONG
  66     typedef wxLongLong wxMemorySize;
  67 #else
  68     typedef long wxMemorySize;
  69 #endif
  70
  71 // ----------------------------------------------------------------------------
  72 // String functions (deprecated, use wxString)
  73 // ----------------------------------------------------------------------------
  74
  75 // A shorter way of using strcmp
  76 #define wxStringEq(s1, s2) (s1 && s2 && (wxStrcmp(s1, s2) == 0))
  77
  78 // ----------------------------------------------------------------------------
  79 // Miscellaneous functions
  80 // ----------------------------------------------------------------------------
  81
  82 // Sound the bell
  83 #if !defined __EMX__ && \
  84     (defined __WXMOTIF__ || defined __WXGTK__ || defined __WXX11__)
  85 WXDLLIMPEXP_CORE void wxBell();
  86 #else
  87 WXDLLIMPEXP_BASE void wxBell();
  88 #endif
  89
  90 // Get OS description as a user-readable string
  91 WXDLLIMPEXP_BASE wxString wxGetOsDescription();
  92
  93 // Get OS version
  94 WXDLLIMPEXP_BASE wxOperatingSystemId wxGetOsVersion(int *majorVsn = (int *) NULL,
  95                                                     int *minorVsn = (int *) NULL);
  96
  97 // Get platform endianness
  98 WXDLLIMPEXP_BASE bool wxIsPlatformLittleEndian();
  99
 100 // Get platform architecture
 101 WXDLLIMPEXP_BASE bool wxIsPlatform64Bit();
 102
 103 // Return a string with the current date/time
 104 WXDLLIMPEXP_BASE wxString wxNow();
 105
 106 // Return path where wxWidgets is installed (mostly useful in Unices)
 107 WXDLLIMPEXP_BASE const wxChar *wxGetInstallPrefix();
 108 // Return path to wxWin data (/usr/share/wx/%{version}) (Unices)
 109 WXDLLIMPEXP_BASE wxString wxGetDataDir();
 110
 111 /*
 112  * Class to make it easier to specify platform-dependent values
 113  *
 114  * Examples:
 115  *  long val = wxPlatform::If(wxMac, 1).ElseIf(wxGTK, 2).ElseIf(stPDA, 5).Else(3);
 116  *  wxString strVal = wxPlatform::If(wxMac, wxT("Mac")).ElseIf(wxMSW, wxT("MSW")).Else(wxT("Other"));
 117  *
 118  * A custom platform symbol:
 119  *
 120  *  #define stPDA 100
 121  *  #ifdef __WXWINCE__
 122  *      wxPlatform::AddPlatform(stPDA);
 123  *  #endif
 124  *
 125  *  long windowStyle = wxCAPTION | (long) wxPlatform::IfNot(stPDA, wxRESIZE_BORDER);
 126  *
 127  */
 128
 129 class WXDLLIMPEXP_BASE wxPlatform
 130 {
 131 public:
 132     wxPlatform() { Init(); }
 133     wxPlatform(const wxPlatform& platform) { Copy(platform); }
 134     void operator = (const wxPlatform& platform) { Copy(platform); }
 135     void Copy(const wxPlatform& platform);
 136
 137     // Specify an optional default value
 138     wxPlatform(int defValue) { Init(); m_longValue = (long)defValue; }
 139     wxPlatform(long defValue) { Init(); m_longValue = defValue; }
 140     wxPlatform(const wxString& defValue) { Init(); m_stringValue = defValue; }
 141     wxPlatform(double defValue) { Init(); m_doubleValue = defValue; }
 142
 143     static wxPlatform If(int platform, long value);
 144     static wxPlatform IfNot(int platform, long value);
 145     wxPlatform& ElseIf(int platform, long value);
 146     wxPlatform& ElseIfNot(int platform, long value);
 147     wxPlatform& Else(long value);
 148
 149     static wxPlatform If(int platform, int value) { return If(platform, (long)value); }
 150     static wxPlatform IfNot(int platform, int value) { return IfNot(platform, (long)value); }
 151     wxPlatform& ElseIf(int platform, int value) { return ElseIf(platform, (long) value); }
 152     wxPlatform& ElseIfNot(int platform, int value) { return ElseIfNot(platform, (long) value); }
 153     wxPlatform& Else(int value) { return Else((long) value); }
 154
 155     static wxPlatform If(int platform, double value);
 156     static wxPlatform IfNot(int platform, double value);
 157     wxPlatform& ElseIf(int platform, double value);
 158     wxPlatform& ElseIfNot(int platform, double value);
 159     wxPlatform& Else(double value);
 160
 161     static wxPlatform If(int platform, const wxString& value);
 162     static wxPlatform IfNot(int platform, const wxString& value);
 163     wxPlatform& ElseIf(int platform, const wxString& value);
 164     wxPlatform& ElseIfNot(int platform, const wxString& value);
 165     wxPlatform& Else(const wxString& value);
 166
 167     long GetInteger() const { return m_longValue; }
 168     const wxString& GetString() const { return m_stringValue; }
 169     double GetDouble() const { return m_doubleValue; }
 170
 171     operator int() const { return (int) GetInteger(); }
 172     operator long() const { return GetInteger(); }
 173     operator double() const { return GetDouble(); }
 174     operator const wxString&() const { return GetString(); }
 175
 176     static void AddPlatform(int platform);
 177     static bool Is(int platform);
 178     static void ClearPlatforms();
 179
 180 private:
 181
 182     void Init() { m_longValue = 0; m_doubleValue = 0.0; }
 183
 184     long                m_longValue;
 185     double              m_doubleValue;
 186     wxString            m_stringValue;
 187     static wxArrayInt*  sm_customPlatforms;
 188 };
 189
 190 /// Function for testing current platform
 191 inline bool wxPlatformIs(int platform) { return wxPlatform::Is(platform); }
 192
 193 #if wxUSE_GUI
 194
 195 // Get the state of a key (true if pressed, false if not)
 196 // This is generally most useful getting the state of
 197 // the modifier or toggle keys.
 198 WXDLLEXPORT bool wxGetKeyState(wxKeyCode key);
 199
 200
 201 // Don't synthesize KeyUp events holding down a key and producing
 202 // KeyDown events with autorepeat. On by default and always on
 203 // in wxMSW.
 204 WXDLLEXPORT bool wxSetDetectableAutoRepeat( bool flag );
 205
 206
 207 // wxMouseState is used to hold information about button and modifier state
 208 // and is what is returned from wxGetMouseState.
 209 class WXDLLEXPORT wxMouseState
 210 {
 211 public:
 212     wxMouseState()
 213         : m_x(0), m_y(0),
 214           m_leftDown(false), m_middleDown(false), m_rightDown(false),
 215           m_controlDown(false), m_shiftDown(false), m_altDown(false),
 216           m_metaDown(false)
 217     {}
 218
 219     wxCoord     GetX() { return m_x; }
 220     wxCoord     GetY() { return m_y; }
 221
 222     bool        LeftDown()    { return m_leftDown; }
 223     bool        MiddleDown()  { return m_middleDown; }
 224     bool        RightDown()   { return m_rightDown; }
 225
 226     bool        ControlDown() { return m_controlDown; }
 227     bool        ShiftDown()   { return m_shiftDown; }
 228     bool        AltDown()     { return m_altDown; }
 229     bool        MetaDown()    { return m_metaDown; }
 230     bool        CmdDown()
 231     {
 232 #if defined(__WXMAC__) || defined(__WXCOCOA__)
 233         return MetaDown();
 234 #else
 235         return ControlDown();
 236 #endif
 237     }
 238
 239     void        SetX(wxCoord x) { m_x = x; }
 240     void        SetY(wxCoord y) { m_y = y; }
 241
 242     void        SetLeftDown(bool down)   { m_leftDown = down; }
 243     void        SetMiddleDown(bool down) { m_middleDown = down; }
 244     void        SetRightDown(bool down)  { m_rightDown = down; }
 245
 246     void        SetControlDown(bool down) { m_controlDown = down; }
 247     void        SetShiftDown(bool down)   { m_shiftDown = down; }
 248     void        SetAltDown(bool down)     { m_altDown = down; }
 249     void        SetMetaDown(bool down)    { m_metaDown = down; }
 250
 251 private:
 252     wxCoord     m_x;
 253     wxCoord     m_y;
 254
 255     bool        m_leftDown : 1;
 256     bool        m_middleDown : 1;
 257     bool        m_rightDown : 1;
 258
 259     bool        m_controlDown : 1;
 260     bool        m_shiftDown : 1;
 261     bool        m_altDown : 1;
 262     bool        m_metaDown : 1;
 263 };
 264
 265
 266 // Returns the current state of the mouse position, buttons and modifers
 267 WXDLLEXPORT wxMouseState wxGetMouseState();
 268
 269 #endif // wxUSE_GUI
 270
 271 // ----------------------------------------------------------------------------
 272 // Window ID management
 273 // ----------------------------------------------------------------------------
 274
 275 // Ensure subsequent IDs don't clash with this one
 276 WXDLLIMPEXP_BASE void wxRegisterId(long id);
 277
 278 // Return the current ID
 279 WXDLLIMPEXP_BASE long wxGetCurrentId();
 280
 281 // Generate a unique ID
 282 WXDLLIMPEXP_BASE long wxNewId();
 283
 284 // ----------------------------------------------------------------------------
 285 // Various conversions
 286 // ----------------------------------------------------------------------------
 287
 288 // Convert 2-digit hex number to decimal
 289 WXDLLIMPEXP_BASE int wxHexToDec(const wxString& buf);
 290
 291 // Convert decimal integer to 2-character hex string
 292 WXDLLIMPEXP_BASE void wxDecToHex(int dec, wxChar *buf);
 293 WXDLLIMPEXP_BASE wxString wxDecToHex(int dec);
 294
 295 // ----------------------------------------------------------------------------
 296 // Process management
 297 // ----------------------------------------------------------------------------
 298
 299 // NB: for backwards compatibility reasons the values of wxEXEC_[A]SYNC *must*
 300 //     be 0 and 1, don't change!
 301
 302 enum
 303 {
 304     // execute the process asynchronously
 305     wxEXEC_ASYNC    = 0,
 306
 307     // execute it synchronously, i.e. wait until it finishes
 308     wxEXEC_SYNC     = 1,
 309
 310     // under Windows, don't hide the child even if it's IO is redirected (this
 311     // is done by default)
 312     wxEXEC_NOHIDE   = 2,
 313
 314     // under Unix, if the process is the group leader then passing wxKILL_CHILDREN to wxKill
 315     // kills all children as well as pid
 316     wxEXEC_MAKE_GROUP_LEADER = 4,
 317
 318     // by default synchronous execution disables all program windows to avoid
 319     // that the user interacts with the program while the child process is
 320     // running, you can use this flag to prevent this from happening
 321     wxEXEC_NODISABLE = 8,
 322
 323     // by default, the event loop is run while waiting for synchronous execution
 324     // to complete and this flag can be used to simply block the main process
 325     // until the child process finishes
 326     wxEXEC_NOEVENTS = 16,
 327
 328     // convenient synonym for flags given system()-like behaviour
 329     wxEXEC_BLOCK = wxEXEC_SYNC | wxEXEC_NOEVENTS
 330 };
 331
 332 // Execute another program.
 333 //
 334 // If flags contain wxEXEC_SYNC, return -1 on failure and the exit code of the
 335 // process if everything was ok. Otherwise (i.e. if wxEXEC_ASYNC), return 0 on
 336 // failure and the PID of the launched process if ok.
 337 WXDLLIMPEXP_BASE long wxExecute(wxChar **argv, int flags = wxEXEC_ASYNC,
 338                            wxProcess *process = (wxProcess *) NULL);
 339 WXDLLIMPEXP_BASE long wxExecute(const wxString& command, int flags = wxEXEC_ASYNC,
 340                            wxProcess *process = (wxProcess *) NULL);
 341
 342 // execute the command capturing its output into an array line by line, this is
 343 // always synchronous
 344 WXDLLIMPEXP_BASE long wxExecute(const wxString& command,
 345                                 wxArrayString& output,
 346                                 int flags = 0);
 347
 348 // also capture stderr (also synchronous)
 349 WXDLLIMPEXP_BASE long wxExecute(const wxString& command,
 350                                 wxArrayString& output,
 351                                 wxArrayString& error,
 352                                 int flags = 0);
 353
 354 #if defined(__WXMSW__) && wxUSE_IPC
 355 // ask a DDE server to execute the DDE request with given parameters
 356 WXDLLIMPEXP_BASE bool wxExecuteDDE(const wxString& ddeServer,
 357                                    const wxString& ddeTopic,
 358                                    const wxString& ddeCommand);
 359 #endif // __WXMSW__ && wxUSE_IPC
 360
 361 enum wxSignal
 362 {
 363     wxSIGNONE = 0,  // verify if the process exists under Unix
 364     wxSIGHUP,
 365     wxSIGINT,
 366     wxSIGQUIT,
 367     wxSIGILL,
 368     wxSIGTRAP,
 369     wxSIGABRT,
 370     wxSIGIOT = wxSIGABRT,   // another name
 371     wxSIGEMT,
 372     wxSIGFPE,
 373     wxSIGKILL,
 374     wxSIGBUS,
 375     wxSIGSEGV,
 376     wxSIGSYS,
 377     wxSIGPIPE,
 378     wxSIGALRM,
 379     wxSIGTERM
 380
 381     // further signals are different in meaning between different Unix systems
 382 };
 383
 384 enum wxKillError
 385 {
 386     wxKILL_OK,              // no error
 387     wxKILL_BAD_SIGNAL,      // no such signal
 388     wxKILL_ACCESS_DENIED,   // permission denied
 389     wxKILL_NO_PROCESS,      // no such process
 390     wxKILL_ERROR            // another, unspecified error
 391 };
 392
 393 enum wxKillFlags
 394 {
 395     wxKILL_NOCHILDREN = 0,  // don't kill children
 396     wxKILL_CHILDREN = 1     // kill children
 397 };
 398
 399 enum wxShutdownFlags
 400 {
 401     wxSHUTDOWN_POWEROFF,    // power off the computer
 402     wxSHUTDOWN_REBOOT       // shutdown and reboot
 403 };
 404
 405 // Shutdown or reboot the PC
 406 WXDLLIMPEXP_BASE bool wxShutdown(wxShutdownFlags wFlags);
 407
 408 // send the given signal to the process (only NONE and KILL are supported under
 409 // Windows, all others mean TERM), return 0 if ok and -1 on error
 410 //
 411 // return detailed error in rc if not NULL
 412 WXDLLIMPEXP_BASE int wxKill(long pid,
 413                        wxSignal sig = wxSIGTERM,
 414                        wxKillError *rc = NULL,
 415                        int flags = wxKILL_NOCHILDREN);
 416
 417 // Execute a command in an interactive shell window (always synchronously)
 418 // If no command then just the shell
 419 WXDLLIMPEXP_BASE bool wxShell(const wxString& command = wxEmptyString);
 420
 421 // As wxShell(), but must give a (non interactive) command and its output will
 422 // be returned in output array
 423 WXDLLIMPEXP_BASE bool wxShell(const wxString& command, wxArrayString& output);
 424
 425 // Sleep for nSecs seconds
 426 WXDLLIMPEXP_BASE void wxSleep(int nSecs);
 427
 428 // Sleep for a given amount of milliseconds
 429 WXDLLIMPEXP_BASE void wxMilliSleep(unsigned long milliseconds);
 430
 431 // Sleep for a given amount of microseconds
 432 WXDLLIMPEXP_BASE void wxMicroSleep(unsigned long microseconds);
 433
 434 // Sleep for a given amount of milliseconds (old, bad name), use wxMilliSleep
 435 wxDEPRECATED( WXDLLIMPEXP_BASE void wxUsleep(unsigned long milliseconds) );
 436
 437 // Get the process id of the current process
 438 WXDLLIMPEXP_BASE unsigned long wxGetProcessId();
 439
 440 // Get free memory in bytes, or -1 if cannot determine amount (e.g. on UNIX)
 441 WXDLLIMPEXP_BASE wxMemorySize wxGetFreeMemory();
 442
 443 #if wxUSE_ON_FATAL_EXCEPTION
 444
 445 // should wxApp::OnFatalException() be called?
 446 WXDLLIMPEXP_BASE bool wxHandleFatalExceptions(bool doit = true);
 447
 448 #endif // wxUSE_ON_FATAL_EXCEPTION
 449
 450 // flags for wxLaunchDefaultBrowser
 451 enum
 452 {
 453     wxBROWSER_NEW_WINDOW = 1
 454 };
 455
 456 // Launch url in the user's default internet browser
 457 WXDLLIMPEXP_BASE bool wxLaunchDefaultBrowser(const wxString& url, int flags = 0);
 458
 459 // ----------------------------------------------------------------------------
 460 // Environment variables
 461 // ----------------------------------------------------------------------------
 462
 463 // returns true if variable exists (value may be NULL if you just want to check
 464 // for this)
 465 WXDLLIMPEXP_BASE bool wxGetEnv(const wxString& var, wxString *value);
 466
 467 // set the env var name to the given value, return true on success
 468 WXDLLIMPEXP_BASE bool wxSetEnv(const wxString& var, const wxChar *value);
 469
 470 // remove the env var from environment
 471 inline bool wxUnsetEnv(const wxString& var) { return wxSetEnv(var, NULL); }
 472
 473 // ----------------------------------------------------------------------------
 474 // Network and username functions.
 475 // ----------------------------------------------------------------------------
 476
 477 // NB: "char *" functions are deprecated, use wxString ones!
 478
 479 // Get eMail address
 480 WXDLLIMPEXP_BASE bool wxGetEmailAddress(wxChar *buf, int maxSize);
 481 WXDLLIMPEXP_BASE wxString wxGetEmailAddress();
 482
 483 // Get hostname.
 484 WXDLLIMPEXP_BASE bool wxGetHostName(wxChar *buf, int maxSize);
 485 WXDLLIMPEXP_BASE wxString wxGetHostName();
 486
 487 // Get FQDN
 488 WXDLLIMPEXP_BASE wxString wxGetFullHostName();
 489 WXDLLIMPEXP_BASE bool wxGetFullHostName(wxChar *buf, int maxSize);
 490
 491 // Get user ID e.g. jacs (this is known as login name under Unix)
 492 WXDLLIMPEXP_BASE bool wxGetUserId(wxChar *buf, int maxSize);
 493 WXDLLIMPEXP_BASE wxString wxGetUserId();
 494
 495 // Get user name e.g. Julian Smart
 496 WXDLLIMPEXP_BASE bool wxGetUserName(wxChar *buf, int maxSize);
 497 WXDLLIMPEXP_BASE wxString wxGetUserName();
 498
 499 // Get current Home dir and copy to dest (returns pstr->c_str())
 500 WXDLLIMPEXP_BASE wxString wxGetHomeDir();
 501 WXDLLIMPEXP_BASE const wxChar* wxGetHomeDir(wxString *pstr);
 502
 503 // Get the user's home dir (caller must copy --- volatile)
 504 // returns NULL is no HOME dir is known
 505 #if defined(__UNIX__) && wxUSE_UNICODE && !defined(__WINE__)
 506 WXDLLIMPEXP_BASE const wxMB2WXbuf wxGetUserHome(const wxString& user = wxEmptyString);
 507 #else
 508 WXDLLIMPEXP_BASE wxChar* wxGetUserHome(const wxString& user = wxEmptyString);
 509 #endif
 510
 511 #if wxUSE_LONGLONG
 512     typedef wxLongLong wxDiskspaceSize_t;
 513 #else
 514     typedef long wxDiskspaceSize_t;
 515 #endif
 516
 517 // get number of total/free bytes on the disk where path belongs
 518 WXDLLIMPEXP_BASE bool wxGetDiskSpace(const wxString& path,
 519                                      wxDiskspaceSize_t *pTotal = NULL,
 520                                      wxDiskspaceSize_t *pFree = NULL);
 521
 522 #if wxUSE_GUI // GUI only things from now on
 523
 524 // ----------------------------------------------------------------------------
 525 // Menu accelerators related things
 526 // ----------------------------------------------------------------------------
 527
 528 // flags for wxStripMenuCodes
 529 enum
 530 {
 531     // strip '&' characters
 532     wxStrip_Mnemonics = 1,
 533
 534     // strip everything after '\t'
 535     wxStrip_Accel = 2,
 536
 537     // strip everything (this is the default)
 538     wxStrip_All = wxStrip_Mnemonics | wxStrip_Accel
 539 };
 540
 541 // strip mnemonics and/or accelerators from the label
 542 WXDLLEXPORT wxString
 543 wxStripMenuCodes(const wxString& str, int flags = wxStrip_All);
 544
 545 #if WXWIN_COMPATIBILITY_2_6
 546 // obsolete and deprecated version, do not use, use the above overload instead
 547 wxDEPRECATED(
 548     WXDLLEXPORT wxChar* wxStripMenuCodes(const wxChar *in, wxChar *out = NULL)
 549 );
 550
 551 #if wxUSE_ACCEL
 552 class WXDLLEXPORT wxAcceleratorEntry;
 553
 554 // use wxAcceleratorEntry::Create() or FromString() methods instead
 555 wxDEPRECATED(
 556     WXDLLEXPORT wxAcceleratorEntry *wxGetAccelFromString(const wxString& label)
 557 );
 558 #endif // wxUSE_ACCEL
 559
 560 #endif // WXWIN_COMPATIBILITY_2_6
 561
 562 // ----------------------------------------------------------------------------
 563 // Window search
 564 // ----------------------------------------------------------------------------
 565
 566 // Returns menu item id or wxNOT_FOUND if none.
 567 WXDLLEXPORT int wxFindMenuItemId(wxFrame *frame, const wxString& menuString, const wxString& itemString);
 568
 569 // Find the wxWindow at the given point. wxGenericFindWindowAtPoint
 570 // is always present but may be less reliable than a native version.
 571 WXDLLEXPORT wxWindow* wxGenericFindWindowAtPoint(const wxPoint& pt);
 572 WXDLLEXPORT wxWindow* wxFindWindowAtPoint(const wxPoint& pt);
 573
 574 // NB: this function is obsolete, use wxWindow::FindWindowByLabel() instead
 575 //
 576 // Find the window/widget with the given title or label.
 577 // Pass a parent to begin the search from, or NULL to look through
 578 // all windows.
 579 WXDLLEXPORT wxWindow* wxFindWindowByLabel(const wxString& title, wxWindow *parent = (wxWindow *) NULL);
 580
 581 // NB: this function is obsolete, use wxWindow::FindWindowByName() instead
 582 //
 583 // Find window by name, and if that fails, by label.
 584 WXDLLEXPORT wxWindow* wxFindWindowByName(const wxString& name, wxWindow *parent = (wxWindow *) NULL);
 585
 586 // ----------------------------------------------------------------------------
 587 // Message/event queue helpers
 588 // ----------------------------------------------------------------------------
 589
 590 // Yield to other apps/messages and disable user input
 591 WXDLLEXPORT bool wxSafeYield(wxWindow *win = NULL, bool onlyIfNeeded = false);
 592
 593 // Enable or disable input to all top level windows
 594 WXDLLEXPORT void wxEnableTopLevelWindows(bool enable = true);
 595
 596 // Check whether this window wants to process messages, e.g. Stop button
 597 // in long calculations.
 598 WXDLLEXPORT bool wxCheckForInterrupt(wxWindow *wnd);
 599
 600 // Consume all events until no more left
 601 WXDLLEXPORT void wxFlushEvents();
 602
 603 // a class which disables all windows (except, may be, thegiven one) in its
 604 // ctor and enables them back in its dtor
 605 class WXDLLEXPORT wxWindowDisabler
 606 {
 607 public:
 608     wxWindowDisabler(wxWindow *winToSkip = (wxWindow *)NULL);
 609     ~wxWindowDisabler();
 610
 611 private:
 612     wxWindowList *m_winDisabled;
 613
 614     DECLARE_NO_COPY_CLASS(wxWindowDisabler)
 615 };
 616
 617 // ----------------------------------------------------------------------------
 618 // Cursors
 619 // ----------------------------------------------------------------------------
 620
 621 // Set the cursor to the busy cursor for all windows
 622 WXDLLIMPEXP_CORE void wxBeginBusyCursor(const wxCursor *cursor = wxHOURGLASS_CURSOR);
 623
 624 // Restore cursor to normal
 625 WXDLLEXPORT void wxEndBusyCursor();
 626
 627 // true if we're between the above two calls
 628 WXDLLEXPORT bool wxIsBusy();
 629
 630 // Convenience class so we can just create a wxBusyCursor object on the stack
 631 class WXDLLEXPORT wxBusyCursor
 632 {
 633 public:
 634     wxBusyCursor(const wxCursor* cursor = wxHOURGLASS_CURSOR)
 635         { wxBeginBusyCursor(cursor); }
 636     ~wxBusyCursor()
 637         { wxEndBusyCursor(); }
 638
 639     // FIXME: These two methods are currently only implemented (and needed?)
 640     //        in wxGTK.  BusyCursor handling should probably be moved to
 641     //        common code since the wxGTK and wxMSW implementations are very
 642     //        similar except for wxMSW using HCURSOR directly instead of
 643     //        wxCursor..  -- RL.
 644     static const wxCursor &GetStoredCursor();
 645     static const wxCursor GetBusyCursor();
 646 };
 647
 648 void WXDLLEXPORT wxGetMousePosition( int* x, int* y );
 649
 650 // MSW only: get user-defined resource from the .res file.
 651 // Returns NULL or newly-allocated memory, so use delete[] to clean up.
 652 #ifdef __WXMSW__
 653     extern WXDLLEXPORT const wxChar* wxUserResourceStr;
 654     WXDLLEXPORT wxChar* wxLoadUserResource(const wxString& resourceName, const wxString& resourceType = wxUserResourceStr);
 655 #endif // MSW
 656
 657 // ----------------------------------------------------------------------------
 658 // X11 Display access
 659 // ----------------------------------------------------------------------------
 660
 661 #if defined(__X__) || defined(__WXGTK__)
 662
 663 #ifdef __WXGTK__
 664     void *wxGetDisplay();
 665 #endif
 666
 667 #ifdef __X__
 668     WXDLLIMPEXP_CORE WXDisplay *wxGetDisplay();
 669     WXDLLIMPEXP_CORE bool wxSetDisplay(const wxString& display_name);
 670     WXDLLIMPEXP_CORE wxString wxGetDisplayName();
 671 #endif // X or GTK+
 672
 673 // use this function instead of the functions above in implementation code
 674 inline struct _XDisplay *wxGetX11Display()
 675 {
 676     return (_XDisplay *)wxGetDisplay();
 677 }
 678
 679 #endif // X11 || wxGTK
 680
 681 #endif // wxUSE_GUI
 682
 683 // ----------------------------------------------------------------------------
 684 // wxYield(): these functions are obsolete, please use wxApp methods instead!
 685 // ----------------------------------------------------------------------------
 686
 687 // Yield to other apps/messages
 688 WXDLLIMPEXP_BASE bool wxYield();
 689
 690 // Like wxYield, but fails silently if the yield is recursive.
 691 WXDLLIMPEXP_BASE bool wxYieldIfNeeded();
 692
 693 // ----------------------------------------------------------------------------
 694 // Error message functions used by wxWidgets (deprecated, use wxLog)
 695 // ----------------------------------------------------------------------------
 696
 697 #endif
 698     // _WX_UTILSH__