src/x11/toplevel.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // Name:        x11/toplevel.cpp
   3 // Purpose:     implements wxTopLevelWindow for X11
   4 // Author:      Julian Smart
   5 // Modified by:
   6 // Created:     24.09.01
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) 2002 Julian Smart
   9 // License:     wxWindows licence
  10 ///////////////////////////////////////////////////////////////////////////////
  11
  12 // ============================================================================
  13 // declarations
  14 // ============================================================================
  15
  16 // ----------------------------------------------------------------------------
  17 // headers
  18 // ----------------------------------------------------------------------------
  19
  20 #ifdef __GNUG__
  21     #pragma implementation "toplevel.h"
  22 #endif
  23
  24 // For compilers that support precompilation, includes "wx.h".
  25 #include "wx/wxprec.h"
  26
  27 #ifdef __BORLANDC__
  28     #pragma hdrstop
  29 #endif
  30
  31 #ifndef WX_PRECOMP
  32     #include "wx/app.h"
  33     #include "wx/toplevel.h"
  34     #include "wx/string.h"
  35     #include "wx/log.h"
  36     #include "wx/intl.h"
  37     #include "wx/frame.h"
  38     #include "wx/menu.h"
  39     #include "wx/statusbr.h"
  40 #endif //WX_PRECOMP
  41
  42 #include "wx/settings.h"
  43 #include "wx/x11/private.h"
  44 #include "X11/Xutil.h"
  45
  46 bool wxMWMIsRunning(Window w);
  47
  48 // ----------------------------------------------------------------------------
  49 // wxTopLevelWindowX11 creation
  50 // ----------------------------------------------------------------------------
  51
  52 void wxTopLevelWindowX11::Init()
  53 {
  54     m_iconized =
  55     m_maximizeOnShow = FALSE;
  56
  57     // unlike (almost?) all other windows, frames are created hidden
  58     m_isShown = FALSE;
  59
  60     // Data to save/restore when calling ShowFullScreen
  61     m_fsStyle = 0;
  62     m_fsIsMaximized = FALSE;
  63     m_fsIsShowing = FALSE;
  64
  65     m_needResizeInIdle = FALSE;
  66 }
  67
  68 bool wxTopLevelWindowX11::Create(wxWindow *parent,
  69                                  wxWindowID id,
  70                                  const wxString& title,
  71                                  const wxPoint& pos,
  72                                  const wxSize& size,
  73                                  long style,
  74                                  const wxString& name)
  75 {
  76     // init our fields
  77     Init();
  78
  79     m_windowStyle = style;
  80     m_parent = parent;
  81
  82     SetName(name);
  83
  84     m_windowId = id == -1 ? NewControlId() : id;
  85
  86     if (parent)
  87         parent->AddChild(this);
  88
  89     wxTopLevelWindows.Append(this);
  90
  91     Display *xdisplay = wxGlobalDisplay();
  92     int xscreen = DefaultScreen( xdisplay );
  93     Visual *xvisual = DefaultVisual( xdisplay, xscreen );
  94     Window xparent = RootWindow( xdisplay, xscreen );
  95     Colormap cm = DefaultColormap( xdisplay, xscreen );
  96
  97     if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
  98         m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_BTNFACE);
  99     else
 100         m_backgroundColour = wxSystemSettings::GetColour(wxSYS_COLOUR_APPWORKSPACE);
 101     m_backgroundColour.CalcPixel( (WXColormap) cm );
 102     m_hasBgCol = TRUE;
 103
 104     wxSize size2(size);
 105     if (size2.x == -1)
 106         size2.x = 100;
 107     if (size2.y == -1)
 108         size2.y = 100;
 109
 110     wxPoint pos2(pos);
 111     if (pos2.x == -1)
 112         pos2.x = 100;
 113     if (pos2.y == -1)
 114         pos2.y = 100;
 115
 116 #if !wxUSE_NANOX
 117     XSetWindowAttributes xattributes;
 118     XSizeHints size_hints;
 119
 120     long xattributes_mask =
 121         CWOverrideRedirect |
 122         CWBorderPixel | CWBackPixel;
 123
 124     xattributes.background_pixel = m_backgroundColour.GetPixel();
 125     xattributes.border_pixel = BlackPixel( xdisplay, xscreen );
 126
 127     // TODO: if we want no border, caption etc.,
 128     // I think we set this to True to remove decorations
 129     // No. RR.
 130     xattributes.override_redirect = False;
 131 #endif
 132
 133 #if wxUSE_NANOX
 134     long backColor, foreColor;
 135     backColor = GR_RGB(m_backgroundColour.Red(), m_backgroundColour.Green(), m_backgroundColour.Blue());
 136     foreColor = GR_RGB(m_foregroundColour.Red(), m_foregroundColour.Green(), m_foregroundColour.Blue());
 137
 138     Window xwindow = XCreateWindowWithColor( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y,
 139                                     0, 0, InputOutput, xvisual, backColor, foreColor);
 140 #else
 141     Window xwindow = XCreateWindow( xdisplay, xparent, pos2.x, pos2.y, size2.x, size2.y,
 142                                     0, DefaultDepth(xdisplay,xscreen), InputOutput, xvisual, xattributes_mask, &xattributes );
 143 #endif
 144     m_mainWidget = (WXWindow) xwindow;
 145
 146     int extraFlags = 0;
 147 #if wxUSE_NANOX
 148     extraFlags |= GR_EVENT_MASK_CLOSE_REQ;
 149 #endif
 150
 151     XSelectInput( xdisplay, xwindow,
 152                   extraFlags |
 153                   ExposureMask |
 154                   KeyPressMask |
 155                   KeyReleaseMask |
 156                   ButtonPressMask |
 157                   ButtonReleaseMask |
 158                   ButtonMotionMask |
 159                   EnterWindowMask |
 160                   LeaveWindowMask |
 161                   PointerMotionMask |
 162                   KeymapStateMask |
 163                   FocusChangeMask |
 164                   ColormapChangeMask |
 165                   StructureNotifyMask |
 166                   PropertyChangeMask
 167                   );
 168
 169     wxAddWindowToTable( xwindow, (wxWindow*) this );
 170
 171     // Set background to None which will prevent X11 from clearing the
 172     // background completely.
 173     XSetWindowBackgroundPixmap( xdisplay, xwindow, None );
 174
 175 #if !wxUSE_NANOX
 176     if (GetExtraStyle() & wxTOPLEVEL_EX_DIALOG)
 177     {
 178         if (GetParent() && GetParent()->GetMainWindow())
 179         {
 180              Window xparentwindow = (Window) GetParent()->GetMainWindow();
 181              XSetTransientForHint( xdisplay, xwindow, xparentwindow );
 182         }
 183     }
 184
 185     size_hints.flags = PSize | PPosition;
 186     size_hints.x = pos2.x;
 187     size_hints.y = pos2.y;
 188     size_hints.width = size2.x;
 189     size_hints.height = size2.y;
 190     XSetWMNormalHints( xdisplay, xwindow, &size_hints);
 191
 192     XWMHints wm_hints;
 193     wm_hints.flags = InputHint | StateHint /* | WindowGroupHint */;
 194     wm_hints.input = True;
 195     wm_hints.initial_state = NormalState;
 196     XSetWMHints( xdisplay, xwindow, &wm_hints);
 197
 198     Atom wm_protocols[2];
 199     wm_protocols[0] = XInternAtom( xdisplay, "WM_DELETE_WINDOW", False );
 200     wm_protocols[1] = XInternAtom( xdisplay, "WM_TAKE_FOCUS", False );
 201     XSetWMProtocols( xdisplay, xwindow, wm_protocols, 2);
 202 #endif
 203
 204     wxSetWMDecorations( xwindow, style);
 205
 206     SetTitle(title);
 207
 208     return TRUE;
 209 }
 210
 211 wxTopLevelWindowX11::~wxTopLevelWindowX11()
 212 {
 213     wxTopLevelWindows.DeleteObject(this);
 214
 215     // If this is the last top-level window, exit.
 216     if ( wxTheApp && (wxTopLevelWindows.Number() == 0) )
 217     {
 218         wxTheApp->SetTopWindow(NULL);
 219
 220         if (wxTheApp->GetExitOnFrameDelete())
 221         {
 222             // Signal to the app that we're going to close
 223             wxTheApp->ExitMainLoop();
 224         }
 225     }
 226 }
 227
 228 void wxTopLevelWindowX11::OnInternalIdle()
 229 {
 230     wxWindow::OnInternalIdle();
 231
 232     if (m_needResizeInIdle)
 233     {
 234         wxSizeEvent event( GetClientSize(), GetId() );
 235         event.SetEventObject( this );
 236         GetEventHandler()->ProcessEvent( event );
 237
 238         m_needResizeInIdle = FALSE;
 239     }
 240 }
 241
 242 // ----------------------------------------------------------------------------
 243 // wxTopLevelWindowX11 showing
 244 // ----------------------------------------------------------------------------
 245
 246 bool wxTopLevelWindowX11::Show(bool show)
 247 {
 248     // Nano-X has to force a size event,
 249     // else there's no initial size.
 250 #if wxUSE_NANOX
 251     if (show)
 252 #else
 253     if (show && m_needResizeInIdle)
 254 #endif
 255     {
 256         wxSizeEvent event(GetSize(), GetId());
 257         event.SetEventObject(this);
 258         GetEventHandler()->ProcessEvent(event);
 259
 260         m_needResizeInIdle = FALSE;
 261     }
 262
 263     return wxWindowX11::Show(show);
 264 }
 265
 266 // ----------------------------------------------------------------------------
 267 // wxTopLevelWindowX11 maximize/minimize
 268 // ----------------------------------------------------------------------------
 269
 270 void wxTopLevelWindowX11::Maximize(bool maximize)
 271 {
 272     // TODO
 273 }
 274
 275 bool wxTopLevelWindowX11::IsMaximized() const
 276 {
 277     // TODO
 278     return TRUE;
 279 }
 280
 281 void wxTopLevelWindowX11::Iconize(bool iconize)
 282 {
 283     if (!m_iconized && GetMainWindow())
 284     {
 285         if (XIconifyWindow(wxGlobalDisplay(),
 286             (Window) GetMainWindow(), DefaultScreen(wxGlobalDisplay())) != 0)
 287             m_iconized = TRUE;
 288     }
 289 }
 290
 291 bool wxTopLevelWindowX11::IsIconized() const
 292 {
 293     return m_iconized;
 294 }
 295
 296 void wxTopLevelWindowX11::Restore()
 297 {
 298     // This is the way to deiconify the window, according to the X FAQ
 299     if (m_iconized && GetMainWindow())
 300     {
 301         XMapWindow(wxGlobalDisplay(), (Window) GetMainWindow());
 302         m_iconized = FALSE;
 303     }
 304 }
 305
 306 // ----------------------------------------------------------------------------
 307 // wxTopLevelWindowX11 fullscreen
 308 // ----------------------------------------------------------------------------
 309
 310 bool wxTopLevelWindowX11::ShowFullScreen(bool show, long style)
 311 {
 312     if (show)
 313     {
 314         if (IsFullScreen())
 315             return FALSE;
 316
 317         m_fsIsShowing = TRUE;
 318         m_fsStyle = style;
 319
 320         // TODO
 321
 322         return TRUE;
 323     }
 324     else
 325     {
 326         if (!IsFullScreen())
 327             return FALSE;
 328
 329         m_fsIsShowing = FALSE;
 330
 331         // TODO
 332         return TRUE;
 333     }
 334 }
 335
 336 // ----------------------------------------------------------------------------
 337 // wxTopLevelWindowX11 misc
 338 // ----------------------------------------------------------------------------
 339
 340 void wxTopLevelWindowX11::SetIcon(const wxIcon& icon)
 341 {
 342     // this sets m_icon
 343     wxTopLevelWindowBase::SetIcon(icon);
 344
 345     if (icon.Ok() && GetMainWindow())
 346     {
 347 #if wxUSE_NANOX
 348 #else
 349         XWMHints *wmHints = XAllocWMHints();
 350         wmHints->icon_pixmap = (Pixmap) icon.GetPixmap();
 351
 352         wmHints->flags = IconPixmapHint;
 353
 354         if (icon.GetMask())
 355         {
 356             wmHints->flags |= IconMaskHint;
 357             wmHints->icon_mask = (Pixmap) icon.GetMask()->GetBitmap();
 358         }
 359
 360         XSetWMHints(wxGlobalDisplay(), (Window) GetMainWindow(), wmHints);
 361         XFree(wmHints);
 362 #endif
 363     }
 364 }
 365
 366 void wxTopLevelWindowX11::SetTitle(const wxString& title)
 367 {
 368     m_title = title;
 369     if (GetMainWindow())
 370     {
 371         XStoreName(wxGlobalDisplay(), (Window) GetMainWindow(),
 372             (const char*) title);
 373         XSetIconName(wxGlobalDisplay(), (Window) GetMainWindow(),
 374             (const char*) title);
 375
 376         // Use this if the platform doesn't supply the above functions.
 377 #if 0
 378         XTextProperty textProperty;
 379         textProperty.value = (unsigned char*) title;
 380         textProperty.encoding = XA_STRING;
 381         textProperty.format = 8;
 382         textProperty.nitems = 1;
 383
 384         XSetTextProperty(wxGlobalDisplay(), (Window) GetMainWindow(),
 385             & textProperty, WM_NAME);
 386 #endif
 387     }
 388 }
 389
 390 wxString wxTopLevelWindowX11::GetTitle() const
 391 {
 392     return m_title;
 393 }
 394
 395 #ifndef MWM_DECOR_BORDER
 396 /* bit definitions for MwmHints.flags */
 397 #define MWM_HINTS_FUNCTIONS (1L << 0)
 398 #define MWM_HINTS_DECORATIONS (1L << 1)
 399 #define MWM_HINTS_INPUT_MODE (1L << 2)
 400 #define MWM_HINTS_STATUS (1L << 3)
 401
 402 #define MWM_DECOR_ALL           (1L << 0)
 403 #define MWM_DECOR_BORDER        (1L << 1)
 404 #define MWM_DECOR_RESIZEH       (1L << 2)
 405 #define MWM_DECOR_TITLE         (1L << 3)
 406 #define MWM_DECOR_MENU          (1L << 4)
 407 #define MWM_DECOR_MINIMIZE      (1L << 5)
 408 #define MWM_DECOR_MAXIMIZE      (1L << 6)
 409 #endif
 410
 411 struct MwmHints {
 412     long flags;
 413     long functions;
 414     long decorations;
 415     long input_mode;
 416 };
 417
 418 #define PROP_MOTIF_WM_HINTS_ELEMENTS 5
 419
 420 // Set the window manager decorations according to the
 421 // given wxWindows style
 422 bool wxSetWMDecorations(Window w, long style)
 423 {
 424 #if wxUSE_NANOX
 425     GR_WM_PROPERTIES wmProp;
 426
 427     wmProp.flags = 0;
 428     wmProp.props = 0;
 429
 430     if (style & wxRESIZE_BORDER)
 431     {
 432         wmProp.props |= GR_WM_PROPS_APPFRAME ;
 433         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 434     }
 435
 436     if (style & wxSYSTEM_MENU)
 437     {
 438         wmProp.props |= GR_WM_PROPS_CLOSEBOX ;
 439         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 440     }
 441
 442     if ((style & wxCAPTION) ||
 443         (style & wxTINY_CAPTION_HORIZ) ||
 444         (style & wxTINY_CAPTION_VERT))
 445     {
 446         wmProp.props |= GR_WM_PROPS_CAPTION ;
 447         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 448
 449         // The default dialog style doesn't include any kind
 450         // of border, which is a bit odd. Anyway, inclusion
 451         // of a caption surely implies a border.
 452         style |= wxTHICK_FRAME;
 453     }
 454
 455     if (style & wxTHICK_FRAME)
 456     {
 457         wmProp.props |= GR_WM_PROPS_APPFRAME ;
 458         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 459     }
 460
 461     if (style & wxSIMPLE_BORDER)
 462     {
 463         wmProp.props |= GR_WM_PROPS_BORDER ;
 464         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 465     }
 466
 467     if (style & wxMINIMIZE_BOX)
 468     {
 469     }
 470
 471     if (style & wxMAXIMIZE_BOX)
 472     {
 473         wmProp.props |= GR_WM_PROPS_MAXIMIZE ;
 474         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 475     }
 476
 477     if (((style & wxBORDER) != wxBORDER) && ((style & wxTHICK_FRAME) != wxTHICK_FRAME)
 478         && ((style & wxRESIZE_BORDER) != wxRESIZE_BORDER))
 479     {
 480         wmProp.props |= GR_WM_PROPS_NODECORATE ;
 481         wmProp.flags |= GR_WM_FLAGS_PROPS ;
 482     }
 483
 484     GrSetWMProperties(w, & wmProp);
 485
 486 #else
 487     if (!wxMWMIsRunning(w))
 488         return FALSE;
 489
 490     Atom mwm_wm_hints = XInternAtom(wxGlobalDisplay(),"_MOTIF_WM_HINTS", False);
 491     MwmHints hints;
 492     hints.flags = 0;
 493     hints.decorations = 0;
 494
 495     if (style & wxRESIZE_BORDER)
 496     {
 497         // wxLogDebug("MWM_DECOR_RESIZEH");
 498         hints.flags |= MWM_HINTS_DECORATIONS;
 499         hints.decorations |= MWM_DECOR_RESIZEH;
 500     }
 501
 502     if (style & wxSYSTEM_MENU)
 503     {
 504         // wxLogDebug("MWM_DECOR_MENU");
 505         hints.flags |= MWM_HINTS_DECORATIONS;
 506         hints.decorations |= MWM_DECOR_MENU;
 507     }
 508
 509     if ((style & wxCAPTION) ||
 510         (style & wxTINY_CAPTION_HORIZ) ||
 511         (style & wxTINY_CAPTION_VERT))
 512     {
 513         // wxLogDebug("MWM_DECOR_TITLE");
 514         hints.flags |= MWM_HINTS_DECORATIONS;
 515         hints.decorations |= MWM_DECOR_TITLE;
 516     }
 517
 518     if ((style & wxTHICK_FRAME) || (style & wxCAPTION))
 519     {
 520         // wxLogDebug("MWM_DECOR_BORDER");
 521         hints.flags |= MWM_HINTS_DECORATIONS;
 522         hints.decorations |= MWM_DECOR_BORDER;
 523     }
 524
 525     if (style & wxMINIMIZE_BOX)
 526     {
 527         // wxLogDebug("MWM_DECOR_MINIMIZE");
 528         hints.flags |= MWM_HINTS_DECORATIONS;
 529         hints.decorations |= MWM_DECOR_MINIMIZE;
 530     }
 531
 532     if (style & wxMAXIMIZE_BOX)
 533     {
 534         // wxLogDebug("MWM_DECOR_MAXIMIZE");
 535         hints.flags |= MWM_HINTS_DECORATIONS;
 536         hints.decorations |= MWM_DECOR_MAXIMIZE;
 537     }
 538
 539     XChangeProperty(wxGlobalDisplay(),
 540                     w,
 541                     mwm_wm_hints, mwm_wm_hints,
 542                     32, PropModeReplace,
 543                     (unsigned char *) &hints, PROP_MOTIF_WM_HINTS_ELEMENTS);
 544
 545 #endif
 546     return TRUE;
 547 }
 548
 549 bool wxMWMIsRunning(Window w)
 550 {
 551 #if wxUSE_NANOX
 552     return FALSE;
 553 #else
 554     Display *dpy = (Display*)wxGetDisplay();
 555     Atom motifWmInfo = XInternAtom(dpy, "_MOTIF_WM_INFO", False);
 556
 557     unsigned long length, bytesafter;
 558     unsigned char value[20];
 559     unsigned char *ptr = &value[0];
 560     int ret, format;
 561     Atom type;
 562
 563     type = format = length = 0;
 564     value[0] = 0;
 565
 566     ret = XGetWindowProperty(wxGlobalDisplay(), w, motifWmInfo,
 567             0L, 2, False, motifWmInfo,
 568             &type, &format, &length, &bytesafter, &ptr);
 569
 570     return (ret == Success);
 571 #endif
 572 }
 573
 574 // For implementation purposes - sometimes decorations make the client area
 575 // smaller
 576 wxPoint wxTopLevelWindowX11::GetClientAreaOrigin() const
 577 {
 578     // wxFrame::GetClientAreaOrigin
 579     // does the required calculation already.
 580     return wxPoint(0, 0);
 581 }
 582
 583 void wxTopLevelWindowX11::DoGetClientSize( int *width, int *height ) const
 584 {
 585     XSync(wxGlobalDisplay(), False);
 586     wxWindowX11::DoGetClientSize(width, height);
 587 }
 588
 589 void wxTopLevelWindowX11::DoSetClientSize(int width, int height)
 590 {
 591     wxWindowX11::DoSetClientSize(width, height);
 592
 593 #if !wxUSE_NANOX
 594     // Set the top-level window size
 595     XSizeHints size_hints;
 596     wxSize oldSize = GetSize();
 597     wxSize oldClientSize = GetClientSize();
 598
 599     size_hints.flags = PSize;
 600     size_hints.width = width + (oldSize.x - oldClientSize.x);
 601     size_hints.height = height + (oldSize.y - oldClientSize.y);
 602     XSetWMNormalHints( (Display*) GetXDisplay(), (Window) GetMainWindow(),
 603                        &size_hints);
 604
 605     // This seems to be necessary or resizes don't get performed
 606     XSync(wxGlobalDisplay(), False);
 607     XSync(wxGlobalDisplay(), False);
 608
 609 #if 0
 610     wxLogDebug("DoSetClientSize: Tried to set size to %d, %d", (int) size_hints.width, (int) size_hints.height);
 611
 612     XSync(wxGlobalDisplay(), False);
 613     wxSize newSize = GetSize();
 614     wxLogDebug("New size is %d, %d", (int) newSize.x, (int) newSize.y);
 615 #endif
 616 #endif
 617 }
 618
 619 void wxTopLevelWindowX11::DoSetSize(int x, int y, int width, int height, int sizeFlags)
 620 {
 621 #if 0
 622     // wxLogDebug( "Setting pos: %d, %d", x, y );
 623     wxWindowX11::DoSetSize(x, y, width, height, sizeFlags);
 624 #endif
 625     XSync(wxGlobalDisplay(), False);
 626     Window window = (Window) m_mainWidget;
 627     if (!window)
 628         return ;
 629
 630     Display *display = (Display*) GetXDisplay();
 631     Window root = RootWindowOfScreen(DefaultScreenOfDisplay(display));
 632     Window parent_window = window,
 633         next_parent   = window;
 634
 635     // search for the parent that is child of ROOT, because the WM may
 636     // reparent twice and notify only the next parent (like FVWM)
 637     while (next_parent != root) {
 638         Window *theChildren;
 639 #if wxUSE_NANOX
 640         GR_COUNT n;
 641 #else
 642         unsigned int n;
 643 #endif
 644         parent_window = next_parent;
 645         XQueryTree(display, parent_window, &root,
 646             &next_parent, &theChildren, &n);
 647         XFree(theChildren); // not needed
 648     }
 649
 650     XWindowChanges windowChanges;
 651     windowChanges.x = x;
 652     windowChanges.y = y;
 653     windowChanges.width = width;
 654     windowChanges.height = height;
 655     windowChanges.stack_mode = 0;
 656     int valueMask = CWX | CWY | CWWidth | CWHeight;
 657
 658     if (x != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 659     {
 660         valueMask |= CWX;
 661     }
 662     if (y != -1 || (sizeFlags & wxSIZE_ALLOW_MINUS_ONE))
 663     {
 664         valueMask |= CWY;
 665     }
 666     if (width != -1)
 667     {
 668         windowChanges.width = wxMax(1, width);
 669         valueMask |= CWWidth;
 670     }
 671     if (height != -1)
 672     {
 673         windowChanges.height = wxMax(1, height);
 674         valueMask |= CWHeight;
 675     }
 676
 677     XConfigureWindow( display, parent_window, valueMask, &windowChanges );
 678
 679 #if !wxUSE_NANOX
 680     XSizeHints size_hints;
 681     size_hints.flags = 0;
 682     if (x > -1 && y > -1)
 683         size_hints.flags |= PPosition;
 684     if (width > -1 && height > -1)
 685         size_hints.flags |= PSize;
 686     size_hints.width = width;
 687     size_hints.height = height;
 688     size_hints.x = x;
 689     size_hints.y = y;
 690     XSetWMNormalHints( (Display*) GetXDisplay(), (Window) GetMainWindow(),
 691                        &size_hints);
 692
 693     // This seems to be necessary or resizes don't get performed.
 694     // Take them out (or even just one of them), and the About
 695     // box of the minimal sample probably won't be resized right.
 696     XSync(wxGlobalDisplay(), False);
 697     XSync(wxGlobalDisplay(), False);
 698 #endif
 699 }
 700
 701 void wxTopLevelWindowX11::DoGetPosition(int *x, int *y) const
 702 {
 703     XSync(wxGlobalDisplay(), False);
 704     Window window = (Window) m_mainWidget;
 705     if (!window)
 706         return ;
 707
 708     Display *display = (Display*) GetXDisplay();
 709     Window root = RootWindowOfScreen(DefaultScreenOfDisplay(display));
 710     Window parent_window = window,
 711         next_parent   = window;
 712
 713     // search for the parent that is child of ROOT, because the WM may
 714     // reparent twice and notify only the next parent (like FVWM)
 715     while (next_parent != root) {
 716         Window *theChildren;
 717 #if wxUSE_NANOX
 718         GR_COUNT n;
 719 #else
 720         unsigned int n;
 721 #endif
 722         parent_window = next_parent;
 723         XQueryTree(display, parent_window, &root,
 724             &next_parent, &theChildren, &n);
 725         XFree(theChildren); // not needed
 726     }
 727 #if 0
 728     int xx, yy; unsigned int dummy;
 729     XGetGeometry(display, parent_window, &root,
 730                  &xx, &yy, &dummy, &dummy, &dummy, &dummy);
 731     if (x) *x = xx;
 732     if (y) *y = yy;
 733 #else
 734     XWindowAttributes attr;
 735     Status status = XGetWindowAttributes((Display*) GetXDisplay(), parent_window, & attr);
 736     if (status)
 737     {
 738         if (x) *x = attr.x;
 739         if (y) *y = attr.y;
 740     }
 741     else
 742     {
 743         if (x) *x = 0;
 744         if (y) *y = 0;
 745     }
 746 #endif
 747 }