interface/wx/scrolwin.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        scrolwin.h
   3 // Purpose:     interface of wxScrolled template
   4 // Author:      wxWidgets team
   5 // Licence:     wxWindows licence
   6 /////////////////////////////////////////////////////////////////////////////
   7
   8 /**
   9     Possible values for the second argument of wxScrolled::ShowScrollbars().
  10  */
  11 enum wxScrollbarVisibility
  12 {
  13     wxSHOW_SB_NEVER = -1,   ///< Never show the scrollbar at all.
  14     wxSHOW_SB_DEFAULT,      ///< Show scrollbar only if it is needed.
  15     wxSHOW_SB_ALWAYS        ///< Always show scrollbar, even if not needed.
  16 };
  17
  18 /**
  19
  20     The wxScrolled class manages scrolling for its client area, transforming
  21     the coordinates according to the scrollbar positions, and setting the
  22     scroll positions, thumb sizes and ranges according to the area in view.
  23
  24     There are two commonly used (but not the only possible!) specializations of
  25     this class:
  26
  27     - ::wxScrolledWindow, aka wxScrolled<wxPanel>, is equivalent to
  28       ::wxScrolledWindow from earlier versions. Derived from wxPanel, it shares
  29       wxPanel's behaviour with regard to TAB traversal and focus handling. Use
  30       this if the scrolled window will have child controls.
  31
  32     - ::wxScrolledCanvas, aka wxScrolled<wxWindow>, derives from wxWindow and
  33       so doesn't handle children specially. This is suitable e.g. for
  34       implementing scrollable controls such as tree or list controls.
  35
  36     Starting from version 2.4 of wxWidgets, there are several ways to use a
  37     ::wxScrolledWindow (and now wxScrolled). In particular, there are
  38     three ways to set the size of the scrolling area:
  39
  40     One way is to set the scrollbars directly using a call to SetScrollbars().
  41     This is the way it used to be in any previous version of wxWidgets and it
  42     will be kept for backwards compatibility.
  43
  44     An additional method of manual control, which requires a little less
  45     computation of your own, is to set the total size of the scrolling area by
  46     calling either wxWindow::SetVirtualSize(), or wxWindow::FitInside(), and
  47     setting the scrolling increments for it by calling SetScrollRate().
  48     Scrolling in some orientation is enabled by setting a non-zero increment
  49     for it.
  50
  51     The most automatic and newest way is to simply let sizers determine the
  52     scrolling area. This is now the default when you set an interior sizer into
  53     a wxScrolled with wxWindow::SetSizer().  The scrolling area will be
  54     set to the size requested by the sizer and the scrollbars will be assigned
  55     for each orientation according to the need for them and the scrolling
  56     increment set by SetScrollRate().  As above, scrolling is only enabled in
  57     orientations with a non-zero increment.  You can influence the minimum size
  58     of the scrolled area controlled by a sizer by calling
  59     wxWindow::SetVirtualSizeHints(). (Calling SetScrollbars() has analogous
  60     effects in wxWidgets 2.4 -- in later versions it may not continue to
  61     override the sizer.)
  62
  63     Note that if maximum size hints are still supported by
  64     wxWindow::SetVirtualSizeHints(), use them at your own dire risk. They may
  65     or may not have been removed for 2.4, but it really only makes sense to set
  66     minimum size hints here.  We should probably replace
  67     wxWindow::SetVirtualSizeHints() with wxWindow::SetMinVirtualSize() or
  68     similar and remove it entirely in future.
  69
  70     @todo review docs for this class replacing SetVirtualSizeHints() with
  71           SetMinClientSize().
  72
  73     As with all windows, an application can draw onto a wxScrolled using a
  74     @ref overview_dc "device context".
  75
  76     You have the option of handling the OnPaint handler or overriding the
  77     wxScrolled::OnDraw() function, which is passed a pre-scrolled device
  78     context (prepared by wxScrolled::DoPrepareDC()).
  79
  80     If you don't wish to calculate your own scrolling, you must call
  81     DoPrepareDC() when not drawing from within OnDraw(), to set the device
  82     origin for the device context according to the current scroll position.
  83
  84     A wxScrolled will normally scroll itself and therefore its child windows
  85     as well. It might however be desired to scroll a different window than
  86     itself: e.g. when designing a spreadsheet, you will normally only have to
  87     scroll the (usually white) cell area, whereas the (usually grey) label area
  88     will scroll very differently. For this special purpose, you can call
  89     SetTargetWindow() which means that pressing the scrollbars will scroll a
  90     different window.
  91
  92     Note that the underlying system knows nothing about scrolling coordinates,
  93     so that all system functions (mouse events, expose events, refresh calls
  94     etc) as well as the position of subwindows are relative to the "physical"
  95     origin of the scrolled window. If the user insert a child window at
  96     position (10,10) and scrolls the window down 100 pixels (moving the child
  97     window out of the visible area), the child window will report a position
  98     of (10,-90).
  99
 100     @beginStyleTable
 101     @style{wxHSCROLL}
 102            If this style is specified and ::wxVSCROLL isn't, the window will be
 103            scrollable only in horizontal direction (by default, i.e. if neither
 104            this style nor ::wxVSCROLL is specified, it scrolls in both
 105            directions).
 106     @style{wxVSCROLL}
 107            If this style is specified and ::wxHSCROLL isn't, the window will be
 108            scrollable only in vertical direction (by default, i.e. if neither
 109            this style nor ::wxHSCROLL is specified, it scrolls in both
 110            directions).
 111     @style{wxALWAYS_SHOW_SB}
 112            Since wxWidgets 2.9.5, specifying this style makes the window always
 113            show its scrollbars, even if they are not used. See ShowScrollbars().
 114     @style{wxRETAINED}
 115            Uses a backing pixmap to speed refreshes. Motif only.
 116     @endStyleTable
 117
 118
 119     @beginEventEmissionTable{wxScrollWinEvent}
 120     @event{EVT_SCROLLWIN(func)}
 121         Process all scroll events.
 122     @event{EVT_SCROLLWIN_TOP(func)}
 123         Process @c wxEVT_SCROLLWIN_TOP scroll-to-top events.
 124     @event{EVT_SCROLLWIN_BOTTOM(func)}
 125         Process @c wxEVT_SCROLLWIN_BOTTOM scroll-to-bottom events.
 126     @event{EVT_SCROLLWIN_LINEUP(func)}
 127         Process @c wxEVT_SCROLLWIN_LINEUP line up events.
 128     @event{EVT_SCROLLWIN_LINEDOWN(func)}
 129         Process @c wxEVT_SCROLLWIN_LINEDOWN line down events.
 130     @event{EVT_SCROLLWIN_PAGEUP(func)}
 131         Process @c wxEVT_SCROLLWIN_PAGEUP page up events.
 132     @event{EVT_SCROLLWIN_PAGEDOWN(func)}
 133         Process @c wxEVT_SCROLLWIN_PAGEDOWN page down events.
 134     @event{EVT_SCROLLWIN_THUMBTRACK(func)}
 135         Process @c wxEVT_SCROLLWIN_THUMBTRACK thumbtrack events
 136         (frequent events sent as the user drags the thumbtrack).
 137     @event{EVT_SCROLLWIN_THUMBRELEASE(func)}
 138         Process @c wxEVT_SCROLLWIN_THUMBRELEASE thumb release events.
 139     @endEventTable
 140
 141     @note
 142         Don't confuse wxScrollWinEvents generated by this class with
 143         wxScrollEvent objects generated by wxScrollBar and wxSlider.
 144
 145
 146     @remarks
 147     Use wxScrolled for applications where the user scrolls by a fixed amount,
 148     and where a 'page' can be interpreted to be the current visible portion of
 149     the window. For more sophisticated applications, use the wxScrolled
 150     implementation as a guide to build your own scroll behaviour or use
 151     wxVScrolledWindow or its variants.
 152
 153     @since The wxScrolled template exists since version 2.9.0. In older versions,
 154            only ::wxScrolledWindow (equivalent of wxScrolled<wxPanel>) was
 155            available.
 156
 157     @library{wxcore}
 158     @category{miscwnd}
 159
 160     @see wxScrollBar, wxClientDC, wxPaintDC,
 161          wxVScrolledWindow, wxHScrolledWindow, wxHVScrolledWindow,
 162 */
 163 template<class T>
 164 class wxScrolled : public T
 165 {
 166 public:
 167     /// Default constructor.
 168     wxScrolled();
 169
 170     /**
 171         Constructor.
 172
 173         @param parent
 174             Parent window.
 175         @param id
 176             Window identifier. The value @c wxID_ANY indicates a default value.
 177         @param pos
 178             Window position. If a position of ::wxDefaultPosition is specified
 179             then a default position is chosen.
 180         @param size
 181             Window size. If a size of ::wxDefaultSize is specified then the
 182             window is sized appropriately.
 183         @param style
 184             Window style. See wxScrolled.
 185         @param name
 186             Window name.
 187
 188         @remarks The window is initially created without visible scrollbars.
 189                  Call SetScrollbars() to specify how big the virtual window
 190                  size should be.
 191     */
 192     wxScrolled(wxWindow* parent, wxWindowID id = -1,
 193                const wxPoint& pos = wxDefaultPosition,
 194                const wxSize& size = wxDefaultSize,
 195                long style = wxHSCROLL | wxVSCROLL,
 196                const wxString& name = "scrolledWindow");
 197
 198     /**
 199         Translates the logical coordinates to the device ones. For example, if
 200         a window is scrolled 10 pixels to the bottom, the device coordinates of
 201         the origin are (0, 0) (as always), but the logical coordinates are (0,
 202         10) and so the call to CalcScrolledPosition(0, 10, xx, yy) will return
 203         0 in yy.
 204
 205         @beginWxPerlOnly
 206         In wxPerl this method takes two parameters and returns a
 207         2-element list (xx, yy).
 208         @endWxPerlOnly
 209
 210         @see CalcUnscrolledPosition()
 211     */
 212     void CalcScrolledPosition(int x, int y, int* xx, int* yy) const;
 213     wxPoint CalcScrolledPosition(const wxPoint& pt) const;
 214
 215     /**
 216         Translates the device coordinates to the logical ones. For example, if
 217         a window is scrolled 10 pixels to the bottom, the device coordinates of
 218         the origin are (0, 0) (as always), but the logical coordinates are (0,
 219         10) and so the call to CalcUnscrolledPosition(0, 0, xx, yy) will return
 220         10 in yy.
 221
 222         @beginWxPerlOnly
 223         In wxPerl this method takes two parameters and returns a
 224         2-element list (xx, yy).
 225         @endWxPerlOnly
 226
 227         @see CalcScrolledPosition()
 228     */
 229     void CalcUnscrolledPosition(int x, int y, int* xx, int* yy) const;
 230     wxPoint CalcUnscrolledPosition(const wxPoint& pt) const;
 231
 232     /**
 233         Creates the window for two-step construction. Derived classes
 234         should call or replace this function. See wxScrolled::wxScrolled()
 235         for details.
 236     */
 237     bool Create(wxWindow* parent, wxWindowID id = -1,
 238                 const wxPoint& pos = wxDefaultPosition,
 239                 const wxSize& size = wxDefaultSize,
 240                 long style = wxHSCROLL | wxVSCROLL,
 241                 const wxString& name = "scrolledWindow");
 242
 243     /**
 244         Disable use of keyboard keys for scrolling.
 245
 246         By default cursor movement keys (including Home, End, Page Up and Down)
 247         are used to scroll the window appropriately. If the derived class uses
 248         these keys for something else, e.g. changing the currently selected
 249         item, this function can be used to disable this behaviour as it's not
 250         only not necessary then but can actually be actively harmful if another
 251         object forwards a keyboard event corresponding to one of the above keys
 252         to us using ProcessWindowEvent() because the event will always be
 253         processed which can be undesirable.
 254
 255         @since 2.9.1
 256     */
 257     void DisableKeyboardScrolling();
 258
 259     /**
 260         Call this function to prepare the device context for drawing a scrolled
 261         image.
 262
 263         It sets the device origin according to the current scroll position.
 264         DoPrepareDC() is called automatically within the default @c wxEVT_PAINT
 265         event handler, so your OnDraw() override will be passed an already
 266         'pre-scrolled' device context. However, if you wish to draw from
 267         outside of OnDraw() (e.g. from your own @c wxEVT_PAINT handler), you
 268         must call this function yourself.
 269
 270         For example:
 271         @code
 272         void MyWindow::OnEvent(wxMouseEvent& event)
 273         {
 274           wxClientDC dc(this);
 275           DoPrepareDC(dc);
 276
 277           dc.SetPen(*wxBLACK_PEN);
 278           float x, y;
 279           event.Position(&x, &y);
 280           if (xpos > -1 && ypos > -1 && event.Dragging())
 281           {
 282             dc.DrawLine(xpos, ypos, x, y);
 283           }
 284           xpos = x;
 285           ypos = y;
 286         }
 287         @endcode
 288
 289         Notice that the function sets the origin by moving it relatively to the
 290         current origin position, so you shouldn't change the origin before
 291         calling DoPrepareDC() or, if you do, reset it to (0, 0) later. If you
 292         call DoPrepareDC() immediately after device context creation, as in the
 293         example above, this problem doesn't arise, of course, so it is
 294         customary to do it like this.
 295     */
 296     void DoPrepareDC(wxDC& dc);
 297
 298     /**
 299         Enable or disable use of wxWindow::ScrollWindow() for scrolling.
 300
 301         By default, when a scrolled window is logically scrolled,
 302         wxWindow::ScrollWindow() is called on the underlying window which
 303         scrolls the window contents and only invalidates the part of the window
 304         newly brought into view. If @false is passed as an argument, then this
 305         "physical scrolling" is disabled and the window is entirely invalidated
 306         whenever it is scrolled by calling wxWindow::Refresh().
 307
 308         It should be rarely necessary to disable physical scrolling, so this
 309         method shouldn't be called in normal circumstances.
 310
 311         @param xScrolling
 312             If @true, enables physical scrolling in the x direction.
 313         @param yScrolling
 314             If @true, enables physical scrolling in the y direction.
 315     */
 316     void EnableScrolling(bool xScrolling, bool yScrolling);
 317
 318     /**
 319         Set the scrollbar visibility.
 320
 321         By default the scrollbar in the corresponding direction is only shown
 322         if it is needed, i.e. if the virtual size of the scrolled window in
 323         this direction is greater than the current physical window size. Using
 324         this function the scrollbar visibility can be changed to be:
 325             - wxSHOW_SB_ALWAYS: To always show the scrollbar, even if it is
 326                 not needed currently (wxALWAYS_SHOW_SB style can be used during
 327                 the window creation to achieve the same effect but it applies
 328                 in both directions).
 329             - wxSHOW_SB_NEVER: To never show the scrollbar at all. In this case
 330                 the program should presumably provide some other way for the
 331                 user to scroll the window.
 332             - wxSHOW_SB_DEFAULT: To restore the default behaviour described
 333                 above.
 334
 335         @param horz
 336             The desired visibility for the horizontal scrollbar.
 337         @param vert
 338             The desired visibility for the vertical scrollbar.
 339
 340         @since 2.9.0
 341      */
 342     void ShowScrollbars(wxScrollbarVisibility horz, wxScrollbarVisibility vert);
 343
 344     /**
 345         Get the number of pixels per scroll unit (line), in each direction, as
 346         set by SetScrollbars(). A value of zero indicates no scrolling in that
 347         direction.
 348
 349         @param xUnit
 350             Receives the number of pixels per horizontal unit.
 351         @param yUnit
 352             Receives the number of pixels per vertical unit.
 353
 354         @beginWxPerlOnly
 355         In wxPerl this method takes no parameters and returns a
 356         2-element list (xUnit, yUnit).
 357         @endWxPerlOnly
 358
 359         @see SetScrollbars(), GetVirtualSize()
 360     */
 361     void GetScrollPixelsPerUnit(int* xUnit, int* yUnit) const;
 362
 363     /**
 364         Get the position at which the visible portion of the window starts.
 365
 366         @param x
 367             Receives the first visible x position in scroll units.
 368         @param y
 369             Receives the first visible y position in scroll units.
 370
 371         @remarks
 372             If either of the scrollbars is not at the home position, @a x
 373             and/or @a y will be greater than zero.
 374             Combined with wxWindow::GetClientSize(), the application can use this
 375             function to efficiently redraw only the visible portion of the window.
 376             The positions are in logical scroll units, not pixels, so to convert
 377             to pixels you will have to multiply by the number of pixels per scroll
 378             increment.
 379
 380         @beginWxPerlOnly
 381         In wxPerl this method takes no parameters and returns a
 382         2-element list (x, y).
 383         @endWxPerlOnly
 384
 385         @see SetScrollbars(), Scroll()
 386     */
 387     void GetViewStart(int* x, int* y) const;
 388
 389     /**
 390         This is a simple overload of GetViewStart(int*,int*); see that function
 391         for more info.
 392     */
 393     wxPoint GetViewStart() const;
 394
 395     /**
 396         Gets the size in device units of the scrollable window area (as
 397         opposed to the client size, which is the area of the window currently
 398         visible).
 399
 400         @param x
 401             Receives the length of the scrollable window, in pixels.
 402         @param y
 403             Receives the height of the scrollable window, in pixels.
 404
 405         @remarks Use wxDC::DeviceToLogicalX() and wxDC::DeviceToLogicalY() to
 406                  translate these units to logical units.
 407
 408         @beginWxPerlOnly
 409         In wxPerl this method takes no parameters and returns a
 410         2-element list (xUnit, yUnit).
 411         @endWxPerlOnly
 412
 413         @see SetScrollbars(), GetScrollPixelsPerUnit()
 414     */
 415     void GetVirtualSize(int* x, int* y) const;
 416
 417     /**
 418         Motif only: @true if the window has a backing bitmap.
 419     */
 420     bool IsRetained() const;
 421
 422     /**
 423         Called by the default paint event handler to allow the application to
 424         define painting behaviour without having to worry about calling
 425         DoPrepareDC().
 426
 427         Instead of overriding this function you may also just process the paint
 428         event in the derived class as usual, but then you will have to call
 429         DoPrepareDC() yourself.
 430     */
 431     virtual void OnDraw(wxDC& dc);
 432
 433     /**
 434         This function is for backwards compatibility only and simply calls
 435         DoPrepareDC() now. Notice that it is not called by the default paint
 436         event handle (DoPrepareDC() is), so overriding this method in your
 437         derived class is useless.
 438     */
 439     void PrepareDC(wxDC& dc);
 440
 441     /**
 442         Scrolls a window so the view start is at the given point.
 443
 444         @param x
 445             The x position to scroll to, in scroll units.
 446         @param y
 447             The y position to scroll to, in scroll units.
 448
 449         @remarks The positions are in scroll units, not pixels, so to convert to
 450                  pixels you will have to multiply by the number of
 451                  pixels per scroll increment. If either parameter is
 452                  ::wxDefaultCoord (-1), that position will be ignored (no change
 453                  in that direction).
 454
 455         @see SetScrollbars(), GetScrollPixelsPerUnit()
 456     */
 457     void Scroll(int x, int y);
 458
 459     /**
 460         This is an overload of Scroll(int,int); see that function for more info.
 461     */
 462     void Scroll(const wxPoint& pt);
 463
 464     /**
 465         Set the horizontal and vertical scrolling increment only. See the
 466         pixelsPerUnit parameter in SetScrollbars().
 467     */
 468     void SetScrollRate(int xstep, int ystep);
 469
 470     /**
 471         Sets up vertical and/or horizontal scrollbars.
 472
 473         The first pair of parameters give the number of pixels per 'scroll
 474         step', i.e. amount moved when the up or down scroll arrows are pressed.
 475         The second pair gives the length of scrollbar in scroll steps, which
 476         sets the size of the virtual window.
 477
 478         @a xPos and @a yPos optionally specify a position to scroll to
 479         immediately.
 480
 481         For example, the following gives a window horizontal and vertical
 482         scrollbars with 20 pixels per scroll step, and a size of 50 steps (1000
 483         pixels) in each direction:
 484         @code
 485         window->SetScrollbars(20, 20, 50, 50);
 486         @endcode
 487
 488         wxScrolled manages the page size itself, using the current client
 489         window size as the page size.
 490
 491         Note that for more sophisticated scrolling applications, for example
 492         where scroll steps may be variable according to the position in the
 493         document, it will be necessary to derive a new class from wxWindow,
 494         overriding OnSize() and adjusting the scrollbars appropriately.
 495
 496         @param pixelsPerUnitX
 497             Pixels per scroll unit in the horizontal direction.
 498         @param pixelsPerUnitY
 499             Pixels per scroll unit in the vertical direction.
 500         @param noUnitsX
 501             Number of units in the horizontal direction.
 502         @param noUnitsY
 503             Number of units in the vertical direction.
 504         @param xPos
 505             Position to initialize the scrollbars in the horizontal direction,
 506             in scroll units.
 507         @param yPos
 508             Position to initialize the scrollbars in the vertical direction, in
 509             scroll units.
 510         @param noRefresh
 511             Will not refresh window if @true.
 512
 513         @see wxWindow::SetVirtualSize()
 514     */
 515     void SetScrollbars(int pixelsPerUnitX, int pixelsPerUnitY,
 516                        int noUnitsX,
 517                        int noUnitsY,
 518                        int xPos = 0,
 519                        int yPos = 0,
 520                        bool noRefresh = false);
 521
 522     /**
 523         Call this function to tell wxScrolled to perform the actual scrolling
 524         on a different window (and not on itself).
 525
 526         This method is useful when only a part of the window should be
 527         scrolled. A typical example is a control consisting of a fixed header
 528         and the scrollable contents window: the scrollbars are attached to the
 529         main window itself, hence it, and not the contents window must be
 530         derived from wxScrolled, but only the contents window scrolls when the
 531         scrollbars are used. To implement such setup, you need to call this
 532         method with the contents window as argument.
 533
 534         Notice that if this method is used, GetSizeAvailableForScrollTarget()
 535         method must be overridden.
 536     */
 537     void SetTargetWindow(wxWindow *window);
 538     wxWindow *GetTargetWindow() const;
 539
 540
 541     void SetTargetRect(const wxRect& rect);
 542     wxRect GetTargetRect() const;
 543
 544     int GetScrollPageSize(int orient) const;
 545     void SetScrollPageSize(int orient, int pageSize);
 546     int GetScrollLines( int orient ) const;
 547     void SetScale(double xs, double ys);
 548     double GetScaleX() const;
 549     double GetScaleY() const;
 550
 551     virtual void AdjustScrollbars();
 552
 553     /**
 554        Are we generating the autoscroll events?
 555      */
 556     bool IsAutoScrolling() const;
 557
 558     /**
 559        Stop generating the scroll events when mouse is held outside the
 560        window.
 561      */
 562     void StopAutoScrolling();
 563
 564     /**
 565        This method can be overridden in a derived class to forbid sending the
 566        auto scroll events - note that unlike StopAutoScrolling() it doesn't
 567        stop the timer, so it will be called repeatedly and will typically
 568        return different values depending on the current mouse position
 569
 570        The base class version just returns true.
 571     */
 572     virtual bool SendAutoScrollEvents(wxScrollWinEvent& event) const;
 573
 574
 575 protected:
 576     /**
 577         Function which must be overridden to implement the size available for
 578         the scroll target for the given size of the main window.
 579
 580         This method must be overridden if SetTargetWindow() is used (it is
 581         never called otherwise). The implementation should decrease the @a size
 582         to account for the size of the non-scrollable parts of the main window
 583         and return only the size available for the scrollable window itself.
 584         E.g. in the example given in SetTargetWindow() documentation the
 585         function would subtract the height of the header window from the
 586         vertical component of @a size.
 587      */
 588     virtual wxSize GetSizeAvailableForScrollTarget(const wxSize& size);
 589 };
 590
 591
 592 /**
 593     Scrolled window derived from wxPanel.
 594
 595     See wxScrolled for a detailed description.
 596
 597     @note Note that because this class derives from wxPanel, it shares its
 598           behaviour with regard to TAB traversal and focus handling (in
 599           particular, it forwards focus to its children). If you don't want
 600           this behaviour, use ::wxScrolledCanvas instead.
 601
 602     @note ::wxScrolledWindow is an alias for wxScrolled<wxPanel> since version
 603           2.9.0. In older versions, it was a standalone class.
 604
 605     @library{wxcore}
 606     @category{miscwnd}
 607
 608     @see wxScrolled, ::wxScrolledCanvas
 609 */
 610 typedef wxScrolled<wxPanel> wxScrolledWindow;
 611
 612 /**
 613     Alias for wxScrolled<wxWindow>. Scrolled window that doesn't have children
 614     and so doesn't need or want special handling of TAB traversal.
 615
 616     @since 2.9.0
 617
 618     @library{wxcore}
 619     @category{miscwnd}
 620
 621     @see wxScrolled, ::wxScrolledWindow
 622 */
 623 typedef wxScrolled<wxWindow> wxScrolledCanvas;