2a487ffe83
Explain how these methods actually work, remove a very (from wx 1.x days?) outdated reference to wxPanel always calling Layout() and mention the special case of wxTopLevelWindow in the overview too.
723 lines
25 KiB
Objective-C
723 lines
25 KiB
Objective-C
/////////////////////////////////////////////////////////////////////////////
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// Name: toplevel.h
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// Purpose: interface of wxTopLevelWindow
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// Author: wxWidgets team
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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/**
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Styles used with wxTopLevelWindow::RequestUserAttention().
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*/
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enum
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{
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wxUSER_ATTENTION_INFO = 1, ///< Requests user attention,
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wxUSER_ATTENTION_ERROR = 2 ///< Results in a more drastic action.
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};
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/**
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Styles used with wxTopLevelWindow::ShowFullScreen().
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*/
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enum
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{
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wxFULLSCREEN_NOMENUBAR = 0x0001, ///< Don't display the menu bar.
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wxFULLSCREEN_NOTOOLBAR = 0x0002, ///< Don't display toolbar bars.
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wxFULLSCREEN_NOSTATUSBAR = 0x0004, ///< Don't display the status bar.
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wxFULLSCREEN_NOBORDER = 0x0008, ///< Don't display any border.
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wxFULLSCREEN_NOCAPTION = 0x0010, ///< Don't display a caption.
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/**
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Combination of all above, will display the least possible.
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*/
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wxFULLSCREEN_ALL = wxFULLSCREEN_NOMENUBAR | wxFULLSCREEN_NOTOOLBAR |
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wxFULLSCREEN_NOSTATUSBAR | wxFULLSCREEN_NOBORDER |
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wxFULLSCREEN_NOCAPTION
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};
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#define wxDEFAULT_FRAME_STYLE (wxSYSTEM_MENU | \
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wxRESIZE_BORDER | \
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wxMINIMIZE_BOX | \
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wxMAXIMIZE_BOX | \
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wxCLOSE_BOX | \
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wxCAPTION | \
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wxCLIP_CHILDREN)
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/**
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@class wxTopLevelWindow
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wxTopLevelWindow is a common base class for wxDialog and wxFrame. It is an
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abstract base class meaning that you never work with objects of this class
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directly, but all of its methods are also applicable for the two classes
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above.
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Note that the instances of wxTopLevelWindow are managed by wxWidgets in the
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internal top level window list.
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@beginEventEmissionTable
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@event{EVT_MAXIMIZE(id, func)}
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Process a @c wxEVT_MAXIMIZE event. See wxMaximizeEvent.
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@event{EVT_MOVE(func)}
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Process a @c wxEVT_MOVE event, which is generated when a window is moved.
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See wxMoveEvent.
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@event{EVT_MOVE_START(func)}
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Process a @c wxEVT_MOVE_START event, which is generated when the user starts
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to move or size a window. wxMSW only.
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See wxMoveEvent.
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@event{EVT_MOVE_END(func)}
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Process a @c wxEVT_MOVE_END event, which is generated when the user stops
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moving or sizing a window. wxMSW only.
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See wxMoveEvent.
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@event{EVT_SHOW(func)}
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Process a @c wxEVT_SHOW event. See wxShowEvent.
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@endEventTable
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@library{wxcore}
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@category{managedwnd}
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@see wxDialog, wxFrame
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*/
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class wxTopLevelWindow : public wxNonOwnedWindow
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{
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public:
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/**
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Default ctor.
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*/
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wxTopLevelWindow();
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/**
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Constructor creating the top level window.
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*/
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wxTopLevelWindow(wxWindow *parent,
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wxWindowID id,
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const wxString& title,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxDEFAULT_FRAME_STYLE,
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const wxString& name = wxFrameNameStr);
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/**
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Destructor. Remember that wxTopLevelWindows do not get immediately
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destroyed when the user (or the app) closes them; they have a
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@b delayed destruction.
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See @ref overview_windowdeletion for more info.
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*/
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virtual ~wxTopLevelWindow();
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/**
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Creates the top level window.
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*/
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bool Create(wxWindow *parent,
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wxWindowID id,
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const wxString& title,
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const wxPoint& pos = wxDefaultPosition,
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const wxSize& size = wxDefaultSize,
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long style = wxDEFAULT_FRAME_STYLE,
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const wxString& name = wxFrameNameStr);
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/**
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Returns @true if the platform supports making the window translucent.
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@see SetTransparent()
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*/
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virtual bool CanSetTransparent();
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/**
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A synonym for CentreOnScreen().
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*/
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void CenterOnScreen(int direction = wxBOTH);
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/**
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Centres the window on screen.
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@param direction
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Specifies the direction for the centering. May be @c wxHORIZONTAL,
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@c wxVERTICAL or @c wxBOTH.
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@see wxWindow::CentreOnParent()
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*/
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void CentreOnScreen(int direction = wxBOTH);
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/**
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Enables or disables the Close button (most often in the right upper
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corner of a dialog) and the Close entry of the system menu (most often
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in the left upper corner of the dialog).
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Returns @true if operation was successful. This may be wrong on X11
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(including GTK+) where the window manager may not support this operation
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and there is no way to find out.
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*/
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virtual bool EnableCloseButton(bool enable = true);
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/**
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Enables or disables the Maximize button (in the right or left upper
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corner of a frame or dialog).
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Currently only implemented for wxMSW and wxOSX.
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The window style must contain wxMAXIMIZE_BOX.
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Returns @true if operation was successful. Note that a successful
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operation does not change the window style flags.
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@since 3.1.0
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*/
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virtual bool EnableMaximizeButton(bool enable = true);
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/**
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Enables or disables the Minimize button (in the right or left upper
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corner of a frame or dialog).
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Currently only implemented for wxMSW and wxOSX.
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The window style must contain wxMINIMIZE_BOX.
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Note that in wxMSW a successful operation will change the window
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style flags.
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Returns @true if operation was successful. Note that a successful
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operation does not change the window style flags.
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@since 3.1.0
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*/
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virtual bool EnableMinimizeButton(bool enable = true);
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/**
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Returns a pointer to the button which is the default for this window, or
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@c @NULL. The default button is the one activated by pressing the Enter
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key.
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*/
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wxWindow* GetDefaultItem() const;
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/**
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Get the default size for a new top level window.
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This is used internally by wxWidgets on some platforms to determine the
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default size for a window created using ::wxDefaultSize so it is not
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necessary to use it when creating a wxTopLevelWindow, however it may be
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useful if a rough estimation of the window size is needed for some
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other reason.
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@since 2.9.2
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*/
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static wxSize GetDefaultSize();
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/**
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Returns the standard icon of the window. The icon will be invalid if it
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hadn't been previously set by SetIcon().
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@see GetIcons()
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*/
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wxIcon GetIcon() const;
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/**
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Returns all icons associated with the window, there will be none of them
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if neither SetIcon() nor SetIcons() had been called before. Use
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GetIcon() to get the main icon of the window.
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@see wxIconBundle
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*/
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const wxIconBundle& GetIcons() const;
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/**
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Gets a string containing the window title.
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@see SetTitle()
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*/
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virtual wxString GetTitle() const;
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/**
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Iconizes or restores the window.
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Note that in wxGTK the change to the window state is not immediate,
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i.e. IsIconized() will typically return @false right after a call to
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Iconize() and its return value will only change after the control flow
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returns to the event loop and the notification about the window being
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really iconized is received.
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@param iconize
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If @true, iconizes the window; if @false, shows and restores it.
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@see IsIconized(), Restore()(), wxIconizeEvent.
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*/
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virtual void Iconize(bool iconize = true);
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/**
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Returns @true if this window is currently active, i.e.\ if the user is
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currently working with it.
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*/
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virtual bool IsActive();
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/**
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Returns @true if this window is expected to be always maximized, either
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due to platform policy or due to local policy regarding particular
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class.
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*/
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virtual bool IsAlwaysMaximized() const;
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/**
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Returns @true if the window is in fullscreen mode.
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@see ShowFullScreen()
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*/
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virtual bool IsFullScreen() const;
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/**
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Returns @true if the window is iconized.
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*/
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virtual bool IsIconized() const;
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/**
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Returns @true if the window is maximized.
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*/
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virtual bool IsMaximized() const;
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/**
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This method is specific to wxUniversal port.
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Returns @true if this window is using native decorations, @false if we
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draw them ourselves.
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@see UseNativeDecorations(),
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UseNativeDecorationsByDefault()
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*/
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bool IsUsingNativeDecorations() const;
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/**
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Lays out the children using the window sizer or resizes the only child
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of the window to cover its entire area.
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This class overrides the base class Layout() method to check if this
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window contains exactly one child -- which is commonly the case, with
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wxPanel being often created as the only child of wxTopLevelWindow --
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and, if this is the case, resizes this child window to cover the entire
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client area.
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Note that if you associate a sizer with this window, the sizer takes
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precedence and the only-child-resizing is only used as fallback.
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@returns @false if nothing was done because the window doesn't have
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neither a sizer nor a single child, @true otherwise.
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*/
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virtual bool Layout();
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/**
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Maximizes or restores the window.
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Note that, just as with Iconize(), the change to the window state is
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not immediate in at least wxGTK port.
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@param maximize
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If @true, maximizes the window, otherwise it restores it.
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@see Restore(), Iconize()
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*/
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virtual void Maximize(bool maximize = true);
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/**
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MSW-specific function for accessing the system menu.
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Returns a wxMenu pointer representing the system menu of the window
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under MSW. The returned wxMenu may be used, if non-@c NULL, to add
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extra items to the system menu. The usual @c wxEVT_MENU
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events (that can be processed using @c EVT_MENU event table macro) will
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then be generated for them. All the other wxMenu methods may be used as
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well but notice that they won't allow you to access any standard system
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menu items (e.g. they can't be deleted or modified in any way
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currently).
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Notice that because of the native system limitations the identifiers of
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the items added to the system menu must be multiples of 16, otherwise
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no events will be generated for them.
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The returned pointer must @em not be deleted, it is owned by the window
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and will be only deleted when the window itself is destroyed.
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This function is not available in the other ports by design, any
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occurrences of it in the portable code must be guarded by
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@code #ifdef __WXMSW__ @endcode preprocessor guards.
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@since 2.9.3
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*/
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wxMenu *MSWGetSystemMenu() const;
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/**
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Use a system-dependent way to attract users attention to the window when
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it is in background.
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@a flags may have the value of either @c ::wxUSER_ATTENTION_INFO
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(default) or @c ::wxUSER_ATTENTION_ERROR which results in a more drastic
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action. When in doubt, use the default value.
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@note This function should normally be only used when the application
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is not already in foreground.
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This function is currently implemented for Win32 where it flashes
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the window icon in the taskbar, and for wxGTK with task bars
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supporting it.
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*/
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virtual void RequestUserAttention(int flags = wxUSER_ATTENTION_INFO);
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/**
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Restore a previously iconized or maximized window to its normal state.
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In wxGTK this method currently doesn't return the maximized window to
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its normal state and you must use Maximize() with @false argument
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explicitly for this. In the other ports, it both unmaximizes the
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maximized windows and uniconizes the iconized ones.
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@see Iconize(), Maximize()
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*/
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void Restore();
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/**
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Class used with SaveGeometry() and RestoreToGeometry().
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This is an abstract base class, i.e. to use it you must define a
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derived class implementing the pure virtual SaveField() and
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RestoreField() methods.
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For example, if you wished to store the window geometry in a database,
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you could derive a class saving fields such as "width" or "height" in a
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table in this database and restoring them from it later.
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@since 3.1.2
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*/
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class GeometrySerializer
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{
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/**
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Save a single field with the given value.
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Note that if this function returns @false, SaveGeometry() supposes
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that saving the geometry failed and returns @false itself, without
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even trying to save anything else.
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@param name uniquely identifies the field but is otherwise
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arbitrary.
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@param value value of the field (can be positive or negative, i.e.
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it can't be assumed that a value like -1 is invalid).
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@return @true if the field was saved or @false if saving it failed,
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resulting in wxTopLevelWindow::SaveGeometry() failure.
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*/
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virtual bool SaveField(const wxString& name, int value) const = 0;
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/**
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Try to restore a single field.
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Unlike for SaveField(), returning @false from this function may
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indicate that the value simply wasn't present and doesn't prevent
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RestoreToGeometry() from continuing with trying to restore the
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other values.
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@param name uniquely identifies the field
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@param value non-@NULL pointer to the value to be filled by this
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function
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@return @true if the value was retrieved or @false if it wasn't
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found or an error occurred.
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*/
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virtual bool RestoreField(const wxString& name, int* value) = 0;
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};
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/**
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Restores the window to the previously saved geometry.
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This is a companion function to SaveGeometry() and can be called later
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to restore the window to the geometry it had when it was saved.
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@param ser An object implementing GeometrySerializer virtual methods.
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@return @true if any (and, usually, but not necessarily, all) of the
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window geometry attributes were restored or @false if there was no
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saved geometry information at all or restoring it failed.
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@since 3.1.2
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*/
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bool RestoreToGeometry(GeometrySerializer& ser);
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/**
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Save the current window geometry to allow restoring it later.
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After calling this function, window geometry is saved in the provided
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serializer and calling RestoreToGeometry() with the same serializer
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later (i.e. usually during a subsequent program execution) would
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restore the window to the same position, size, maximized/minimized
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state etc.
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This function is used by wxPersistentTLW, so it is not necessary to use
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it if the goal is to just save and restore window geometry in the
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simplest possible way. However is more flexibility is required, it can
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be also used directly with a custom serializer object.
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@param ser An object implementing GeometrySerializer virtual methods.
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@return @true if the geometry was saved, @false if doing it failed
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@since 3.1.2
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*/
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bool SaveGeometry(const GeometrySerializer& ser) const;
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/**
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Changes the default item for the panel, usually @a win is a button.
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@see GetDefaultItem()
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*/
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wxWindow* SetDefaultItem(wxWindow* win);
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wxWindow* SetTmpDefaultItem(wxWindow * win);
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wxWindow* GetTmpDefaultItem() const;
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/**
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Sets the icon for this window.
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@param icon
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The wxIcon to associate with this window.
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@remarks The window takes a 'copy' of @a icon, but since it uses
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reference counting, the copy is very quick. It is safe to
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delete @a icon after calling this function.
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@note In wxMSW, @a icon must be either 16x16 or 32x32 icon.
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@see wxIcon, SetIcons()
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*/
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void SetIcon(const wxIcon& icon);
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/**
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Sets several icons of different sizes for this window: this allows
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using different icons for different situations (e.g. task switching bar,
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taskbar, window title bar) instead of scaling, with possibly bad looking
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results, the only icon set by SetIcon().
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@param icons
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The icons to associate with this window.
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@note In wxMSW, @a icons must contain a 16x16 or 32x32 icon,
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preferably both.
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@see wxIconBundle
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*/
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virtual void SetIcons(const wxIconBundle& icons);
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/**
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A simpler interface for setting the size hints than SetSizeHints().
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*/
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virtual void SetMaxSize(const wxSize& size);
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/**
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A simpler interface for setting the size hints than SetSizeHints().
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*/
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virtual void SetMinSize(const wxSize& size);
|
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|
|
/**
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Allows specification of minimum and maximum window sizes, and window
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size increments. If a pair of values is not set (or set to -1), no
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constraints will be used.
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@param minW
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The minimum width.
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@param minH
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The minimum height.
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@param maxW
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The maximum width.
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@param maxH
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The maximum height.
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@param incW
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Specifies the increment for sizing the width (GTK/Motif/Xt only).
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@param incH
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Specifies the increment for sizing the height (GTK/Motif/Xt only).
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|
@remarks Notice that this function not only prevents the user from
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resizing the window outside the given bounds but it also
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prevents the program itself from doing it using
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wxWindow::SetSize().
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*/
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virtual void SetSizeHints(int minW, int minH,
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int maxW = -1, int maxH = -1,
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int incW = -1, int incH = -1);
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|
|
/**
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Allows specification of minimum and maximum window sizes, and window
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size increments. If a pair of values is not set (or set to -1), no
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constraints will be used.
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@param minSize
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The minimum size of the window.
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@param maxSize
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The maximum size of the window.
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@param incSize
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Increment size (only taken into account under X11-based ports such
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as wxGTK/wxMotif/wxX11).
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|
|
@remarks Notice that this function not only prevents the user from
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resizing the window outside the given bounds but it also
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|
prevents the program itself from doing it using
|
|
wxWindow::SetSize().
|
|
*/
|
|
void SetSizeHints(const wxSize& minSize,
|
|
const wxSize& maxSize = wxDefaultSize,
|
|
const wxSize& incSize = wxDefaultSize);
|
|
|
|
/**
|
|
Sets the window title.
|
|
|
|
@param title
|
|
The window title.
|
|
|
|
@see GetTitle()
|
|
*/
|
|
virtual void SetTitle(const wxString& title);
|
|
|
|
/**
|
|
If the platform supports it will set the window to be translucent.
|
|
|
|
@param alpha
|
|
Determines how opaque or transparent the window will be, if the
|
|
platform supports the operation. A value of 0 sets the window to be
|
|
fully transparent, and a value of 255 sets the window to be fully
|
|
opaque.
|
|
*/
|
|
virtual bool SetTransparent(wxByte alpha);
|
|
|
|
/**
|
|
This virtual function is not meant to be called directly but can be
|
|
overridden to return @false (it returns @true by default) to allow the
|
|
application to close even if this, presumably not very important, window
|
|
is still opened. By default, the application stays alive as long as
|
|
there are any open top level windows.
|
|
*/
|
|
virtual bool ShouldPreventAppExit() const;
|
|
|
|
/**
|
|
This function sets the wxTopLevelWindow's modified state on OS X,
|
|
which currently draws a black dot in the wxTopLevelWindow's close button.
|
|
On other platforms, this method does nothing.
|
|
|
|
@see OSXIsModified()
|
|
*/
|
|
virtual void OSXSetModified(bool modified);
|
|
|
|
/**
|
|
Returns the current modified state of the wxTopLevelWindow on OS X.
|
|
On other platforms, this method does nothing.
|
|
|
|
@see OSXSetModified()
|
|
*/
|
|
virtual bool OSXIsModified() const;
|
|
|
|
/**
|
|
Sets the file name represented by this wxTopLevelWindow.
|
|
|
|
Under OS X, this file name is used to set the "proxy icon", which
|
|
appears in the window title bar near its title, corresponding to this
|
|
file name. Under other platforms it currently doesn't do anything but
|
|
it is harmless to call it now and it might be implemented to do
|
|
something useful in the future so you're encouraged to use it for any
|
|
window representing a file-based document.
|
|
|
|
@since 2.9.4
|
|
*/
|
|
virtual void SetRepresentedFilename(const wxString& filename);
|
|
|
|
/**
|
|
Show the wxTopLevelWindow, but do not give it keyboard focus. This can be
|
|
used for pop up or notification windows that should not steal the current
|
|
focus.
|
|
*/
|
|
virtual void ShowWithoutActivating();
|
|
|
|
/**
|
|
Enables the maximize button to toggle full screen mode. Prior to
|
|
OS X 10.10 a full screen button is added to the right upper corner
|
|
of a window's title bar.
|
|
|
|
Currently only available for wxOSX/Cocoa.
|
|
|
|
@param enable
|
|
If @true (default) adds the full screen button in the title bar;
|
|
if @false the button is removed.
|
|
|
|
@return @true if the button was added or removed, @false if running
|
|
under another OS.
|
|
|
|
@note Having the button is also required to let ShowFullScreen()
|
|
make use of the full screen API available since OS X 10.7: a full
|
|
screen window gets its own space and entering and exiting the mode
|
|
is animated.
|
|
If the button is not present the old way of switching to full screen
|
|
is used.
|
|
|
|
@onlyfor{wxosx}
|
|
|
|
@see ShowFullScreen()
|
|
|
|
@since 3.1.0
|
|
*/
|
|
virtual bool EnableFullScreenView(bool enable = true);
|
|
|
|
/**
|
|
Depending on the value of @a show parameter the window is either shown
|
|
full screen or restored to its normal state. @a style is a bit list
|
|
containing some or all of the following values, which indicate what
|
|
elements of the window to hide in full-screen mode:
|
|
|
|
- @c ::wxFULLSCREEN_NOMENUBAR
|
|
- @c ::wxFULLSCREEN_NOTOOLBAR
|
|
- @c ::wxFULLSCREEN_NOSTATUSBAR
|
|
- @c ::wxFULLSCREEN_NOBORDER
|
|
- @c ::wxFULLSCREEN_NOCAPTION
|
|
- @c ::wxFULLSCREEN_ALL (all of the above)
|
|
|
|
This function has not been tested with MDI frames.
|
|
|
|
@note Showing a window full screen also actually @ref wxWindow::Show()
|
|
"Show()"s the window if it isn't shown.
|
|
|
|
@see EnableFullScreenView(), IsFullScreen()
|
|
*/
|
|
virtual bool ShowFullScreen(bool show, long style = wxFULLSCREEN_ALL);
|
|
|
|
/**
|
|
This method is specific to wxUniversal port.
|
|
|
|
Use native or custom-drawn decorations for this window only. Notice that
|
|
to have any effect this method must be called before really creating the
|
|
window, i.e. two step creation must be used:
|
|
|
|
@code
|
|
MyFrame *frame = new MyFrame; // use default ctor
|
|
frame->UseNativeDecorations(false); // change from default "true"
|
|
frame->Create(parent, title, ...); // really create the frame
|
|
@endcode
|
|
|
|
@see UseNativeDecorationsByDefault(),
|
|
IsUsingNativeDecorations()
|
|
*/
|
|
void UseNativeDecorations(bool native = true);
|
|
|
|
/**
|
|
This method is specific to wxUniversal port.
|
|
|
|
Top level windows in wxUniversal port can use either system-provided
|
|
window decorations (i.e. title bar and various icons, buttons and menus
|
|
in it) or draw the decorations themselves. By default the system
|
|
decorations are used if they are available, but this method can be
|
|
called with @a native set to @false to change this for all windows
|
|
created after this point.
|
|
|
|
Also note that if @c WXDECOR environment variable is set, then custom
|
|
decorations are used by default and so it may make sense to call this
|
|
method with default argument if the application can't use custom
|
|
decorations at all for some reason.
|
|
|
|
@see UseNativeDecorations()
|
|
*/
|
|
void UseNativeDecorationsByDefault(bool native = true);
|
|
};
|
|
|