+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Name: window.tex
+%% Purpose: wxWindow documentation
+%% Author: wxWidgets Team
+%% Modified by:
+%% Created:
+%% RCS-ID: $Id$
+%% Copyright: (c) wxWidgets Team
+%% License: wxWindows license
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
\section{\class{wxWindow}}\label{wxwindow}
wxWindow is the base class for all windows and represents any visible object on
have to worry about deleting them manually. Please see the \helpref{window
deletion overview}{windowdeletionoverview} for more information.
-Also note that in this, and many others, wxWidgets classes some
-\texttt{GetXXX()} methods may be overloaded (as, for example,
-\helpref{GetSize}{wxwindowgetsize} or
+Also note that in this, and many others, wxWidgets classes some
+\texttt{GetXXX()} methods may be overloaded (as, for example,
+\helpref{GetSize}{wxwindowgetsize} or
\helpref{GetClientSize}{wxwindowgetclientsize}). In this case, the overloads
are non-virtual because having multiple virtual functions with the same name
results in a virtual function name hiding at the derived class level (in
\docparam{child}{Child window to add.}
+\membersection{wxWindow::CacheBestSize}\label{wxwindowcachebestsize}
+
+\constfunc{void}{CacheBestSize}{\param{const wxSize\& }{size}}
+
+Sets the cached best size value.
+
+
\membersection{wxWindow::CaptureMouse}\label{wxwindowcapturemouse}
\func{virtual void}{CaptureMouse}{\void}
dialog, since it will simply simulate an wxID\_CANCEL event which is handled by
the appropriate button event handler and may do anything at all.
-To guarantee that the window will be destroyed, call
+To guarantee that the window will be destroyed, call
\helpref{wxWindow::Destroy}{wxwindowdestroy} instead
\wxheading{See also}
already disabled before the call to this function.
+\membersection{wxWindow::DoGetBestSize}\label{wxwindowdogetbestsize}
+
+\constfunc{virtual wxSize}{DoGetBestSize}{\void}
+
+Gets the size which best suits the window: for a control, it would be
+the minimal size which doesn't truncate the control, for a panel - the
+same size as it would have after a call to \helpref{Fit()}{wxwindowfit}.
+
+
\membersection{wxWindow::DoUpdateWindowUI}\label{wxwindowdoupdatewindowui}
\func{virtual void}{DoUpdateWindowUI}{\param{wxUpdateUIEvent\&}{ event}}
Does the window-specific updating after processing the update event.
-This function is called by \helpref{wxWindow::UpdateWindowUI}{wxwindowupdatewindowui}
+This function is called by \helpref{wxWindow::UpdateWindowUI}{wxwindowupdatewindowui}
in order to check return values in the \helpref{wxUpdateUIEvent}{wxupdateuievent} and
act appropriately. For example, to allow frame and dialog title updating, wxWidgets
implements this function as follows:
{
if ( event.GetSetEnabled() )
Enable(event.GetEnabled());
-
+
if ( event.GetSetText() )
{
if ( event.GetText() != GetTitle() )
\wxheading{See also}
\helpref{wxWindow::IsEnabled}{wxwindowisenabled},\rtfsp
-\helpref{wxWindow::Disable}{wxwindowdisable}
+\helpref{wxWindow::Disable}{wxwindowdisable},\rtfsp
+\helpref{wxRadioBox::Enable}{wxradioboxenable}
\membersection{wxWindow::FindFocus}\label{wxwindowfindfocus}
\membersection{wxWindow::FindWindow}\label{wxwindowfindwindow}
-\func{wxWindow*}{FindWindow}{\param{long}{ id}}
+\constfunc{wxWindow*}{FindWindow}{\param{long}{ id}}
Find a child of this window, by identifier.
-\func{wxWindow*}{FindWindow}{\param{const wxString\&}{ name}}
+\constfunc{wxWindow*}{FindWindow}{\param{const wxString\&}{ name}}
Find a child of this window, by name.
frames and dialog boxes; if non-NULL, the search will be limited to the given window hierarchy.
The search is recursive in both cases.
-If no window with such name is found,
+If no window with such name is found,
\helpref{FindWindowByLabel}{wxwindowfindwindowbylabel} is called.
\wxheading{See also}
nested.
This method is useful for visual appearance optimization (for example, it
-is a good idea to use it before inserting large amount of text into a
-wxTextCtrl under wxGTK) but is not implemented on all platforms nor for all
+is a good idea to use it before doing many large text insertions in a row into
+a wxTextCtrl under wxGTK) but is not implemented on all platforms nor for all
controls so it is mostly just a hint to wxWidgets and not a mandatory
directive.
\wxheading{See also}
-\helpref{wxWindow::HasCapture}{wxwindowhascapture},
-\helpref{wxWindow::CaptureMouse}{wxwindowcapturemouse},
-\helpref{wxWindow::ReleaseMouse}{wxwindowreleasemouse},
+\helpref{wxWindow::HasCapture}{wxwindowhascapture},
+\helpref{wxWindow::CaptureMouse}{wxwindowcapturemouse},
+\helpref{wxWindow::ReleaseMouse}{wxwindowreleasemouse},
\helpref{wxMouseCaptureChangedEvent}{wxmousecapturechangedevent}
The \arg{variant} parameter is only relevant under Mac currently and is
ignore under other platforms. Under Mac, it will change the size of the
-returned font. See \helpref{wxWindow::SetWindowVariant}{wxwindowsetwindowvariant}
+returned font. See \helpref{wxWindow::SetWindowVariant}{wxwindowsetwindowvariant}
for more about this.
This static method is ``overridden'' in many derived classes and so calling,
return the values appropriate for a button which will be normally different
from those returned by, say, \helpref{wxListCtrl}{wxlistctrl}::GetClassDefaultAttributes().
-The \texttt{wxVisualAttributes} structure has at least the fields
+The \texttt{wxVisualAttributes} structure has at least the fields
\texttt{font}, \texttt{colFg} and \texttt{colBg}. All of them may be invalid
if it was not possible to determine the default control appearance or,
especially for the background colour, if the field doesn't make sense as is
\constfunc{virtual wxVisualAttributes}{GetDefaultAttributes}{\void}
-Currently this is the same as calling
+Currently this is the same as calling
\helpref{GetClassDefaultAttributes}{wxwindowgetclassdefaultattributes}(\helpref{GetWindowVariant}{wxwindowgetwindowvariant}()).
One advantage of using this function compared to the static version is that
\constfunc{void*}{GetHandle}{\void}
Returns the platform-specific handle of the physical window. Cast it to an appropriate
-handle, such as {\bf HWND} for Windows, {\bf Widget} for Motif or {\bf GtkWidget} for GTK.
+handle, such as {\bf HWND} for Windows, {\bf Widget} for Motif, {\bf GtkWidget} for GTK or {\bf WinHandle} for PalmOS.
\pythonnote{This method will return an integer in wxPython.}
Returns the size and position of the window as a \helpref{wxRect}{wxrect} object.
-\membersection{wxWindow::GetScrollThumb}\label{wxwindowgetscrollthumb}
-
-\func{virtual int}{GetScrollThumb}{\param{int }{orientation}}
-
-Returns the built-in scrollbar thumb size.
-
-\wxheading{See also}
-
-\helpref{wxWindow::SetScrollbar}{wxwindowsetscrollbar}
-
-
\membersection{wxWindow::GetScrollPos}\label{wxwindowgetscrollpos}
\func{virtual int}{GetScrollPos}{\param{int }{orientation}}
\helpref{wxWindow::SetScrollbar}{wxwindowsetscrollbar}
+\membersection{wxWindow::GetScrollThumb}\label{wxwindowgetscrollthumb}
+
+\func{virtual int}{GetScrollThumb}{\param{int }{orientation}}
+
+Returns the built-in scrollbar thumb size.
+
+\wxheading{See also}
+
+\helpref{wxWindow::SetScrollbar}{wxwindowsetscrollbar}
+
+
\membersection{wxWindow::GetSize}\label{wxwindowgetsize}
\constfunc{void}{GetSize}{\param{int* }{width}, \param{int* }{height}}
\constfunc{wxSize}{GetVirtualSize}{\void}
-This gets the virtual size of the window in pixels.
+This gets the virtual size of the window in pixels. By default it
+returns the client size of the window, but after a call to
+\helpref{SetVirtualSize}{wxwindowsetvirtualsize} it will return
+that size.
\wxheading{Parameters}
\constfunc{wxWindowVariant}{GetWindowVariant}{\void}
-Returns the value previous passed to
+Returns the value previously passed to
\helpref{wxWindow::SetWindowVariant}{wxwindowsetwindowvariant}.
\constfunc{virtual bool}{HasCapture}{\void}
-Returns true if this window has the current mouse capture.
+Returns {\tt true} if this window has the current mouse capture.
\wxheading{See also}
-\helpref{wxWindow::CaptureMouse}{wxwindowcapturemouse},
-\helpref{wxWindow::ReleaseMouse}{wxwindowreleasemouse},
+\helpref{wxWindow::CaptureMouse}{wxwindowcapturemouse},
+\helpref{wxWindow::ReleaseMouse}{wxwindowreleasemouse},
\helpref{wxMouseCaptureChangedEvent}{wxmousecapturechangedevent}
+\membersection{wxWindow::HasScrollbar}\label{wxwindowhasscrollbar}
+
+\constfunc{virtual bool}{HasScrollbar}{\param{int }{orient}}
+
+Returns {\tt true} if this window has a scroll bar for this orientation.
+
+\wxheading{Parameters}
+
+\docparam{orient}{Orientation to check, either {\tt wxHORIZONTAL} or {\tt wxVERTICAL}.}
+
+
+\membersection{wxWindow::HasTransparentBackground}\label{wxwindowhastransparentbackground}
+
+\constfunc{virtual bool}{HasTransparentBackground}{\void}
+
+Returns \true if this window background is transparent (as, for example, for
+wxStaticText) and should show the parent window background.
+
+This method is mostly used internally by the library itself and you normally
+shouldn't have to call it. You may, however, have to override it in your
+wxWindow-derived class to ensure that background is painted correctly.
+
+
\membersection{wxWindow::Hide}\label{wxwindowhide}
\func{bool}{Hide}{\void}
By ``intelligently'' the following is meant: by default, all windows use their
own \helpref{default}{wxwindowgetclassdefaultattributes} attributes. However
-if some of the parents attributes are explicitly (that is, using
-\helpref{SetFont}{wxwindowsetfont} and not
+if some of the parents attributes are explicitly (that is, using
+\helpref{SetFont}{wxwindowsetfont} and not
\helpref{SetOwnFont}{wxwindowsetownfont}) changed \emph{and} if the
corresponding attribute hadn't been explicitly set for this window itself,
then this window takes the same value as used by the parent. In addition, if
-the window overrides \helpref{ShouldInheritColours}{wxwindowshouldinheritcolours}
+the window overrides \helpref{ShouldInheritColours}{wxwindowshouldinheritcolours}
to return \false, the colours will not be changed no matter what and only the
font might.
to the dialog via validators.
+\membersection{wxWindow::InvalidateBestSize}\label{wxwindowinvalidatebestsize}
+
+\func{void}{InvalidateBestSize}{\void}
+
+Resets the cached best size value so it will be recalculated the next time it is needed.
+
+
\membersection{wxWindow::IsEnabled}\label{wxwindowisenabled}
\constfunc{virtual bool}{IsEnabled}{\void}
\membersection{wxWindow::LineDown}\label{wxwindowlinedown}
-This is just a wrapper for \helpref{ScrollLines()}{wxwindowscrolllines}$(1)$.
+This is just a wrapper for \helpref{ScrollLines}{wxwindowscrolllines}$(1)$.
\membersection{wxWindow::LineUp}\label{wxwindowlineup}
-This is just a wrapper for \helpref{ScrollLines()}{wxwindowscrolllines}$(-1)$.
+This is just a wrapper for \helpref{ScrollLines}{wxwindowscrolllines}$(-1)$.
\membersection{wxWindow::Lower}\label{wxwindowlower}
This means that when the user presses \texttt{TAB} key on that other window,
the focus switches to this window.
-Default tab order is the same as creation order, this function and
+Default tab order is the same as creation order, this function and
\helpref{MoveBeforeInTabOrder()}{wxwindowmovebeforeintaborder} allow to change
it after creating all the windows.
handler in a derived class.
This function may be used to do delayed painting, for example,
-and most implementations call \helpref{wxWindow::UpdateWindowUI}{wxwindowupdatewindowui}
+and most implementations call \helpref{wxWindow::UpdateWindowUI}{wxwindowupdatewindowui}
in order to send update events to the window in idle time.
\membersection{wxWindow::Refresh}\label{wxwindowrefresh}
-\func{virtual void}{Refresh}{\param{bool}{ eraseBackground = {\tt true}}, \param{const wxRect* }{rect
-= NULL}}
+\func{virtual void}{Refresh}{\param{bool}{ eraseBackground = {\tt true}}, \param{const wxRect* }{rect = NULL}}
-Causes an event to be generated to repaint the
-window.
+Causes this window, and all of its children recursively (except under wxGTK1
+where this is not implemented), to be repainted. Note that repainting doesn't
+happen immediately but only during the next event loop iteration, if you need
+to update the window immediately you should use \helpref{Update}{wxwindowupdate}
+instead.
\wxheading{Parameters}
\membersection{wxWindow::RefreshRect}\label{wxwindowrefreshrect}
-\func{void}{RefreshRect}{\param{const wxRect\& }{rect}}
+\func{void}{RefreshRect}{\param{const wxRect\& }{rect}, \param{bool }{eraseBackground = \true}}
-Redraws the contents of the given rectangle: the area inside it will be
+Redraws the contents of the given rectangle: only the area inside it will be
repainted.
-This is the same as \helpref{Refresh}{wxwindowrefresh} but has a nicer syntax.
+This is the same as \helpref{Refresh}{wxwindowrefresh} but has a nicer syntax
+as it can be called with a temporary wxRect object as argument like this
+\texttt{RefreshRect(wxRect(x, y, w, h))}.
\membersection{wxWindow::RegisterHotKey}\label{wxwindowregisterhotkey}
\wxheading{Remarks}
Use EVT\_HOTKEY(hotkeyId, fnc) in the event table to capture the event.
-This function is currently only implemented under MSW.
+This function is currently only implemented under Windows. It is used
+in the \helpref{Windows CE port}{wxwince} for detecting hardware button presses.
\wxheading{See also}
\wxheading{See also}
-\helpref{wxWindow::CaptureMouse}{wxwindowcapturemouse},
-\helpref{wxWindow::HasCapture}{wxwindowhascapture},
-\helpref{wxWindow::ReleaseMouse}{wxwindowreleasemouse},
+\helpref{wxWindow::CaptureMouse}{wxwindowcapturemouse},
+\helpref{wxWindow::HasCapture}{wxwindowhascapture},
+\helpref{wxWindow::ReleaseMouse}{wxwindowreleasemouse},
\helpref{wxMouseCaptureChangedEvent}{wxmousecapturechangedevent}
\func{void}{SetAutoLayout}{\param{bool}{ autoLayout}}
Determines whether the \helpref{wxWindow::Layout}{wxwindowlayout} function will
-be called automatically when the window is resized. It is called implicitly by
-\helpref{wxWindow::SetSizer}{wxwindowsetsizer} but if you use
+be called automatically when the window is resized. It is called implicitly by
+\helpref{wxWindow::SetSizer}{wxwindowsetsizer} but if you use
\helpref{wxWindow::SetConstraints}{wxwindowsetconstraints} you should call it
manually or otherwise the window layout won't be correctly updated when its
size changes.
Sets the background colour of the window.
Please see \helpref{InheritAttributes}{wxwindowinheritattributes} for
-explanation of the difference between this method and
+explanation of the difference between this method and
\helpref{SetOwnBackgroundColour}{wxwindowsetownbackgroundcolour}.
\wxheading{Parameters}
explicitly. When setting both a wxLayoutConstraints and a \helpref{wxSizer}{wxsizer}, only the
sizer will have effect.
+\membersection{wxWindow::SetInitialBestSize}\label{wxwindowsetinitialbestsize}
+
+\func{virtual void}{SetInitialBestSize}{\param{const wxSize\& }{size}}
+
+Sets the initial window size if none is given (i.e. at least one of the
+components of the size passed to ctor/Create() is wxDefaultCoord).
+
\membersection{wxWindow::SetMaxSize}\label{wxwindowsetmaxsize}
\func{void}{SetMaxSize}{\param{const wxSize\& }{size}}
\membersection{wxWindow::SetOwnFont}\label{wxwindowsetownfont}
-\func{void}{SetOwnBackgroundColour}{\param{const wxColour\& }{colour}}
+\func{void}{SetOwnFont}{\param{const wxFont\& }{font}}
Sets the font of the window but prevents it from being inherited by the
children of this window.
\wxheading{See also}
\helpref{wxFocusEvent}{wxfocusevent}
+\helpref{wxPanel::SetFocus}{wxpanelsetfocus}
+\helpref{wxPanel::SetFocusIgnoringChildren}{wxpanelsetfocusignoringchildren}
\membersection{wxWindow::SetFocusFromKbd}\label{wxwindowsetfocusfromkbd}
Sets the foreground colour of the window.
Please see \helpref{InheritAttributes}{wxwindowinheritattributes} for
-explanation of the difference between this method and
+explanation of the difference between this method and
\helpref{SetOwnForegroundColour}{wxwindowsetownforegroundcolour}.
\wxheading{Parameters}
+\membersection{wxWindow::SetLabel}\label{wxwindowsetlabel}
+
+\func{virtual void}{SetLabel}{\param{const wxString\& }{label}}
+
+Sets the window's label.
+
+\wxheading{Parameters}
+
+\docparam{label}{The window label.}
+
+\wxheading{See also}
+
+\helpref{wxWindow::GetLabel}{wxwindowgetlabel}
+
+
\membersection{wxWindow::SetName}\label{wxwindowsetname}
\func{virtual void}{SetName}{\param{const wxString\& }{name}}
\wxheading{See also}
\helpref{wxWindow::SetScrollPos}{wxwindowsetscrollpos},\rtfsp
-\helpref{wxWindow::GetScrollPos}{wxwindowsetscrollpos},\rtfsp
-\helpref{wxWindow::GetScrollPage}{wxwindowsetscrollpage},\rtfsp
+\helpref{wxWindow::GetScrollPos}{wxwindowgetscrollpos},\rtfsp
+\helpref{wxWindow::GetScrollPage}{wxwindowgetscrollpage},\rtfsp
\helpref{wxScrollBar}{wxscrollbar}, \helpref{wxScrolledWindow}{wxscrolledwindow}
\end{comment}
\wxheading{See also}
\helpref{wxWindow::SetScrollbar}{wxwindowsetscrollbar},\rtfsp
-\helpref{wxWindow::GetScrollPos}{wxwindowsetscrollpos},\rtfsp
+\helpref{wxWindow::GetScrollPos}{wxwindowgetscrollpos},\rtfsp
\helpref{wxWindow::GetScrollThumb}{wxwindowgetscrollthumb},\rtfsp
\helpref{wxScrollBar}{wxscrollbar}, \helpref{wxScrolledWindow}{wxscrolledwindow}
\helpref{wxWindow::SetScrollPos}{wxwindowsetscrollpos},\rtfsp
\helpref{wxWindow::SetScrollPage}{wxwindowsetscrollpage},\rtfsp
-\helpref{wxWindow::GetScrollPos}{wxwindowsetscrollpos},\rtfsp
-\helpref{wxWindow::GetScrollPage}{wxwindowsetscrollpage},\rtfsp
+\helpref{wxWindow::GetScrollPos}{wxwindowgetscrollpos},\rtfsp
+\helpref{wxWindow::GetScrollPage}{wxwindowgetscrollpage},\rtfsp
\helpref{wxScrollBar}{wxscrollbar}, \helpref{wxScrolledWindow}{wxscrolledwindow}
\end{comment}
If an existing layout constraints object is already owned by the
window, it will be deleted if the deleteOld parameter is true.
-Note that this function will also call
+Note that this function will also call
\helpref{SetAutoLayout}{wxwindowsetautolayout} implicitly with {\tt true}
parameter if the {\it sizer}\/ is non-NULL and {\tt false} otherwise.
\func{virtual void}{SetVirtualSizeHints}{\param{int}{ minW},\param{int}{ minH}, \param{int}{ maxW=-1}, \param{int}{ maxH=-1}}
-\func{void}{SetVirtualSizeHints}{\param{const wxSize\&}{ minSize=wxDefaultSize},
+\func{void}{SetVirtualSizeHints}{\param{const wxSize\&}{ minSize=wxDefaultSize},
\param{const wxSize\&}{ maxSize=wxDefaultSize}}
\func{virtual bool}{ShouldInheritColours}{\void}
-Return \true from here to allow the colours of this window to be changed by
+Return \true from here to allow the colours of this window to be changed by
\helpref{InheritAttributes}{wxwindowinheritattributes}, returning \false
forbids inheriting them from the parent window.
-The base class version returns \false, but this method is overridden in
+The base class version returns \false, but this method is overridden in
\helpref{wxControl}{wxcontrol} where it returns \true.
\wxheading{See also}
-\helpref{wxWindow::IsShown}{wxwindowisshown}
-
+\helpref{wxWindow::IsShown}{wxwindowisshown},\rtfsp
+\helpref{wxWindow::Hide}{wxwindowhide},\rtfsp
+\helpref{wxRadioBox::Show}{wxradioboxshow}
\membersection{wxWindow::Thaw}\label{wxwindowthaw}
\func{virtual void}{Thaw}{\void}
-Reenables window updating after a previous call to
+Reenables window updating after a previous call to
\helpref{Freeze}{wxwindowfreeze}. To really thaw the control, it must be called
exactly the same number of times as \helpref{Freeze}{wxwindowfreeze}.
\func{virtual void}{Update}{\void}
-Calling this method immediately repaints the invalidated area of the window
-while this would usually only happen when the flow of control returns to the
-event loop. Notice that this function doesn't refresh the window and does
-nothing if the window hadn't been already repainted. Use
-\helpref{Refresh}{wxwindowrefresh} first if you want to immediately redraw the
-window unconditionally.
+Calling this method immediately repaints the invalidated area of the window and
+all of its children recursively while this would usually only happen when the
+flow of control returns to the event loop. Notice that this function doesn't
+refresh the window and does nothing if the window hadn't been already
+repainted. Use \helpref{Refresh}{wxwindowrefresh} first if you want to
+immediately redraw the window unconditionally.
\membersection{wxWindow::UpdateWindowUI}\label{wxwindowupdatewindowui}
and a wxFrame will send an update UI event for each menubar menu item.
You can call this function from your application to ensure that your
UI is up-to-date at this point (as far as your wxUpdateUIEvent handlers
-are concerned). This may be necessary if you have called
-\helpref{wxUpdateUIEvent::SetMode}{wxupdateuieventsetmode} or
+are concerned). This may be necessary if you have called
+\helpref{wxUpdateUIEvent::SetMode}{wxupdateuieventsetmode} or
\helpref{wxUpdateUIEvent::SetUpdateInterval}{wxupdateuieventsetupdateinterval} to
limit the overhead that wxWidgets incurs by sending update UI events in idle time.
\wxheading{See also}
-\helpref{wxUpdateUIEvent}{wxupdateuievent},
-\helpref{wxWindow::DoUpdateWindowUI}{wxwindowdoupdatewindowui},
+\helpref{wxUpdateUIEvent}{wxupdateuievent},
+\helpref{wxWindow::DoUpdateWindowUI}{wxwindowdoupdatewindowui},
\helpref{wxWindow::OnInternalIdle}{wxwindowoninternalidle}
\wxheading{See also}
\helpref{wxWindow::TransferDataFromWindow}{wxwindowtransferdatafromwindow},\rtfsp
-\helpref{wxWindow::TransferDataFromWindow}{wxwindowtransferdatafromwindow},\rtfsp
+\helpref{wxWindow::TransferDataToWindow}{wxwindowtransferdatatowindow},\rtfsp
\helpref{wxValidator}{wxvalidator}
projects / wxWidgets.git / blobdiff