Fixed crash-on-exit bug due to status bar being deleted twice (MDI apps);

[wxWidgets.git] / docs / latex / wx / panel.tex

\section{\class{wxPanel}}\label{wxpanel}

A panel is a window on which controls are placed. It is usually placed within a frame.
It contains minimal extra functionality over and above its parent class wxWindow; its main
purpose is to be similar in appearance and functionality to a dialog, but with the flexibility of
having any window as a parent.

{\it Note:} if not all characters are being intercepted by your OnKeyDown or OnChar handler,
it may be because you are using the wxTAB\_TRAVERSAL style, which grabs some keypresses for use
by child controls.

\wxheading{Derived from}

\helpref{wxWindow}{wxwindow}\\
\helpref{wxEvtHandler}{wxevthandler}\\
\helpref{wxObject}{wxobject}

\wxheading{Include files}

<wx/panel.h>

\wxheading{Window styles}

There are no specific styles for this window.

See also \helpref{window styles overview}{windowstyles}.

\wxheading{Remarks}

By default, a panel has the same colouring as a dialog.

A panel may be loaded from a wxWindows resource file (extension {\tt wxr}).

\wxheading{See also}

\helpref{wxDialog}{wxdialog}

\latexignore{\rtfignore{\wxheading{Members}}}

\membersection{wxPanel::wxPanel}\label{wxpanelconstr}

\func{}{wxPanel}{\void}

Default constructor.

\func{}{wxPanel}{\param{wxWindow* }{parent}, \param{wxWindowID }{id},\rtfsp
\param{const wxPoint\& }{pos = wxDefaultPosition},\rtfsp
\param{const wxSize\& }{size = wxDefaultSize},\rtfsp
\param{long}{ style = wxTAB\_TRAVERSAL},\rtfsp
\param{const wxString\& }{name = ``panel"}}

Constructor.

\wxheading{Parameters}

\docparam{parent}{The parent window.}

\docparam{id}{An identifier for the panel. A value of -1 is taken to mean a default.}

\docparam{pos}{The panel position. A value of (-1, -1) indicates a default position, chosen by
either the windowing system or wxWindows, depending on platform.}

\docparam{size}{The panel size. A value of (-1, -1) indicates a default size, chosen by
either the windowing system or wxWindows, depending on platform.}

\docparam{style}{The window style. See \helpref{wxPanel}{wxpanel}.}

\docparam{name}{Used to associate a name with the window,
allowing the application user to set Motif resource values for
individual dialog boxes.}

\wxheading{See also}

\helpref{wxPanel::Create}{wxpanelcreate}

\membersection{wxPanel::\destruct{wxPanel}}

\func{}{\destruct{wxPanel}}{\void}

Destructor. Deletes any child windows before deleting the physical window.

\membersection{wxPanel::Create}\label{wxpanelcreate}

\func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID }{id},\rtfsp
\param{const wxPoint\& }{pos = wxDefaultPosition},\rtfsp
\param{const wxSize\& }{size = wxDefaultSize},\rtfsp
\param{long}{ style = wxTAB\_TRAVERSAL},\rtfsp
\param{const wxString\& }{name = ``panel"}}

Used for two-step panel construction. See \helpref{wxPanel::wxPanel}{wxpanelconstr}\rtfsp
for details.

\membersection{wxPanel::GetDefaultItem}\label{wxpanelgetdefaultitem}

\constfunc{wxButton*}{GetDefaultItem}{\void}

Returns a pointer to the button which is the default for this window, or NULL.
The default button is the one activated by pressing the Enter key.

\membersection{wxPanel::InitDialog}\label{wxpanelinitdialog}

\func{void}{InitDialog}{\void}

Sends an \helpref{wxWindow::OnInitDialog}{wxwindowoninitdialog} event, which
in turn transfers data to the dialog via validators.

\wxheading{See also}

\helpref{wxWindow::OnInitDialog}{wxwindowoninitdialog}

\membersection{wxPanel::OnSysColourChanged}\label{wxpanelonsyscolourchanged}

\func{void}{OnSysColourChanged}{\param{wxSysColourChangedEvent\& }{event}}

The default handler for wxEVT\_SYS\_COLOUR\_CHANGED.

\wxheading{Parameters}

\docparam{event}{The colour change event.}

\wxheading{Remarks}

Changes the panel's colour to conform to the current settings (Windows only).
Add an event table entry for your panel class if you wish the behaviour
to be different (such as keeping a user-defined
background colour). If you do override this function, call \helpref{wxWindow::OnSysColourChanged}{wxwindowonsyscolourchanged} to
propagate the notification to child windows and controls.

\wxheading{See also}

\helpref{wxSysColourChangedEvent}{wxsyscolourchangedevent}

\membersection{wxPanel::SetDefaultItem}\label{wxpanelsetdefaultitem}

\func{void}{SetDefaultItem}{\param{wxButton }{*btn}}

Changes the default button for the panel.

\wxheading{See also}

\helpref{GetDefaultItem}{wxpanelgetdefaultitem}