+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%% Name: dialog.tex
+%% Purpose: wxDialog documentation
+%% Author: wxWidgets Team
+%% Modified by:
+%% Created:
+%% RCS-ID: $Id$
+%% Copyright: (c) wxWidgets Team
+%% License: wxWindows license
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
\section{\class{wxDialog}}\label{wxdialog}
-A dialog box is a window with a title bar and sometimes a system menu, which can be moved around
-the screen. It can contain controls and other windows.
+A dialog box is a window with a title bar and sometimes a system menu, which
+can be moved around the screen. It can contain controls and other windows and
+is often used to allow the user to make some choice or to answer a question.
+
+
+\wxheading{Dialog Buttons}
+
+The dialog usually contains either a single button allowing to close the
+dialog or two buttons, one accepting the changes and the other one discarding
+them (such button, if present, is automatically activated if the user presses
+the \texttt{"Esc"} key). By default, buttons with the standard \texttt{wxID\_OK}
+and \texttt{wxID\_CANCEL} identifiers behave as expected. Starting with
+wxWidgets 2.7 it is also possible to use a button with a different identifier
+instead, see \helpref{SetAffirmativeId}{wxdialogsetaffirmativeid} and
+\helpref{SetEscapeId}{wxdialogsetescapeid}.
+
+Also notice that the \helpref{CreateButtonSizer()}{wxdialogcreatebuttonsizer}
+should be used to create the buttons appropriate for the current platform and
+positioned correctly (including their order which is platform-dependent).
+
+
\wxheading{Derived from}
-\helpref{wxPanel}{wxpanel}\\
+\helpref{wxTopLevelWindow}{wxtoplevelwindow}\\
\helpref{wxWindow}{wxwindow}\\
\helpref{wxEvtHandler}{wxevthandler}\\
\helpref{wxObject}{wxobject}
<wx/dialog.h>
-\wxheading{Remarks}
-
-There are two kinds of dialog - {\it modal} and {\it modeless}. A modal dialog
-blocks program flow and user input on other windows until it is dismissed, whereas a modeless dialog behaves more
-like a frame in that program flow continues, and input on other windows is still possible.
-You specify the type of dialog with the {\bf wxDIALOG\_MODAL} and {\bf wxDIALOG\_MODELESS} window
-styles.
-
-A dialog may be loaded from a wxWindows resource file (extension {\tt wxr}).
-
-An application can define an \helpref{OnCloseWindow}{wxwindowonclosewindow} handler for the
-dialog to respond to system close events.
+\wxheading{Modal and modeless dialogs}
+
+There are two kinds of dialog -- {\it modal}\ and {\it modeless}. A modal dialog
+blocks program flow and user input on other windows until it is dismissed,
+whereas a modeless dialog behaves more like a frame in that program flow
+continues, and input in other windows is still possible. To show a modal dialog
+you should use the \helpref{ShowModal}{wxdialogshowmodal} method while to show
+a dialog modelessly you simply use \helpref{Show}{wxdialogshow}, just as with
+frames.
+
+Note that the modal dialog is one of the very few examples of
+wxWindow-derived objects which may be created on the stack and not on the heap.
+In other words, although this code snippet:
+
+\begin{verbatim}
+ void AskUser()
+ {
+ MyAskDialog *dlg = new MyAskDialog(...);
+ if ( dlg->ShowModal() == wxID_OK )
+ ...
+ //else: dialog was cancelled or some another button pressed
+
+ dlg->Destroy();
+ }
+\end{verbatim}
+
+works, you can also achieve the same result by using a simpler code fragment
+below:
+
+\begin{verbatim}
+ void AskUser()
+ {
+ MyAskDialog dlg(...);
+ if ( dlg.ShowModal() == wxID_OK )
+ ...
+
+ // no need to call Destroy() here
+ }
+\end{verbatim}
+
+An application can define a \helpref{wxCloseEvent}{wxcloseevent} handler for
+the dialog to respond to system close events.
\wxheading{Window styles}
\twocolwidtha{5cm}
\begin{twocollist}\itemsep=0pt
-\twocolitem{\windowstyle{wxCAPTION}}{Puts a caption on the dialog box (Motif only).}
-\twocolitem{\windowstyle{wxDEFAULT\_DIALOG\_STYLE}}{Equivalent to a combination of wxCAPTION, wxSYSTEM\_MENU and wxTHICK\_FRAME}
-\twocolitem{\windowstyle{wxRESIZE\_BORDER}}{Display a resizeable frame around the window (Unix only).}
+\twocolitem{\windowstyle{wxCAPTION}}{Puts a caption on the dialog box.}
+\twocolitem{\windowstyle{wxDEFAULT\_DIALOG\_STYLE}}{Equivalent to a combination of wxCAPTION, wxCLOSE\_BOX and wxSYSTEM\_MENU (the last one is not used under Unix)}
+\twocolitem{\windowstyle{wxRESIZE\_BORDER}}{Display a resizeable frame around the window.}
\twocolitem{\windowstyle{wxSYSTEM\_MENU}}{Display a system menu.}
+\twocolitem{\windowstyle{wxCLOSE\_BOX}}{Displays a close box on the frame.}
+\twocolitem{\windowstyle{wxMAXIMIZE\_BOX}}{Displays a maximize box on the dialog.}
+\twocolitem{\windowstyle{wxMINIMIZE\_BOX}}{Displays a minimize box on the dialog.}
\twocolitem{\windowstyle{wxTHICK\_FRAME}}{Display a thick frame around the window.}
-\twocolitem{\windowstyle{wxSTAY\_ON\_TOP}}{The dialog stays on top of all other windows (Windows only).}
+\twocolitem{\windowstyle{wxSTAY\_ON\_TOP}}{The dialog stays on top of all other windows.}
\twocolitem{\windowstyle{wxNO\_3D}}{Under Windows, specifies that the child controls
should not have 3D borders unless specified in the control.}
+\twocolitem{\windowstyle{wxDIALOG\_NO\_PARENT}}{By default, a dialog created
+with a {\tt NULL} parent window will be given the
+\helpref{application's top level window}{wxappgettopwindow} as parent. Use this
+style to prevent this from happening and create an orphan dialog. This is not recommended for modal dialogs.}
+\twocolitem{\windowstyle{wxDIALOG\_EX\_CONTEXTHELP}}{Under Windows, puts a query button on the
+caption. When pressed, Windows will go into a context-sensitive help mode and wxWidgets will send
+a wxEVT\_HELP event if the user clicked on an application window. {\it Note}\ that this is an extended
+style and must be set by calling \helpref{SetExtraStyle}{wxwindowsetextrastyle} before Create is called (two-step construction).}
+\twocolitem{\windowstyle{wxDIALOG\_EX\_METAL}}{On Mac OS X, frames with this style will be shown with a metallic look. This is an {\it extra} style.}
\end{twocollist}
-Under Unix or Linux, MWM (the Motif Window Manager) or other window managers reckognizing
-the MHM hints should be running for any of these styles to have an effect.
+Under Unix or Linux, MWM (the Motif Window Manager) or other window managers
+recognizing the MHM hints should be running for any of these styles to have an
+effect.
See also \helpref{Generic window styles}{windowstyles}.
\wxheading{See also}
-\helpref{wxDialog overview}{wxdialogoverview}, \helpref{wxFrame}{wxframe}, \helpref{Resources}{resources},\rtfsp
+\helpref{wxDialog overview}{wxdialogoverview}, \helpref{wxFrame}{wxframe},\rtfsp
\helpref{Validator overview}{validatoroverview}
\latexignore{\rtfignore{\wxheading{Members}}}
-\membersection{wxDialog::wxDialog}\label{wxdialogconstr}
+
+\membersection{wxDialog::wxDialog}\label{wxdialogctor}
\func{}{wxDialog}{\void}
\docparam{title}{The title of the dialog.}
\docparam{pos}{The dialog position. A value of (-1, -1) indicates a default position, chosen by
-either the windowing system or wxWindows, depending on platform.}
+either the windowing system or wxWidgets, depending on platform.}
\docparam{size}{The dialog size. A value of (-1, -1) indicates a default size, chosen by
-either the windowing system or wxWindows, depending on platform.}
+either the windowing system or wxWidgets, depending on platform.}
\docparam{style}{The window style. See \helpref{wxDialog}{wxdialog}.}
\helpref{wxDialog::Create}{wxdialogcreate}
-\membersection{wxDialog::\destruct{wxDialog}}
+
+\membersection{wxDialog::\destruct{wxDialog}}\label{wxdialogdtor}
\func{}{\destruct{wxDialog}}{\void}
Destructor. Deletes any child windows before deleting the physical window.
+
\membersection{wxDialog::Centre}\label{wxdialogcentre}
\func{void}{Centre}{\param{int}{ direction = wxBOTH}}
\docparam{direction}{May be {\tt wxHORIZONTAL}, {\tt wxVERTICAL} or {\tt wxBOTH}.}
+
\membersection{wxDialog::Create}\label{wxdialogcreate}
\func{bool}{Create}{\param{wxWindow* }{parent}, \param{wxWindowID }{id},\rtfsp
\param{long}{ style = wxDEFAULT\_DIALOG\_STYLE},\rtfsp
\param{const wxString\& }{name = ``dialogBox"}}
-Used for two-step dialog box construction. See \helpref{wxDialog::wxDialog}{wxdialogconstr}\rtfsp
+Used for two-step dialog box construction. See \helpref{wxDialog::wxDialog}{wxdialogctor}\rtfsp
for details.
+
+\membersection{wxDialog::CreateButtonSizer}\label{wxdialogcreatebuttonsizer}
+
+\func{wxSizer*}{CreateButtonSizer}{\param{long}{ flags}}
+
+Creates a sizer with standard buttons. {\it flags} is a bit list
+of the following flags: wxOK, wxCANCEL, wxYES, wxNO, wxAPPLY, wxCLOSE,
+wxHELP, wxNO\_DEFAULT.
+
+The sizer lays out the buttons in a manner appropriate to the platform.
+
+This function uses \helpref{CreateStdDialogButtonSizer}{wxdialogcreatestddialogbuttonsizer}
+internally for most platforms but doesn't create the sizer at all for the
+platforms with hardware buttons (such as smartphones) for which it sets up the
+hardware buttons appropriately and returns \NULL, so don't forget to test that
+the return value is valid before using it.
+
+
+\membersection{wxDialog::CreateSeparatedButtonSizer}\label{wxdialogcreateseparatedbuttonsizer}
+
+\func{wxSizer*}{CreateSeparatedButtonSizer}{\param{long}{ flags}}
+
+Creates a sizer with standard buttons using
+\helpref{CreateButtonSizer}{wxdialogcreatebuttonsizer} separated from the rest
+of the dialog contents by a horizontal \helpref{wxStaticLine}{wxstaticline}.
+
+Please notice that just like CreateButtonSizer() this function may return \NULL
+if no buttons were created.
+
+
+\membersection{wxDialog::CreateStdDialogButtonSizer}\label{wxdialogcreatestddialogbuttonsizer}
+
+\func{wxStdDialogButtonSizer*}{CreateStdDialogButtonSizer}{\param{long}{ flags}}
+
+Creates a \helpref{wxStdDialogButtonSizer}{wxstddialogbuttonsizer} with standard buttons. {\it flags} is a bit list
+of the following flags: wxOK, wxCANCEL, wxYES, wxNO, wxAPPLY, wxCLOSE,
+wxHELP, wxNO\_DEFAULT.
+
+The sizer lays out the buttons in a manner appropriate to the platform.
+
+
+\membersection{wxDialog::DoOK}\label{wxdialogdook}
+
+\func{virtual bool}{DoOK}{\void}
+
+This function is called when the titlebar OK button is pressed (PocketPC only).
+A command event for the identifier returned by GetAffirmativeId is sent by
+default. You can override this function. If the function returns false, wxWidgets
+will call Close() for the dialog.
+
+
\membersection{wxDialog::EndModal}\label{wxdialogendmodal}
\func{void}{EndModal}{\param{int }{retCode}}
\helpref{wxDialog::GetReturnCode}{wxdialoggetreturncode},\rtfsp
\helpref{wxDialog::SetReturnCode}{wxdialogsetreturncode}
+
+\membersection{wxDialog::GetAffirmativeId}\label{wxdialoggetaffirmativeid}
+
+\constfunc{int}{GetAffirmativeId}{\void}
+
+Gets the identifier of the button which works like standard OK button in this
+dialog.
+
+\wxheading{See also}
+
+\helpref{wxDialog::SetAffirmativeId}{wxdialogsetaffirmativeid}
+
+
+\membersection{wxDialog::GetEscapeId}\label{wxdialoggetescapeid}
+
+\constfunc{int}{GetEscapeId}{\void}
+
+Gets the identifier of the button to map presses of \texttt{\textsc{ESC}}
+button to.
+
+\wxheading{See also}
+
+\helpref{wxDialog::SetEscapeId}{wxdialogsetescapeid}
+
+
\membersection{wxDialog::GetReturnCode}\label{wxdialoggetreturncode}
\func{int}{GetReturnCode}{\void}
\helpref{wxDialog::SetReturnCode}{wxdialogsetreturncode}, \helpref{wxDialog::ShowModal}{wxdialogshowmodal},\rtfsp
\helpref{wxDialog::EndModal}{wxdialogendmodal}
-\membersection{wxDialog::GetTitle}\label{wxdialoggettitle}
-\constfunc{wxString}{GetTitle}{\void}
+\membersection{wxDialog::GetToolBar}\label{wxdialoggettoolbar}
+
+\constfunc{wxToolBar*}{GetToolBar}{\void}
+
+On PocketPC, a dialog is automatically provided with an empty toolbar. GetToolBar
+allows you to access the toolbar and add tools to it. Removing tools and adding
+arbitrary controls are not currently supported.
+
+This function is not available on any other platform.
-Returns the title of the dialog box.
\membersection{wxDialog::Iconize}\label{wxdialogiconized}
\wxheading{Parameters}
-\docparam{iconize}{If TRUE, iconizes the dialog box; if FALSE, shows and restores it.}
+\docparam{iconize}{If true, iconizes the dialog box; if false, shows and restores it.}
\wxheading{Remarks}
Note that in Windows, iconization has no effect since dialog boxes cannot be
iconized. However, applications may need to explicitly restore dialog
boxes under Motif which have user-iconizable frames, and under Windows
-calling {\tt Iconize(FALSE)} will bring the window to the front, as does
-\rtfsp{\tt Show(TRUE)}.
+calling {\tt Iconize(false)} will bring the window to the front, as does
+\rtfsp{\tt Show(true)}.
+
\membersection{wxDialog::IsIconized}\label{wxdialogisiconized}
\constfunc{bool}{IsIconized}{\void}
-Returns TRUE if the dialog box is iconized. Windows only.
+Returns true if the dialog box is iconized. Windows only.
\wxheading{Remarks}
-Always returns FALSE under Windows since dialogs cannot be iconized.
+Always returns false under Windows since dialogs cannot be iconized.
+
\membersection{wxDialog::IsModal}\label{wxdialogismodal}
\constfunc{bool}{IsModal}{\void}
-Returns TRUE if the dialog box is modal, FALSE otherwise.
-
-\membersection{wxDialog::OnCharHook}\label{wxdialogoncharhook}
+Returns true if the dialog box is modal, false otherwise.
-\func{void}{OnCharHook}{\param{wxKeyEvent\&}{ event}}
-This member is called to allow the window to intercept keyboard events
-before they are processed by child windows.
-For more information, see \helpref{wxWindow::OnCharHook}{wxwindowoncharhook}
-
-\wxheading{Remarks}
+\membersection{wxDialog::OnSysColourChanged}\label{wxdialogonsyscolourchanged}
-wxDialog implements this handler to fake a cancel command if the escape key has been
-pressed. This will dismiss the dialog.
+\func{void}{OnSysColourChanged}{\param{wxSysColourChangedEvent\& }{event}}
-\membersection{wxDialog::OnApply}\label{wxdialogonapply}
+The default handler for wxEVT\_SYS\_COLOUR\_CHANGED.
-\func{void}{OnApply}{\param{wxCommandEvent\& }{event}}
+\wxheading{Parameters}
-The default handler for the wxID\_APPLY identifier.
+\docparam{event}{The colour change event.}
\wxheading{Remarks}
-This function calls \helpref{wxWindow::Validate}{wxwindowvalidate} and \helpref{wxWindow::TransferDataToWindow}{wxwindowtransferdatatowindow}.
+Changes the dialog's colour to conform to the current settings (Windows only).
+Add an event table entry for your dialog class if you wish the behaviour
+to be different (such as keeping a user-defined
+background colour). If you do override this function, call wxEvent::Skip to
+propagate the notification to child windows and controls.
\wxheading{See also}
-\helpref{wxDialog::OnOK}{wxdialogonok}, \helpref{wxDialog::OnCancel}{wxdialogoncancel}
+\helpref{wxSysColourChangedEvent}{wxsyscolourchangedevent}
+
-\membersection{wxDialog::OnCancel}\label{wxdialogoncancel}
+\membersection{wxDialog::SetAffirmativeId}\label{wxdialogsetaffirmativeid}
-\func{void}{OnCancel}{\param{wxCommandEvent\& }{event}}
+\func{void}{SetAffirmativeId}{\param{int }{id}}
-The default handler for the wxID\_CANCEL identifier.
+Sets the identifier to be used as OK button. When the button with this
+identifier is pressed, the dialog calls \helpref{Validate}{wxwindowvalidate}
+and \helpref{wxWindow::TransferDataFromWindow}{wxwindowtransferdatafromwindow}
+and, if they both return \true, closes the dialog with \texttt{wxID\_OK} return
+code.
-\wxheading{Remarks}
+Also, when the user presses a hardware OK button on the devices having one or
+the special OK button in the PocketPC title bar, an event with this id is
+generated.
-The function either calls {\bf EndModal(wxID\_CANCEL)} if the dialog is modal, or
-sets the return value to wxID\_CANCEL and calls {\bf Show(FALSE)} if the dialog is modeless.
+By default, the affirmative id is wxID\_OK.
\wxheading{See also}
-\helpref{wxDialog::OnOK}{wxdialogonok}, \helpref{wxDialog::OnApply}{wxdialogonapply}
-
-\membersection{wxDialog::OnOK}\label{wxdialogonok}
+\helpref{wxDialog::GetAffirmativeId}{wxdialoggetaffirmativeid}, \helpref{wxDialog::SetEscapeId}{wxdialogsetescapeid}
-\func{void}{OnOK}{\param{wxCommandEvent\& }{event}}
-The default handler for the wxID\_OK identifier.
+\membersection{wxDialog::SetEscapeId}\label{wxdialogsetescapeid}
-\wxheading{Remarks}
+\func{void}{SetEscapeId}{\param{int }{id}}
-The function calls
-\rtfsp\helpref{wxWindow::Validate}{wxwindowvalidate}, then \helpref{wxWindow::TransferDataFromWindow}{wxwindowtransferdatafromwindow}.
-If this returns TRUE, the function either calls {\bf EndModal(wxID\_OK)} if the dialog is modal, or
-sets the return value to wxID\_OK and calls {\bf Show(FALSE)} if the dialog is modeless.
+Sets the identifier of the button which should work like the standard
+\texttt{\textsc{Cancel}} button in this dialog. When the button with this id is
+clicked, the dialog is closed. Also, when the user presses \texttt{\textsc{ESC}}
+key in the dialog or closes the dialog using the close button in the title bar,
+this is mapped to the click of the button with the specified id.
-\wxheading{See also}
+By default, the escape id is the special value \texttt{wxID\_ANY} meaning that
+\texttt{wxID\_CANCEL} button is used if it's present in the dialog and
+otherwise the button with \helpref{GetAffirmativeId()}{wxdialoggetaffirmativeid}
+is used. Another special value for \arg{id} is \texttt{wxID\_NONE} meaning that
+\texttt{\textsc{ESC}} presses should be ignored. If any other value is given, it
+is interpreted as the id of the button to map the escape key to.
-\helpref{wxDialog::OnCancel}{wxdialogoncancel}, \helpref{wxDialog::OnApply}{wxdialogonapply}
-\membersection{wxDialog::OnSysColourChanged}\label{wxdialogonsyscolourchanged}
+\membersection{wxDialog::SetIcon}\label{wxdialogseticon}
-\func{void}{OnSysColourChanged}{\param{wxSysColourChangedEvent\& }{event}}
+\func{void}{SetIcon}{\param{const wxIcon\& }{icon}}
-The default handler for wxEVT\_SYS\_COLOUR\_CHANGED.
+Sets the icon for this dialog.
\wxheading{Parameters}
-\docparam{event}{The colour change event.}
+\docparam{icon}{The icon to associate with this dialog.}
-\wxheading{Remarks}
+See also \helpref{wxIcon}{wxicon}.
-Changes the dialog's colour to conform to the current settings (Windows only).
-Add an event table entry for your dialog 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}
+\membersection{wxDialog::SetIcons}\label{wxdialogseticons}
+
+\func{void}{SetIcons}{\param{const wxIconBundle\& }{icons}}
+
+Sets the icons for this dialog.
+
+\wxheading{Parameters}
+
+\docparam{icons}{The icons to associate with this dialog.}
+
+See also \helpref{wxIconBundle}{wxiconbundle}.
-\helpref{wxSysColourChangedEvent}{wxsyscolourchangedevent}
\membersection{wxDialog::SetModal}\label{wxdialogsetmodal}
\func{void}{SetModal}{\param{const bool}{ flag}}
+{\bf NB:} This function is deprecated and doesn't work for all ports, just use
+\helpref{ShowModal}{wxdialogshowmodal} to show a modal dialog instead.
+
Allows the programmer to specify whether the dialog box is modal (wxDialog::Show blocks control
until the dialog is hidden) or modeless (control returns immediately).
\wxheading{Parameters}
-\docparam{flag}{If TRUE, the dialog will be modal, otherwise it will be modeless.}
+\docparam{flag}{If true, the dialog will be modal, otherwise it will be modeless.}
+
\membersection{wxDialog::SetReturnCode}\label{wxdialogsetreturncode}
\helpref{wxDialog::GetReturnCode}{wxdialoggetreturncode}, \helpref{wxDialog::ShowModal}{wxdialogshowmodal},\rtfsp
\helpref{wxDialog::EndModal}{wxdialogendmodal}
-\membersection{wxDialog::SetTitle}\label{wxdialogsettitle}
-
-\func{void}{SetTitle}{\param{const wxString\& }{ title}}
-
-Sets the title of the dialog box.
-
-\wxheading{Parameters}
-
-\docparam{title}{The dialog box title.}
\membersection{wxDialog::Show}\label{wxdialogshow}
\wxheading{Parameters}
-\docparam{show}{If TRUE, the dialog box is shown and brought to the front;
-otherwise the box is hidden. If FALSE and the dialog is
+\docparam{show}{If true, the dialog box is shown and brought to the front;
+otherwise the box is hidden. If false and the dialog is
modal, control is returned to the calling program.}
\wxheading{Remarks}
The preferred way of dismissing a modal dialog is to use \helpref{wxDialog::EndModal}{wxdialogendmodal}.
+
\membersection{wxDialog::ShowModal}\label{wxdialogshowmodal}
\func{int}{ShowModal}{\void}
\helpref{wxDialog:GetReturnCode}{wxdialoggetreturncode},\rtfsp
\helpref{wxDialog::SetReturnCode}{wxdialogsetreturncode}
-
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