X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2edb0bdef6238c8c246b6978bc14828b7033d931..56601ff2db94ccc874107eb60c4564ceb47f6d02:/docs/latex/wx/dialog.tex diff --git a/docs/latex/wx/dialog.tex b/docs/latex/wx/dialog.tex index 7084957d80..31818d2c9b 100644 --- a/docs/latex/wx/dialog.tex +++ b/docs/latex/wx/dialog.tex @@ -1,11 +1,41 @@ +%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% +%% 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} @@ -14,44 +44,77 @@ the screen. It can contain controls and other windows. -\wxheading{Remarks} +\wxheading{Library} + +\helpref{wxCore}{librarieslist} + +\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} -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. +works, you can also achieve the same result by using a simpler code fragment +below: -A dialog may be loaded from a wxWindows resource file (extension {\tt wxr}), which may itself -be created by Dialog Editor. For details, -see \helpref{The wxWindows resource system}{resourceformats}, \helpref{wxWindows resource functions}{resourcefuncs} and -the resource sample. +\begin{verbatim} + void AskUser() + { + MyAskDialog dlg(...); + if ( dlg.ShowModal() == wxID_OK ) + ... -An application can define an \helpref{wxCloseEvent}{wxcloseevent} handler for the -dialog to respond to system close events. + // 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{wxDIALOG\_MODAL}}{Specifies that the dialog box will be modal.} \twocolitem{\windowstyle{wxCAPTION}}{Puts a caption on the dialog box.} -\twocolitem{\windowstyle{wxDEFAULT\_DIALOG\_STYLE}}{Equivalent to a combination of wxCAPTION, wxSYSTEM\_MENU and wxTHICK\_FRAME} +\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, the dialogs created -with {\tt NULL} parent window will be given the -\helpref{applications top level window}{wxappgettopwindow} as parent. Use this -style to prevent this from happening and create a really orphan dialog (note -that this is not recommended for modal dialogs).} +\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 wxWindows will send -a wxEVT\_HELP event if the user clicked on an application window. {\it Note} that this is an extended +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 @@ -62,12 +125,13 @@ 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} @@ -91,10 +155,10 @@ Constructor. \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}.} @@ -106,12 +170,14 @@ individual dialog boxes.} \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}} @@ -122,6 +188,7 @@ Centres the dialog box on the display. \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 @@ -131,9 +198,60 @@ Centres the dialog box on the display. \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}} @@ -151,6 +269,31 @@ invocation. \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} @@ -167,127 +310,117 @@ a code to the application. \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} -\func{void}{Iconize}{\param{const bool}{ iconize}} +\func{void}{Iconize}{\param{bool}{ iconize}} Iconizes or restores the dialog. Windows only. \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} - -\membersection{wxDialog::OnCancel}\label{wxdialogoncancel} - -\func{void}{OnCancel}{\param{wxCommandEvent\& }{event}} - -The default handler for the wxID\_CANCEL identifier. - -\wxheading{Remarks} - -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. - -\wxheading{See also} +\helpref{wxSysColourChangedEvent}{wxsyscolourchangedevent} -\helpref{wxDialog::OnOK}{wxdialogonok}, \helpref{wxDialog::OnApply}{wxdialogonapply} -\membersection{wxDialog::OnOK}\label{wxdialogonok} +\membersection{wxDialog::SetAffirmativeId}\label{wxdialogsetaffirmativeid} -\func{void}{OnOK}{\param{wxCommandEvent\& }{event}} +\func{void}{SetAffirmativeId}{\param{int }{id}} -The default handler for the wxID\_OK 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 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. +By default, the affirmative id is wxID\_OK. \wxheading{See also} -\helpref{wxDialog::OnCancel}{wxdialogoncancel}, \helpref{wxDialog::OnApply}{wxdialogonapply} +\helpref{wxDialog::GetAffirmativeId}{wxdialoggetaffirmativeid}, \helpref{wxDialog::SetEscapeId}{wxdialogsetescapeid} -\membersection{wxDialog::OnSysColourChanged}\label{wxdialogonsyscolourchanged} -\func{void}{OnSysColourChanged}{\param{wxSysColourChangedEvent\& }{event}} +\membersection{wxDialog::SetEscapeId}\label{wxdialogsetescapeid} -The default handler for wxEVT\_SYS\_COLOUR\_CHANGED. - -\wxheading{Parameters} +\func{void}{SetEscapeId}{\param{int }{id}} -\docparam{event}{The colour change event.} +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{Remarks} +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. -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{wxSysColourChangedEvent}{wxsyscolourchangedevent} \membersection{wxDialog::SetIcon}\label{wxdialogseticon} @@ -301,6 +434,7 @@ Sets the icon for this dialog. See also \helpref{wxIcon}{wxicon}. + \membersection{wxDialog::SetIcons}\label{wxdialogseticons} \func{void}{SetIcons}{\param{const wxIconBundle\& }{icons}} @@ -313,11 +447,12 @@ Sets the icons for this dialog. See also \helpref{wxIconBundle}{wxiconbundle}. + \membersection{wxDialog::SetModal}\label{wxdialogsetmodal} -\func{void}{SetModal}{\param{const bool}{ flag}} +\func{void}{SetModal}{\param{bool}{ flag}} -{\bf NB:} This function is deprecated and doesn't work for all ports, just use +{\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 @@ -325,7 +460,8 @@ 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} @@ -347,32 +483,24 @@ a code to the application. The function \helpref{wxDialog::EndModal}{wxdialogend \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} -\func{bool}{Show}{\param{const bool}{ show}} +\func{bool}{Show}{\param{bool}{ show}} Hides or shows the dialog. \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}