X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/2edb0bdef6238c8c246b6978bc14828b7033d931..f973828cd9b31d3b80386fab5e6f7c4a106d97fc:/docs/latex/wx/app.tex diff --git a/docs/latex/wx/app.tex b/docs/latex/wx/app.tex index fb6340665d..d02fd5a8cb 100644 --- a/docs/latex/wx/app.tex +++ b/docs/latex/wx/app.tex @@ -32,12 +32,14 @@ a reference to your application object) to be visible to other files. \latexignore{\rtfignore{\wxheading{Members}}} + \membersection{wxApp::wxApp} \func{void}{wxApp}{\void} Constructor. Called implicitly with a definition of a wxApp object. + \membersection{wxApp::\destruct{wxApp}} \func{void}{\destruct{wxApp}}{\void} @@ -45,18 +47,21 @@ Constructor. Called implicitly with a definition of a wxApp object. Destructor. Will be called implicitly on program exit if the wxApp object is created on the stack. + \membersection{wxApp::argc}\label{wxappargc} \member{int}{argc} Number of command line arguments (after environment-specific processing). + \membersection{wxApp::argv}\label{wxappargv} \member{char **}{argv} Command line arguments (after environment-specific processing). + \membersection{wxApp::CreateLogTarget}\label{wxappcreatelogtarget} \func{virtual wxLog*}{CreateLogTarget}{\void} @@ -68,6 +73,7 @@ implementation returns a new wxLogGui class. \helpref{wxLog}{wxlog} + \membersection{wxApp::Dispatch}\label{wxappdispatch} \func{void}{Dispatch}{\void} @@ -85,17 +91,19 @@ This can be used for programming event loops, e.g. \helpref{wxApp::Pending}{wxapppending} + \membersection{wxApp::FilterEvent}\label{wxappfilterevent} \func{int}{FilterEvent}{\param{wxEvent\& }{event}} This function is called before processing any event and allows the application to preempt the processing of some events. If this method returns $-1$ the event -is processed normally, otherwise either {\tt TRUE} or {\tt FALSE} should be +is processed normally, otherwise either {\tt true} or {\tt false} should be returned and the event processing stops immediately considering that the event had been already processed (for the former return value) or that it is not going to be processed at all (for the latter one). + \membersection{wxApp::GetAppName}\label{wxappgetappname} \constfunc{wxString}{GetAppName}{\void} @@ -107,16 +115,18 @@ Returns the application name. wxWindows sets this to a reasonable default before calling \helpref{wxApp::OnInit}{wxapponinit}, but the application can reset it at will. + \membersection{wxApp::GetAuto3D}\label{wxappgetauto3d} \constfunc{bool}{GetAuto3D}{\void} -Returns TRUE if 3D control mode is on, FALSE otherwise. +Returns true if 3D control mode is on, false otherwise. \wxheading{See also} \helpref{wxApp::SetAuto3D}{wxappsetauto3d} + \membersection{wxApp::GetClassName}\label{wxappgetclassname} \constfunc{wxString}{GetClassName}{\void} @@ -128,16 +138,19 @@ manner to refer to the application. \helpref{wxApp::SetClassName}{wxappsetclassname} + \membersection{wxApp::GetExitOnFrameDelete}\label{wxappgetexitonframedelete} -\constfunc{bool}{GetExitFrameOnDelete}{\void} +\constfunc{bool}{GetExitOnFrameDelete}{\void} -Returns TRUE if the application will exit when the top-level window is deleted, FALSE +Returns true if the application will exit when the top-level window is deleted, false otherwise. \wxheading{See also} -\helpref{wxApp::SetExitOnFrameDelete}{wxappsetexitonframedelete} +\helpref{wxApp::SetExitOnFrameDelete}{wxappsetexitonframedelete},\\ +\helpref{wxApp shutdown overview}{wxappshutdownoverview} + \membersection{wxApp::GetTopWindow}\label{wxappgettopwindow} @@ -154,23 +167,26 @@ function will find the first top-level window (frame or dialog) and return that. \helpref{SetTopWindow}{wxappsettopwindow} + \membersection{wxApp::GetUseBestVisual}\label{wxappgetusebestvisual} \constfunc{bool}{GetUseBestVisual}{\void} -Returns TRUE if the application will use the best visual on systems that support -different visuals, FALSE otherwise. +Returns true if the application will use the best visual on systems that support +different visuals, false otherwise. \wxheading{See also} \helpref{SetUseBestVisual}{wxappsetusebestvisual} + \membersection{wxApp::GetVendorName}\label{wxappgetvendorname} \constfunc{wxString}{GetVendorName}{\void} Returns the application's vendor name. + \membersection{wxApp::ExitMainLoop}\label{wxappexitmainloop} \func{void}{ExitMainLoop}{\void} @@ -179,15 +195,6 @@ Call this to explicitly exit the main message (event) loop. You should normally exit the main loop (and the application) by deleting the top window. -\membersection{wxApp::Initialized}\label{wxappinitialized} - -\func{bool}{Initialized}{\void} - -Returns TRUE if the application has been initialized (i.e. if\rtfsp -\helpref{wxApp::OnInit}{wxapponinit} has returned successfully). This can be useful for error -message routines to determine which method of output is best for the -current state of the program (some windowing systems may not like -dialogs to pop up before the main loop has been entered). \membersection{wxApp::MainLoop}\label{wxappmainloop} @@ -236,12 +243,13 @@ Returns 0 under X, and the wParam of the WM\_QUIT message under Windows. %%\helpref{wxKeyEvent}{wxkeyevent}, \helpref{wxWindow::OnChar}{wxwindowonchar},\rtfsp %%\helpref{wxWindow::OnCharHook}{wxwindowoncharhook}, \helpref{wxDialog::OnCharHook}{wxdialogoncharhook} + \membersection{wxApp::OnAssert}\label{wxapponassert} -\func{void}{OnAssert}{\param{const wxChar }{*file}, \param{int }{line}, \param{const wxChar }{*msg}} +\func{void}{OnAssert}{\param{const wxChar }{*file}, \param{int }{line}, \param{const wxChar }{*cond}, \param{const wxChar }{*msg}} This function is called when an assert failure occurs, i.e. the condition -specified in \helpref{wxASSERT}{wxassert} macro evaluated to {\tt FALSE}. +specified in \helpref{wxASSERT}{wxassert} macro evaluated to {\tt false}. It is only called in debug mode (when {\tt \_\_WXDEBUG\_\_} is defined) as asserts are not left in the release code at all. @@ -254,17 +262,13 @@ the user to stop the program, continue or ignore all subsequent asserts. \docparam{line}{the line number in this file where the assert occured} +\docparam{cond}{the condition of the failed assert in string form} + \docparam{msg}{the message specified as argument to \helpref{wxASSERT\_MSG}{wxassertmsg} or \helpref{wxFAIL\_MSG}{wxfailmsg}, will be {\tt NULL} if just \helpref{wxASSERT}{wxassert} or \helpref{wxFAIL}{wxfail} was used} -\membersection{wxApp::OnExit}\label{wxapponexit} - -\func{int}{OnExit}{\void} - -Provide this member function for any processing which needs to be done as -the application is about to exit. \membersection{wxApp::OnCmdLineError}\label{wxapponcmdlineerror} @@ -274,13 +278,14 @@ Called when command line parsing fails (i.e. an incorrect command line option was specified by the user). The default behaviour is to show the program usage text and abort the program. -Return {\tt TRUE} to continue normal execution or {\tt FALSE} to return -{\tt FALSE} from \helpref{OnInit}{wxapponinit} thus terminating the program. +Return {\tt true} to continue normal execution or {\tt false} to return +{\tt false} from \helpref{OnInit}{wxapponinit} thus terminating the program. \wxheading{See also} \helpref{OnInitCmdLine}{wxapponinitcmdline} + \membersection{wxApp::OnCmdLineHelp}\label{wxapponcmdlinehelp} \func{bool}{OnCmdLineHelp}{\param{wxCmdLineParser\& }{parser}} @@ -288,13 +293,14 @@ Return {\tt TRUE} to continue normal execution or {\tt FALSE} to return Called when the help option ({\tt --help}) was specified on the command line. The default behaviour is to show the program usage text and abort the program. -Return {\tt TRUE} to continue normal execution or {\tt FALSE} to return -{\tt FALSE} from \helpref{OnInit}{wxapponinit} thus terminating the program. +Return {\tt true} to continue normal execution or {\tt false} to return +{\tt false} from \helpref{OnInit}{wxapponinit} thus terminating the program. \wxheading{See also} \helpref{OnInitCmdLine}{wxapponinitcmdline} + \membersection{wxApp::OnCmdLineParsed}\label{wxapponcmdlineparsed} \func{bool}{OnCmdLineParsed}{\param{wxCmdLineParser\& }{parser}} @@ -306,13 +312,28 @@ set from the command line. Don't forget to call the base class version unless you want to suppress processing of the standard command line options. -Return {\tt TRUE} to continue normal execution or {\tt FALSE} to return -{\tt FALSE} from \helpref{OnInit}{wxapponinit} thus terminating the program. +Return {\tt true} to continue normal execution or {\tt false} to return +{\tt false} from \helpref{OnInit}{wxapponinit} thus terminating the program. \wxheading{See also} \helpref{OnInitCmdLine}{wxapponinitcmdline} + +\membersection{wxApp::OnExit}\label{wxapponexit} + +\func{virtual int}{OnExit}{\void} + +Override this member function for any processing which needs to be +done as the application is about to exit. OnExit is called after +destroying all application windows and controls, but before +wxWindows cleanup. Note that it is not called at all if +\helpref{OnInit}{wxapponinit} failed. + +The return value of this function is currently ignored, return the same value +as returned by the base class method if you override it. + + \membersection{wxApp::OnFatalException}\label{wxapponfatalexception} \func{void}{OnFatalException}{\void} @@ -328,7 +349,7 @@ work and, in fact, probably won't. \wxheading{See also} -\helpref{wxHandleFatalExcetions}{wxhandlefatalexceptions} +\helpref{wxHandleFatalExceptions}{wxhandlefatalexceptions} %% VZ: the wxApp event handler are private and should not be documented here! %% @@ -365,7 +386,7 @@ work and, in fact, probably won't. %% %%Use the EVT\_END\_SESSION event table macro to handle query end session events. %% -%%The default handler calls \helpref{wxWindow::Close}{wxwindowclose} with a TRUE argument +%%The default handler calls \helpref{wxWindow::Close}{wxwindowclose} with a true argument %%(forcing the application to close itself silently). %% %%\wxheading{Remarks} @@ -381,19 +402,24 @@ work and, in fact, probably won't. %%\helpref{wxCloseEvent}{wxcloseevent},\rtfsp %%\helpref{wxApp::OnQueryEndSession}{wxapponqueryendsession} + \membersection{wxApp::OnInit}\label{wxapponinit} \func{bool}{OnInit}{\void} This must be provided by the application, and will usually create the application's main window, optionally calling -\helpref{wxApp::SetTopWindow}{wxappsettopwindow}. +\helpref{wxApp::SetTopWindow}{wxappsettopwindow}. You may use +\helpref{OnExit}{wxapponexit} to clean up anything initialized here, provided +that the function returns \true. Notice that if you want to to use the command line processing provided by wxWindows you have to call the base class version in the derived class OnInit(). -Return TRUE to continue processing, FALSE to exit the application. +Return \true to continue processing, \false to exit the application +immediately. + \membersection{wxApp::OnInitCmdLine}\label{wxapponinitcmdline} @@ -403,6 +429,7 @@ Called from \helpref{OnInit}{wxapponinit} and may be used to initialize the parser with the command line options for this application. The base class versions adds support for a few standard options only. + \membersection{wxApp::OnQueryEndSession}\label{wxapponqueryendsession} \func{void}{OnQueryEndSession}{\param{wxCloseEvent\& }{event}} @@ -411,7 +438,7 @@ This is an event handler function called when the operating system or GUI sessio about to close down. Typically, an application will try to save unsaved documents at this point. -If \helpref{wxCloseEvent::CanVeto}{wxcloseeventcanveto} returns TRUE, the application +If \helpref{wxCloseEvent::CanVeto}{wxcloseeventcanveto} returns true, the application is allowed to veto the shutdown by calling \helpref{wxCloseEvent::Veto}{wxcloseeventveto}. The application might veto the shutdown after prompting for documents to be saved, and the user has cancelled the save. @@ -419,12 +446,12 @@ user has cancelled the save. Use the EVT\_QUERY\_END\_SESSION event table macro to handle query end session events. You should check whether the application is forcing the deletion of the window -using \helpref{wxCloseEvent::GetForce}{wxcloseeventgetforce}. If this is TRUE, +using \helpref{wxCloseEvent::GetForce}{wxcloseeventgetforce}. If this is true, destroy the window using \helpref{wxWindow::Destroy}{wxwindowdestroy}. If not, it is up to you whether you respond by destroying the window. The default handler calls \helpref{wxWindow::Close}{wxwindowclose} on the top-level window, -and vetoes the shutdown if Close returns FALSE. This will be sufficient for many applications. +and vetoes the shutdown if Close returns false. This will be sufficient for many applications. \wxheading{Remarks} @@ -435,9 +462,36 @@ Under Windows, OnQueryEndSession is called in response to the WM\_QUERYENDSESSIO \wxheading{See also} \helpref{wxWindow::Close}{wxwindowclose},\rtfsp -\helpref{wxCloseEvent}{wxcloseevent} -%% GD: OnXXX functions are not documented -%%\helpref{wxApp::OnEndSession}{wxapponendsession} +\helpref{wxCloseEvent}{wxcloseevent}\rtfsp + + +\membersection{wxApp::OnRun}\label{wxapponrun} + +\func{virtual int}{OnRun}{\void} + +This virtual function is where the execution of a program written in wxWindows +starts. The default implementation just enters the main loop and starts +handling the events until it terminates, either because +\helpref{ExitMainLoop}{wxappexitmainloop} has been explicitly called or because +the last frame has been deleted and +\helpref{GetExitOnFrameDelete}{wxappgetexitonframedelete} flag is \true (this +is the default). + +The return value of this function becomes the exit code of the program, so it +should return $0$ in case of successful termination. + + +\membersection{wxApp::OnUnhandledException}\label{wxapponunhandledexception} + +\func{virtual void}{OnUnhandledException}{\void} + +This function is called when an unhandled C++ exception occurs inside +\helpref{OnRun()}{wxapponrun} (the exceptions which occur during the program +startup and shutdown might not be caught at all). +Note that the exception type is lost by now, so if you want to really handle +the exception you should override \helpref{OnRun()}{wxapponrun} and put a +try/catch clause around the call to the base class version there. + \membersection{wxApp::ProcessMessage}\label{wxappprocessmessage} @@ -445,8 +499,8 @@ Under Windows, OnQueryEndSession is called in response to the WM\_QUERYENDSESSIO Windows-only function for processing a message. This function is called from the main message loop, checking for windows that -may wish to process it. The function returns TRUE if the message -was processed, FALSE otherwise. If you use wxWindows with another class +may wish to process it. The function returns true if the message +was processed, false otherwise. If you use wxWindows with another class library with its own message loop, you should make sure that this function is called to allow wxWindows to receive messages. For example, to allow co-existence with the Microsoft Foundation Classes, override @@ -457,43 +511,43 @@ the PreTranslateMessage function: BOOL CTheApp::PreTranslateMessage(MSG *msg) { if (wxTheApp && wxTheApp->ProcessMessage((WXMSW *)msg)) - return TRUE; + return true; else return CWinApp::PreTranslateMessage(msg); } \end{verbatim} + \membersection{wxApp::Pending}\label{wxapppending} \func{bool}{Pending}{\void} -Returns TRUE if unprocessed events are in the window system event queue. +Returns true if unprocessed events are in the window system event queue. \wxheading{See also} \helpref{wxApp::Dispatch}{wxappdispatch} -\membersection{wxApp::SendIdleEvents}\label{wxappsendidleevents} - -\func{bool}{SendIdleEvents}{\void} -Sends idle events to all top-level windows. +\membersection{wxApp::SendIdleEvents}\label{wxappsendidleevents} -\func{bool}{SendIdleEvents}{\param{wxWindow*}{ win}} +\func{bool}{SendIdleEvents}{\param{wxWindow*}{ win}, \param{wxIdleEvent\& }{event}} Sends idle events to a window and its children. +Please note that this function is internal to wxWindows and shouldn't be used +by user code. + \wxheading{Remarks} These functions poll the top-level windows, and their children, for idle event processing. -If TRUE is returned, more OnIdle processing is requested by one or more window. +If true is returned, more OnIdle processing is requested by one or more window. \wxheading{See also} -%% GD: OnXXX functions are not documented -%%\helpref{wxApp::OnIdle}{wxapponidle} \helpref{wxIdleEvent}{wxidleevent} + \membersection{wxApp::SetAppName}\label{wxappsetappname} \func{void}{SetAppName}{\param{const wxString\& }{name}} @@ -506,6 +560,7 @@ wxWindows. \helpref{wxApp::GetAppName}{wxappgetappname} + \membersection{wxApp::SetAuto3D}\label{wxappsetauto3d} \func{void}{SetAuto3D}{\param{const bool}{ auto3D}} @@ -514,8 +569,8 @@ Switches automatic 3D controls on or off. \wxheading{Parameters} -\docparam{auto3D}{If TRUE, all controls will be created with 3D appearances unless -overridden for a control or dialog. The default is TRUE} +\docparam{auto3D}{If true, all controls will be created with 3D appearances unless +overridden for a control or dialog. The default is true} \wxheading{Remarks} @@ -525,6 +580,7 @@ This has an effect on Windows only. \helpref{wxApp::GetAuto3D}{wxappgetauto3d} + \membersection{wxApp::SetClassName}\label{wxappsetclassname} \func{void}{SetClassName}{\param{const wxString\& }{name}} @@ -536,6 +592,7 @@ manner to refer to the application. \helpref{wxApp::GetClassName}{wxappgetclassname} + \membersection{wxApp::SetExitOnFrameDelete}\label{wxappsetexitonframedelete} \func{void}{SetExitOnFrameDelete}{\param{bool}{ flag}} @@ -545,8 +602,14 @@ top-level frame is deleted. \wxheading{Parameters} -\docparam{flag}{If TRUE (the default), the application will exit when the top-level frame is -deleted. If FALSE, the application will continue to run.} +\docparam{flag}{If true (the default), the application will exit when the top-level frame is +deleted. If false, the application will continue to run.} + +\wxheading{See also} + +\helpref{wxApp::GetExitOnFrameDelete}{wxappgetexitonframedelete},\\ +\helpref{wxApp shutdown overview}{wxappshutdownoverview} + \membersection{wxApp::SetTopWindow}\label{wxappsettopwindow} @@ -568,6 +631,7 @@ needs to use the top window. \helpref{wxApp::GetTopWindow}{wxappgettopwindow}, \helpref{wxApp::OnInit}{wxapponinit} + \membersection{wxApp::SetVendorName}\label{wxappsetvendorname} \func{void}{SetVendorName}{\param{const wxString\& }{name}} @@ -580,6 +644,7 @@ wxWindows. \helpref{wxApp::GetVendorName}{wxappgetvendorname} + \membersection{wxApp::SetUseBestVisual}\label{wxappsetusebestvisual} \func{void}{SetUseBestVisual}{\param{bool}{ flag}} @@ -596,11 +661,23 @@ This function currently only has effect under GTK. \wxheading{Parameters} -\docparam{flag}{If TRUE, the app will use the best visual.} +\docparam{flag}{If true, the app will use the best visual.} + + +\membersection{wxApp::HandleEvent}\label{wxapphandleevent} + +\constfunc{virtual void}{HandleEvent}{\param{wxEvtHandler}{ *handler}, \param{wxEventFunction}{ func}, \param{wxEvent\& }{event}} + +This function simply invokes the given method \arg{func} of the specified +event handler \arg{handler} with the \arg{event} as parameter. It exists solely +to allow to catch the C++ exceptions which could be thrown by all event +handlers in the application in one place: if you want to do this, override this +function in your wxApp-derived class and add try/catch clause(s) to it. + \membersection{wxApp::Yield}\label{wxappyield} -\func{bool}{Yield}{\param{bool}{ onlyIfNeeded = FALSE}} +\func{bool}{Yield}{\param{bool}{ onlyIfNeeded = false}} Yields control to pending messages in the windowing system. This can be useful, for example, when a time-consuming process writes to a text window. Without an occasional @@ -621,6 +698,6 @@ iteration), call \helpref{wxLog::FlushActive}{wxlogflushactive}. Calling Yield() recursively is normally an error and an assert failure is raised in debug build if such situation is detected. However if the the -{\it onlyIfNeeded} parameter is {\tt TRUE}, the method will just silently -return {\tt FALSE} instead. +{\it onlyIfNeeded} parameter is {\tt true}, the method will just silently +return {\tt false} instead.