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the app doesn't exit any more if a dialog is shown (and destroyed) while

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the flow of control is still in OnInit()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@16523 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin
2002-08-15 20:42:07 +00:00
parent 62b77e42be
commit 1cbee0b42c
10 changed files with 134 additions and 89 deletions
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8
docs/latex/wx/app.tex
View File

@@ -137,7 +137,8 @@ otherwise.
\wxheading{See also}
\helpref{wxApp::SetExitOnFrameDelete}{wxappsetexitonframedelete}
\helpref{wxApp::SetExitOnFrameDelete}{wxappsetexitonframedelete},\\
\helpref{wxApp shutdown overview}{wxappshutdownoverview}
\membersection{wxApp::GetTopWindow}\label{wxappgettopwindow}
@@ -550,6 +551,11 @@ top-level frame is deleted.
\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}
\func{void}{SetTopWindow}{\param{wxWindow* }{window}}

25
docs/latex/wx/tapp.tex
View File

@@ -22,7 +22,8 @@ is to explicitly delete child frames in the top-level frame's \helpref{wxCloseEv
handler.
In emergencies the \helpref{wxExit}{wxexit} function can be called to kill the
application.
application however normally the applications shuts down automatically,
\helpref{see below}{wxappshutdownoverview}.
An example of defining an application follows:
@@ -55,11 +56,25 @@ construction time.
You can also use DECLARE\_APP(appClass) in a header file to declare the wxGetApp function which returns
a reference to the application object.
\subsection{Application shutdown}
\subsection{Application shutdown}\label{wxappshutdownoverview}
\helpref{OnExit}{wxapponexit} is called when the application exits but {\it before}
wxWindows cleans its internal structures. Your should delete all wxWindows object that
your created by the time OnExit finishes. In particular, do {\bf not} destroy them
The application normally shuts down when the last of its top level windows is
closed. This is normally the expected behaviour and means that it is enough to
call \helpref{Close()}{wxwindowclose} in response to the {\tt "Exit"} menu
command if your program has a single top level window. If this behaviour is not
desirable \helpref{wxApp::SetExitOnFrameDelete}{wxappsetexitonframedelete} can
be called to change it. Note that starting from wxWindows 2.3.3 such logic
doesn't apply for the windows shown before the program enters the main loop: in
other words, you can safely show a dialog from
\helpref{wxApp::OnInit}{wxapponinit} and not be afraid that your application
terminates when this dialog -- which is the last top level window for the
moment -- is closed.
Another aspect of the application shutdown is the \helpref{OnExit}{wxapponexit}
which is called when the application exits but {\it before} wxWindows cleans up
its internal structures. Your should delete all wxWindows object that your
created by the time OnExit finishes. In particular, do {\bf not} destroy them
from application class' destructor!
For example, this code may crash: