Fixes the problem with VARCHAR fields not allowing the stored string to ever be lengt...

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

diff --git a/docs/latex/wx/tdelwin.tex b/docs/latex/wx/tdelwin.tex
index 4600573cd4af2ca65e5e8f84e3bec54dbc707981..d425e42ae424d0084eb2112dfd7d00dadcb601a6 100644 (file)
--- a/docs/latex/wx/tdelwin.tex
+++ b/docs/latex/wx/tdelwin.tex
@@ -3,21 +3,21 @@
 Classes: \helpref{wxCloseEvent}{wxcloseevent}, \helpref{wxWindow}{wxwindow}
 
 Window deletion can be a confusing subject, so this overview is provided
-to make it clear when and how you delete windows, or respond to user requests
+to help make it clear when and how you delete windows, or respond to user requests
 to close windows.
 
 \wxheading{What is the sequence of events in a window deletion?}
 
 When the user clicks on the system close button or system close command,
 in a frame or a dialog, wxWindows calls \helpref{wxWindow::Close}{wxwindowclose}. This
-in turn generates an EVT\_CLOSE event: see \helpref{wxWindow::OnCloseWindow}{wxwindowonclosewindow}.
+in turn generates an EVT\_CLOSE event: see \helpref{wxCloseEvent}{wxcloseevent}.
 
 It is the duty of the application to define a suitable event handler, and
 decide whether or not to destroy the window.
 If the application is for some reason forcing the application to close
 (\helpref{wxCloseEvent::CanVeto}{wxcloseeventcanveto} returns FALSE), the window should always be destroyed, otherwise there is the option to
 ignore the request, or maybe wait until the user has answered a question
-before deciding whether it's safe to close. The handler for EVT\_CLOSE should
+before deciding whether it is safe to close. The handler for EVT\_CLOSE should
 signal to the calling code if it does not destroy the window, by calling 
 \helpref{wxCloseEvent::Veto}{wxcloseeventveto}. Calling this provides useful information
 to the calling code.
@@ -27,6 +27,10 @@ delete the window, and not use the {\bf delete} operator. This is because
 for some window classes, wxWindows delays actual deletion of the window until all events have been processed,
 since otherwise there is the danger that events will be sent to a non-existent window.
 
+As reinforced in the next section, calling Close does not guarantee that the window
+will be destroyed. Call \helpref{wxWindow::Destroy}{wxwindowdestroy} if you want to be
+certain that the window is destroyed.
+
 \wxheading{How can the application close a window itself?}
 
 Your application can either use \helpref{wxWindow::Close}{wxwindowclose} event just as
@@ -45,13 +49,13 @@ The default close event handler for wxDialog simulates a Cancel command,
 generating a wxID\_CANCEL event. Since the handler for this cancel event might
 itself call {\bf Close}, there is a check for infinite looping. The default handler
 for wxID\_CANCEL hides the dialog (if modeless) or calls EndModal(wxID\_CANCEL) (if modal).
-In other words, by default, the dialog is not destroyed (it might have been created
+In other words, by default, the dialog {\it is not destroyed} (it might have been created
 on the stack, so the assumption of dynamic creation cannot be made).
 
 The default close event handler for wxFrame destroys the frame using Destroy().
-
-Under Windows, wxDialog defines a handler for \helpref{wxWindow::OnCharHook}{wxwindowoncharhook} that
-generates a Cancel event if the Escape key has been pressed.
+%
+%Under Windows, wxDialog defines a handler for \helpref{wxWindow::OnCharHook}{wxwindowoncharhook} that
+%generates a Cancel event if the Escape key has been pressed.
 
 \wxheading{What should I do when the user calls up Exit from a menu?}
 
@@ -66,7 +70,7 @@ the exit command altogether.
 
 \wxheading{What should I do to upgrade my 1.xx OnClose to 2.0?}
 
-In wxWindows 1.xx, the {\bf OnClose} function did not actually delete 'this', but signalled
+In wxWindows 1.xx, the {\bf OnClose} function did not actually delete 'this', but signaled
 to the calling function (either {\bf Close}, or the wxWindows framework) to delete
 or not delete the window.