db66e0652c
'DEBIAN_2_2_8_1'. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/tags/DEBIAN_2_2_8_1@12644 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
68 lines
2.0 KiB
TeX
68 lines
2.0 KiB
TeX
\section{\class{wxNotifyEvent}}\label{wxnotifyevent}
|
|
|
|
This class is not used by the event handlers by itself, but is a base class
|
|
for other event classes (such as \helpref{wxNotebookEvent}{wxnotebookevent}).
|
|
|
|
It (or an object of a derived class) is sent when the controls state is being
|
|
changed and allows the program to \helpref{Veto()}{wxnotifyeventveto} this
|
|
change if it wants to prevent it from happening.
|
|
|
|
In some rare cases (so far only dragging the items in the tree control) the
|
|
event is disabled by default in which case
|
|
\helpref{Allow()}{wxnotifyeventallow} may be called to allow it.
|
|
|
|
If both \helpref{Allow()}{wxnotifyeventallow} and
|
|
\helpref{Veto()}{wxnotifyeventveto} are called, only the last method called
|
|
counts.
|
|
|
|
\wxheading{Derived from}
|
|
|
|
\helpref{wxCommandEvent}{wxcommandevent}\\
|
|
\helpref{wxEvent}{wxevent}\\
|
|
\helpref{wxEvtHandler}{wxevthandler}\\
|
|
\helpref{wxObject}{wxobject}
|
|
|
|
\wxheading{Include files}
|
|
|
|
<wx/event.h>
|
|
|
|
\wxheading{Event table macros}
|
|
|
|
None
|
|
|
|
\wxheading{See also}
|
|
|
|
\helpref{wxNotebookEvent}{wxnotebookevent}
|
|
|
|
\latexignore{\rtfignore{\wxheading{Members}}}
|
|
|
|
\membersection{wxNotifyEvent::wxNotifyEvent}\label{wxnotifyeventconstr}
|
|
|
|
\func{}{wxNotifyEvent}{\param{wxEventType}{ eventType = wxEVT\_NULL}, \param{int}{ id = 0}}
|
|
|
|
Constructor (used internally by wxWindows only).
|
|
|
|
\membersection{wxNotifyEvent::Allow}\label{wxnotifyeventallow}
|
|
|
|
\func{void}{Allow}{\param{bool }{allow = TRUE}}
|
|
|
|
Allow the action signalled by this event to be carried.
|
|
|
|
\membersection{wxNotifyEvent::IsAllowed}\label{wxnotifyeventisallowed}
|
|
|
|
\constfunc{bool}{IsAllowed}{\void}
|
|
|
|
Returns TRUE if the change is allowed (\helpref{Veto()}{wxnotifyeventveto}
|
|
hasn't been called) or FALSE otherwise (if it was).
|
|
|
|
\membersection{wxNotifyEvent::Veto}\label{wxnotifyeventveto}
|
|
|
|
\func{void}{Veto}{\void}
|
|
|
|
Prevents the change announced by this event from happening.
|
|
|
|
It is in general a good idea to notify the user about the reasons for vetoing
|
|
the change because otherwise the applications behaviour (which just refuses to
|
|
do what the user wants) might be quite surprising.
|
|
|