docs/latex/wx/evtblocker.tex

   1 \section{\class{wxEventBlocker}}\label{wxeventblocker}
   2
   3 This class is a special event handler which allows to discard
   4 any event (or a set of event types) directed to a specific window.
   5
   6 Example:
   7
   8 \begin{verbatim}
   9
  10   {
  11     // block all events directed to this window while
  12     // we do the 1000 FuncWhichSendsEvents() calls
  13     wxEventBlocker blocker(this);
  14
  15     for ( int i = 0; i < 1000; i++ )
  16        FuncWhichSendsEvents(i);
  17
  18   } // ~wxEventBlocker called, old event handler is restored
  19
  20   // the event generated by this call will be processed
  21   FuncWhichSendsEvents(0)
  22 \end{verbatim}
  23
  24
  25 \wxheading{Derived from}
  26
  27 \helpref{wxEvtHandler}{wxevthandler}\\
  28 \helpref{wxObject}{wxobject}
  29
  30 \wxheading{Include files}
  31
  32 <wx/event.h>
  33
  34 \wxheading{See also}
  35
  36 \overview{Event handling overview}{eventhandlingoverview},
  37 \helpref{wxEvtHandler}{wxevthandler}
  38
  39
  40 \latexignore{\rtfignore{\wxheading{Members}}}
  41
  42 \membersection{wxEventBlocker::wxEventBlocker}\label{wxeventblockerctor}
  43
  44 \func{}{wxEventBlocker}{\param{wxWindow* }{win}, \param{wxEventType}{type = wxEVT\_ANY}}
  45
  46 Constructs the blocker for the given window and for the given event type.
  47 If \arg{type} is \texttt{wxEVT\_ANY}, then all events for that window are
  48 blocked. You can call \helpref{Block}{wxeventblockerblock} after creation to
  49 add other event types to the list of events to block.
  50
  51 Note that the \arg{win} window \textbf{must} remain alive until the
  52 wxEventBlocker object destruction.
  53
  54
  55 \membersection{wxEventBlocker::\destruct{wxEventBlocker}}\label{wxeventblockerdtor}
  56
  57 \func{}{\destruct{wxEventBlocker}}{\void}
  58
  59 Destructor. The blocker will remove itself from the chain of event handlers for
  60 the window provided in the constructor, thus restoring normal processing of
  61 events.
  62
  63
  64 \membersection{wxEventBlocker::Block}\label{wxeventblockerblock}
  65
  66 \func{void}{Block}{\param{wxEventType }{eventType}}
  67
  68 Adds to the list of event types which should be blocked the given \arg{eventType}.
  69