interface/busyinfo.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        busyinfo.h
   3 // Purpose:     interface of wxBusyInfo
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxBusyInfo
  11     @wxheader{busyinfo.h}
  12
  13     This class makes it easy to tell your user that the program is temporarily busy.
  14     Just create a wxBusyInfo object on the stack, and within the current scope,
  15     a message window will be shown.
  16
  17     For example:
  18
  19     @code
  20     wxBusyInfo wait("Please wait, working...");
  21
  22         for (int i = 0; i  100000; i++)
  23         {
  24             DoACalculation();
  25         }
  26     @endcode
  27
  28     It works by creating a window in the constructor,
  29     and deleting it in the destructor.
  30
  31     You may also want to call wxTheApp-Yield() to refresh the window
  32     periodically (in case it had been obscured by other windows, for
  33     example) like this:
  34
  35     @code
  36     wxWindowDisabler disableAll;
  37
  38         wxBusyInfo wait("Please wait, working...");
  39
  40         for (int i = 0; i  100000; i++)
  41         {
  42             DoACalculation();
  43
  44             if ( !(i % 1000) )
  45                 wxTheApp-Yield();
  46         }
  47     @endcode
  48
  49     but take care to not cause undesirable reentrancies when doing it (see
  50     wxApp::Yield for more details). The simplest way to do
  51     it is to use wxWindowDisabler class as illustrated
  52     in the above example.
  53
  54     @library{wxcore}
  55     @category{FIXME}
  56 */
  57 class wxBusyInfo
  58 {
  59 public:
  60     /**
  61         Constructs a busy info window as child of @a parent and displays @e msg
  62         in it.
  63         @b NB: If @a parent is not @NULL you must ensure that it is not
  64         closed while the busy info is shown.
  65     */
  66     wxBusyInfo(const wxString& msg, wxWindow* parent = NULL);
  67
  68     /**
  69         Hides and closes the window containing the information text.
  70     */
  71     ~wxBusyInfo();
  72 };
  73