interface/wx/tipdlg.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        tipdlg.h
   3 // Purpose:     interface of wxTipProvider
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxTipProvider
  11
  12     This is the class used together with wxShowTip() function.
  13     It must implement wxTipProvider::GetTip function and return the
  14     current tip from it (different tip each time it is called).
  15
  16     You will never use this class yourself, but you need it to show startup tips
  17     with wxShowTip. Also, if you want to get the tips text from elsewhere than a
  18     simple text file, you will want to derive a new class from wxTipProvider and
  19     use it instead of the one returned by wxCreateFileTipProvider().
  20
  21     @library{wxadv}
  22     @category{misc}
  23
  24     @see @ref overview_tips, ::wxShowTip
  25 */
  26 class wxTipProvider
  27 {
  28 public:
  29     /**
  30         Constructor.
  31
  32         @param currentTip
  33             The starting tip index.
  34     */
  35     wxTipProvider(size_t currentTip);
  36
  37     /**
  38         Returns the index of the current tip (i.e. the one which would be returned by GetTip()).
  39
  40         The program usually remembers the value returned by this function after calling
  41         wxShowTip(). Note that it is not the same as the value which was passed to
  42         wxShowTip + 1 because the user might have pressed the "Next" button in
  43         the tip dialog.
  44     */
  45     size_t GetCurrentTip() const;
  46
  47     /**
  48         Return the text of the current tip and pass to the next one.
  49         This function is pure virtual, it should be implemented in the derived classes.
  50     */
  51     virtual wxString GetTip() = 0;
  52
  53     /**
  54         Returns a modified tip.
  55
  56         This function will be called immediately after read, and before being check
  57         whether it is a comment, an empty string or a string to translate.
  58         You can optionally override this in your custom user-derived class
  59         to optionally to modify the tip as soon as it is read. You can return any
  60         modification to the string. If you return wxEmptyString, then this tip is
  61         skipped, and the next one is read.
  62     */
  63     virtual wxString PreProcessTip(const wxString& tip);
  64 };
  65
  66
  67
  68 // ============================================================================
  69 // Global functions/macros
  70 // ============================================================================
  71
  72 /** @ingroup group_funcmacro_dialog */
  73 //@{
  74
  75 /**
  76     This function creates a wxTipProvider which may be used with wxShowTip().
  77
  78     @param filename
  79         The name of the file containing the tips, one per line.
  80     @param currentTip
  81         The index of the first tip to show. Normally this index is remembered
  82         between the 2 program runs.
  83
  84     @see @ref overview_tips
  85
  86     @header{wx/tipdlg.h}
  87 */
  88 wxTipProvider* wxCreateFileTipProvider(const wxString& filename,
  89                                        size_t currentTip);
  90
  91 /**
  92     This function shows a "startup tip" to the user. The return value is the
  93     state of the "Show tips at startup" checkbox.
  94
  95     @param parent
  96         The parent window for the modal dialog.
  97     @param tipProvider
  98         An object which is used to get the text of the tips. It may be created
  99         with the wxCreateFileTipProvider() function.
 100     @param showAtStartup
 101         Should be true if startup tips are shown, false otherwise. This is
 102         used as the initial value for "Show tips at startup" checkbox which is
 103         shown in the tips dialog.
 104
 105     @see @ref overview_tips
 106
 107     @header{wx/tipdlg.h}
 108 */
 109 bool wxShowTip(wxWindow *parent,
 110                wxTipProvider *tipProvider,
 111                bool showAtStartup = true);
 112
 113 //@}
 114