interface/datectrl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        datectrl.h
   3 // Purpose:     interface of wxDatePickerCtrl
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows license
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxDatePickerCtrl
  11     @wxheader{datectrl.h}
  12
  13     This control allows the user to select a date. Unlike
  14     wxCalendarCtrl, which is a relatively big control,
  15     wxDatePickerCtrl is implemented as a small window showing the currently
  16     selected date.
  17     The control can be edited using the keyboard, and can also display a popup
  18     window for more user-friendly date selection, depending on the styles used and
  19     the platform, except PalmOS where date is selected using native dialog.
  20
  21     It is only available if @c wxUSE_DATEPICKCTRL is set to 1.
  22
  23     @beginStyleTable
  24     @style{wxDP_SPIN}
  25            Creates a control without a month calendar drop down but with
  26            spin-control-like arrows to change individual date components. This
  27            style is not supported by the generic version.
  28     @style{wxDP_DROPDOWN}
  29            Creates a control with a month calendar drop-down part from which
  30            the user can select a date.
  31     @style{wxDP_DEFAULT}
  32            Creates a control with the style that is best supported for the
  33            current platform (currently wxDP_SPIN under Windows and
  34            wxDP_DROPDOWN elsewhere).
  35     @style{wxDP_ALLOWNONE}
  36            With this style, the control allows the user to not enter any valid
  37            date at all. Without it - the default - the control always has some
  38            valid date.
  39     @style{wxDP_SHOWCENTURY}
  40            Forces display of the century in the default date format. Without
  41            this style the century could be displayed, or not, depending on the
  42            default date representation in the system.
  43     @endStyleTable
  44
  45     @beginEventTable{wxDateEvent}
  46     @event{EVT_DATE_CHANGED(id, func)}
  47            This event fires when the user changes the current selection in the control.
  48     @endEventTable
  49
  50     @library{wxadv}
  51     @category{miscpickers}
  52     @appearance{datepickerctrl.png}
  53
  54     @see wxCalendarCtrl, wxDateEvent
  55 */
  56 class wxDatePickerCtrl : public wxControl
  57 {
  58 public:
  59     /**
  60         Initializes the object and calls Create() with
  61         all the parameters.
  62     */
  63     wxDatePickerCtrl(wxWindow* parent, wxWindowID id,
  64                      const wxDateTime& dt = wxDefaultDateTime,
  65                      const wxPoint& pos = wxDefaultPosition,
  66                      const wxSize& size = wxDefaultSize,
  67                      long style = wxDP_DEFAULT | wxDP_SHOWCENTURY,
  68                      const wxValidator& validator = wxDefaultValidator,
  69                      const wxString& name = "datectrl");
  70
  71     /**
  72         @param parent
  73             Parent window, must not be non-@NULL.
  74         @param id
  75             The identifier for the control.
  76         @param dt
  77             The initial value of the control, if an invalid date (such as the
  78             default value) is used, the control is set to today.
  79         @param pos
  80             Initial position.
  81         @param size
  82             Initial size. If left at default value, the control chooses its
  83             own best size by using the height approximately equal to a text control and
  84             width large enough to show the date string fully.
  85         @param style
  86             The window style, should be left at 0 as there are no
  87             special styles for this control in this version.
  88         @param validator
  89             Validator which can be used for additional date checks.
  90         @param name
  91             Control name.
  92
  93         @returns @true if the control was successfully created or @false if
  94                  creation failed.
  95     */
  96     bool Create(wxWindow* parent, wxWindowID id,
  97                 const wxDateTime& dt = wxDefaultDateTime,
  98                 const wxPoint& pos = wxDefaultPosition,
  99                 const wxSize& size = wxDefaultSize,
 100                 long style = wxDP_DEFAULT | wxDP_SHOWCENTURY,
 101                 const wxValidator& validator = wxDefaultValidator,
 102                 const wxString& name = "datectrl");
 103
 104     /**
 105         If the control had been previously limited to a range of dates using
 106         SetRange(), returns the lower and upper
 107         bounds of this range. If no range is set (or only one of the bounds is set),
 108          @a dt1 and/or @a dt2 are set to be invalid.
 109
 110         @param dt1
 111             Pointer to the object which receives the lower range limit or
 112             becomes invalid if it is not set. May be @NULL if the caller is not
 113             interested in lower limit
 114         @param dt2
 115             Same as above but for the upper limit
 116
 117         @returns @false if no range limits are currently set, @true if at least one
 118                  bound is set.
 119     */
 120     bool GetRange(wxDateTime* dt1, wxDateTime dt2) const;
 121
 122     /**
 123         Returns the currently selected. If there is no selection or the selection is
 124         outside of the current range, an invalid object is returned.
 125     */
 126     wxDateTime GetValue() const;
 127
 128     /**
 129         Please note that this function is only available in the generic version of this
 130         control. The native version always uses the current system locale.
 131         Sets the display format for the date in the control. See wxDateTime for the
 132         meaning of format strings.
 133
 134         @remarks If the format parameter is invalid, the behaviour is undefined.
 135     */
 136     void SetFormat(const wxChar* format);
 137
 138     /**
 139         Sets the valid range for the date selection. If @a dt1 is valid, it becomes
 140         the earliest date (inclusive) accepted by the control. If @a dt2 is valid,
 141         it becomes the latest possible date.
 142
 143         @remarks If the current value of the control is outside of the newly set
 144                  range bounds, the behaviour is undefined.
 145     */
 146     void SetRange(const wxDateTime& dt1, const wxDateTime& dt2);
 147
 148     /**
 149         Changes the current value of the control. The date should be valid and included
 150         in the currently selected range, if any.
 151         Calling this method does not result in a date change event.
 152     */
 153     void SetValue(const wxDateTime& dt);
 154 };
 155