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man pages section 3: Extended Library Functions, Volume 1

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Updated: Wednesday, July 27, 2022
 
 

wxCommandEvent (3erl)

Name

wxCommandEvent - Functions for wxCommandEvent class

Synopsis

Please see following description for synopsis

Description

wxCommandEvent(3)          Erlang Module Definition          wxCommandEvent(3)



NAME
       wxCommandEvent - Functions for wxCommandEvent class

DESCRIPTION
       This event class contains information about command events, which orig-
       inate from a variety of simple controls.

       Note that wxCommandEvents and wxCommandEvent-derived event  classes  by
       default  and unlike other wxEvent-derived classes propagate upward from
       the source window (the window which emits the event) up  to  the  first
       parent which processes the event. Be sure to read overview_events_prop-
       agation.

       More complex controls, such as wxTreeCtrl, have separate command  event
       classes.

       This class is derived (and can use functions) from: wxEvent

       wxWidgets docs: wxCommandEvent

EVENTS
       Use  wxEvtHandler:connect/3  with  wxCommandEventType  to  subscribe to
       events of this type.

DATA TYPES
       wxCommandEvent() = wx:wx_object()

       wxCommand() =
           #wxCommand{type = wxCommandEvent:wxCommandEventType(),
                      cmdString = unicode:chardata(),
                      commandInt = integer(),
                      extraLong = integer()}

       wxCommandEventType() =
           command_button_clicked | command_checkbox_clicked |
           command_choice_selected | command_listbox_selected |
           command_listbox_doubleclicked | command_text_updated |
           command_text_enter | text_maxlen | command_menu_selected |
           command_slider_updated | command_radiobox_selected |
           command_radiobutton_selected | command_scrollbar_updated |
           command_vlbox_selected | command_combobox_selected |
           combobox_dropdown | combobox_closeup | command_tool_rclicked |
           command_tool_enter | tool_dropdown |
           command_checklistbox_toggled | command_togglebutton_clicked |
           command_left_click | command_left_dclick |
           command_right_click | command_set_focus | command_kill_focus |
           command_enter | notification_message_click |
           notification_message_dismissed | notification_message_action

EXPORTS
       getClientData(This) -> term()

              Types:

                 This = wxCommandEvent()

              Returns client object pointer for a listbox or choice  selection
              event (not valid for a deselection).

       getExtraLong(This) -> integer()

              Types:

                 This = wxCommandEvent()

              Returns extra information dependent on the event objects type.

              If  the  event  comes  from a listbox selection, it is a boolean
              determining whether the event was a selection (true) or a  dese-
              lection (false). A listbox deselection only occurs for multiple-
              selection boxes, and in this case the index  and  string  values
              are indeterminate and the listbox must be examined by the appli-
              cation.

       getInt(This) -> integer()

              Types:

                 This = wxCommandEvent()

              Returns the  integer  identifier  corresponding  to  a  listbox,
              choice or radiobox selection (only if the event was a selection,
              not a deselection), or a boolean value representing the value of
              a checkbox.

              For  a  menu  item,  this  method  returns -1 if the item is not
              checkable or a boolean value (true or false) for checkable items
              indicating the new state of the item.

       getSelection(This) -> integer()

              Types:

                 This = wxCommandEvent()

              Returns  item index for a listbox or choice selection event (not
              valid for a deselection).

       getString(This) -> unicode:charlist()

              Types:

                 This = wxCommandEvent()

              Returns item string for a listbox or choice selection event.

              If one or several items have been deselected, returns the  index
              of  the  first deselected item. If some items have been selected
              and others deselected at the same time, it will return the index
              of the first selected item.

       isChecked(This) -> boolean()

              Types:

                 This = wxCommandEvent()

              This  method  can be used with checkbox and menu events: for the
              checkboxes, the method returns true for a  selection  event  and
              false for a deselection one.

              For the menu events, this method indicates if the menu item just
              has become checked or unchecked (and thus only makes  sense  for
              checkable menu items).

              Notice  that this method cannot be used with wxCheckListBox cur-
              rently.

       isSelection(This) -> boolean()

              Types:

                 This = wxCommandEvent()

              For a listbox or similar event, returns true if it is  a  selec-
              tion, false if it is a deselection.

              If  some  items  have been selected and others deselected at the
              same time, it will return true.

       setInt(This, IntCommand) -> ok

              Types:

                 This = wxCommandEvent()
                 IntCommand = integer()

              Sets the m_commandInt member.

       setString(This, String) -> ok

              Types:

                 This = wxCommandEvent()
                 String = unicode:chardata()

              Sets the m_commandString member.



wxWidgets team.                    wx 2.1.1                  wxCommandEvent(3)