|Century Embedded Technologies Nano-X SDK and Developer's Guide|
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Events are identified by an Fl_Event enumeration value. The following events are currently defined:
FL_NO_EVENT - No event (or an event fltk does not understand) occurred (0).
FL_PUSH - A mouse button was pushed.
FL_RELEASE - A mouse button was released.
FL_ENTER - The mouse pointer entered a widget.
FL_LEAVE - The mouse pointer left a widget.
FL_DRAG - The mouse pointer was moved with a button pressed.
FL_FOCUS - A widget should receive keyboard focus.
FL_UNFOCUS - A widget loses keyboard focus.
FL_KEYBOARD - A key was pressed.
FL_CLOSE - A window was closed.
FL_MOVE - The mouse pointer was moved with no buttons pressed.
FL_SHORTCUT - The user pressed a shortcut key.
FL_DEACTIVATE - The widget has been deactivated.
FL_ACTIVATE - The widget has been activated.
FL_HIDE - The widget has been hidden.
FL_SHOW - The widget has been shown.
FL_SELECTIONCLEAR - The widget should clear any selections made for the clipboard.