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MultiCall - a class which inherits its methods from a Tkinter widget (Text, for
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example), but enables multiple calls of functions per virtual event - all
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matching events will be called, not only the most specific one. This is done
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by wrapping the event functions - event_add, event_delete and event_info.
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MultiCall recognizes only a subset of legal event sequences. Sequences which
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are not recognized are treated by the original Tk handling mechanism. A
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more-specific event will be called before a less-specific event.
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The recognized sequences are complete one-event sequences (no emacs-style
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Ctrl-X Ctrl-C, no shortcuts like <3>), for all types of events.
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Key/Button Press/Release events can have modifiers.
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The recognized modifiers are Shift, Control, Option and Command for Mac, and
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Control, Alt, Shift, Meta/M for other platforms.
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For all events which were handled by MultiCall, a new member is added to the
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event instance passed to the binded functions - mc_type. This is one of the
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event type constants defined in this module (such as MC_KEYPRESS).
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For Key/Button events (which are handled by MultiCall and may receive
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modifiers), another member is added - mc_state. This member gives the state
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of the recognized modifiers, as a combination of the modifier constants
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also defined in this module (for example, MC_SHIFT).
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Using these members is absolutely portable.
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The order by which events are called is defined by these rules:
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1. A more-specific event will be called before a less-specific event.
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2. A recently-binded event will be called before a previously-binded event,
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unless this conflicts with the first rule.
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Each function will be called at most once for each event.
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D] } t | ^ qé k r t } n t } | s d } n6 t | d k rR| j
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| d rR| d } n d S| | | f S( s- Get a string which should describe an event sequence. If it is
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successfully parsed as one, return a tuple containing the state (as an int),
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the event type (as an index of _types), and the detail - None if none, or a
|
string if there is one. If the parsing is unsuccessful, return None.
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0c s> t k r t Sd f f d Y} | t <| S( s© Return a MultiCall class which inherits its methods from the
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given widget class (for example, Tkinter.Text). This is used
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instead of a templating mechanism.
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