event occurs before block selection
start | cellId | the id of start cell |
end | cellId | the id of the end cell |
isFinal | boolean | is selection still in progress or finalized |
$$("dt").attachEvent("onBeforeBlockSelect", function(start, end, isFinal){
return true;
});
Return false to block selection
You can modify the start and end object to change the result of blockselection.
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