ckeditor 捕获键代码

<!--<script type="text/javascript">
    var ctrlKey = false;
    var shiftKey = false;
    if(typeof(CKEDITOR)!='undefined') {
        for(instance in CKEDITOR.instances) {
            var editor = CKEDITOR.instances[instance];
            editor.on('instanceReady', function(){
                this.document.on("keydown", function(e) {
                    var keyCode = e.data.getKey();
                    if(keyCode == 17) {
                        ctrlKey = true;
                    } else if(keyCode == 16) {
                        shiftKey = true;
                    }
                    //console.debug(keyCode);
                },null,null,1)
                this.document.on("keydown", function(e) {
                    var keyCode = e.data.getKey();
                    if(ctrlKey && keyCode == 86) {
                        alert(editor);
                        var dialogObj = new CKEDITOR.dialog(editor, function() {});
                        alert(dialogObj);
                        dialogObj.show();
                    }
                    //console.debug(keyCode);
                },null,null,1)
            });
        }
    }
</script>-->