onBeforeTaskDrag
Description
当用户按下鼠标按钮并开始拖动,但在 dhtmlxGantt 开始拖放操作之前触发
onBeforeTaskDrag: (id: string | number, mode: string, e: Event) => boolean;
Parameters
id- (required) string | number - 任务 IDmode- (required) string - 拖拽模式("resize", "progress", "move", "ignore")e- (required) Event - 一个原生事件对象
Returns
result- (boolean) - 定义事件的默认行为是否会被触发(true)或取消(false)
Example
gantt.attachEvent("onBeforeTaskDrag", function(id, mode, e){
// 在这里插入您的自定义逻辑
return true;
});
Related samples
Details
该事件在用户在时间线区域拖动任务时触发。
该事件是可阻塞的。返回 false,任务将回到初始位置。
Related API
Related Guides
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