blockly >拖动 >拖动器 >onDragStart
Dragger.onDragStart() 方法
处理任何拖动启动。
Signature:
onDragStart(e: PointerEvent): void;
参数
| 参数 | 类型 | 说明 |
|---|---|---|
| e | PointerEvent |
返回：
void
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最后更新时间 (UTC)：2025-07-25。
[[["易于理解","easyToUnderstand","thumb-up"],["解决了我的问题","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["没有我需要的信息","missingTheInformationINeed","thumb-down"],["太复杂/步骤太多","tooComplicatedTooManySteps","thumb-down"],["内容需要更新","outOfDate","thumb-down"],["翻译问题","translationIssue","thumb-down"],["示例/代码问题","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["最后更新时间 (UTC)：2025-07-25。"],[[["The `onDragStart()` method is called when a drag operation begins, setting up the necessary conditions for dragging."],["It takes a `PointerEvent` object as input, providing information about the drag initiation event."],["This method is crucial for initializing the drag process and managing the behavior of the dragged element."]]],["The `onDragStart()` method, part of the `Dragger` class within the `dragging` namespace, manages the initiation of a drag action. It accepts a `PointerEvent` object (e) as a parameter and does not return any value. This method's primary function is to handle the setup and beginning stages of the drag process.\n"]]