39 lines
689 B
Markdown
39 lines
689 B
Markdown
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# ITask::OnCancel
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```cpp
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virtual void OnCancel()
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```
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任务取消回调。可在派生类中重写此方法，以在任务被取消时执行清理操作。
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**参数：** 无
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**返回：** 无
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**复杂度：** 取决于具体实现
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**示例：**
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```cpp
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class NetworkTask : public ITask {
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public:
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void Execute() override {
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for (int i = 0; i < 100; ++i) {
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if (GetStatus() == TaskStatus::Canceled) {
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return;
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}
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SendPacket(i);
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}
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}
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void OnCancel() override {
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CloseConnection();
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printf("Network task canceled\n");
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}
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};
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```
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## 相关文档
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- [ITask 总览](task.md) - 返回类总览
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