# TaskGroup::Cancel

```cpp
void Cancel();
```

取消任务组中所有尚未开始执行的任务。已经执行完成的任务和正在执行的任务不受影响。

**参数：** 无

**返回：** 无

**线程安全：** ✅ 线程安全

**示例：**

```cpp
#include "XCEngine/Threading/TaskGroup.h"
#include "XCEngine/Threading/Task.h"
#include <iostream>
#include <chrono>

using namespace XCEngine::Threading;

int main() {
    TaskGroup group;

    for (int i = 0; i < 10; ++i) {
        group.AddTask([i]() {
            std::cout << "Task " << i << " executing\n";
            std::this_thread::sleep_for(std::chrono::milliseconds(100));
        });
    }

    std::this_thread::sleep_for(std::chrono::milliseconds(150));

    std::cout << "Cancelling remaining tasks...\n";
    group.Cancel();

    group.Wait();
    std::cout << "Tasks cancelled. Final progress: " << (group.GetProgress() * 100) << "%\n";

    return 0;
}
```

## 相关文档

- [TaskGroup 总览](task-group.md) - 返回类总览