如何在 C++/CLI 中将结构传递给后台工作线程

Question

struct ArgumentList {
        int x;
        string text1;
};

/////////////////////////////////////////

ArgumentList arg1={12,"text123"}
WorkerThread->RunWorkerAsync(arg1);

我想传递 arg1 但编译器显示“错误 C2664: 'void System::ComponentModel::BackgroundWorker::RunWorkerAsync(System::Object ^)' : 无法将参数 1 从 'ArgumentList' 转换为 'System::Object ^' ”

System::Void backgroundWorker2_DoWork(System::Object^  sender, System::ComponentModel::DoWorkEventArgs^  e) {
    //Do stuff with e->Argument
    ArgumentList passedarg=(ArgumentList)e->argument; //'type cast' : cannot convert from 'System::Object ^' to 'ArgumentList'
    int y=passedarg.x
    string text2=passedarg.text1
    //...

        }

Answer 1

看起来您需要使用以下方法将您的结构声明为 托管结构关键字 ref

ref struct ArgumentList {
        int x;
        string text1;
};

这样它将正确地从 RunWorkerAsync(Object) 期望