使用 Visual C++字符串变量作为对象

发布于 2024-11-03 09:42:51 字数 532 浏览 0 评论 0原文

我刚刚学习 C++，在经历了从使用 HTML、CSS 和 Javascript 到一种我仍然不太理解的全新代码编写方式的震惊之后，我正在慢慢掌握它的窍门。但我已经能够制作一个网络浏览器程序。

现在我一直需要使用变量，并且在一些谷歌搜索之后找到了如何使用字符串（或者至少是一种让它们为我工作的方法），如下所示：

#include <string>
namespace Browser1 {
      using namespace std;
...
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
      String^ var = "label1";
      String^ var2 = "hello world";
      var->Text = var2;
}

但是后来我收到这些错误，说 Text 是一个不明确的符号。我几乎可以肯定这是因为我使用了变量作为对象，但为什么呢？

原文

I am just learning C++ and slowly getting the hang of it after such a shock from working with HTML, CSS and Javascript to a completely new way of writing code which I still don't really understand. But I have been able to make a web browser program.

Now I've been needing the use of variables, and after some Googling have worked out how to use strings (or at least a way to get them working for me) like so:

#include <string>
namespace Browser1 {
      using namespace std;
...
private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
      String^ var = "label1";
      String^ var2 = "hello world";
      var->Text = var2;
}

But then I get these errors saying that the Text is an ambiguous symbol. I am almost certain this is because I have used the variable as the object but why?

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空宴 2024-11-10 09:42:52

您认为哪个对象被类型化为 Object 导致了这种情况？

你的问题是

      var->Text = var2;

哪个是垃圾，因为 var 被声明为 String^ （两行），所以它不能有 Text 属性。当然，您打算使用另一个变量？（比如发件人？）

Which object would you think is typed as Object that causes this?

Afaict your problem is

      var->Text = var2;

which is rubbish, because var is declared as String^ (2 lines up) so it can't have the Text property. Surely, you were intending to use another variable? (Such as sender?)

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