Qstring was not declared in the scope
时间: 2024-04-30 12:25:20 浏览: 10
This error message usually occurs when the compiler cannot find the declaration of the `QString` class.
To fix this error, make sure you have included the appropriate header file that declares the `QString` class. In most cases, you need to include the `QString` header file in your source code by adding the following line at the beginning of your source file:
```
#include <QString>
```
If you have already included the `QString` header file and still get the error message, check that you have correctly spelled the class name and that you are using the correct namespace (if applicable).
相关问题
qstring was not declared in this scope
这个错误提示表明你在代码中使用了 `qstring`,但是编译器并不知道 `qstring` 是什么东西。很可能是因为你忘记了包含相应的头文件。
如果你使用的是 Qt 平台,应该包含 `QString` 的头文件 `<QString>`。如果你已经包含了这个头文件,那么你可能忘记了在代码中加上 `using namespace std;` 或者 `using namespace Qt;`(根据你的环境而定)。
如果你不是在 Qt 平台上编写代码,那么 `qstring` 很可能是一个自定义的类型或者别名,你需要在代码中定义它或者包含相应的头文件。
D:\Qt\Layout\widget.cpp:7: error: 'Qstring' was not declared in this scope Qstring String[6] = {"A","B","C","D","E","F"}; ^
这个错误是因为你在代码中使用了错误的类型名称。在C++中,Qt中的字符串类型是`QString`,而不是`Qstring`。
要解决这个问题,你只需将`Qstring`改为`QString`即可。下面是修正后的代码:
```cpp
QString String[6] = {"A", "B", "C", "D", "E", "F"};
```
请注意,C++对大小写敏感,所以确保你的代码中的类型名称和其他标识符的大小写与文档中的一致。这样你就能够成功编译并消除该错误。