C ++错误：名称后跟'::'必须是类或命名空间名称。 WindowsForm中的DLL [英] C++ Error: name followed by '::' must be a class or namespace name. WindowsForm in DLL

问题描述

所以我在Visual studio 2012中创建了一个windows32 C ++ dll应用程序，然后我在头文件部分添加了一个窗体，并给它名为UserInterface.h。当我单击添加按钮，我得到一个弹出窗口说：您正在添加一个CLR组件到一个本地项目。您的项目将被转换为具有Common Language Runtime支持，你要继续吗？我点击是，它做了文件UserInterface1.cpp和UserInterface1.h。

So i made a windows32 C++ dll application in visual studio 2012 and then i added a windows form in the header files section and gave it the name "UserInterface.h". When i clicked the Add button i got a popup saying "You are adding a CLR component to a native project. Your project will be converted to have Common Language Runtime support. Do you wish to continue?" and i clicked yes and it made the files "UserInterface1.cpp" and "UserInterface1.h".

但在UserInterface1.h中有错误。这里是它的内容：

but in the "UserInterface1.h" there are errors all over. here are its contents:

#pragma once

namespace AssultCubeDLL {


    //ERRORS HERE: ******************************************************
using namespace System;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;

/// <summary>
/// Summary for UserInterface
/// </summary>
    // ERROS HERE: *********************************************************
public ref class UserInterface : public System::Windows::Forms::Form
{
public:
    UserInterface(void)
    {
        InitializeComponent();
        //
        //TODO: Add the constructor code here
        //
    }

protected:
    /// <summary>
    /// Clean up any resources being used.
    /// </summary>
    ~UserInterface()
    {
        if (components)
        {
            delete components;
        }
    }

private:
    /// <summary>
    /// Required designer variable.
    /// </summary>
           // ERRORS HERE: ************************************************
    System::ComponentModel::Container ^components;

    #pragma region Windows Form Designer generated code
    /// <summary>
    /// Required method for Designer support - do not modify
    /// the contents of this method with the code editor.
    /// </summary>
    void InitializeComponent(void)
    {
        this->SuspendLayout();
        // 
        // UserInterface
        // ERRORS HERE: *******************************************************
        this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
        this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
        this->ClientSize = System::Drawing::Size(284, 262);
        this->Name = L"UserInterface";
        this->Text = L"UserInterface";
        this->Load += gcnew System::EventHandler(this, &UserInterface::UserInterface_Load);
        this->ResumeLayout(false);

    }
    #pragma endregion
private: System::Void UserInterface_Load(System::Object^  sender, System::EventArgs^  e) {
         }
};
}

我添加了注释到错误弹出的地方， '::'必须是类或命名空间名称。有人知道我为什么会遇到这些问题？

I added comments to where the errors pop up like "Error: name followed by '::' must be a class or namespace name." does anyone know why i am getting these problems?

推荐答案

您需要创建一个混合模式应用程序。 Microsoft已针对所需步骤清除说明。

You will need to create a mixed mode application. Microsoft has clear instructions for the required steps.

MS指令将解决System和System :: Collections的问题，但不能解决System :: ComponentModel，System :: Windows :: Forms，System :: Data的问题， System :: Drawing。

The MS instructions will resolve the problem for System and System::Collections, but does not resolve the issues for System::ComponentModel, System::Windows::Forms, System::Data, and System::Drawing.

要编译，必须向应用程序添加缺少的DLL的引用。您可以从stdafx.h文件中使用< System.Windows.Forms> 删除。右键单击属性并选择引用... ，然后选择添加新引用，然后检查以下DLL





To compile, you must add references for the missing DLLs to the application. You can remove the using <System.Windows.Forms> from the stdafx.h file. Right-click properties and select References..., then select Add New Reference, then check the following DLLs

System
System.Data
System.Drawing
System.Windows.Forms

代码现在将编译。

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