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我在C++中学习一个类，并且已经给了我的第一个项目。在课堂上，教授只是谈论语法，语法等。他从不谈论如何使用Visual Studio。他向我们发送了一个没有任何解释的头文件，并希望我们将它用于该项目。我不太清楚如何开始使用这个文件。我试图创建一个空的Visual C++项目，添加这个文件并运行它，但是对于其中一个，无处不在和两个红色的下划线错误，VS说它找不到可执行文件。如果有人能帮助我获得VS和/或我的项目，我可以负责编写这个程序（刚刚用Java编写完全相同的程序）。只用一个头文件开始一个新项目
这是他发给我们的头文件。从外观上看，他有点sl。。
#pragma once
namespace control2 {
using namespace System;
using namespace System::IO; // added by Zhang
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
/// <summary>
/// Summary for Form1
///
/// WARNING: If you change the name of this class, you will need to change the
/// 'Resource File Name' property for the managed resource compiler tool
/// associated with all .resx files this class depends on. Otherwise,
/// the designers will not be able to interact properly with localized
/// resources associated with this form.
/// </summary>
public ref class Form1 : public System::Windows::Forms::Form
{
public:
Form1(void)
{
InitializeComponent();
//
//TODO: Add the constructor code here
//
// added by Zhang
StreamReader ^sr = gcnew StreamReader("control.txt");
this->choice=Int32::Parse(sr->ReadLine());
sr->Close();
}
protected:
/// <summary>
/// Clean up any resources being used.
/// </summary>
~Form1()
{
if (components)
{
delete components;
}
}
private:
/// <summary>
/// Required designer variable.
/// </summary>
System::ComponentModel::Container ^components;
int choice;
#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();
//
// Form1
//
this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
this->ClientSize = System::Drawing::Size(292, 266);
this->Name = L"Form1";
this->Text = L"CS351";
this->Paint += gcnew System::Windows::Forms::PaintEventHandler(this, &Form1::Form1_Paint);
this->ResumeLayout(false);
}
#pragma endregion
private: System::Void Form1_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) {
Graphics ^g = e->Graphics;
// g->Clear(BackColor);
// g->Clear(Color::Red);
for (int y = 0; y < 10; y++) {
// pick the shape based on the user's choice
switch (choice)
{
case 1: // draw rectangles
g->DrawRectangle(Pens::Black, 10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10);
break;
case 2: // draw ovals
// g->DrawEllipse(Pens::Black, 10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10);
g->DrawArc(Pens::Black, 10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10, 0, 360);
break;
case 3: // fill rectangles
g->FillRectangle(Brushes::Red, 10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10);
break;
case 4: // fill ovals
// g->FillEllipse(gcnew SolidBrush(Color::Red), 10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10);
g->FillPie(gcnew SolidBrush(Color::Red), 10 + i * 10, 10 + i * 10, 50 + i * 10, 50 + i * 10, 0, 360);
break;
default: // draw lines
g->DrawLine(Pens::Black, 10 + i * 10, 60 + i * 20, 60 + i * 20, 10 + i * 10);
break;
} // end switch
} // end for
choice=(choice+1)%5;
}
};
}
此代码不是C++ ...关闭，但那些流浪的'^'真的很混乱。不知道他是否输入了＆＆。 –
我认为这是C++ - cli，不是吗？ –
该代码实际上不会生成程序。它只是定义一些东西。你必须提供实际使用这些东西的代码。例如教授给你提供了蓝图，但你必须用这些计划建造一所房子。 –