求助 数组作用域。。。。

private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e)
{
    ………………………………
    ………………………………
}

如何在 Form1_Load()函数中，定义并初始化一个结构体二维数组。

用于，存储每一个，单元格坐标位置，和存在的数字是多少。。。
因为，3行3列，4行4列，5行5列…………。不是固定的。。。
只在 Form1_Load()函数中 用gcnew 来定义。
在整个程序中，到处都需要使用这个结构体二维数组。

所以要求: 结构体二维数组,的作用域，是整个程序，(相当于全局变量)。

定义成全局变量，在Form1_Load中初始化。

说实话，我不会。水平太有限，只有点C语言基础。
还是，玩51单片机学会的。

这个需要定义成，结构体二维数组。 行数和列数不是固定的。
定义数组，mystruct num_array[][];
[][]中必须输入的是常量，不可以是变量。
所以，又不会了。。。
3X3数组，4X4数组，5X5数组， 行列数不是固定的。。。

如果在Form1_Load 中用 gcnew 定义的数组，就成了局部变量（数组）了。。。。

    private:struct MyStruct** aa;
    private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e) 
    {        
        aa = new  MyStruct* [10];
        for (size_t i = 0; i < 10; i++)
        {
            aa[i] = new MyStruct;
            aa[i]->fontSize = i;            
        }
    }

    private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e)
    {
        String^ s ="";
        for (size_t i = 0; i < 10; i++)
            s += aa[i]->fontSize.ToString() + "  ";        

        MessageBox::Show(s);
    }

谢谢。
定义二级指呀。。。
1、 用指针指向 Form1_Load 中定义的结构体，二维数组。
    这样 Form1_Load函数结束退出后，定义的二维数组，会不会，被释放掉，指针指向了错误数 据

2、  aa = new  MyStruct* [10];
     [10] 方括号中的10， 可以换成变量吗。。。。


真的不好意思，很多C++基础知识点还不清楚。。。
麻烦你了。。。。

MyStruct** aa;定义在formlaod外面，是全局变量，formload中只是初始化了。
10可以改成变量。
c++如果不是很熟练，建议直接用C#操作.net会更方便。
c++/CLR 是硬用c++语法凑出来的，超级难用，他编译出来的程序跟C#编译出来的几乎没有区别。

你要是会一点c++，c#入门很快的

其实你这个程序，用的是c的函数式方法。每个块用类来表达，在类中计算会更好一些。

[此贴子已经被作者于2022-7-26 10:10编辑过]

不是结构体成员。。。




只能初始化 1个数组。。。。
如何注释掉 Array1Init(), 就可以初始化Array2。





另有一个问题。。。
拖动窗口，改变窗口大小后。
重新输出后，数字 9 变成 402653193.
不知道，什么原因。

#pragma once

struct POINT
{
    int _X;
    int _Y;
};
struct UNIT
{
    POINT Zero;
    int Wide;
    int Number;
};
struct MyStruct
{
    POINT inPoint;
    int width, height;
    int fontSize;
};
namespace NumberGame {

    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>
    /// Form1 摘要
    /// </summary>
    public ref class Form1 : public System::Windows::Forms::Form
    {
    public:
        Form1(void)
        {
            InitializeComponent();
            //
            //TODO: 在此处添加构造函数代码
            //
        }
    protected:
        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>

        ~Form1()
        {
            if (components)
            {
                delete components;
            }
        }
    private: System::Windows::Forms::TableLayoutPanel^  tableLayoutPanel1;
    protected: 
    private: System::Windows::Forms::PictureBox^  pictureBox1;
    private: System::Windows::Forms::PictureBox^  pictureBox2;

    private:
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        System::ComponentModel::Container ^components;

#pragma region Windows Form Designer generated code
        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        void InitializeComponent(void)
        {
            this->tableLayoutPanel1 = (gcnew System::Windows::Forms::TableLayoutPanel());
            this->pictureBox1 = (gcnew System::Windows::Forms::PictureBox());
            this->pictureBox2 = (gcnew System::Windows::Forms::PictureBox());
            this->tableLayoutPanel1->SuspendLayout();
            (cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->BeginInit();
            (cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox2))->BeginInit();
            this->SuspendLayout();
            // 
            // tableLayoutPanel1
            // 
            this->tableLayoutPanel1->ColumnCount = 2;
            this->tableLayoutPanel1->ColumnStyles->Add((gcnew System::Windows::Forms::ColumnStyle(System::Windows::Forms::SizeType::Percent, 
                66.66666F)));
            this->tableLayoutPanel1->ColumnStyles->Add((gcnew System::Windows::Forms::ColumnStyle(System::Windows::Forms::SizeType::Percent, 
                33.33333F)));
            this->tableLayoutPanel1->Controls->Add(this->pictureBox1, 0, 0);
            this->tableLayoutPanel1->Controls->Add(this->pictureBox2, 1, 0);
            this->tableLayoutPanel1->Dock = System::Windows::Forms::DockStyle::Fill;
            this->tableLayoutPanel1->Location = System::Drawing::Point(0, 0);
            this->tableLayoutPanel1->Name = L"tableLayoutPanel1";
            this->tableLayoutPanel1->RowCount = 1;
            this->tableLayoutPanel1->RowStyles->Add((gcnew System::Windows::Forms::RowStyle(System::Windows::Forms::SizeType::Percent, 100)));
            this->tableLayoutPanel1->Size = System::Drawing::Size(784, 522);
            this->tableLayoutPanel1->TabIndex = 0;
            // 
            // pictureBox1
            // 
            this->pictureBox1->BackColor = System::Drawing::Color::FromArgb(static_cast<System::Int32>(static_cast<System::Byte>(192)), static_cast<System::Int32>(static_cast<System::Byte>(255)), 
                static_cast<System::Int32>(static_cast<System::Byte>(192)));
            this->pictureBox1->Dock = System::Windows::Forms::DockStyle::Fill;
            this->pictureBox1->Location = System::Drawing::Point(3, 3);
            this->pictureBox1->Name = L"pictureBox1";
            this->pictureBox1->Size = System::Drawing::Size(516, 516);
            this->pictureBox1->TabIndex = 0;
            this->pictureBox1->TabStop = false;
            // 
            // pictureBox2
            // 
            this->pictureBox2->BackColor = System::Drawing::Color::FromArgb(static_cast<System::Int32>(static_cast<System::Byte>(255)), static_cast<System::Int32>(static_cast<System::Byte>(192)), 
                static_cast<System::Int32>(static_cast<System::Byte>(192)));
            this->pictureBox2->Dock = System::Windows::Forms::DockStyle::Fill;
            this->pictureBox2->Location = System::Drawing::Point(525, 3);
            this->pictureBox2->Name = L"pictureBox2";
            this->pictureBox2->Size = System::Drawing::Size(256, 516);
            this->pictureBox2->TabIndex = 1;
            this->pictureBox2->TabStop = false;
            // 
            // Form1
            // 
            this->AutoScaleDimensions = System::Drawing::SizeF(6, 12);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(784, 522);
            this->Controls->Add(this->tableLayoutPanel1);
            this->Name = L"Form1";
            this->Text = L"Form1";
            this->Load += gcnew System::EventHandler(this, &Form1::Form1_Load);
            this->Resize += gcnew System::EventHandler(this, &Form1::Form1_Resize);
            this->tableLayoutPanel1->ResumeLayout(false);
            (cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox1))->EndInit();
            (cli::safe_cast<System::ComponentModel::ISupportInitialize^  >(this->pictureBox2))->EndInit();
            this->ResumeLayout(false);

        }
#pragma endregion
    private: static int barrier = 3;
    private: static int P2row = 0;
    private: static int P2col = 0;
    private: static int P2left = 0;
    private: static int P2top = 0;
    private: static int P2wide = 0;

    private: UNIT** Array1;
    private: UNIT** Array2;

    private: void Array1Init()
             {
              //------Array1初始化-------------
                 Array1 = new UNIT*[barrier];
                 for(int i=0; i<barrier; i++)
                 {
                      Array1[i] = new UNIT;
                     // Array1[i]->fontSize = i;  
                 }
                 int wide = (this->pictureBox1->Width-12)/barrier;
                 for(int i=0; i<barrier; i++)
                     for(int j=0; j<barrier; j++)
                     {
                         Array1[i][j].Wide = wide;
                         //Array1[i][j].Number = 0;
                         Array1[i][j].Number = i*barrier+j+1;
                         Array1[i][j].Zero._X = j*wide + 6;
                         Array1[i][j].Zero._Y = i*wide + 6;
                     }
             }
    //private: void Array2Init()
    //         {
    //             //------Array2初始化-------------
    //             Array2 = new UNIT*[P2row];
    //             for(int i=0; i<P2col; i++)
    //             {
    //                  Array2[i] = new UNIT;
    //                 // Array2[i]->fontSize = i;  
    //             }
    //             int wide = (this->pictureBox2->Width-2*P2left)/P2col;
    //         }
    private: MyStruct get_format(Point^ inpoint, int wide, int num)
    {

        int imgWide = (wide * 3) / 2;
        int fontsize = 0;// wide / len;

        System::Drawing::Font^ drawFont;

        SizeF layoutSize = SizeF(wide, wide);

        Graphics^ g = CreateGraphics();

        StringFormat^ sformat = gcnew StringFormat();
        sformat->Alignment = StringAlignment::Center;
        sformat->LineAlignment = StringAlignment::Center;
        sformat->FormatFlags = StringFormatFlags(0);

        SizeF sizeF(0, 0);
        while (sizeF.Width < wide)
        {
            fontsize++;
            drawFont = gcnew System::Drawing::Font("宋体", fontsize);
            sizeF = g->MeasureString(num.ToString(), drawFont, *inpoint, sformat);

            delete drawFont;
        }

        MyStruct _format;
        _format.fontSize = fontsize;
        _format.inPoint._X = inpoint->X + (wide - sizeF.Width) / 2;
        _format.inPoint._Y = inpoint->Y + (wide - sizeF.Height) / 2 + 5;
        _format.height = sizeF.Height;
        _format.width = sizeF.Width;

        delete sformat;
        delete g;

        return _format;

    }
    private: void draw_p1_num(Point^ inpoint, int wide, int num)
    {
        Bitmap^ drawimg = gcnew Bitmap(this->pictureBox1->Image);
        Graphics^ g = Graphics::FromImage(drawimg);
        SolidBrush^ MyBrush = gcnew SolidBrush(this->pictureBox1->BackColor);
        g->FillRectangle(MyBrush, Rectangle(inpoint->X + wide / 20, inpoint->Y + wide / 20, (wide * 9) / 10, (wide * 9) / 10));
        MyBrush->Color = Color::Black;

        inpoint->X += wide / 10;
        inpoint->Y += wide / 10;
        int d = (wide * 4) / 5;
        Rectangle rectEllip = Rectangle(inpoint->X, inpoint->Y, d, d);
        g->FillEllipse(MyBrush, rectEllip);

        MyStruct drawformat = get_format(inpoint, rectEllip.Width, num);
        System::Drawing::Font^ drawFont = gcnew System::Drawing::Font("宋体", drawformat.fontSize);

        Rectangle rectFont = Rectangle(drawformat.inPoint._X, drawformat.inPoint._Y, drawformat.width, drawformat.height);

        MyBrush->Color = this->pictureBox1->BackColor;
        g->DrawString(num.ToString(), drawFont, MyBrush, Point(drawformat.inPoint._X, drawformat.inPoint._Y));

        this->pictureBox1->Image = (Image^)drawimg->Clone();
        delete drawFont;
        delete g;
        delete drawimg;
    }
    private: void p1_all_out()
             {
                 for(int i=0; i<barrier; i++)
                    for(int j=0; j<barrier; j++)
                    {
                        draw_p1_num(Point(Array1[i][j].Zero._X, Array1[i][j].Zero._Y), Array1[i][j].Wide, Array1[i][j].Number);
                    }
             }
    private: void SetMaxSize()
             {
                int maxwidth = Screen::PrimaryScreen->WorkingArea.Width;
                int maxheight = Screen::PrimaryScreen->WorkingArea.Height;
                if(maxwidth > ((maxheight - 39)*3)/2+16)
                    maxwidth = ((maxheight - 39)*3)/2+16;
                else if(maxheight> ((maxwidth-16)*2)/3+39)
                    maxheight = ((maxwidth-16)*2)/3+39;
                //this->MaximumSize.Width = maxwidth;
                //this->MaximumSize.Height = maxheight;
                this->MaximumSize = System::Drawing::Size( maxwidth, maxheight);
             }
    private: void DrawChart2(int num)
    {
        int Swidth = (this->pictureBox2->Width - 12) / num;
        int totality = ((this->pictureBox2->Width - 12) / Swidth) * ((this->pictureBox2->Height - 12) / Swidth);
        while (totality >= num * num)
        {
            Swidth++;
            totality = ((this->pictureBox2->Width - 12) / Swidth) * ((this->pictureBox2->Height - 12) / Swidth);
        }
        Swidth--;
        
        int col = (this->pictureBox2->Width - 12) / Swidth;
        int row = (barrier * barrier) % col == 0 ? (barrier * barrier) / col : (barrier * barrier) / col + 1;
        int left = (this->pictureBox2->Width - col * Swidth) / 2;
        int    top = (this->pictureBox2->Height - row * Swidth) / 2;
        P2col = col;
        P2row = row;
        P2left = left;
        P2top = top;
        P2wide = Swidth;

        Bitmap^ drawimg = gcnew Bitmap(this->pictureBox2->Width, this->pictureBox2->Height);
        Graphics^ g = Graphics::FromImage(drawimg);
        Pen^ mypen = gcnew Pen(Color::Green, 1);

        for (int i = 0; i <= row; i++)
            g->DrawLine(mypen, Point(left, i * Swidth + top), Point(col * Swidth + left, i * Swidth + top));
        for (int i = 0; i <= col; i++)
            g->DrawLine(mypen, Point(i * Swidth + left, top), Point(i * Swidth + left, row * Swidth + top));

        this->pictureBox2->Image = (Image^)drawimg->Clone();
        delete g;
        delete drawimg;
    }
    private: void DrawChart(int num)
    {

        Bitmap^ drawimg = gcnew Bitmap(pictureBox1->Width, pictureBox1->Height);
        Graphics^ g = Graphics::FromImage(drawimg);

        Pen^ mypen = gcnew Pen(Color::Red, 1);
        int Swidth = (pictureBox1->Width - 12) / num;
        for (int i = 0; i <= num; i++)
            g->DrawLine(mypen, Point(6, i * Swidth + 6), Point(num * Swidth + 6, i * Swidth + 6));
        for (int i = 0; i <= num; i++)
            g->DrawLine(mypen, Point(i * Swidth + 6, 6), Point(i * Swidth + 6, num * Swidth + 6));

        this->pictureBox1->Image = (Image^)drawimg->Clone();

        delete g;
        delete drawimg;
    }
    private: void calc_point()
             {
                 int wide = (this->pictureBox1->Width-12)/barrier;
                 for(int i=0; i<barrier; i++)
                     for(int j=0; j<barrier; j++)
                     {
                         Array1[i][j].Wide = wide;
                         //Array1[i][j].Number = 0;
                         //Array1[i][j].Number = i*barrier+j+1;
                         Array1[i][j].Zero._X = j*wide + 6;
                         Array1[i][j].Zero._Y = i*wide + 6;
                     }
             }
    private: System::Void Form1_Resize(System::Object^  sender, System::EventArgs^  e) 
             {
                 Control^ control = dynamic_cast<Control^>(sender);

                 //拖动窗口比例缩放，确保pictureBox1 Size 为正方形.
                 int swidth = control->Size.Width;
                 int sheight = control->Size.Height;


                 if(sheight > 28) //sheight > 28 窗口不是最小化。
                 {
                     int maxwidth = Screen::PrimaryScreen->WorkingArea.Width;
                     int maxheight = Screen::PrimaryScreen->WorkingArea.Height;

                     if(swidth > maxwidth)
                        swidth = maxwidth;

                     sheight = ((swidth-16)*2)/3+39;

                     if(sheight>maxheight)
                     {
                         sheight = maxheight;
                         swidth = ((sheight - 39)*3)/2+16;
                     }
                     
                     control->Size = System::Drawing::Size(swidth, sheight);

                     //this->pictureBox1->Image=nullptr;
                     //this->pictureBox2->Image=nullptr;
                     DrawChart(barrier);
                     DrawChart2(barrier);
                     calc_point();
                     p1_all_out();
                 }
             }
    private: System::Void Form1_Load(System::Object^  sender, System::EventArgs^  e) 
             {
                 SetMaxSize();            //设置窗口最大尺寸
                 DrawChart(barrier);    //绘制图片框1,的表格
                 DrawChart2(barrier);    //绘制图片框2,的表格
                 Array1Init();            //Array1数组初始化
                 //Array2Init();            //Array2数组初始化

                 p1_all_out();            //输出图片框1全部单元格。
             }
};
}

UNIT中就没有fontSize。

[此贴子已经被作者于2022-8-3 00:23编辑过]