C# 实时创建控件窗口

基本上，我试图在Widows窗体上实时创建一个glControl窗口。我这样做是因为我将使用多个窗口，更有可能重新调整它们的位置，我不想手动执行此操作

我不明白为什么我的代码不起作用。这是：

using System;
using System.Drawing;
using System.Windows.Forms;

using System.Diagnostics;

using OpenTK;
using OpenTK.Graphics;
using OpenTK.Graphics.OpenGL;
using OpenTK.Platform;

namespace Draw3Dv01wf
{
    public partial class Form1 : Form
    {
        GLControl renderCanvas1;
        int winX, winY, winW, winH;

        public Form1()
        {
            // required method for designer support
            InitializeComponent();
        }


        // load event handler
        private void Form1_Load(object sender, EventArgs e)
        {
            // create and setup gl.control windows
            this.renderCanvas1 = new GLControl();
            //this.SuspendLayout();

            winX = this.Location.X; winY = this.Location.Y;
            winW = this.Width; winH = this.Height;

            this.renderCanvas1.BackColor = System.Drawing.Color.CadetBlue;
            this.renderCanvas1.Location = 
                new System.Drawing.Point(winX + 50, winY + 50);
            this.renderCanvas1.Name = "renderCanvas1";
            this.renderCanvas1.Size = new System.Drawing.Size(winW/3, winH/2);
            this.renderCanvas1.TabIndex = 1;
            this.renderCanvas1.VSync = false;
            this.renderCanvas1.Load += 
                new System.EventHandler(this.renderCanvas_Load);
            this.renderCanvas1.Paint += 
                new System.Windows.Forms.PaintEventHandler(
                    this.renderCanvas_Paint);
            //renderCanvas1.Paint += renderCanvas_Paint;
            //this.ResumeLayout(false);
        }

        private void renderCanvas_Paint(object sender, PaintEventArgs e)
        {
            GL.Viewport(winX + 20, winY + 25, Width, Height);

            // Clear the render canvas with the current color
            GL.Clear(
                ClearBufferMask.ColorBufferBit | 
                ClearBufferMask.DepthBufferBit);

            GL.Flush();
            renderCanvas1.SwapBuffers();
        }

        private void renderCanvas_Load(object sender, EventArgs e)
        {
            // Specify the color for clearing
            GL.ClearColor(Color.SkyBlue);
        }
    }
}

我只是在看windows窗体。glControl窗口不显示。 但是，当我手动将glControl添加到表单并添加此代码时：

    //____________________________________________

    private void glControl1_Load(object sender, EventArgs e)
    {
        // Specify the color for clearing
        GL.ClearColor(Color.SkyBlue);

        this.Paint += new PaintEventHandler(glControl1_Paint);
    }

    private void glControl1_Paint(object sender, PaintEventArgs e)
    {
        GL.Viewport(this.Location.X, this.Location.Y, Width, Height);

        // Clear the render canvas with the current color
        GL.Clear(
            ClearBufferMask.ColorBufferBit |
            ClearBufferMask.DepthBufferBit);

        GL.Flush();
        glControl1.SwapBuffers();
    }

    //________________________________________________________

。。。此窗口显示在窗体上

我的程序中的代码与设计器中的代码没有什么不同，所以我完全感到困惑

这是设计器代码：

    this.glControl1 = new OpenTK.GLControl();
    this.SuspendLayout();
    // 
    // glControl1
    // 
    this.glControl1.BackColor = System.Drawing.Color.Black;
    this.glControl1.Location = new System.Drawing.Point(385, 12);
    this.glControl1.Name = "glControl1";
    this.glControl1.Size = new System.Drawing.Size(476, 284);
    this.glControl1.TabIndex = 0;
    this.glControl1.VSync = false;
    this.glControl1.Load += new System.EventHandler(this.glControl1_Load);
    // 
    // Form1
    // 
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.BackColor = System.Drawing.SystemColors.Desktop;
    this.BackgroundImageLayout = System.Windows.Forms.ImageLayout.Stretch;
    this.ClientSize = new System.Drawing.Size(1264, 681);
    this.Controls.Add(this.glControl1);
    this.HelpButton = true;
    this.MaximumSize = new System.Drawing.Size(3840, 2160);
    this.MinimumSize = new System.Drawing.Size(640, 480);
    this.Name = "Form1";
    this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
    this.Text = "Draw3D";
    this.ResumeLayout(false);

---

我通过创建另一个glControl尝试了一些东西，但这次，不是在表单的加载事件处理程序中

public Form1()
{
    // required method for designer support
    InitializeComponent();
    initSetup();
}

private void initSetup()
{
    winX = this.Location.X; winY = this.Location.Y;
    winW = this.Width; winH = this.Height;

    this.renderCanvas2 = new GLControl();
    this.renderCanvas2.BackColor = System.Drawing.Color.DeepSkyBlue;
    this.renderCanvas2.Location =
        new System.Drawing.Point(winX + 150, winY + 150);
    this.renderCanvas2.Name = "renderCanvas2";
    this.renderCanvas2.Size = 
        new System.Drawing.Size(winW / 2, winH / 2);
    this.renderCanvas2.TabIndex = 1;
    this.renderCanvas2.VSync = false;
    this.renderCanvas2.Load +=
        new System.EventHandler(this.renderCanvas2_Load);
    this.renderCanvas2.Paint +=
        new System.Windows.Forms.PaintEventHandler(
            this.renderCanvas2_Paint);

    this.Controls.Add(this.renderCanvas2);
}

。。。它成功了。我不知道为什么。它还导致手动创建的glControl窗口在其原始位置变为黑色，如果移动，则变为白色。 然而，至少我得到了结果。我会继续玩它，看看我能想出什么。我有一种感觉，这可能与缓冲有关。 我的另一个选择是手动创建窗口，并通过代码调整它们的位置和大小，因为这样也可以。 如果有人知道，我仍然欢迎任何关于为什么代码不能在表单的加载事件处理程序中工作的输入。谢谢

编辑 我正在进步。我只有最后一步。 所以现在我使用一组glControls来创建我的窗口，但我不想创建多个事件处理程序来管理每个窗口，所以我尝试只使用一个Load事件和一个Paint事件来获得结果。 但是，我在设置所有窗口的颜色时遇到问题。我不确定这种方法是否可行。我真的非常感谢你在这方面的帮助。 以下是我的测试代码：

using...

namespace Draw3Dv01wf
{
    public partial class Form1 : Form
    {
        GLControl[] renderCanvas = new GLControl[10];
        private int 
            winX, winY, winW, winH, winDist, winNum, 
            aCol, rCol, gCol, bCol;
        Random randNum = new Random();
        //byte[] num = new byte[255];
        byte r, g, b, a;
        Color4 winCol;
        private bool winCreated;
        private bool eHandlerIs;

        TextBox tb = new TextBox();

        public Form1()
        {
            // required method for designer support
            InitializeComponent();
            initSetup();
        }

        private void initSetup()
        {
            winX = this.Location.X; winY = this.Location.Y;
            winW = this.Width; winH = this.Height;
            rCol = 255; gCol = 255; bCol = 255; aCol = 255;

            // debugging text
            tb.Location = new Point(5, 5);
            tb.Size = new Size(200, 15);
            tb.Name = "textBox1";
            tb.TabIndex = 0;
            tb.BackColor = Color.Black;
            tb.ForeColor = Color.White;
            tb.Text = winNum.ToString();
            this.Controls.Add(this.tb);

            // create windows
            for (int w=0; w<8; w++)
            {
                // window distance 
                winDist += 32;
                // make sure window with index 0 is created
                if (winCreated) { winNum += 1; }

                // create windows 
                this.renderCanvas[w] = new GLControl();
                //this.SuspendLayout();
                this.renderCanvas[w].BackColor = 
                    System.Drawing.Color.DeepSkyBlue;
                this.renderCanvas[w].Location =
                    new System.Drawing.Point(winX + winDist, winY + winDist);
                this.renderCanvas[w].Name = "renderCanvas" + w;
                this.renderCanvas[w].Size =
                    new System.Drawing.Size(winW / 2, winH / 2);
                this.renderCanvas[w].TabIndex = 1;
                this.renderCanvas[w].VSync = false;
                // create event handler 
                this.renderCanvas[w].Load +=
                    new System.EventHandler(this.renderCanvas_Load);
                if (!eHandlerIs)
                {
                    this.renderCanvas[w].Paint +=
                        new System.Windows.Forms.PaintEventHandler(
                            this.renderCanvas_Paint);
                    //eHandlerIs = true;
                }
                //this.ResumeLayout(false);

                // add specified control to the control collection 
                this.Controls.Add(this.renderCanvas[w]);
                winCreated = true; // first window created
            }
        }

        private void renderCanvas_Paint(object sender, PaintEventArgs e)
        {
            tb.Text = r.ToString();
            if (winNum < 7)
            {
                //GL.Viewport(
                //    renderCanvas[winNum].Location.X,
                //    renderCanvas[winNum].Location.Y, Width, Height);

                //// Clear the render canvas with the current color
                //GL.Clear(
                //    ClearBufferMask.ColorBufferBit |
                //    ClearBufferMask.DepthBufferBit);

                //GL.Flush();
                //renderCanvas[winNum].SwapBuffers();
            }
            else if (winNum >= 7)
            {
                for (int w = 0; w < 8; w++)
                {
                    GL.Viewport(
                    renderCanvas[w].Location.X,
                    renderCanvas[w].Location.Y, Width, Height);

                    // Clear the render canvas with the current color
                    GL.Clear(
                        ClearBufferMask.ColorBufferBit |
                        ClearBufferMask.DepthBufferBit);

                    GL.Flush();
                    renderCanvas[w].SwapBuffers();
                }
            }
        }

        private void renderCanvas_Load(object sender, EventArgs e)
        {
            // randomize color (min & max int)
            rCol = randNum.Next(100, 255);
            gCol = randNum.Next(100, 255);
            bCol = randNum.Next(100, 255);
            aCol = 255;
            // convert int to (32) byte
            r = (byte)(rCol >> 32);
            g = (byte)(gCol >> 32);
            b = (byte)(bCol >> 32);
            a = (byte)(aCol >> 32);
            // window final color
            winCol = new Color4(r, g, b, a);

            // Specify the color for clearing
            GL.ClearColor(winCol);
        }
    }
}

使用。。。
命名空间Draw3Dv01wf
{
公共部分类Form1:Form
{
GLControl[]renderCanvas=新GLControl[10]；
私有整数
winX，winY，winW，winH，Winist，winNum，
aCol、rCol、gCol、bCol；
Random randNum=新的Random（）；
//byte[]num=新字节[255]；
字节r，g，b，a；
Color4 winCol；
私人住宅；
私人布尔·埃汉德利斯；
TextBox tb=新的TextBox（）；
公共表格1（）
{
//设计器支持所需的方法
初始化组件（）；
初始化设置（）；
}
私有void initSetup（）
{
winX=this.Location.X；winY=this.Location.Y；
winW=this.Width；winH=this.Height；
rCol=255；gCol=255；bCol=255；aCol=255；
//调试文本
tb.位置=新点（5,5）；
tb.尺寸=新尺寸（200,15）；
tb.Name=“textBox1”；
tb.TabIndex=0；
tb.BackColor=Color.Black；
tb.ForeColor=颜色。白色；
tb.Text=winNum.ToString（）；
this.Controls.Add（this.tb）；
//创建窗口
对于（int w=0；w=7）
{
对于（int w=0；w<8；w++）
{
总图视口(
renderCanvas[w].Location.X，
renderCanvas[w].位置.Y，宽度，高度）；
//使用当前颜色清除渲染画布
德国劳埃德船级社(
ClearBufferMask.ColorBufferBit|
ClearBufferMask.DepthBufferBit）；
GL.Flush（）；
renderCanvas[w].SwapBuffers（）；
}
}
}
私有无效renderCanvas_加载（对象发送方，事件参数e）
{
//随机化颜色（最小和最大整数）
rCol=randNum.Next（100255）；
gCol=randNum.Next（100255）；
bCol=randNum.Next（100255）；
aCol=255；
//将int转换为（32）字节
r=（字节）（rCol>>32）；
g=（字节）（gCol>>32）；
b=（字节）（bCol>>32）；
a=（字节）（aCol>>32）；
//窗口最终颜色
winCol=新颜色4（r、g、b、a）；
//指定要清除的颜色
GL.ClearColor（winCol）；
}
}
}

。。。结果如下：

只有一个窗口有颜色。其他的都变黑了。我感谢您的反馈

编辑 明白了向救援提供电流。 void OpenTK.GLControl.MakeCurrent（）
使调用线程中此GLControl的基础线程成为当前线程。所有发出的OpenGL命令在下文中由该GLControl解释。 以下是代码的更新：

GLControl[] renderCanvas = new GLControl[10];
private int 
    winX, winY, winW, winH, winDist, winNum, win,
    aCol, rCol, gCol, bCol;
Random randNum = new Random();
//byte[] num = new byte[255];
byte r, g, b, a;
Color4 winCol;
private bool winCreated;
private bool eHandlerIs;

TextBox tb = new TextBox();

public Form1()
{
    // required method for designer support
    InitializeComponent();
    initSetup();
}

private void initSetup()
{
    winX = this.Location.X; winY = this.Location.Y;
    winW = this.Width; winH = this.Height;
    rCol = 255; gCol = 255; bCol = 255; aCol = 255;

    // debugging text
    tb.Location = new Point(5, 5);
    tb.Size = new Size(200, 15);
    tb.Name = "textBox1";
    tb.TabIndex = 0;
    tb.BackColor = Color.Black;
    tb.ForeColor = Color.White;
    tb.Text = winNum.ToString();
    this.Controls.Add(this.tb);

    // create windows
    for (int w=0; w<8; w++)
    {
        // window distance 
        winDist += 32;
        // make sure window with index 0 is created
        if (winCreated) { winNum += 1; }

        // create windows 
        this.renderCanvas[w] = new GLControl();
        //this.SuspendLayout();
        this.renderCanvas[w].BackColor = 
            System.Drawing.Color.DeepSkyBlue;
        this.renderCanvas[w].Location =
            new System.Drawing.Point(winX + winDist, winY + winDist);
        this.renderCanvas[w].Name = "renderCanvas" + w;
        this.renderCanvas[w].Size =
            new System.Drawing.Size(winW / 2, winH / 2);
        this.renderCanvas[w].TabIndex = 1;
        this.renderCanvas[w].VSync = false;
        // create event handler 
        this.renderCanvas[w].Load +=
            new System.EventHandler(this.renderCanvas_Load);
        if (!eHandlerIs)
        {
            this.renderCanvas[w].Paint +=
                new System.Windows.Forms.PaintEventHandler(
                    this.renderCanvas_Paint);
            //eHandlerIs = true;
        }
        //this.ResumeLayout(false);

        // add specified control to the control collection 
        this.Controls.Add(this.renderCanvas[w]);
        winCreated = true; // first window created
    }
}

private void renderCanvas_Paint(object sender, PaintEventArgs e)
{
    tb.Text = r.ToString();
    if (winNum < 7)
    {

    }
    else if (winNum >= 7)
    {
        for (int w = 0; w < 8; w++)
        {
            for (int n = 0; n < 8; n++)
            {
                if (w != n)
                {
                    if (renderCanvas[n].Created &&
                        renderCanvas[n].Context.IsCurrent)
                    { renderCanvas[n].Context.MakeCurrent(null); }
                }
            }

            if (renderCanvas[w].Context.IsCurrent == false)
            { renderCanvas[w].MakeCurrent(); }

            GL.Viewport(
            renderCanvas[w].Location.X,
            renderCanvas[w].Location.Y, Width, Height);

            // Clear the render canvas with the current color
            GL.Clear(
                ClearBufferMask.ColorBufferBit |
                ClearBufferMask.DepthBufferBit);

            GL.Flush();
            renderCanvas[w].SwapBuffers();
        }
    }
}

private void renderCanvas_Load(object sender, EventArgs e)
{
    // randomize color (min & max int)
    rCol = randNum.Next(100, 255);
    gCol = randNum.Next(100, 255);
    bCol = randNum.Next(100, 255);
    aCol = 255;
    // convert int to (32) byte
    r = (byte)(rCol >> 32);
    g = (byte)(gCol >> 32);
    b = (byte)(bCol >> 32);
    a = (byte)(aCol >> 32);
    // window final color
    winCol = new Color4(r, g, b, a);

    for (int n = 0; n < 8; n++)
    {
        if (win != n)
        {
            if (renderCanvas[n].Created && 
                renderCanvas[n].Context.IsCurrent)
            { renderCanvas[n].Context.MakeCurrent(null); }
        }
    }

    if (renderCanvas[win].Context.IsCurrent == false)
    { renderCanvas[win].MakeCurrent(); }

    // Specify the color for clearing
    GL.ClearColor(winCol);
    win += 1;
}

GLControl[]renderCanvas=新的GLControl[10]；
私有整数
winX，winY，winW，winH，Windit，winNum，win，
aCol、rCol、gCol、bCol；
Random randNum=新的Random（）；
//byte[]num=新字节[255]；
字节r，g，b，a；
Color4 winCol；
私人住宅；
私人布尔·埃汉德利斯；
TextBox tb=新的TextBox（）；
公共表格1（）
{
//设计器支持所需的方法
初始化组件（）；
初始化设置（）；
}
私有void initSetup（）
{
winX=this.Location.X；winY=this.Location.Y；
winW=this.Width；winH=this.Height；
rCol=255；gCol=255；bCol=255；aCol=255；
//调试文本
tb.位置=新点（5,5）；
tb.尺寸=新尺寸（200,15）；
tb.Name=“textBox1”；
tb.TabIndex=0；
tb.BackColor=Color.Black；
tb.ForeColor=颜色。白色；
tb.Text=winNum.ToString（）；
this.Controls.Add（this.tb）；
//创建窗口
对于（int w=0；w=7）
{
对于（int w=0；w<8；w++）
{
对于（int n=0；n<8；n++）
{
如果（w！=n）
{
如果（renderCanvas[n]。已创建&&
renderCanvas[n].Context.IsCurrent）
{renderCanvas[n].Context.MakeCurrent（null）；}
}
}
if（renderCanvas[w].Context.IsCurrent==false）