基于C#实现磁性吸附窗体

目录

• 实践过程
• 效果
• 代码

实践过程

效果

代码

public partial class Frm_Libretto : Form
{
    public Frm_Libretto()
    {
        InitializeComponent();
    }

    #region 公共变量

    FrmClass Cla_FrmClass = new FrmClass();

    #endregion

    private void Frm_Libretto_Load(object sender, EventArgs e)
    {
        this.Top = FrmClass.Example_Play_Top;
        this.Left = FrmClass.Example_Play_Left + FrmClass.Example_Play_Width;
        Cla_FrmClass.FrmInitialize(this);
    }

    private void panel_Title_MouseDown(object sender, MouseEventArgs e)
    {
        FrmClass.CPoint = new Point(-e.X, -e.Y);
    }

    private void panel_Title_MouseMove(object sender, MouseEventArgs e)
    {
        FrmClass.Example_Assistant_AdhereTo = false;
        FrmClass.Example_Libretto_AdhereTo = false;
        Cla_FrmClass.FrmMove(this, e);
    }

    private void panel_Title_MouseUp(object sender, MouseEventArgs e)
    {
        Cla_FrmClass.FrmPlace(this);
    }
}

public partial class Frm_ListBox : Form
{
    public Frm_ListBox()
    {
        InitializeComponent();
    }

    #region  公共变量
    FrmClass Cla_FrmClass = new FrmClass();
    #endregion

    private void Frm_ListBox_Load(object sender, EventArgs e)
    {
        this.Left = FrmClass.Example_Play_Left;
        this.Top = FrmClass.Example_Play_Top + FrmClass.Example_Play_Height;
        Cla_FrmClass.FrmInitialize(this);
    }

    private void panel_Title_MouseDown(object sender, MouseEventArgs e)
    {
        FrmClass.CPoint = new Point(-e.X, -e.Y);
    }

    private void panel_Title_MouseMove(object sender, MouseEventArgs e)
    {
        FrmClass.Example_Assistant_AdhereTo = false;
        FrmClass.Example_List_AdhereTo = false;
        Cla_FrmClass.FrmMove(this, e);
    }

    private void panel_Title_MouseUp(object sender, MouseEventArgs e)
    {
        Cla_FrmClass.FrmPlace(this);
    }
}

public partial class Frm_Play : Form
{
    public Frm_Play()
    {
        InitializeComponent();
    }

    #region 公共变量

    FrmClass Cla_FrmClass = new FrmClass();
    public static Form F_List = new Form();
    public static Form F_Libretto = new Form();
    public static Form F_Screen = new Form();

    #endregion

    private void Frm_Play_Load(object sender, EventArgs e)
    {
        //窗体位置的初始化
        Cla_FrmClass.FrmInitialize(this);
    }

    private void panel_Title_MouseDown(object sender, MouseEventArgs e)
    {
        int Tem_Y = 0;
        if (e.Button == MouseButtons.Left) //按下的是否为鼠标左键
        {
            Cla_FrmClass.FrmBackCheck(); //检测各窗体是否连在一起
            Tem_Y = e.Y;
            FrmClass.FrmPoint = new Point(e.X, Tem_Y); //获取鼠标在窗体上的位置，用于磁性窗体
            FrmClass.CPoint = new Point(-e.X, -Tem_Y); //获取鼠标在屏幕上的位置，用于窗体的移动
            if (FrmClass.Example_List_AdhereTo) //如果与frm_ListBox窗体相连接
            {
                Cla_FrmClass.FrmDistanceJob(this, F_List); //计算窗体的距离差
                if (FrmClass.Example_Assistant_AdhereTo) //两个辅窗体是否连接在一起
                {
                    Cla_FrmClass.FrmDistanceJob(this, F_Libretto); //计算窗体的距离差
                }
            }

            if (FrmClass.Example_Libretto_AdhereTo) //如果与frm_Libretto窗体相连接
            {
                Cla_FrmClass.FrmDistanceJob(this, F_Libretto); //计算窗体的距离差
                if (FrmClass.Example_Assistant_AdhereTo) //两个辅窗体是否连接在一起
                {
                    Cla_FrmClass.FrmDistanceJob(this, F_List); //计算窗体的距离差
                }
            }
        }
    }

    private void panel_Title_MouseMove(object sender, MouseEventArgs e)
    {
        if (e.Button == MouseButtons.Left) //按下的是否为鼠标左键
        {
            Cla_FrmClass.FrmMove(this, e); //利用控件移动窗体
            if (FrmClass.Example_List_AdhereTo) //如果frm_ListBox窗体与主窗体连接
            {
                Cla_FrmClass.ManyFrmMove(this, e, F_List); //磁性窗体的移动
                Cla_FrmClass.FrmInitialize(F_List); //对frm_ListBox窗体的位置进行初始化
                if (FrmClass.Example_Assistant_AdhereTo) //如果两个子窗体连接在一起
                {
                    Cla_FrmClass.ManyFrmMove(this, e, F_Libretto);
                    Cla_FrmClass.FrmInitialize(F_Libretto);
                }
            }

            if (FrmClass.Example_Libretto_AdhereTo) //如果frm_Libretto窗体与主窗体连接
            {
                Cla_FrmClass.ManyFrmMove(this, e, F_Libretto);
                Cla_FrmClass.FrmInitialize(F_Libretto);
                if (FrmClass.Example_Assistant_AdhereTo)
                {
                    Cla_FrmClass.ManyFrmMove(this, e, F_List);
                    Cla_FrmClass.FrmInitialize(F_List);
                }
            }

            Cla_FrmClass.FrmInitialize(this);
        }
    }

    private void panel_Title_MouseUp(object sender, MouseEventArgs e)
    {
        Cla_FrmClass.FrmPlace(this);
    }

    private void Frm_Play_Shown(object sender, EventArgs e)
    {
        //显示列表窗体
        F_List = new Frm_ListBox();
        F_List.ShowInTaskbar = false;
        FrmClass.Example_ListShow = true;
        F_List.Show();
        //显示歌词窗体
        F_Libretto = new Frm_Libretto();
        F_Libretto.ShowInTaskbar = false;
        FrmClass.Example_LibrettoShow = true;
        F_Libretto.Show();
        F_Libretto.Left = this.Left + this.Width;
        F_Libretto.Top = this.Top;
        //各窗体位置的初始化
        Cla_FrmClass.FrmInitialize(F_List);
        Cla_FrmClass.FrmInitialize(F_Libretto);
    }

    private void panel_Close_Click(object sender, EventArgs e)
    {
        F_List.Close();
        F_List.Dispose();
        F_Libretto.Close();
        F_Libretto.Dispose();
        F_Screen.Close();
        F_Screen.Dispose();
        this.Close();
    }

    private void panel_Title_Click(object sender, EventArgs e)
    {
        F_List.Focus();
        F_Libretto.Focus();
        this.Focus();
    }
}

class FrmClass
{
    #region 磁性窗体-公共变量

    //记录窗体的隐藏与显示
    public static bool Example_ListShow = false;
    public static bool Example_LibrettoShow = false;
    public static bool Example_ScreenShow = false;

    //记录鼠标的当前位置
    public static Point CPoint; //添加命名空间using System.Drawing;
    public static Point FrmPoint;
    public static int Example_FSpace = 10; //设置窗体间的距离

    //Frm_Play窗体的位置及大小
    public static int Example_Play_Top = 0;
    public static int Example_Play_Left = 0;
    public static int Example_Play_Width = 0;
    public static int Example_Play_Height = 0;
    public static bool Example_Assistant_AdhereTo = false; //辅助窗体是否磁性在一起

    //Frm_ListBos窗体的位置及大小
    public static int Example_List_Top = 0;
    public static int Example_List_Left = 0;
    public static int Example_List_Width = 0;
    public static int Example_List_Height = 0;
    public static bool Example_List_AdhereTo = false; //辅助窗体是否与主窗体磁性在一起

    //Frm_Libretto窗体的位置及大小
    public static int Example_Libretto_Top = 0;
    public static int Example_Libretto_Left = 0;
    public static int Example_Libretto_Width = 0;
    public static int Example_Libretto_Height = 0;
    public static bool Example_Libretto_AdhereTo = false; //辅助窗体是否与主窗体磁性在一起

    //窗体之间的距离差
    public static int Example_List_space_Top = 0;
    public static int Example_List_space_Left = 0;
    public static int Example_Libretto_space_Top = 0;
    public static int Example_Libretto_space_Left = 0;

    #endregion

    #region 检测各窗体是否连接在一起

    /// <summary>
    /// 检测各窗体是否连接在一起
    /// </summary>
    public void FrmBackCheck()
    {
        bool Tem_Magnetism = false;
        //Frm_ListBos与主窗体
        Tem_Magnetism = false;
        if ((Example_Play_Top - Example_List_Top) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Left - Example_List_Left) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Left - Example_List_Left - Example_List_Width) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Left - Example_List_Left + Example_List_Width) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Top - Example_List_Top - Example_List_Height) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Top - Example_List_Top + Example_List_Height) == 0)
            Tem_Magnetism = true;
        if (Tem_Magnetism)
            Example_List_AdhereTo = true;

        //Frm_Libretto与主窗体
        Tem_Magnetism = false;
        if ((Example_Play_Top - Example_Libretto_Top) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Left - Example_Libretto_Left) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Left - Example_Libretto_Left - Example_Libretto_Width) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Left - Example_Libretto_Left + Example_Libretto_Width) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Top - Example_Libretto_Top - Example_Libretto_Height) == 0)
            Tem_Magnetism = true;
        if ((Example_Play_Top - Example_Libretto_Top + Example_Libretto_Height) == 0)
            Tem_Magnetism = true;
        if (Tem_Magnetism)
            Example_Libretto_AdhereTo = true;

        //两个辅窗体
        Tem_Magnetism = false;
        if ((Example_List_Top - Example_Libretto_Top) == 0)
            Tem_Magnetism = true;
        if ((Example_List_Left - Example_Libretto_Left) == 0)
            Tem_Magnetism = true;
        if ((Example_List_Left - Example_Libretto_Left - Example_Libretto_Width) == 0)
            Tem_Magnetism = true;
        if ((Example_List_Left - Example_Libretto_Left + Example_Libretto_Width) == 0)
            Tem_Magnetism = true;
        if ((Example_List_Top - Example_Libretto_Top - Example_Libretto_Height) == 0)
            Tem_Magnetism = true;
        if ((Example_List_Top - Example_Libretto_Top + Example_Libretto_Height) == 0)
            Tem_Magnetism = true;
        if (Tem_Magnetism)
            Example_Assistant_AdhereTo = true;
    }

    #endregion

    #region 利用窗体上的控件移动窗体

    /// <summary>
    /// 利用控件移动窗体
    /// </summary>
    /// <param Frm="Form">窗体</param>
    /// <param e="MouseEventArgs">控件的移动事件</param>
    public void FrmMove(Form Frm, MouseEventArgs e) //Form或MouseEventArgs添加命名空间using System.Windows.Forms;
    {
        if (e.Button == MouseButtons.Left)
        {
            Point myPosittion = Control.MousePosition; //获取当前鼠标的屏幕坐标
            myPosittion.Offset(CPoint.X, CPoint.Y); //重载当前鼠标的位置
            Frm.DesktopLocation = myPosittion; //设置当前窗体在屏幕上的位置
        }
    }

    #endregion

    #region 计算窗体之间的距离差

    /// <summary>
    /// 计算窗体之间的距离差
    /// </summary>
    /// <param Frm="Form">窗体</param>
    /// <param Follow="Form">跟随窗体</param>
    public void FrmDistanceJob(Form Frm, Form Follow)
    {
        switch (Follow.Name)
        {
            case "Frm_ListBox":
            {
                Example_List_space_Top = Follow.Top - Frm.Top;
                Example_List_space_Left = Follow.Left - Frm.Left;
                break;
            }
            case "Frm_Libretto":
            {
                Example_Libretto_space_Top = Follow.Top - Frm.Top;
                Example_Libretto_space_Left = Follow.Left - Frm.Left;
                break;
            }
        }
    }

    #endregion

    #region 磁性窗体的移动

    /// <summary>
    /// 磁性窗体的移动
    /// </summary>
    /// <param Frm="Form">窗体</param>
    /// <param e="MouseEventArgs">控件的移动事件</param>
    /// <param Follow="Form">跟随窗体</param>
    public void
        ManyFrmMove(Form Frm, MouseEventArgs e, Form Follow) //Form或MouseEventArgs添加命名空间using System.Windows.Forms;
    {
        if (e.Button == MouseButtons.Left)
        {
            int Tem_Left = 0;
            int Tem_Top = 0;
            Point myPosittion = Control.MousePosition; //获取当前鼠标的屏幕坐标
            switch (Follow.Name)
            {
                case "Frm_ListBox":
                {
                    Tem_Top = Example_List_space_Top - FrmPoint.Y;
                    Tem_Left = Example_List_space_Left - FrmPoint.X;
                    break;
                }
                case "Frm_Libretto":
                {
                    Tem_Top = Example_Libretto_space_Top - FrmPoint.Y;
                    Tem_Left = Example_Libretto_space_Left - FrmPoint.X;
                    break;
                }
            }

            myPosittion.Offset(Tem_Left, Tem_Top);
            Follow.DesktopLocation = myPosittion;
        }
    }

    #endregion

    #region 对窗体的位置进行初始化

    /// <summary>
    /// 对窗体的位置进行初始化
    /// </summary>
    /// <param Frm="Form">窗体</param>
    public void FrmInitialize(Form Frm)
    {
        switch (Frm.Name)
        {
            case "Frm_Play":
            {
                Example_Play_Top = Frm.Top;
                Example_Play_Left = Frm.Left;
                Example_Play_Width = Frm.Width;
                Example_Play_Height = Frm.Height;
                break;
            }
            case "Frm_ListBox":
            {
                Example_List_Top = Frm.Top;
                Example_List_Left = Frm.Left;
                Example_List_Width = Frm.Width;
                Example_List_Height = Frm.Height;
                break;
            }
            case "Frm_Libretto":
            {
                Example_Libretto_Top = Frm.Top;
                Example_Libretto_Left = Frm.Left;
                Example_Libretto_Width = Frm.Width;
                Example_Libretto_Height = Frm.Height;
                break;
            }
        }
    }

    #endregion

    #region 存储各窗体的当前信息

    /// <summary>
    /// 存储各窗体的当前信息
    /// </summary>
    /// <param Frm="Form">窗体</param>
    /// <param e="MouseEventArgs">控件的移动事件</param>
    public void FrmPlace(Form Frm)
    {
        FrmInitialize(Frm);
        FrmMagnetism(Frm);
    }

    #endregion

    #region 窗体的磁性设置

    /// <summary>
    /// 窗体的磁性设置
    /// </summary>
    /// <param Frm="Form">窗体</param>
    public void FrmMagnetism(Form Frm)
    {
        if (Frm.Name != "Frm_Play")
        {
            FrmMagnetismCount(Frm, Example_Play_Top, Example_Play_Left, Example_Play_Width, Example_Play_Height,
                "Frm_Play");
        }

        if (Frm.Name != "Frm_ListBos")
        {
            FrmMagnetismCount(Frm, Example_List_Top, Example_List_Left, Example_List_Width, Example_List_Height,
                "Frm_ListBos");
        }

        if (Frm.Name != "Frm_Libratto")
        {
            FrmMagnetismCount(Frm, Example_Libretto_Top, Example_Libretto_Left, Example_Libretto_Width,
                Example_Libretto_Height, "Frm_Libratto");
        }

        FrmInitialize(Frm);
    }

    #endregion

    #region 磁性窗体的计算

    /// <summary>
    /// 磁性窗体的计算
    /// </summary>
    /// <param Frm="Form">窗体</param>
    /// <param e="MouseEventArgs">控件的移动事件</param>
    public void FrmMagnetismCount(Form Frm, int top, int left, int width, int height, string Mforms)
    {
        bool Tem_Magnetism = false; //判断是否有磁性发生
        string Tem_MainForm = ""; //临时记录主窗体
        string Tem_AssistForm = ""; //临时记录辅窗体

        //上面进行磁性窗体
        if ((Frm.Top + Frm.Height - top) <= Example_FSpace && (Frm.Top + Frm.Height - top) >= -Example_FSpace)
        {
            //当一个主窗体不包含辅窗体时
            if ((Frm.Left >= left && Frm.Left <= (left + width)) ||
                ((Frm.Left + Frm.Width) >= left && (Frm.Left + Frm.Width) <= (left + width)))
            {
                Frm.Top = top - Frm.Height;
                if ((Frm.Left - left) <= Example_FSpace && (Frm.Left - left) >= -Example_FSpace)
                    Frm.Left = left;
                Tem_Magnetism = true;
            }

            //当一个主窗体包含辅窗体时
            if (Frm.Left <= left && (Frm.Left + Frm.Width) >= (left + width))
            {
                Frm.Top = top - Frm.Height;
                if ((Frm.Left - left) <= Example_FSpace && (Frm.Left - left) >= -Example_FSpace)
                    Frm.Left = left;
                Tem_Magnetism = true;
            }
        }

        //下面进行磁性窗体
        if ((Frm.Top - (top + height)) <= Example_FSpace && (Frm.Top - (top + height)) >= -Example_FSpace)
        {
            //当一个主窗体不包含辅窗体时
            if ((Frm.Left >= left && Frm.Left <= (left + width)) ||
                ((Frm.Left + Frm.Width) >= left && (Frm.Left + Frm.Width) <= (left + width)))
            {
                Frm.Top = top + height;
                if ((Frm.Left - left) <= Example_FSpace && (Frm.Left - left) >= -Example_FSpace)
                    Frm.Left = left;
                Tem_Magnetism = true;
            }

            //当一个主窗体包含辅窗体时
            if (Frm.Left <= left && (Frm.Left + Frm.Width) >= (left + width))
            {
                Frm.Top = top + height;
                if ((Frm.Left - left) <= Example_FSpace && (Frm.Left - left) >= -Example_FSpace)
                    Frm.Left = left;
                Tem_Magnetism = true;
            }
        }

        //左面进行磁性窗体
        if ((Frm.Left + Frm.Width - left) <= Example_FSpace && (Frm.Left + Frm.Width - left) >= -Example_FSpace)
        {
            //当一个主窗体不包含辅窗体时
            if ((Frm.Top > top && Frm.Top <= (top + height)) ||
                ((Frm.Top + Frm.Height) >= top && (Frm.Top + Frm.Height) <= (top + height)))
            {
                Frm.Left = left - Frm.Width;
                if ((Frm.Top - top) <= Example_FSpace && (Frm.Top - top) >= -Example_FSpace)
                    Frm.Top = top;
                Tem_Magnetism = true;
            }

            //当一个主窗体包含辅窗体时
            if (Frm.Top <= top && (Frm.Top + Frm.Height) >= (top + height))
            {
                Frm.Left = left - Frm.Width;
                if ((Frm.Top - top) <= Example_FSpace && (Frm.Top - top) >= -Example_FSpace)
                    Frm.Top = top;
                Tem_Magnetism = true;
            }
        }

        //右面进行磁性窗体
        if ((Frm.Left - (left + width)) <= Example_FSpace && (Frm.Left - (left + width)) >= -Example_FSpace)
        {
            //当一个主窗体不包含辅窗体时
            if ((Frm.Top > top && Frm.Top <= (top + height)) ||
                ((Frm.Top + Frm.Height) >= top && (Frm.Top + Frm.Height) <= (top + height)))
            {
                Frm.Left = left + width;
                if ((Frm.Top - top) <= Example_FSpace && (Frm.Top - top) >= -Example_FSpace)
                    Frm.Top = top;
                Tem_Magnetism = true;
            }

            //当一个主窗体包含辅窗体时
            if (Frm.Top <= top && (Frm.Top + Frm.Height) >= (top + height))
            {
                Frm.Left = left + width;
                if ((Frm.Top - top) <= Example_FSpace && (Frm.Top - top) >= -Example_FSpace)
                    Frm.Top = top;
                Tem_Magnetism = true;
            }
        }

        if (Frm.Name == "Frm_Play")
            Tem_MainForm = "Frm_Play";
        else
            Tem_AssistForm = Frm.Name;
        if (Mforms == "Frm_Play")
            Tem_MainForm = "Frm_Play";
        else
            Tem_AssistForm = Mforms;
        if (Tem_MainForm == "")
        {
            Example_Assistant_AdhereTo = Tem_Magnetism;
        }
        else
        {
            switch (Tem_AssistForm)
            {
                case "Frm_ListBos":
                    Example_List_AdhereTo = Tem_Magnetism;
                    break;
                case "Frm_Libratto":
                    Example_Libretto_AdhereTo = Tem_Magnetism;
                    break;
            }
        }
    }

    #endregion

    #region 恢复窗体的初始大小

    /// <summary>
    /// 恢复窗体的初始大小(当松开鼠标时，如果窗体的大小小于300*200,恢复初始状态)
    /// </summary>
    /// <param Frm="Form">窗体</param>
    public void FrmScreen_FormerlySize(Form Frm, int PWidth, int PHeight)
    {
        if (Frm.Width < PWidth || Frm.Height < PHeight)
        {
            Frm.Width = PWidth;
            Frm.Height = PHeight;
            //Example_Size = false;
        }
    }

    #endregion
}

static class Program
{
    /// <summary>
    /// 应用程序的主入口点。
    /// </summary>
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        Application.Run(new Frm_Play());
    }
}

到此这篇关于基于C#实现磁性吸附窗体的文章就介绍到这了,更多相关C#磁性吸附窗体内容请搜索我们以前的文章或继续浏览下面的相关文章希望大家以后多多支持我们！