前提

入行已经7,8年了，一直想做一套漂亮点的自定义控件，于是就有了本系列文章。

GitHub：https://github.com/kwwwvagaa/NetWinformControl

码云：https://gitee.com/kwwwvagaa/net_winform_custom_control.git

如果觉得写的还行，请点个 star 支持一下吧

欢迎前来交流探讨： 企鹅群568015492 

麻烦博客下方点个【推荐】，谢谢

NuGet

Install-Package HZH_Controls

目录

https://www.cnblogs.com/bfyx/p/11364884.html

用处及效果

准备工作

依然是GDI+画的，如果不了解可以百度下先

开始

添加一个枚举，用以控制移动方向

  public enum RollStyle
    {
        LeftToRight,
        RightToLeft,
        BackAndForth
    }

 

添加一个类UCRollText，继承UserControl

添加几个控制属性

 public override Font Font
        {
            get
            {
                return base.Font;
            }
            set
            {
                base.Font = value;
                if (!string.IsNullOrEmpty(Text))
                {
                    Graphics g = this.CreateGraphics();
                    var size = g.MeasureString(Text, this.Font);
                    rectText = new Rectangle(0, (this.Height - rectText.Height) / 2 + 1, (int)size.Width, (int)size.Height);
                    rectText.Y = (this.Height - rectText.Height) / 2 + 1;
                }
            }
        }

        public override Color ForeColor
        {
            get
            {
                return base.ForeColor;
            }
            set
            {
                base.ForeColor = value;
            }
        }

        public override string Text
        {
            get
            {
                return base.Text;
            }
            set
            {
                base.Text = value;
                if (!string.IsNullOrEmpty(value))
                {
                    Graphics g = this.CreateGraphics();
                    var size = g.MeasureString(value, this.Font);
                    rectText = new Rectangle(0, (this.Height - rectText.Height) / 2 + 1, (int)size.Width, (int)size.Height);
                }
                else
                {
                    rectText = Rectangle.Empty;
                }
            }
        }

        private RollStyle _RollStyle = RollStyle.LeftToRight;

        [Description("滚动样式"), Category("自定义")]
        public RollStyle RollStyle
        {
            get { return _RollStyle; }
            set
            {
                _RollStyle = value;
                switch (value)
                {
                    case RollStyle.LeftToRight:
                        m_intdirection = 1;
                        break;
                    case RollStyle.RightToLeft:
                        m_intdirection = -1;
                        break;
                }
            }
        }

        private int _moveStep = 5;

        private int _moveSleepTime = 100;

        [Description("每次滚动间隔时间，越小速度越快"), Category("自定义")]
        public int MoveSleepTime
        {
            get { return _moveSleepTime; }
            set
            {
                if (value <= 0)
                    return;

                _moveSleepTime = value;
                m_timer.Interval = value;
            }
        }

        int m_intdirection = 1;

        Rectangle rectText;
        Timer m_timer;

构造函数处理一些事情

 public UCRollText()
        {
            this.SetStyle(ControlStyles.AllPaintingInWmPaint, true);
            this.SetStyle(ControlStyles.DoubleBuffer, true);
            this.SetStyle(ControlStyles.ResizeRedraw, true);
            this.SetStyle(ControlStyles.Selectable, true);
            this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
            this.SetStyle(ControlStyles.UserPaint, true);

            this.SizeChanged += UCRollText_SizeChanged;
            this.Size = new Size(450, 30);
            Text = "滚动文字";
            m_timer = new Timer();
            m_timer.Interval = 100;
            m_timer.Tick += m_timer_Tick;
            this.Load += UCRollText_Load;
            this.VisibleChanged += UCRollText_VisibleChanged;
            this.ForeColor = Color.FromArgb(255, 77, 59);
            if (rectText != Rectangle.Empty)
            {
                rectText.Y = (this.Height - rectText.Height) / 2 + 1;
            }
        }

加载的时候处理一下初始位置

 void UCRollText_Load(object sender, EventArgs e)
        {
            if (_RollStyle == HZH_Controls.Controls.Rol