有些时候我们做的程序需要进度条，而vs提供的控件不是我们想要的。先看效果图：

进度条闪烁动画，当然背景可设为Transparent

之前想手绘进度条线条的，结果控件运行时会闪烁，所以直接用了panel控件

源码：

[DefaultEvent("ProgressClick")] [ToolboxBitmap(typeof(TrackBar))] public partial class ProcessBar : UserControl { public ProcessBar() { //InitializeComponent(); //this.SetStyle(ControlStyles.UserPaint, true); //this.SetStyle(ControlStyles.AllPaintingInWmPaint, true); //this.SetStyle(ControlStyles.DoubleBuffer, true); } private int locationX=0; [Description("单击时X的坐标")] public int LocationX { get { return locationX; } } private int current = 0; [Description("当前进度")] public int Current { get { return current; } set { if (value > 232 || value < 0) return; current = value; panelCurrent.Size = new Size(value, 1); picture.Location = new Point(value - 4, -3); Invalidate(); } } private bool isPlay = false; [Description("是否播放")] public bool IsPlay { get { return isPlay; } set { isPlay = value; tmrCurrent.Enabled = isPlay; Invalidate(); } } public delegate void MouseHandle(object sender,EventArgs e); [Description("点下鼠标")] public event MouseHandle BarMouseDown; int picturetype = 0; private void tmrCurrent_Tick(object sender, EventArgs e) { if (picturetype == 0) { picture.Image = Properties.Resources.play_slider_thumb; picturetype = 1; } else { picture.Image = Properties.Resources.play_slider_thumb_animate; picturetype = 0; } GraphicsPath g = subGraphicsPath(picture.Image); if (g == null) return; picture.Region = new Region(g); } private unsafe static GraphicsPath subGraphicsPath(Image img) { if (img == null) return null; // 建立GraphicsPath, 给我们的位图路径计算使用 GraphicsPath g = new GraphicsPath(FillMode.Alternate); Bitmap bitmap = new Bitmap(img); int width = bitmap.Width; int height = bitmap.Height; BitmapData bmData = bitmap.LockBits(new Rectangle(0, 0, width, height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb); byte* p = (byte*)bmData.Scan0; int offset = bmData.Stride - width * 3; int p0, p1, p2; // 记录左上角0，0座标的颜色值 p0 = p[0]; p1 = p[1]; p2 = p[2]; int start = -1; // 行座标 ( Y col ) for (int Y = 0; Y < height; Y++) { // 列座标 ( X row ) for (int X = 0; X < width; X++) { if (start == -1 && (p[0] != p0 || p[1] != p1 || p[2] != p2)) //如果 之前的点没有不透明 且 不透明 { start = X; //记录这个点 } else if (start > -1 && (p[0] == p0 && p[1] == p1 && p[2] == p2)) //如果 之前的点是不透明 且 透明 { g.AddRectangle(new Rectangle(start, Y, X - start, 1)); //添加之前的矩形到 start = -1; } if (X == width - 1 && start > -1) //如果 之前的点是不透明 且 是最后一个点 { g.AddRectangle(new Rectangle(start, Y, X - start + 1, 1)); //添加之前的矩形到 start = -1; } p += 3; //下一个内存地址 } p += offset; } bitmap.UnlockBits(bmData); bitmap.Dispose(); // 返回计算出来的不透明图片路径 return g; } private void panelTotal_MouseDown(object sender, MouseEventArgs e) { Current = e.Location.X; locationX = e.Location.X; if (BarMouseDown != null) { BarMouseDown.Invoke(sender, e); } } private void panelCurrent_MouseDown(object sender, MouseEventArgs e) { Current = e.Location.X; locationX = e.Location.X; if (BarMouseDown != null) { BarMouseDown.Invoke(sender, e); } } }

用到的素材：

直接右键另存为图片，之所以用黑色背景是因为图片是白色的看不见，不用多说了。

提示：这里用到了unsafe关键字，需要设置项目的属性-----允许运行不安全的代码，没有设置的同学不要以为程序错了