protectedoverridevoidOnPaint(PaintEventArgse){//创建线性渐变画刷LinearGradientBrushbrush=newLinearGradientBrush(ClientRectangle

PictureBox{protectedoverridevoidOnCreateControl(){GraphicsPathgp=newGraphicsPath();gp.AddEllipse(this.ClientRectangle

1、panel容器（1）边框默认宽度为1pixel，即该控件对应的工作区的矩形区域ClientRectangle比控件设定值上、下、左、右边界各小1pixel。

PaintEventArgse){DataGridViewdataGridView=senderasDataGridView;ControlPaint.DrawBorder(e.Graphics,dataGridView.ClientRectangle

privatevoidpanel1_Paint(objectsender,PaintEventArgse){ControlPaint.DrawBorder(e.Graphics,this.panel1.ClientRectangle

这样总不会消失了privatevoidbutton2_Click(objectsender,EventArgse){Bitmapbmp=newBitmap(this.pictureBox1.ClientRectangle.Width

System.Drawing.Drawing2D.GraphicsPathbtnPath=newSystem.Drawing.Drawing2D.GraphicsPath();System.Drawing.RectanglenewRectangle=btn.ClientRectangle

画图";save.Filter="(.jpg)|*.jpg";if(save.ShowDialog()==DialogResult.OK){Bitmapbit=newBitmap(PictureBox.ClientRectangle.Width

MessageBox.Show("当前窗体标题栏高度"+(this.Height-this.ClientRectangle.Height).ToString());//获得当前窗体标题栏高度   ClientRectangle

; {3   LinearGradientBrush b = new LinearGradientBrush(this.ClientRectangle

PaintEventArgs e) { ControlPaint.DrawBorder(e.Graphics, this.panel1.ClientRectangle

画速度曲线 Graphics g = e.Graphics; g.DrawLine(Pens.White, 40 , picChart.ClientRectangle.Height

Graphics g = e.Graphics;LinearGradientBrush brush = new LinearGradientBrush(this.ClientRectangle,Color.SkyBlue

       最近学习制作WinForm控件，自己动手写控件的时候才发现System.Windows.Forms.Control 竟然没有提供默认的border绘制。记得以前用API做控件的时候，只需要设置空间窗口的WS_BORDER 风格就可以。遍寻无方，只有自己绘制了，这里有出现一个，如果border在客户区，那么在OnPa

Graphics g = this.CreateGraphics(); g.FillRectangle(Brushes.White, this.ClientRectangle

Graphicsg=e.Graphics;g.SmoothingMode=SmoothingMode.AntiAlias;g.FillRectangle(Brushes.White,this.ClientRectangle

C#代码 MessageBox.Show("当前窗体标题栏高度"+(this.Height - this.ClientRectangle.Height).ToString());//获得当前窗体标题栏高度

privatevoidpanel4_Paint(objectsender,PaintEventArgse) { ControlPaint.DrawBorder(e.Graphics, panel4.ClientRectangle

这样总不会消失了privatevoidbutton2_Click(objectsender,EventArgse) { Bitmapbmp=newBitmap(this.pictureBox1.ClientRectangle.Width

2、判断鼠标是否在某个控件上Rectanglerectangle=控件名称.RectangleToClient(this.ClientRectangle);i

Graphicsg=e.Graphics;ColorFColor=Color.Blue;ColorTColor=Color.Brown;Brushb=newLinearGradientBrush(this.ClientRectangle

Graphicsg=e.Graphics;ColorFColor=Color.Blue;ColorTColor=Color.Brown;Brushb=newLinearGradientBrush(this.ClientRectangle

MessageBox.Show("当前窗体标题栏高度"+(this.Height-this.ClientRectangle.Height).ToString());//获得当前窗体标题栏高度   ClientRectangle

protectedoverridevoidOnPaint(PaintEventArgse){Graphicsg=e.Graphics;using(Penbluepen=newPen(Color.Red,1)){if(ClientRectangle.Height

           Graphicsg=e.Graphics;           using(Penbluepen=newPen(Color.Red,1))           {               if(ClientRectangle.Height

MessageBox.Show("当前窗体标题栏高"+(this.Height - this.ClientRectangle.Height).ToString());//当前窗体标题栏高度

MessageBox.Show("当前窗体标题栏高"+(this.Height - this.ClientRectangle.Height).ToString());//当前窗体标题栏高度

实心矩形Graphicsg=pictureBoxRet1.CreateGraphics();Rectanglerect=newRectangle(pictureBoxRet1.ClientRectangle.X

MessageBox.Show("当前窗体标题栏高度"+(this.Height - this.ClientRectangle.Height).ToString());//获得当前窗体标题栏高度

MessageBox.Show("当前窗体标题栏高度"+(this.Height - this.ClientRectangle.Height).ToString());//获得当前窗体标题栏高度

MessageBox.Show("当前窗体标题栏高度"+(this.Height - this.ClientRectangle.Height).ToString());//获得当前窗体标题栏高度

this.listView1;          lv.Left=0;          lv.Top=0;          lv.Width=700;          lv.Height=this.ClientRectangle.Hei

objectsender,System.Windows.Forms.PaintEventArgse)  {   Graphicsg=this.CreateGraphics();   Rectanglerect=this.ClientRectangle