如何停止闪烁的C#winforms
我有一个程序，基本上就像一个油漆应用程序。然而，我的程序有一些闪烁的问题。我的代码中有以下代码行（应该消除闪烁，但不会）： 我的代码（减去形状的超类和子类）如下所示：如何停止闪烁的C#winforms,c#,drawing,C#,Drawing,我有一个程序，基本上就像一个油漆应用程序。然而，我的程序有一些闪烁的问题。我的代码中有以下代码行（应该消除闪烁，但不会）： 我的代码（减去形状的超类和子类）如下所示： using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using Syst
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Paint
{
public partial class Paint : Form
{
private Point startPoint;
private Point endPoint;
private Rectangle rect = new Rectangle();
private Int32 brushThickness = 0;
private Boolean drawSPaint = false;
private List<Shapes> listOfShapes = new List<Shapes>();
private Color currentColor;
private Color currentBoarderColor;
private Boolean IsShapeRectangle = false;
private Boolean IsShapeCircle = false;
private Boolean IsShapeLine = false;
public SPaint()
{
InitializeComponent();
this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.DoubleBuffer, true);
currentColor = Color.Red;
currentBoarderColor = Color.DodgerBlue;
IsShapeRectangle = true;
}
private void panelArea_Paint(object sender, PaintEventArgs e)
{
Graphics g = panelArea.CreateGraphics();
if (drawSPaint == true)
{
Pen p = new Pen(Color.Blue);
p.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
if (IsShapeRectangle == true)
{
g.DrawRectangle(p, rect);
}
else if (IsShapeCircle == true)
{
g.DrawEllipse(p, rect);
}
else if (IsShapeLine == true)
{
g.DrawLine(p, startPoint, endPoint);
}
}
foreach (Shapes shape in listOfShapes)
{
shape.Draw(g);
}
}
private void panelArea_MouseDown(object sender, MouseEventArgs e)
{
startPoint.X = e.X;
startPoint.Y = e.Y;
drawSPaint = true;
}
private void panelArea_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
if (e.X > startPoint.X)
{
rect.X = startPoint.X;
rect.Width = e.X - startPoint.X;
}
else
{
rect.X = e.X;
rect.Width = startPoint.X - e.X;
}
if (e.Y > startPoint.Y)
{
rect.Y = startPoint.Y;
rect.Height = e.Y - startPoint.Y;
}
else
{
rect.Y = e.Y;
rect.Height = startPoint.Y - e.Y;
}
panelArea.Invalidate();
}
}
private void panelArea_MouseUp(object sender, MouseEventArgs e)
{
endPoint.X = e.X;
endPoint.Y = e.Y;
drawSPaint = false;
if (rect.Width > 0 && rect.Height > 0)
{
if (IsShapeRectangle == true)
{
listOfShapes.Add(new TheRectangles(rect, currentColor, currentBoarderColor, brushThickness));
}
else if (IsShapeCircle == true)
{
listOfShapes.Add(new TheCircles(rect, currentColor, currentBoarderColor, brushThickness));
}
else if (IsShapeLine == true)
{
listOfShapes.Add(new TheLines(startPoint, endPoint, currentColor, currentBoarderColor, brushThickness));
}
panelArea.Invalidate();
}
}
private void rectangleToolStripMenuItem_Click(object sender, EventArgs e)
{
IsShapeRectangle = true;
IsShapeCircle = false;
IsShapeLine = false;
}
private void ellipseToolStripMenuItem_Click(object sender, EventArgs e)
{
IsShapeRectangle = false;
IsShapeCircle = true;
IsShapeLine = false;
}
private void lineToolStripMenuItem_Click(object sender, EventArgs e)
{
IsShapeCircle = false;
IsShapeRectangle = false;
IsShapeLine = true;
}
private void ThicknessLevel0_Click(object sender, EventArgs e)
{
brushThickness = 0;
}
private void ThicknessLevel2_Click(object sender, EventArgs e)
{
brushThickness = 2;
}
private void ThicknessLevel4_Click(object sender, EventArgs e)
{
brushThickness = 4;
}
private void ThicknessLevel6_Click(object sender, EventArgs e)
{
brushThickness = 6;
}
private void ThicknessLevel8_Click(object sender, EventArgs e)
{
brushThickness = 8;
}
private void ThicknessLevel10_Click(object sender, EventArgs e)
{
brushThickness = 10;
}
private void ThicknessLevel12_Click(object sender, EventArgs e)
{
brushThickness = 12;
}
private void ThicknessLevel14_Click(object sender, EventArgs e)
{
brushThickness = 14;
}
private void FillColour_Click(object sender, EventArgs e)
{
ColorDialog fillColourDialog = new ColorDialog();
fillColourDialog.ShowDialog();
currentColor = fillColourDialog.Color;
panelArea.Invalidate();
}
private void button1_Click(object sender, EventArgs e)
{
ColorDialog fillColourDialog = new ColorDialog();
fillColourDialog.ShowDialog();
currentBoarderColor = fillColourDialog.Color;
panelArea.Invalidate();
}
}
}
使用系统；
使用System.Collections.Generic；
使用系统组件模型；
使用系统数据；
使用系统图；
使用System.Linq；
使用系统文本；
使用System.Windows.Forms；
名称空间绘制
{
公共部分类油漆：表格
{
专用点起始点；
专用点端点；
私有矩形rect=新矩形（）；
私有Int32刷厚=0；
私有布尔drawSPaint=false；
私有列表listOfShapes=新列表（）；
私人色彩；
私人色彩；
私有布尔值IsShapeRectangle=false；
私有布尔值IsShapeCircle=false；
私有布尔IsShapeLine=false；
公共服务
{
初始化组件（）；
this.SetStyle（ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.DoubleBuffer，true）；
currentColor=Color.Red；
currentBoarderColor=Color.DodgerBlue；
IsShapeRectangle=真；
}
私有空白面板区域_Paint（对象发送器、PaintEventArgs e）
{
Graphics g=panelArea.CreateGraphics（）；
if（drawSPaint==true）
{
钢笔p=新钢笔（颜色为蓝色）；
p、 DashStyle=System.Drawing.Drawing2D.DashStyle.Dash；
if（IsShapeRectangle==true）
{
g、 DrawRectangle（p，rect）；
}
else if（IsShapeCircle==true）
{
g、 抽屉式（p，rect）；
}
else if（IsShapeLine==真）
{
g、 绘制线（p、起点、终点）；
}
}
foreach（形状列表中的形状）
{
形状绘制（g）；
}
}
专用空白面板区域\u鼠标向下（对象发送器，鼠标指针e）
{
起点X=e.X；
起始点Y=e.Y；
drawSPaint=true；
}
专用空白面板区域\鼠标移动（对象发送器，鼠标目标e）
{
if（e.Button==System.Windows.Forms.MouseButtons.Left）
{
如果（e.X>startPoint.X）
{
rect.X=起始点.X；
矩形宽度=e.X-起始点.X；
}
其他的
{
rect.X=e.X；
矩形宽度=起点X-e.X；
}
如果（e.Y>起始点Y）
{
rect.Y=起始点.Y；
垂直高度=e.Y-起始点.Y；
}
其他的
{
矩形Y=e.Y；
垂直高度=起始点Y-e.Y；
}
panelArea.Invalidate（）；
}
}
专用空白面板区域\鼠标（对象发送器，鼠标目标e）
{
终点X=e.X；
终点Y=e.Y；
drawSPaint=false；
如果（矩形宽度>0&&矩形高度>0）
{
if（IsShapeRectangle==true）
{
添加（新的矩形（rect、currentColor、currentBoarderColor、brushThickness））；
}
else if（IsShapeCircle==true）
{
添加（新的圆（rect、currentColor、currentBoarderColor、brushThickness））；
}
else if（IsShapeLine==真）
{
添加（新的线（起点、终点、当前颜色、当前板颜色、笔刷厚度））；
}
panelArea.Invalidate（）；
}
}
私有无效矩形工具条带菜单项单击（对象发送方，事件参数e）
{
IsShapeRectangle=真；
IsShapeCircle=假；
IsShapeLine=假；
}
私有void ellipseToolStripMenuItem\u单击（对象发送方，事件参数e）
{
IsShapeRectangle=假；
IsShapeCircle=true；
IsShapeLine=假；
}
私有void lineToolStripMenuItem\u单击（对象发送者，事件参数e）
{
IsShapeCircle=假；
IsShapeRectangle=假；
IsShapeLine=真；
}
私有空心厚度级别0\u单击（对象发送方，事件参数e）
{
刷厚=0；
}
私有空心厚度级别2_单击（对象发送方，事件参数e）
{
刷厚=2；
}
私有空心厚度级别4_单击（对象发送者，事件参数e）
{
刷厚=4；
}
私有空心厚度级别6_单击（对象发送方，事件参数e）
{
刷厚=6；
}
私有空心厚度级别8_单击（对象发送方，事件参数e）
{
刷厚=8；
}
私有空心厚度级别10_单击（对象发送者，事件参数e）
{
刷厚=10；
}
私有空心厚度级别12_单击（对象发送方，事件参数e）
{
刷厚=12；
}
私有空心厚度级别14_单击（对象发送方，事件参数e）
{
刷厚=14；
}
私有无效填充颜色单击（对象发送者，事件参数e）
{
ColorDialog FillColorDialog=新建ColorDialog（）；
fillcolorDialog.ShowDialog（）；
currentColor=fillColourDialog.Colo
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
namespace Paint
{
public partial class Paint : Form
{
private Point startPoint;
private Point endPoint;
private Rectangle rect = new Rectangle();
private Int32 brushThickness = 0;
private Boolean drawSPaint = false;
private List<Shapes> listOfShapes = new List<Shapes>();
private Color currentColor;
private Color currentBoarderColor;
private Boolean IsShapeRectangle = false;
private Boolean IsShapeCircle = false;
private Boolean IsShapeLine = false;
public SPaint()
{
InitializeComponent();
this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.DoubleBuffer, true);
currentColor = Color.Red;
currentBoarderColor = Color.DodgerBlue;
IsShapeRectangle = true;
}
private void panelArea_Paint(object sender, PaintEventArgs e)
{
Graphics g = panelArea.CreateGraphics();
if (drawSPaint == true)
{
Pen p = new Pen(Color.Blue);
p.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
if (IsShapeRectangle == true)
{
g.DrawRectangle(p, rect);
}
else if (IsShapeCircle == true)
{
g.DrawEllipse(p, rect);
}
else if (IsShapeLine == true)
{
g.DrawLine(p, startPoint, endPoint);
}
}
foreach (Shapes shape in listOfShapes)
{
shape.Draw(g);
}
}
private void panelArea_MouseDown(object sender, MouseEventArgs e)
{
startPoint.X = e.X;
startPoint.Y = e.Y;
drawSPaint = true;
}
private void panelArea_MouseMove(object sender, MouseEventArgs e)
{
if (e.Button == System.Windows.Forms.MouseButtons.Left)
{
if (e.X > startPoint.X)
{
rect.X = startPoint.X;
rect.Width = e.X - startPoint.X;
}
else
{
rect.X = e.X;
rect.Width = startPoint.X - e.X;
}
if (e.Y > startPoint.Y)
{
rect.Y = startPoint.Y;
rect.Height = e.Y - startPoint.Y;
}
else
{
rect.Y = e.Y;
rect.Height = startPoint.Y - e.Y;
}
panelArea.Invalidate();
}
}
private void panelArea_MouseUp(object sender, MouseEventArgs e)
{
endPoint.X = e.X;
endPoint.Y = e.Y;
drawSPaint = false;
if (rect.Width > 0 && rect.Height > 0)
{
if (IsShapeRectangle == true)
{
listOfShapes.Add(new TheRectangles(rect, currentColor, currentBoarderColor, brushThickness));
}
else if (IsShapeCircle == true)
{
listOfShapes.Add(new TheCircles(rect, currentColor, currentBoarderColor, brushThickness));
}
else if (IsShapeLine == true)
{
listOfShapes.Add(new TheLines(startPoint, endPoint, currentColor, currentBoarderColor, brushThickness));
}
panelArea.Invalidate();
}
}
private void rectangleToolStripMenuItem_Click(object sender, EventArgs e)
{
IsShapeRectangle = true;
IsShapeCircle = false;
IsShapeLine = false;
}
private void ellipseToolStripMenuItem_Click(object sender, EventArgs e)
{
IsShapeRectangle = false;
IsShapeCircle = true;
IsShapeLine = false;
}
private void lineToolStripMenuItem_Click(object sender, EventArgs e)
{
IsShapeCircle = false;
IsShapeRectangle = false;
IsShapeLine = true;
}
private void ThicknessLevel0_Click(object sender, EventArgs e)
{
brushThickness = 0;
}
private void ThicknessLevel2_Click(object sender, EventArgs e)
{
brushThickness = 2;
}
private void ThicknessLevel4_Click(object sender, EventArgs e)
{
brushThickness = 4;
}
private void ThicknessLevel6_Click(object sender, EventArgs e)
{
brushThickness = 6;
}
private void ThicknessLevel8_Click(object sender, EventArgs e)
{
brushThickness = 8;
}
private void ThicknessLevel10_Click(object sender, EventArgs e)
{
brushThickness = 10;
}
private void ThicknessLevel12_Click(object sender, EventArgs e)
{
brushThickness = 12;
}
private void ThicknessLevel14_Click(object sender, EventArgs e)
{
brushThickness = 14;
}
private void FillColour_Click(object sender, EventArgs e)
{
ColorDialog fillColourDialog = new ColorDialog();
fillColourDialog.ShowDialog();
currentColor = fillColourDialog.Color;
panelArea.Invalidate();
}
private void button1_Click(object sender, EventArgs e)
{
ColorDialog fillColourDialog = new ColorDialog();
fillColourDialog.ShowDialog();
currentBoarderColor = fillColourDialog.Color;
panelArea.Invalidate();
}
}
}
protected override void OnPaint(PaintEventArgs e) {}
this.DoubleBuffered = true;
protected Graphics gfx = null;
// clean up old graphics object
gfx.Dispose();
// recreate graphics object (dont use e.Graphics, because we need to use it
// in other functions)
gfx = this.CreateGraphics();
public class ClearPanel : Panel
{
public ClearPanel(){}
protected override CreateParams CreateParams
{
get
{
CreateParams createParams = base.CreateParams;
createParams.ExStyle |= 0x00000020;
return createParams;
}
}
protected override void OnPaintBackground(PaintEventArgs e){}
}
// Use the panelDraw paint event to draw shapes that are done
void panelDraw_Paint(object sender, PaintEventArgs e)
{
Graphics g = panelDraw.CreateGraphics();
foreach (Rectangle shape in listOfShapes)
{
shape.Draw(g);
}
}
// Use the panelArea_paint event to update the new shape-dragging...
private void panelArea_Paint(object sender, PaintEventArgs e)
{
Graphics g = panelArea.CreateGraphics();
if (drawSETPaint == true)
{
Pen p = new Pen(Color.Blue);
p.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
if (IsShapeRectangle == true)
{
g.DrawRectangle(p, rect);
}
else if (IsShapeCircle == true)
{
g.DrawEllipse(p, rect);
}
else if (IsShapeLine == true)
{
g.DrawLine(p, startPoint, endPoint);
}
}
}
private void panelArea_MouseUp(object sender, MouseEventArgs e)
{
endPoint.X = e.X;
endPoint.Y = e.Y;
drawSETPaint = false;
if (rect.Width > 0 && rect.Height > 0)
{
if (IsShapeRectangle == true)
{
listOfShapes.Add(new TheRectangles(rect, currentColor, currentBoarderColor, brushThickness));
}
else if (IsShapeCircle == true)
{
listOfShapes.Add(new TheCircles(rect, currentColor, currentBoarderColor, brushThickness));
}
else if (IsShapeLine == true)
{
listOfShapes.Add(new TheLines(startPoint, endPoint, currentColor, currentBoarderColor, brushThickness));
}
panelArea.Invalidate();
}
panelDraw.Invalidate();
}
this.SetStyle(
ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint |
ControlStyles.DoubleBuffer,
true);
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SPaint;
namespace YourProject
{
public class MyPanel : System.Windows.Forms.Panel
{
public MyPanel()
{
this.SetStyle(
System.Windows.Forms.ControlStyles.UserPaint |
System.Windows.Forms.ControlStyles.AllPaintingInWmPaint |
System.Windows.Forms.ControlStyles.OptimizedDoubleBuffer,
true);
}
}
}
this.panelArea = new YourProject.MyPanel();
this.panelArea = new MyPanel();
typeof(Panel).InvokeMember("DoubleBuffered",
BindingFlags.SetProperty | BindingFlags.Instance | BindingFlags.NonPublic,
null, DrawingPanel, new object[] { true });
public static class MyExtensions {
public static void SetDoubleBuffered(this Panel panel) {
typeof(Panel).InvokeMember(
"DoubleBuffered",
BindingFlags.NonPublic | BindingFlags.Instance | BindingFlags.SetProperty,
null,
panel,
new object[] { true });
}
}
protected override CreateParams CreateParams
{
get
{
CreateParams handleParam = base.CreateParams;
handleParam.ExStyle |= 0x02000000; // WS_EX_COMPOSITED
return handleParam;
}
}
this.DoubleBuffered = true;
myFormOrControl.BackColor = Color.Gray;
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
}
using System;
using System.Collections.Generic;
using System.Drawing;
using System.Windows.Forms;
using System.Threading;
namespace CircleMove
{
/// <summary>
/// Description of MainForm.
/// </summary>
public partial class MainForm : Form
{
int x=0,y=0;
Thread t;
public MainForm()
{
//
// The InitializeComponent() call is required for Windows Forms designer support.
//
InitializeComponent();
//
// TODO: Add constructor code after the InitializeComponent() call.
//
}
void MainFormPaint(object sender, PaintEventArgs e)
{
Graphics g=e.Graphics;
Pen p=new Pen(Color.Orange);
Brush b=new SolidBrush(Color.Red);
// g.FillRectangle(b,0,0,100,100);
g.FillEllipse(b,x,y,100,100);
}
void MainFormLoad(object sender, EventArgs e)
{
t=new Thread( new ThreadStart(
()=>{
while(true)
{
Thread.Sleep(10);
x++;y++;
this.Invoke(new Action(
()=>{
this.Refresh();
this.Invalidate();
this.DoubleBuffered=true;
}
)
);
}
}
)
);
t.Start();
}
}
}
private void Indicator_Paint(object sender, PaintEventArgs e)
{
Control pbIndicator = (Control)sender;
Rectangle targetRect = pbIndicator.ClientRectangle;
Image img = Bitmap.FromFile("bitmap.bmp");
BufferedGraphicsContext ctx = new BufferedGraphicsContext();
BufferedGraphics bg = ctx.Allocate(e.Graphics, targetRect);
// Do the graphic stuff
bg.Graphics.Clear(this.BackColor);
bg.Graphics.DrawImage(img, 0, 0);
// etcetera
bg.Render(e.Graphics);
bg.Dispose();
ctx.Dispose();
}