C# cad secondary development class library dialog box to add the frame interface to the class library
using System;
using System.Collections.Generic;
using System. ComponentModel;
using System.Data;
using System. Drawing;
using System. Linq;
using System. Text;
using System. Threading. Tasks;
using System. Windows. Forms;
namespace_19 dialog example
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
this. DrawEentity();
}
//Function to draw graphics
private void DrawEentity()
{
int width = picBxDrawMap. Width;
int height = picBxDrawMap. Height;
Bitmap bitmap = new Bitmap(width, height);//Create a bitmap object
Graphics graph = Graphics.FromImage(bitmap); //Create a GDI + object from a bitmap
Rectangle rect = new Rectangle((int)(width * 0.15), (int)(height * 0.15), (int)(width * 0.8), (int)(height * 0.8));
// draw graphics
Rectangle rectExtends = this.DrawLineAndArc(bitmap, graph, rect);
// draw annotation
this.DrawDimension(bitmap, graph, rectExtends);
//graph.DrawRectangle(new Pen(Brushes.Red), rect);
picBxDrawMap. Image = bitmap;
}
private Rectangle DrawLineAndArc(Bitmap bitmap, Graphics graph, Rectangle rect)
{
double ratio = rect.Width * 1.0 / rect.Height;
double width = (double)numUDlength.Value;//rectangle width
double height = (double)numUDheight.Value;//height of the rectangle
Pen pen = new Pen(Brushes. Black);
Point topLineLeftPoint;
Point topLineRightPoint;
Point rightLineTopPoint;
Point rightLineBottomPoint;
Point bottomLineLeftPoint;
Point bottomLineRightPoint;
Point leftLineTopPoint;
Point leftLineBottomPoint;
if (width/height >= ratio)
{
//Occupy the drawing area with the length, draw the height and arc proportionally
// width => rect.Width height = height * rect.Width/wdith
height = height* rect. Width/width;
int divHeight = (int)(rect. Height - height)/2;
topLineLeftPoint = new Point(rect.X, rect.Y + divHeight);
topLineRightPoint = new Point(rect.X + rect.Width, rect.Y + divHeight);
rightLineTopPoint = topLineRightPoint;
rightLineBottomPoint = new Point(rect.X + rect.Width, rect.Y + rect.Height- divHeight);
bottomLineLeftPoint = new Point(rect.X, rect.Y + rect.Height - divHeight);
bottomLineRightPoint = rightLineBottomPoint;
leftLineTopPoint = topLineLeftPoint;
leftLineBottomPoint = bottomLineLeftPoint;
}
else
{
//Occupy the drawing area with height, draw length and arc proportionally
width = width * rect. Height / height;
int divWidth = (int)(rect.Width - width) / 2;
topLineLeftPoint = new Point(rect. X + divWidth, rect. Y);
topLineRightPoint = new Point(rect.X + rect.Width - divWidth, rect.Y);
rightLineTopPoint = topLineRightPoint;
rightLineBottomPoint = new Point(rect.X + rect.Width - divWidth, rect.Y + rect.Height);
bottomLineLeftPoint = new Point(rect. X + divWidth, rect. Y + rect. Height);
bottomLineRightPoint = rightLineBottomPoint;
leftLineTopPoint = topLineLeftPoint;
leftLineBottomPoint = bottomLineLeftPoint;
}
// draw the top line
graph.DrawLine(pen, topLineLeftPoint, topLineRightPoint);
// draw the bottom line
graph.DrawLine(pen, bottomLineLeftPoint, bottomLineRightPoint);
// draw left line
graph.DrawLine(pen, leftLineTopPoint, leftLineBottomPoint);
// draw the right line
graph.DrawLine(pen, rightLineTopPoint, rightLineBottomPoint);
Rectangle rectExtends = new Rectangle(topLineLeftPoint.X,topLineLeftPoint.Y,topLineRightPoint.X-topLineLeftPoint.X,leftLineBottomPoint.Y-leftLineTopPoint.Y);
return rectExtends;
}
/// <summary>
/// draw annotation
/// </summary>
/// <param name="bitmap"></param>
/// <param name="graph"></param>
/// <param name="rect"></param>
private void DrawDimension(Bitmap bitmap,Graphics graph,Rectangle rect)
{
int width = picBxDrawMap. Width;
int height = picBxDrawMap. Height;
Pen pen = new Pen(Brushes. LawnGreen);
string strW = numUDlength.Value.ToString();//Note text in the horizontal direction
string strH = numUDheight.Value.ToString();//Note text in the vertical direction
//Annotation text for radius
#region //Annotation line of horizontal length
//Point pointHL1 = new Point(rect.X,(int)(height * 0.05));
//Point pointHL2 = new Point(rect.X,(int)(height * 0.14));
Point pointHL1 = new Point(rect.X, (int)(height * 0.05));
Point pointHL2 = new Point(rect.X,rect.Y-4);
Point pointHR1 = new Point(rect.X + rect.Width, (int)(height * 0.05));
Point pointHR2 = new Point(rect.X + rect.Width, rect.Y - 4);
Point PointHH1 = new Point(rect.X, (int)(height * 0.08));
Point PointHH11 = new Point(rect.X + rect.Width / 2 - 12 * (strW.Length / 2)-6, (int)(height * 0.08));
Point PointHH2 = new Point(rect.X + rect.Width / 2 + 12 * (strW.Length / 2) + 8, (int)(height * 0.08));
Point PointHH21 = new Point(rect.X + rect.Width, (int)(height * 0.08));
graph.DrawString(strW, new Font("宋体", 12), Brushes.LawnGreen, rect.X + rect.Width / 2-12*(strW.Length/2), (int)(height * 0.08)-8 );
graph.DrawLine(pen, pointHL1, pointHL2);//Left heald line of horizontal label
graph.DrawLine(pen, pointHR1, pointHR2);//Horizontally labeled left and right heddles
graph.DrawLine(pen, PointHH1, PointHH11);//The first horizontal line
graph.DrawLine(pen, PointHH2, PointHH21);//The second horizontal line
//left arrow
graph.DrawLine(pen, PointHH1, new Point(PointHH1.X + 12, PointHH1.Y - 3));
graph.DrawLine(pen, PointHH1, new Point(PointHH1.X + 12, PointHH1.Y + 3));
//right arrow
graph.DrawLine(pen, PointHH21, new Point(PointHH21.X - 12, PointHH1.Y - 3));
graph.DrawLine(pen, PointHH21, new Point(PointHH21.X - 12, PointHH1.Y + 3));
#endregion
#region //Annotation for vertical height
Point pointVT1 = new Point((int)(width * 0.05), rect.Y);
Point pointVT2 = new Point(rect.X-4, rect.Y);
graph.DrawLine(pen,pointVT1, pointVT2); // vertically annotate the horizontal line above
Point pointVB1 = new Point((int)(width * 0.05), rect. Y + rect. Height);
Point pointVB2 = new Point(rect.X - 4, rect.Y + rect.Height);
graph.DrawLine(pen, pointVB1, pointVB2); // horizontal line below the vertical annotation
graph.DrawString(strH, new Font("宋体", 12), Brushes.LawnGreen,(int)(width * 0.08)-strH.Length*10/2, rect.Y + rect.Height / 2 - 8); //Comment text in vertical direction
Point pointVV1 = new Point((int)(width * 0.08), rect.Y);
Point pointVV11 = new Point((int)(width * 0.08), rect.Y + rect.Height/2-8);
Point pointVV2 = new Point((int)(width * 0.08), rect. Y + rect. Height / 2 + 8);
Point pointVV21 = new Point((int)(width * 0.08), rect. Y + rect. Height);
graph.DrawLine(pen, pointVV1, pointVV11); // Vertically annotate the first line
graph.DrawLine(pen, pointVV2, pointVV21); // vertically annotate the second line
//up arrow
graph.DrawLine(pen, pointVV1, new Point(pointVV1.X - 3, pointVV1.Y + 12));
graph.DrawLine(pen, pointVV1, new Point(pointVV1.X + 3, pointVV1.Y + 12));
// arrow below
graph.DrawLine(pen, pointVV21, new Point(pointVV21.X - 3, pointVV21.Y - 12));
graph.DrawLine(pen, pointVV21, new Point(pointVV21.X + 3, pointVV21.Y - 12));
#endregion
//radius comment
// draw the center line
#region
double lengthDiv = (rect. Height + 10) / 39;
Point firstPoint = new Point(rect. X + rect. Width / 2, rect. Y - 5);
Point endPoint = new Point((int)(rect.X + rect.Width / 2), (int)(firstPoint.Y + 2 * lengthDiv));
for (int i = 0; i < 20; i ++ )
{
graph.DrawLine(new Pen(Brushes.PaleVioletRed), firstPoint, endPoint);
firstPoint.Y = endPoint.Y + (int)lengthDiv;
endPoint = new Point((int)(rect.X + rect.Width / 2), (int)(firstPoint.Y + 2 * lengthDiv));
}
lengthDiv = (rect. Width + 10) / 39;
firstPoint = new Point((int)(rect.X-5),(int)(rect.Y + rect.Height/2));
endPoint = new Point((int)(firstPoint.X + lengthDiv), (int)(rect.Y + rect.Height / 2));
for (int i = 0; i < 22; i ++ )
{
graph.DrawLine(new Pen(Brushes.PaleVioletRed), firstPoint, endPoint);
firstPoint.X = endPoint.X + (int)lengthDiv;
endPoint = new Point((int)(firstPoint.X + lengthDiv), (int)(rect.Y + rect.Height / 2));
}
#endregion
}
private void numUDlength_ValueChanged(object sender, EventArgs e)
{
this. DrawEentity();
}
private void numUDheight_ValueChanged(object sender, EventArgs e)
{
this. DrawEentity();
}
}
}