本文整理汇总了C#中System.Windows.Forms.PaintEventArgs.Graphics属性的典型用法代码示例。如果您正苦于以下问题：C# PaintEventArgs.Graphics属性的具体用法？C# PaintEventArgs.Graphics怎么用？C# PaintEventArgs.Graphics使用的例子？那么, 这里精选的属性代码示例或许可以为您提供帮助。您也可以进一步了解该属性所在类System.Windows.Forms.PaintEventArgs的用法示例。
在下文中一共展示了PaintEventArgs.Graphics属性的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: Form1_MouseDown
private Rectangle RcDraw;
private float PenWidth = 5;
private void Form1_MouseDown(object sender, System.Windows.Forms.MouseEventArgs e)
{
// Determine the initial rectangle coordinates...
RcDraw.X = e.X;
RcDraw.Y = e.Y;
}
private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
// Determine the width and height of the rectangle...
if(e.X < RcDraw.X)
{
RcDraw.Width = RcDraw.X - e.X;
RcDraw.X = e.X;
}
else
{
RcDraw.Width = e.X - RcDraw.X;
}
if(e.Y < RcDraw.Y)
{
RcDraw.Height = RcDraw.Y - e.Y;
RcDraw.Y = e.Y;
}
else
{
RcDraw.Height = e.Y - RcDraw.Y;
}
// Force a repaint of the region occupied by the rectangle...
this.Invalidate(RcDraw);
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
// Draw the rectangle...
e.Graphics.DrawRectangle(new Pen(Color.Blue, PenWidth), RcDraw);
}示例2: PictureBox
// This example creates a PictureBox control on the form and draws to it.
// This example assumes that the Form_Load event handler method is
// connected to the Load event of the form.
private PictureBox pictureBox1 = new PictureBox();
// Cache font instead of recreating font objects each time we paint.
private Font fnt = new Font("Arial",10);
private void Form1_Load(object sender, System.EventArgs e)
{
// Dock the PictureBox to the form and set its background to white.
pictureBox1.Dock = DockStyle.Fill;
pictureBox1.BackColor = Color.White;
// Connect the Paint event of the PictureBox to the event handler method.
pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.pictureBox1_Paint);
// Add the PictureBox control to the Form.
this.Controls.Add(pictureBox1);
}
private void pictureBox1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
// Create a local version of the graphics object for the PictureBox.
Graphics g = e.Graphics;
// Draw a string on the PictureBox.
g.DrawString("This is a diagonal line drawn on the control",
fnt, System.Drawing.Brushes.Blue, new Point(30,30));
// Draw a line in the PictureBox.
g.DrawLine(System.Drawing.Pens.Red, pictureBox1.Left, pictureBox1.Top,
pictureBox1.Right, pictureBox1.Bottom);
}示例3: Main
//引入命名空间
using System;
using System.Drawing;
using System.Windows.Forms;
class SeparateMain
{
public static void Main()
{
Application.Run(new AnotherHelloWorld());
}
}
class AnotherHelloWorld: Form
{
public AnotherHelloWorld()
{
Text = "Another Hello World";
BackColor = Color.White;
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics graphics = pea.Graphics;
graphics.DrawString("Hello, Windows Forms!", Font,
Brushes.Black, 0, 0);
}
}