本文整理汇总了C#中System.Drawing.Graphics.Dispose方法的典型用法代码示例。如果您正苦于以下问题：C# Graphics.Dispose方法的具体用法？C# Graphics.Dispose怎么用？C# Graphics.Dispose使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类System.Drawing.Graphics的用法示例。
在下文中一共展示了Graphics.Dispose方法的2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: FromImageImage1
private void FromImageImage1(PaintEventArgs e)
{
// Create image.
Image imageFile = Image.FromFile("SampImag.jpg");
// Create graphics object for alteration.
Graphics newGraphics = Graphics.FromImage(imageFile);
// Alter image.
newGraphics.FillRectangle(new SolidBrush(Color.Black), 100, 50, 100, 100);
// Draw image to screen.
e.Graphics.DrawImage(imageFile, new PointF(0.0F, 0.0F));
// Release graphics object.
newGraphics.Dispose();
}示例2: Graphics.Dispose()
//引入命名空间
using System;
using System.Drawing;
using System.Windows.Forms;
class BlockOut: Form
{
bool bBlocking, bValidBox;
Point ptBeg, ptEnd;
Rectangle rectBox;
public static void Main()
{
Application.Run(new BlockOut());
}
protected override void OnMouseDown(MouseEventArgs mea)
{
if (mea.Button == MouseButtons.Left)
{
ptBeg = ptEnd = new Point(mea.X, mea.Y);
Graphics grfx = CreateGraphics();
grfx.DrawRectangle(new Pen(ForeColor), Rect(ptBeg, ptEnd));
grfx.Dispose();
bBlocking = true;
}
}
protected override void OnMouseMove(MouseEventArgs mea)
{
if (bBlocking)
{
Graphics grfx = CreateGraphics();
grfx.DrawRectangle(new Pen(BackColor), Rect(ptBeg, ptEnd));
ptEnd = new Point(mea.X, mea.Y);
grfx.DrawRectangle(new Pen(ForeColor), Rect(ptBeg, ptEnd));
grfx.Dispose();
Invalidate();
}
}
protected override void OnMouseUp(MouseEventArgs mea)
{
if (bBlocking && mea.Button == MouseButtons.Left)
{
Graphics grfx = CreateGraphics();
rectBox = Rect(ptBeg, new Point(mea.X, mea.Y));
grfx.DrawRectangle(new Pen(ForeColor), rectBox);
grfx.Dispose();
bBlocking = false;
bValidBox = true;
Invalidate();
}
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
if (bValidBox)
grfx.FillRectangle(new SolidBrush(ForeColor), rectBox);
if (bBlocking)
grfx.DrawRectangle(new Pen(ForeColor), Rect(ptBeg, ptEnd));
}
Rectangle Rect(Point ptBeg, Point ptEnd)
{
return new Rectangle(Math.Min(ptBeg.X, ptEnd.X),
Math.Min(ptBeg.Y, ptEnd.Y),
Math.Abs(ptEnd.X - ptBeg.X),
Math.Abs(ptEnd.Y - ptBeg.Y));
}
}