本文整理汇总了C#中System.Drawing.Bitmap.MakeTransparent方法的典型用法代码示例。如果您正苦于以下问题：C# Bitmap.MakeTransparent方法的具体用法？C# Bitmap.MakeTransparent怎么用？C# Bitmap.MakeTransparent使用的例子？那么恭喜您, 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.Bitmap的用法示例。
在下文中一共展示了Bitmap.MakeTransparent方法的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: MakeTransparent_Example1
private void MakeTransparent_Example1(PaintEventArgs e)
{
// Create a Bitmap object from an image file.
Bitmap myBitmap = new Bitmap("Grapes.gif");
// Draw myBitmap to the screen.
e.Graphics.DrawImage(myBitmap, 0, 0, myBitmap.Width,
myBitmap.Height);
// Make the default transparent color transparent for myBitmap.
myBitmap.MakeTransparent();
// Draw the transparent bitmap to the screen.
e.Graphics.DrawImage(myBitmap, myBitmap.Width, 0,
myBitmap.Width, myBitmap.Height);
}示例2: MakeTransparent_Example2
private void MakeTransparent_Example2(PaintEventArgs e)
{
// Create a Bitmap object from an image file.
Bitmap myBitmap = new Bitmap("Grapes.gif");
// Draw myBitmap to the screen.
e.Graphics.DrawImage(
myBitmap, 0, 0, myBitmap.Width, myBitmap.Height);
// Get the color of a background pixel.
Color backColor = myBitmap.GetPixel(1, 1);
// Make backColor transparent for myBitmap.
myBitmap.MakeTransparent(backColor);
// Draw the transparent bitmap to the screen.
e.Graphics.DrawImage(
myBitmap, myBitmap.Width, 0, myBitmap.Width, myBitmap.Height);
}示例3: Bitmap.MakeTransparent( );
//引入命名空间
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
namespace BitmapOther_c
{
/// <summary>
/// Summary description for BitmapOther.
/// </summary>
public class BitmapOther : System.Windows.Forms.Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
public BitmapOther()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
//
// BitmapOther
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Name = "BitmapOther";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "BitmapOther";
this.Load += new System.EventHandler(this.BitmapOther_Load);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new BitmapOther());
}
private void BitmapOther_Load(object sender, System.EventArgs e)
{
}
protected override void OnPaint ( PaintEventArgs e )
{
Bitmap BMP = new Bitmap("Colorbars.JPG");
Point Pt = new Point(20,20);
// BMP.SetPixel(15,20,Color.Black);
BMP.MakeTransparent( BMP.GetPixel(15,25) );
e.Graphics.DrawImage(BMP, Pt);
e.Graphics.DrawLine(new Pen(Brushes.GreenYellow,30),60,60,200,60);
}
}
}