本文整理汇总了VB.NET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：VB.NET Bitmap.MakeTransparent方法的具体用法？VB.NET Bitmap.MakeTransparent怎么用？VB.NET 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VB.NET代码示例。
示例1: Bitmap
Private Sub MakeTransparent_Example1(ByVal e As PaintEventArgs)
' Create a Bitmap object from an image file.
Dim myBitmap As 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)
End Sub示例2: Bitmap
Private Sub MakeTransparent_Example2(ByVal e As PaintEventArgs)
' Create a Bitmap object from an image file.
Dim myBitmap As 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.
Dim backColor As Color = 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)
End Sub示例3: MakeTransparentBitmap
' 导入命名空间
Imports System.Windows.Forms
Imports System.Drawing
Imports System.Drawing.Drawing2D
public class MakeTransparentBitmap
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
Public Class Form1
Inherits System.Windows.Forms.Form
Private Sub Form1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Click
Me.Close()
End Sub
Private Sub Form1_Paint(ByVal sender As Object, ByVal e As System.Windows.Forms.PaintEventArgs) Handles Me.Paint
Dim bm As Bitmap = new Bitmap("yourfile.jpg")
bm.MakeTransparent(bm.GetPixel(1, 1))
e.Graphics.DrawImage(bm, 0, 0)
End Sub
End Class