本文整理匯總了VB.NET中System.Drawing.Bitmap.MakeTransparent方法的典型用法代碼示例。如果您正苦於以下問題：VB.NET Bitmap.MakeTransparent方法的具體用法？VB.NET Bitmap.MakeTransparent怎麽用？VB.NET Bitmap.MakeTransparent使用的例子？那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類System.Drawing.Bitmap的用法示例。
在下文中一共展示了Bitmap.MakeTransparent方法的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的VB.NET代碼示例。
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
' 導入命名空間
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