本文整理汇总了VB.NET中System.Windows.Media.Imaging.CroppedBitmap.EndInit方法的典型用法代码示例。如果您正苦于以下问题:VB.NET CroppedBitmap.EndInit方法的具体用法?VB.NET CroppedBitmap.EndInit怎么用?VB.NET CroppedBitmap.EndInit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。
在下文中一共展示了CroppedBitmap.EndInit方法的1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: New
' 导入命名空间
Imports System.Windows
Imports System.Windows.Controls
Imports System.Windows.Media
Imports System.Windows.Media.Imaging
Namespace SDKSample
Class CroppedBitmapExample
Inherits Page
Public Sub New()
'/// Create a BitmapImage and set it's DecodePixelWidth to 200. Use /////
'/// this BitmapImage as a source for other BitmapSource objects. /////
Dim myBitmapImage As New BitmapImage()
' BitmapSource objects like BitmapImage can only have their properties
' changed within a BeginInit/EndInit block.
myBitmapImage.BeginInit()
myBitmapImage.UriSource = New Uri("sampleImages/WaterLilies.jpg", UriKind.Relative)
' To save significant application memory, set the DecodePixelWidth or
' DecodePixelHeight of the BitmapImage value of the image source to the desired
' height or width of the rendered image. If you don't do this, the application will
' cache the image as though it were rendered as its normal size rather then just
' the size that is displayed.
' Note: In order to preserve aspect ratio, set DecodePixelWidth
' or DecodePixelHeight but not both.
myBitmapImage.DecodePixelWidth = 200
myBitmapImage.EndInit()
'//////// Crop the BitmapSource ////////////
' Use the BitmapImage created above as the source for a new BitmapSource object
' which is cropped.
' Note: New BitmapSource does not cache. It is always pulled when required.
Dim myCroppedBitmap As New CroppedBitmap()
' BitmapSource objects like CroppedBitmap can only have their properties
' changed within a BeginInit/EndInit block.
myCroppedBitmap.BeginInit()
' Use the BitmapSource object defined above as the source for this new
' BitmapSource (chain the BitmapSource objects together).
myCroppedBitmap.Source = myBitmapImage
' Crop the image to the rectangular area defined below.
' The image is cropped to 80 pixels less in width and 60 less
' in height then the original source.
myCroppedBitmap.SourceRect = New Int32Rect(0, 0, _
CType(myBitmapImage.Width - 80, Integer), _
CType(myBitmapImage.Height - 60, Integer))
myCroppedBitmap.EndInit()
' Create Image Element
Dim myImage As New Image()
myImage.Width = 200
'set image source
myImage.Source = myCroppedBitmap
' Add Image to the UI
Dim myStackPanel As New StackPanel()
myStackPanel.Children.Add(myImage)
Me.Content = myStackPanel
End Sub
End Class
End Namespace 'ImagingSnippetGallery