using System; using System.IO; using System.Windows; using System.Windows.Media; using System.Windows.Media.Imaging; public class CanvasToImageConverter { public static void ConvertCanvasToImage(Canvas canvas,
}#regionprivate param///<summary>///是否正在绘图状态///</summary>privateboolisDrawing =false;///<summary>///起始点///</summary>privatePoint startPoint;///<summary>///结束点///</summary>privatePoint endPoint;///<summary>///canvas控件///</summary>privateCanvas canvas =null;///<summary>...
// Create Image element for hosting bitmap. Image img =newImage(); img.Source = bitmap; img.Stretch = Stretch.None; // Submit Image element to layout pass so it gets finite size. img.Measure(newSize(dlg.PrintableAreaWidth, dlg.PrintableAreaHeight)); Size sizeImage = img.DesiredSize; img...
canvas里是绝对定位的。grid里只是相对定位。楼主说image放在canvas超出边界。那有两个简单的做法避免这个问题。1.缩减image尺寸。2.将image放在canvas并设置canvas.left=0和canvas.top=0，如果还超出请参考1.
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Margin="0,0,0,0"Stretch="Uniform"Source="{Binding RelativeSource={RelativeSource Mode=FindAncestor, AncestorType={x:Type local:UcBlackbord}}, Path=AnsPic}"></Image><InkCanvasx:Name="BlackboardCanvas"Background="Transparent"/></Grid></Grid> ...
WPF中绘图有两种方式Canvas和InkCanvas Canvas需要完全由自己实现。 InkCanvas已经默认为我们实现了基本的绘制,同时效果也比较好。 InkCanvas 推荐使用InkCanvas,使用它绘制线的时候会自动优化转折的地方,会变得平滑。 InkCanvas本身已经支持使用鼠标或者触屏来画线,下面的示例是使用代码进行画线。 画线 如下在BlackboardCanvas...
.NET Desktop feedback 是一个开放源代码项目。 选择一个链接以提供反馈: 提出文档问题提供产品反馈 其他资源 培训 学习路径 Use advance techniques in canvas apps to perform custom updates and optimization - Training Use advance techniques in canvas apps to perform custom updates and optimization...
WPF布局之Canvas 2015-12-18 09:50 − 1.Canvas 在WPF中子元素的绝对定位的布局控件 其子元素使用Width、Height定义元素的宽度和高度 使用Convas.Left(Convas.Right)、Convas.Top(Convas.Bottom)定义与Convas容器的相对位置 如果同时存在Con... 天缘博客 0 1269 ...
= new BitmapImage (new Uri("sampleImages\\Waterlilies.jpg", UriKind.Relative)); ImageBrush myImageBrush = new ImageBrush(theImage); Canvas myCanvas = new Canvas(); myCanvas.Width = 300; myCanvas.Height = 200; myCanvas.Background = myImageBrush; mainPanel.Children.Add(myCanvas); } ...