打印位图文件
本文关键字:文件 位图 打印 | 更新日期: 2023-09-27 18:27:22
我编写了捕获屏幕截图的代码,并将其保存到WPF中的位图文件中。
现在我想将位图发送到一台按打印机页面大小缩放的打印机。
我如何在WPF和C#中做到这一点?
您不能在不询问用户的情况下打印(打开打印对话框)
本文描述了如何使用对话框
PrintDialog dialog = new PrintDialog();
if (dialog.ShowDialog() == true)
{ dialog.PrintVisual(_PrintCanvas, "My Canvas"); }
或者在您的情况下是
private void PrintSomethingNew()
{
PrintDialog dialog = new PrintDialog();
if (dialog.ShowDialog() != true)
{ return; }
StackPanel myPanel = new StackPanel();
myPanel.Margin = new Thickness(15);
Image myImage = new Image();
myImage.Width = 128;
myImage.Stretch = Stretch.Uniform;
myImage.Source = new BitmapImage(new Uri("C:''Tree.jpg", UriKind.Absolute));
myPanel.Children.Add(myImage);
TextBlock myBlock = new TextBlock();
myBlock.Text = "A Great Image.";
myBlock.TextAlignment = TextAlignment.Center;
myPanel.Children.Add(myBlock);
myPanel.Measure(new Size(dialog.PrintableAreaWidth,
dialog.PrintableAreaHeight));
myPanel.Arrange(new Rect(new Point(0, 0),
myPanel.DesiredSize));
dialog.PrintVisual(myPanel, "A Great Image.");
}