如何使用WPF将图像拖放到铬上。 [英] How to drag and drop image on the chromium using WPF.

问题描述

我想使用WPF拖动图像并放下铬。

当我将图像放在铬上时，运行JavaScript。

这可能吗？



这个源代码只是拖放图像。



请帮忙。



我尝试过：

 private void AddButtonClick（ object sender，RoutedEventArgs e）
 {
 var dialog = new Microsoft.Win32.OpenFileDialog（）; 
 
 dialog.Filter = 
图像文件（* .jpg; * .jpeg; * .gif; * .bmp）| * .jpg; * .jpeg; * .gif; * .BMP; 
 
 if（（bool）dialog.ShowDialog（））
 {
 var bitmap = new BitmapImage（new Uri（dialog.FileName））; 
 var image = new Image {Source = bitmap}; 
 Canvas.SetLeft（image，0）; 
 Canvas.SetTop（image，0）; 
 canvas.Children.Add（image）; 
} 
} 
 
 private图片draggedImage; 
 private Point mousePosition; 
 
 private void CanvasMouseLeftButtonDown（object sender，MouseButtonEventArgs e）
 {
 var image = e.Source as Image; 
 
 if（image！= null&& canvas.CaptureMouse（））
 {
 mousePosition = e.GetPosition（canvas）; 
 draggedImage = image; 
 Panel.SetZIndex（draggedImage，1）; //在多个图像的情况下
} 
} 
 
 
 private void CanvasMouseLeftButtonUp（对象发送者，MouseButtonEventArgs e）
 {
 if（ draggedImage！= null）
 {
 canvas.ReleaseMouseCapture（）; 
 Panel.SetZIndex（draggedImage，0）; 
 draggedImage = null; 
} 
} 
 
 private void CanvasMouseMove（对象发送者，MouseEventArgs e）
 {
 if（draggedImage！= null）
 {
 var position = e.GetPosition（canvas）; 
 var offset = position  -  mousePosition; 
 mousePosition = position; 
 Canvas.SetLeft（draggedImage，Canvas.GetLeft（draggedImage）+ offset.X）; 
 Canvas.SetTop（draggedImage，Canvas.GetTop（draggedImage）+ offset.Y）; 
} 
} 
 

解决方案

Google出现了这个例子： CefSharp / CefSharp.Wpf.Example / Handlers / DragHandler.cs [ ^ ]

I want to drag an image and drop on the chromium using WPF.
When i dropped the image on the chromium, for run JavaScript.
Is this possible?

This source code is just to drag and drop images.

please help.

What I have tried:

private void AddButtonClick(object sender, RoutedEventArgs e)
      {
          var dialog = new Microsoft.Win32.OpenFileDialog();

          dialog.Filter =
              "Image Files (*.jpg; *.jpeg; *.gif; *.bmp)|*.jpg; *.jpeg; *.gif; *.bmp";

          if ((bool)dialog.ShowDialog())
          {
              var bitmap = new BitmapImage(new Uri(dialog.FileName));
              var image = new Image { Source = bitmap };
              Canvas.SetLeft(image, 0);
              Canvas.SetTop(image, 0);
              canvas.Children.Add(image);
          }
      }

      private Image draggedImage;
      private Point mousePosition;

      private void CanvasMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
      {
          var image = e.Source as Image;

          if (image != null && canvas.CaptureMouse())
          {
              mousePosition = e.GetPosition(canvas);
              draggedImage = image;
              Panel.SetZIndex(draggedImage, 1); // in case of multiple images
          }
      }


      private void CanvasMouseLeftButtonUp(object sender, MouseButtonEventArgs e)
      {
          if (draggedImage != null)
          {
              canvas.ReleaseMouseCapture();
              Panel.SetZIndex(draggedImage, 0);
              draggedImage = null;
          }
      }

      private void CanvasMouseMove(object sender, MouseEventArgs e)
      {
          if (draggedImage != null)
          {
              var position = e.GetPosition(canvas);
              var offset = position - mousePosition;
              mousePosition = position;
              Canvas.SetLeft(draggedImage, Canvas.GetLeft(draggedImage) + offset.X);
              Canvas.SetTop(draggedImage, Canvas.GetTop(draggedImage) + offset.Y);
          }
      }

解决方案

Google turned up this example: CefSharp / CefSharp.Wpf.Example / Handlers / DragHandler.cs[^]

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