How to resize images in a RichTextBox's InlineUIContainer using C#?

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C#

WPF

RichTextBox

I insert an image in a RichTextBox by using a InlineUIContainer. Now I am trying to add some handlers to this image.

Here is my code:

filepath = openFileDialog.FileName;
                Image img = new Image();
                BitmapImage bImg = new BitmapImage();
                img.IsEnabled = true;
                bImg.BeginInit();
                bImg.UriSource = new Uri(filepath, UriKind.Relative);
                bImg.EndInit();
                img.Source = bImg;
                img.MouseEnter += new MouseEventHandler(img_MouseEnter);
                img.Stretch = Stretch.Uniform;                                    
                   new InlineUIContainer(img, richMain.Selection.Start); 

However, when I move my mouse enter this image, nothing happen. What I'm trying to add are some handlers like resize, click, and drag and drop. Is it possible?

I appreciate for any answers.

Thanks!