WPF: Allow user to resize images in RichTextBox

Question

Is there a method within the RichTextBox control in WPF to allow for the user to resize inserted images, or do you have to devise your own method for this.

What I\'m

Answer 1

Turns out you need to wrap your image in a ResizingAdorner.

A beautiful and simple implementation of this code can be found at http://msdn.microsoft.com/en-us/library/ms771714%28loband%29.aspx by Marco Zhou (second post).

The code for this ResizingAdorner is available as an MSDN sample at http://msdn.microsoft.com/en-us/library/ms771714%28loband%29.aspx

Here's a VB.net equivalent of the code I am now using

Dim img As Image
Sub AddImg() Handles btnAddImage.Click
    Dim dlg As New Microsoft.Win32.OpenFileDialog
    dlg.Filter = "Image Files(*.*) | *.*"
    If dlg.ShowDialog Then
        img = New Image
        AddHandler img.Loaded, AddressOf imgloaded
        img.Source = New BitmapImage(New Uri(dlg.FileName, UriKind.Absolute)) With {.CacheOption = BitmapCacheOption.OnLoad}
        Dim container As New BlockUIContainer(img)
        rtb.Document.Blocks.Add(container)
    End If
End Sub

Private Sub imgloaded(ByVal sender As Object, ByVal e As Windows.RoutedEventArgs)
    Dim al As AdornerLayer = AdornerLayer.GetAdornerLayer(img)
    If Not (al Is Nothing) Then
        al.Add(New SDKSample.ResizingAdorner(img))
    End If
End Sub

The ResizingAdorner sample will require some great hacking to meet my needs, but what a great start.

Hope someone else finds this useful!