Question

My windows forms application hosts AvalonEdit (the composite WPF control in question) in one of its forms to cater to its text editing requirements. Here’s the code I use:

WPFHost = gcnew ElementHost();
TextField = gcnew AvalonEdit::TextEditor();
WPFHost->Dock = DockStyle::Fill;
WPFHost->Child = TextField;

TextField->Options->AllowScrollBelowDocument = false;
TextField->Options->EnableEmailHyperlinks = false;
TextField->Options->EnableHyperlinks = true;
TextField->Options->RequireControlModifierForHyperlinkClick = true;
TextField->ShowLineNumbers = true;

ContainerControl->Controls->Add(WPFHost); // the container is a panel

The code compiles and executes fine, except for the scrollbars – http://dl.dropbox.com/u/2584752/avalonEditBug.png . Right clicking on what’s left of the bar raises an ArgumentOutOfRange exception.

Strangely, I wasn’t able to reproduce the issue when I tried hosting the control in a newly created sample project. ‘mI using the latest build of the text editor and have all the requisite assemblies installed.

EDIT: Wrapping the editor in a usercontrol doesn’t help either.

Answer 1

I’ve implemented a workaround for the issue as mentioned in this thread [ Synchronizing a WPF ScrollViewer with a WinForms ScrollBar ].