Create a custom Thumb for the title DragMove

[punker76]

What steps will reproduce this issue?

Some users have some problems with the current drag move solution of MahApps which uses a normal Thumb. The problem is that the Thumb is consuming the mouse down events and don't allow other mouse actions like custom title bars with buttons...

Expected outcome

This should be allowed! :-D So try create a custom Thumb that handles user mouse actions.

solves/samples

• Visual bug while using RightWindowCommands Visual bug while using RightWindowCommands #2449
• Cannot fully programatically maximize window. Cannot fully programatically maximize window. #1823

Environment

• MahApps.Metro >= 1.2.4
• Windows 7, 8, 10
• Visual Studio >= 2015
• .NET Framework >= 4