Fixes several issues (#1379 and #1381) in xceedsoftware/wpftoolkit #1393
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Conform to the data contract for GridLength constructor and provide a valid double value when using the grid splitter to resize layout panes. In certain situations, a user can resize panes into negative space which is not valid.
This issues a fix for the NullReferenceException that occurs in v3.4 of AvalonDock when the _draggingItem is null on MouseEnter (reference issue xceedsoftware#1354).
This change temporarily fixes several issues, as described in xceedsoftware#1381 and xceedsoftware#1379. The fix is such that the AvalonDock will no longer crash when the control goes out of bounds. However, this does not prevent the actual control from going out of bounds. Therefore, this fix should only be used as a stop-gap until an actual fix can be implemented.
nonsensesoftware
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Conform to the data contract for GridLength constructor and provide a valid double value when using the grid splitter to resize layout panes. In certain situations, a user can resize panes into negative space which is not valid.