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This fixes a couple of things related to
DXGLContext
dispose:DXCloseDeviceNV
with an emptyGLDeviceHandle
crashes with AccessViolationException. This checks ifGLDeviceHandle
isn't empty beforehand.GlwfWindow
can only be disposed on main thread.In my case I can now properly handle when the control can't initialize on integrated gpus without crashing. Maybe fixes 113 and 132 as they're similar to what I've encountered (though these may not be related as I now see that NativeWindow also has a finalizer).