Moves Open initialization to a new FileOpen method and adds DragEnter and DragDrop event handlers to support loading files by dragging and dropping instead of using the Open dialog.
Additionally, holding Alt while dropping files in will merge files with the current scene, rather than replacing it.
Moves Open initialization to a new FileOpen method and adds DragEnter and DragDrop event handlers to support loading files by dragging and dropping instead of using the Open dialog. Additionally, holding Alt while dropping files in will merge files with the current scene, rather than replacing it.