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WoW:UI coordinates
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=== UI Root Coordinates === WoW normalizes all screen resolutions to be 768 pixels high, and then an aspect-appropriate width. Thus any 4:3 screen resolution appears as 1024x768, any 5:4 as 960x768, and 16:10 as 1228.8x768. The virtual "root" frame, which all non-parented frames are children of, then has this normalized size. The [[API GetCursorPosition|x,y = GetCursorPosition()]] function returns the x,y location in UI Root Coordinates, with the origin in its standard BOTTOM LEFT screen corner location. (Prior to WoW 2.0, for frames with anchor-defined sizes (not forced sizes), [[API LayoutFrame GetWidth|w = layoutFrame:GetWidth()]] and [[API LayoutFrame GetHeight|h = layoutFrame:GetHeight()]] return values in the UI Root Coordinate system.)
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