* GDI: Removed the BorderDimension usage in DoUpdateWindowPosition and added a call to InvalidateRect(). This fixed the Splitter and UI Designer redraw issues. The event duplicates still need to be fixed.
* GDI: Removed the BorderDimension usage in DoUpdateWindowPosition and added a call to InvalidateRect(). This fixed the Splitter and UI Designer redraw issues. The event duplicates still need to be fixed.

wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI,wkitty42/fpGUI