I used Depends.exe and examined gdi32.dll. I found out that at least there functions are missing in the gdi32.dll api status at svn.reactos.com:

AnimatePalette
Arc
ArcTo
BitBlt
cGetTTFFromFOT
CombineRgn
CombineTransform
CreateBitmap
CreateBitmapIndirect
CreateCompatibleBitmap
CreateCompatibleDC
CreateDiscardableBitmap
CreateEllipticRgn
CreateEllipticRgnIndirect
CreateHalftonePalette
CreateHatchBrush
CreatePalette
CreatePatternBrush
CreatePen
CreatePenIndirect
CreatePolygonRgn
CreatePolyPolygonRgn
CreateRectRgn
CreateRectRgnIndirect
CreateRoundRectRgn
CreateSolidBrush
DdEntry0
DdEntry1
DdEntry10