wow, gdiplus is so difficult ! this is what i got so far in my Image Editing project (a little bit chaotic, yes i know) : . #include <GDIPlus.au3> #include <SliderConstants.au3> Opt("GUIOnEventMode",1) Global Const $SRCCOPY=0xCC0020 Global Const $SB_ENDSCROLL=8 Global Const $SB_THUMBPOSITION=4 Global Const $GDIP_BRIGHTNESSCONTRASTEFFECT="{D3A1DBE1-8EC4-4c17-9F4C-EA97AD1C343D}" Global Const $GDIP_BLUREFFECT="{633C80A4-1843-482b-9EF2-BE2834C5FDD4}" Global Const $GDIP_SHARPENEFFEC