Hi forum i want to make a GUI that cause a Blur effect in the Background found a method: superimpose two images, one original and one slightly out of phase with the original. the idea is to do this effect in real time. I don´t know how to remove the flickering that the two calls of BitBlt produces.. help me to find out how to deal with it, This is the code: #include <WinAPIEx.au3> #include <GDIPlus.au3> #include <WindowsConstants.au3> #include <GUIConstantsEx.au3