Print desktop behind the form

I have on remote assistence app coded in Delphi, and I need to take one screenshot of the whole screen without show my active form... If I set the AlphaBlend := true then when I take de screenshot the form hides sucessfully, but only if the aero is disabled, I want do know if theres a way to take this snapshot without disable the aero?? ps: hide my form take a screenshot and then show the form again is not a option!! I need a way to take screenshot without show my actual form and without disable dwm!!! Anyone have some idea??? [login to view URL] - SUCESS IN WIN7 [login to view URL] - FAILED IN WIN8 prntscr com/31502u - SUSPEND [login to view URL] and KILL [login to view URL] IN WIN8