Hello,
you need DelphiCode to get the screenshot or just want the screenshot?
If you only want to take a screenshot, move the form out of the screen und use a snipping tool to get the screenshot.
Windows has a build in snipping tool.
I do not understand the "shows it again".
I can not move the form, or hide it needs to stay, visible to the client I'm going to capture the screen that is behind him
Example:
prntscr.com/314rix - SUCESS IN WIN7
prntscr.com/314tj7 - FAILED IN WIN8
prntscr
com/31502u - SUSPEND WINLOGON.EXE and KILL DWM.EXE IN WIN8