Delphi | Add item to explorer's right click menu with application icon

Hi We want a delphi example code which will add an item to explorer's right click menu for all types of files WITH application icon. You must do it with DLL, shell extension context menu. Example : [login to view URL] 1) When user click that item, windows must send file path as parameter to the main exe. Main exe just alert the file path. We will handle the rest. 2) When user click that item, if main exe is already opened it must not be opened again, already opened one must get the parameters. 3) This must be work on all windows platform (xp, vista, win7, win8) (all 32 bit, 64 architecture) 4) Code must work under delphi 2010.