The problem with the IID_s is solved ! File-Structure: ~~~~~~~~~~~~~~~ DirectDraw.pas = DDraw.h The problem with the IID_s is solved ! File-Structure: ~~~~~~~~~~~~~~~ DirectDraw.pas = DDraw.h + DVP.h (+ MultiMon.h) Direct3D.pas = D3D.h + D3... ?? 2015-09-04 ?? kikye File-Structure DirectDraw problem solved