SPRT_DC_HORZRES - "Width, in pixels, of the screen" SPRT_DC_VERTRES - "Height, in pixels, of the screen" SPRT_DC_LOGPIXELSX - "Number of pixels per logical inch along the screen width" SPRT_DC_LOGPIXELSY - "Number of pixels per logical inch along the screen height" SPRT_DC_PHYSICALWIDTH - "Dots per line,in pixels, horizon" SPRT_DC_PHYSICALHEIGHT - "Dots of vertical "