   HDCs and projection machine
  hi people,i have a project about some complex scene analysis.my computer have a monitor and a projection machine, like two desktops.anyhelp with how to use multiple dektops with an application will be grateful.projection machine will send color patterns and i have tried displaying the color patterns on the first monitor using hdc and setpixel method (i'm working under vc++ 6.0) but it seems very slow while producing patterns(there are algorithms but not complex) i guess the slowness is because of using hdc.anyone know how to send color bitmap images to second desktop as fullscreen?i have ideas like generating patterns with opengl or directx but the main issue is using multiple desktops with an application, on the other hand it would be good to display fast bitmaps using only windows programming.thanks   