Viruslav 
Hi everybody! I'm making an app which displays a portion of picture in fullscreen and you can drag the picture with your finger and it displays a different portion. I'm using BitBlt function to paint in respond to WM_PAINT message. The problem is I get image tearing while continuously repainting the screen (while the user is moving its finger). I think the problem is not syncing to the LCD screen refresh cycle. Anyone knows a solution? Thank you.