quote: int Blt_Clipped(int x, int y, int width, int height, LPDIRECTDRAWSURFACE7 surface) { RECT src; if((x >= SCREEN_WIDTH) // (y >= SCREEN_HEIGHT) // ((x + width) <= 0) // ((y + height) <= 0)) //Check if surface is totally off the screen return 0; int x1 = x; // Compute bounding box of surface int y1 = y; int x2 = x1 + width; int y2 = y1 + height; if (x1 < 0) // Check if surface is off the left edge x1 = 0; if (y1 < 0) // Check if surface is off the top y1 = 0; if (x2 >= SCREEN_WIDTH) //Check if the surface has gone off the screen to the right x2 = SCREEN_WIDTH; if (y2 >= SCREEN_HEIGHT) // Check if the surface har gone off the bottom of the screen y2 = SCREEN_HEIGHT; src.top = y1 - y; // Calculate which part of src.left = x1 - x; // the surface to use src.bottom = y2 - y1; // when blitting src.right = x2 - x1; backsurf->BltFast(x1, y1, surface, &src, DDBLTFAST_WAIT); // Blit surface to backbuffer return 0; // Return function }