Thread: Win32 API - Space Invader

How do you go about creating games using the Windows API? I have been wanting to create a Space Invader clone, but I can't figure out how to have multiple options. See I have a Game menu that contain the options New Game, View Credits, View High Scores, Exit. I can get View High Score to show, but none of the other. For each option do I create a function that handles a WM_PAINT msg?

Code:

new_game(int msg)
{
   switch(msg)
      case WM_PAINT:
      BeingPaint
      EndPaint
}

view_scores(int msg)
{
   switch(msg)
      case WM_PAINT:
      BeingPaint
      EndPaint
}

view_credits(int msg)
{
   switch(msg)
      case WM_PAINT:
      BeingPaint
      EndPaint
}

I found out that GetDC will help me out with problem. Now how do I prevent the content of my window from being erased?

Is using a backbuffer the same as using double buffering?