#define Jesus 1
  

    while (game_state){    int time=Get_Time();  // function which returns clock state                           // in milliseconds Windows has one    Get_Controls();    Do_Logic();    Process_Some_More();    // lock frame rate to n frames per second    while (Get_Time()-time<n);}  at the end of the game loop the while loop is used to wait until a certain number of milliseconds has passed. You have to work out what frame rate you want. For windows games 30 fps is good (I have read). This way the game would run at 30 fps or whatever maximum on no matter what PC and the block would advance by such and such pixels in every frame.I aint a Windows programmer but this is what I use for my games in DOS and it works well.  The reason maybe that you are getting a cruddy movement is that the WM_TIMER event thingy might be working at large time intervals like 1 second (again I am not sure about Windows) and one second is too slow to be advancing a tetris block down a screen.Also using my method you may be able to change the amount the block moves as the player advances in levels in the game.  Just a thought huh?I hope it helped. Buy forgive me if it does not...[source]#define Saviour  1#define Jesus  Saviour    

  while (game_state){    int time=Get_Time();  // function which returns clock state                           // in milliseconds Windows has one    Get_Controls();    Do_Logic();    Process_Some_More();    // lock frame rate to n frames per second    while (Get_Time()-time<n);}  

  #define Saviour  1#define Jesus  Saviour