"Even a perfect program still has bugs."
In order for a game to function, there must be a user, and that user must be able to input his will into the game. He or she will do this by using usually a combination of mouse and keyboard and maybe other devices. This text will show you how to check for keypresses using a Windows API call called:
Private Declare Function GetKeyState Lib "user32" Alias "GetKeyState" (ByVal nVirtKey As Long) As Integer
'You'll also need these
Private Const KEY_TOGGLED As Integer = &H1
Private Const KEY_PRESSED As Integer = &H1000
The way to use this API to test for keypresses is like so:
If GetKeyState(vbKeyUp) And KEY_PRESSED Then _
'the key was pressed
if GetKeyState(vbkeyCapital) and KEY_TOGGLED Then _
'Caps lock is ON
Notice that the toggled flag is used for keys that can have a state, like Numlock etc..
--IGTHORN
Thanks to Andy for giving me the Key_* constant values.