高手为什么小弟我在VB6.0中想使用钩子函数会出现有关问题

请教各位高手为什么我在VB6.0中想使用钩子函数会出现问题
Public   Declare   Function   CallNextHookEx   Lib   "user32 "   (ByVal   hHook   As   Long,   ByVal   nCode   As   Long,   wParam   As   Long,   lParam   As   Long)   As   Long

Public   Declare   Function   UnhookWindowsHookEx   Lib   "user32 "   (ByVal   hHook   As   Long)   As   Long

Public   Declare   Function   SetWindowsHookEx   Lib   "user32 "   Alias   "SetWindowsHookExA "   (ByVal   idHook   As   Long,   ByVal   lpfn   As   Long,   ByVal   hmod   As   Long,   ByVal   dwThreadId   As   Long)   As   Long

这三行总报错！
谢谢好心人给我个具体的回答！

------解决方案--------------------
你要把以public方式声明的api函数放到标准模块中