'窗體中
option explicit
private sub form_load()
dim ret as long
 '記錄原來的window程序地址
 prewinproc = getwindowlong(me.hwnd, gwl_wndproc)
 '用自定義程序代替原來的window程序
 ret = setwindowlong(me.hwnd, gwl_wndproc, addressof wndproc)
 idhotkey = 1 'in the range &h0000 through &hbfff
 modifiers = mod_alt '輔助鍵為alt
 uvirtkey1 = vbkeyq '注冊的熱鍵為alt+q
 '注冊熱鍵
 ret = registerhotkey(me.hwnd, idhotkey, modifiers, uvirtkey1)
 if ret = 0 then
 msgbox "注冊熱鍵失敗,請使用其它熱鍵!", vbcritical, "錯誤"
 end if
end sub
private sub form_queryunload(cancel as integer, unloadmode as integer)
dim ret as long
 '取消message的截取,使之送往原來的window程序
 ret = setwindowlong(me.hwnd, gwl_wndproc, prewinproc)
 call unregisterhotkey(me.hwnd, uvirtkey1)
end sub
'模塊中
'以下程序放在模塊中
option explicit
declare function setwindowlong lib "user32" alias "setwindowlonga" (byval hwnd as long, byval nindex as long, byval dwnewlong as long) as long
declare function getwindowlong lib "user32" alias "getwindowlonga" (byval hwnd as long, byval nindex as long) as long
declare function callwindowproc lib "user32" alias "callwindowproca" (byval lpprevwndfunc as long, byval hwnd as long, byval msg as long, byval wparam as long, byval lparam as long) as long
declare function registerhotkey lib "user32" (byval hwnd as long, byval id as long, byval fsmodifiers as long, byval vk as long) as long
declare function unregisterhotkey lib "user32" (byval hwnd as long, byval id as long) as long
public const wm_hotkey = &h312
public const mod_alt = &h1
public const mod_control = &h2
public const mod_shift = &h4
public const gwl_wndproc = (-4)
public prewinproc as long
public modifiers as long, uvirtkey1 as long, idhotkey as long
private type talong
 ll as long
end type
private type t2int
 lword as integer
 hword as integer
end type
 
public function wndproc(byval hwnd as long, byval msg as long, byval wparam as long, byval lparam as long) as long
dim lp as talong, i2 as t2int
 if msg = wm_hotkey then
 if wparam = idhotkey then
 lp.ll = lparam
 lset i2 = lp
 if (i2.lword = modifiers) and i2.hword = uvirtkey1 then
 form1.visible = not form1.visible
 end if
 end if
 end if
 '如果不是熱鍵信息則調用原來的程序
 wndproc = callwindowproc(prewinproc, hwnd, msg, wparam, lparam)
end function