--
-- demo\arwendemo\hotkey.exw
-- =========================
--
--  Author: Pete Lomax, credit to Aku Saya for HotKey
--                            and Thomas Parslow for sendkeys
--
--  http://phix.x10.mx
--
--/**/with gui
include arwen.ew

constant
    MOD_ALT = #1,
    MOD_CONTROL = #2,
    MOD_SHIFT = #4,
    MOD_WIN = #8

integer Modifier, vKeyCode

constant Main = create(Window, "Hotkey", 0, 0, 36, 99, 294, 201, 0)
constant MainHwnd = getHwnd(Main)
constant mFile = create(Menu,"File",0,Main,190,63,0,0,0)
constant mExit = create(MenuItem,"Exit",0,mFile,194,53,0,0,0)
constant mHelp = create(Menu,"Help",0,Main,182,57,0,0,0)
constant mAbout = create(MenuItem,"About",0,mHelp,184,45,0,0,0)
constant AltKey = create(CheckBox, "Alt", 0, Main, 8, 5, 62, 20, 0)
constant ShiftKey = create(CheckBox, "Shift", 0, Main, 8, 28, 56, 20, 0)
constant CtrlKey = create(CheckBox, "Ctrl", 0, Main, 8, 52, 70, 20, 0)
constant WinKey = create(CheckBox, "Windows", 0, Main, 8, 76, 72, 20, 0)
constant KeyList = create(ComboDropDown, "KeyList", 0, Main, 89, 11, 100, 652, 0)
constant KeyInfoText = create(Label, "", 0, Main, 90, 72, 186, 20, SS_LEFTNOWORDWRAP)
constant SetButton = create(Button, "setHotKey", 0, Main, 8, 99, 176, 40, BS_DEFPUSHBUTTON)
constant KillButton = create(Button, "killHotKey", 0, Main, 195, 99, 80, 40, 0)

sequence KeyCodes

procedure initialise()
string text
    for f=1 to 11 do    -- F1 to F11 (F12 is reserved)
        text = sprintf("F%d",f)
        void = insertItem(KeyList,text,0)
    end for
    KeyCodes = {VK_F1, VK_F2, VK_F3, VK_F4, VK_F5, VK_F6, VK_F7, VK_F8, VK_F9, VK_F10, VK_F11}
    for ch='A' to 'Z' do
        text = sprintf("%s",ch)
        void = insertItem(KeyList,text,0)
        KeyCodes &= ch -- (as char, not string)
    end for
    for i=1 to 9 do
        text = sprintf("%d",i)
        void = insertItem(KeyList,text,0)
        KeyCodes &= i -- (as char, not string)
    end for
end procedure
initialise()

constant INPUT_KEYBOARD=1

procedure pokeKey(atom pKey, integer key)
-- see http://msdn.microsoft.com/en-us/library/windows/desktop/ms646270(v=vs.85).aspx
-- and http://msdn.microsoft.com/en-us/library/windows/desktop/ms646271(v=vs.85).aspx
integer ScanCode
    ScanCode = c_func(xVkKeyScan,{key})
    poke4(pKey+KEYBDINPUT_type,INPUT_KEYBOARD)
    poke2(pKey+KEYBDINPUT_wVk,key)
    poke4(pKey+KEYBDINPUT_dwFlags,0)
    poke4(pKey+KEYBDINPUT_wScan,ScanCode)
    poke4(pKey+KEYBDINPUT_time,0)
    poke4(pKey+KEYBDINPUT_dwExtraInfo,0)
end procedure

function MainHandler(integer id, integer msg, atom wParam, object lParam)
string text
atom pKeys, pKey
integer nRes

    if msg=WM_SETFOCUS then
        if id=SetButton then
            if not getIndex(KeyList) then
                setFocus(KeyList)
                void = messageBox("HotKey","Select a key from the drop-down",MB_OK)
            else
                Modifier = isChecked(AltKey) * MOD_ALT +
                           isChecked(ShiftKey) * MOD_SHIFT +
                           isChecked(CtrlKey) * MOD_CONTROL +
                           isChecked(WinKey) * MOD_WIN
                vKeyCode = KeyCodes[getIndex(KeyList)]
                text = sprintf("setHotKey(Main, #%02x, #%02x) [%s]",{Modifier,vKeyCode,getText(KeyList)})
                setText(KeyInfoText, text)
            end if
        elsif id=KillButton then
            text = sprintf("killHotKey(Main) [%s]",{getText(KeyList)})
            setText(KeyInfoText, text)
        end if
    elsif msg=WM_COMMAND then
        if id=mExit then
            closeWindow(Main)
        elsif id=mAbout then
            text = "Simple hotkey/sendinput wrapper.\n\n"&

                   "Author Pete Lomax.\n"&
                   "Written in phix (http://phix.x10.mx) but could easily be ported\n"&
                   "to any language (that can invoke RegisterHotKey and SendInput).\n\n"&

                   "First, use the checkboxes and dropdown to select a hotkey (eg F7).\n"&
                   "Currently always sends {delete,down}, but that could easily be changed.\n"&
                   "Used on build02 to perform the GUID stripping.\n\n"&

                   "Note that Windows Server 2008 requires this to be run in admin mode, \n"&
                   "as otherwise something called UIPI will block it and not say why.\n"
            void = messageBox("HotKey",text,MB_OK)
        elsif id=SetButton then
            -- see http://msdn.microsoft.com/en-us/library/windows/desktop/ms646309(v=vs.85).aspx
            if c_func(xRegisterHotKey,{MainHwnd, 0, Modifier, vKeyCode})=0 then
                void = messageBox("HotKey","Register Hotkey failed",MB_OK)
            end if
        elsif id=KillButton then
            if c_func(xUnregisterHotKey,{MainHwnd, 0})=0 then
                void = messageBox("HotKey","UnRegister Hotkey failed",MB_OK)
            end if
        end if
    elsif msg=WM_HOTKEY then
        setText(Main,sprintf("%g",time()))
        pKeys = allocate(sizeofstruct(KEYBDINPUT)*2)
        pKey = pKeys
        pokeKey(pKey,VK_DELETE)
        pKey += sizeofstruct(KEYBDINPUT)
        pokeKey(pKey,VK_DOWN)

        -- see http://msdn.microsoft.com/en-us/library/windows/desktop/ms646310(v=vs.85).aspx
        nRes = c_func(xSendInput,{2,pKeys,sizeofstruct(KEYBDINPUT)})
        if nRes!=2 then
            nRes = c_func(xGetLastError,{})
            text = sprintf("SendInput failed[%d]",nRes)
            void = messageBox("HotKey",text,MB_OK)
        end if
    end if
    if wParam or object(lParam) then end if -- suppress warnings
    return 0
end function
setHandler({Main,SetButton,KillButton,mExit,mAbout},routine_id("MainHandler"))

WinMain(Main,SW_NORMAL)