Get chr from virtual key (wparam and Lparam)

[supergg02]

in some api call we got a wparm (wparm is a virtual key according to MS SDK) as a returned result

Is there a way to convert this wparm to char according to keyboard layout ?

thinks a lot

Edited February 6, 2006 by supergg02

[Laine]

in some api call we got a wparm (wparm is a virtual key according to MS SDK) as a returned result

Most Win32 api functions involve <b>Wparam</b> and <b> Lparam</b> to send and receive information.

There are api functions to map VK_KEYS to keyboard layout.

If it has to do with autoIt though you'll have to be more specific so those guys can point you in the right direction.

[cdkid]

mmm... try this

expandcollapse popup

Func _SendKeys($hWnd, $keys)
    If $hWnd <= 0 Or StringLen($keys) = 0 Then
        SetError(-1)
        Return False
    EndIf
    $keys = StringUpper($keys)
    $keys = StringReplace($keys, "`", Chr($VK_OEM_3))
    $keys = StringReplace($keys, "~", Chr($VK_OEM_3))
    $keys = StringReplace($keys, "-", Chr($VK_OEM_MINUS))
    $keys = StringReplace($keys, "=", Chr($VK_OEM_PLUS))
    $keys = StringReplace($keys, "{ENTER}", Chr(0xD))
    $keys = StringReplace($keys, "{TAB}", Chr(0x9))
    $keys = StringReplace($keys, "{ESC}", Chr($VK_ESC))
    $keys = StringReplace($keys, "{F5}", Chr($VK_F5))
    $keys = StringReplace($keys, "{F12}", Chr($VK_F12))
    $keys = StringReplace($keys, "{SHIFT}", "+")
    Local $i, $ret
    Local $shiftdown = False
    For $i = 1 To StringLen($keys)
        If StringMid($keys, $i, 1) = "+" Then
            DllCall("user32.dll", "int", "PostMessage", "hwnd", $hWnd, "int", 0x100, "int", 0x10, "long", 0x002A0001)
            DllCall("user32.dll", "int", "PostMessage", "hwnd", $hWnd, "int", 0x100, "int", 0x10, "long", 0x402A0001)
            $shiftdown = True
            Sleep(1)
            ContinueLoop
        Else
            $ret = DllCall("user32.dll", "int", "MapVirtualKey", "int", Asc(StringMid($keys, $i, 1)), "int", 0)
            If IsArray($ret) Then
                DllCall("user32.dll", "int", "PostMessage", "hwnd", $hWnd, "int", 0x100, "int", Asc(StringMid($keys, $i, 1)), "long", _MakeLong(1, $ret[0]))
                Sleep(1)
                DllCall("user32.dll", "int", "PostMessage", "hwnd", $hWnd, "int", 0x101, "int", Asc(StringMid($keys, $i, 1)), "long", _MakeLong(1, $ret[0]) + 0xC0000000)
            EndIf
        EndIf
        If $shiftdown Then
            Sleep(1)
            DllCall("user32.dll", "int", "PostMessage", "hwnd", $hWnd, "int", 0x101, "int", 0x10, "long", 0xC02A0001)
            $shiftdown = False
        EndIf
    Next
    Return True
EndFunc 
Func _MakeLong($LoWord, $HiWord)
    Return BitOR($HiWord * 0x10000, BitAND($LoWord, 0xFFFF))
EndFunc

...i didnt write this, im not gonna take credit for. i dont knwo who did

~cdkid

[supergg02]

Here a short description about what I mean:

It is a API function that return a Wparam and Lparam : here is a prototype:

LRESULT CALLBACK KeyboardProc(

int code,

WPARAM wParam,

LPARAM lParam

);

wParam

[in] Specifies the virtual-key code of the key that generated the keystroke message.

lParam

[in] Specifies the repeat count, scan code, extended-key flag, context code, previous key-state flag, and transition-state flag. For more information about the lParam parameter, see Keystroke Message Flags. This parameter can be one or more of the following values.

0-15

Specifies the repeat count. The value is the number of times the keystroke is repeated as a result of the user's holding down the key.

16-23

Specifies the scan code. The value depends on the OEM.

24

Specifies whether the key is an extended key, such as a function key or a key on the numeric keypad. The value is 1 if the key is an extended key; otherwise, it is 0.

25-28

Reserved.

29

Specifies the context code. The value is 1 if the ALT key is down; otherwise, it is 0.

30

Specifies the previous key state. The value is 1 if the key is down before the message is sent; it is 0 if the key is up.

31

Specifies the transition state. The value is 0 if the key is being pressed and 1 if it is being released.

So my question is How to convert returned Data (ie Wparam and L param) to a char ?

Hope it is clear know and thinks a lot for any help