Putting accelerator in Explorer Folder Context Menu item

[MilesAhead]

I'm trying to figure out how Vista and Windows Seven handle Explorer Context Menu underline keys. The code below is a gui that allows the user to add or remove my MD5Hash program to File and Folder Context Menu of Explorer.

It works as far as it goes. But I want to know how to pick a letter of the Key as the underlined character.

expandcollapse popup

#Region ;**** Directives created by AutoIt3Wrapper_GUI ****
#AutoIt3Wrapper_icon=hash.ico
#AutoIt3Wrapper_outfile=MD5Context.exe
#AutoIt3Wrapper_UseUpx=n
#AutoIt3Wrapper_Res_Description=MD5Context
#AutoIt3Wrapper_Res_Fileversion=1.0.0.0
#AutoIt3Wrapper_Res_LegalCopyright=2010  www.FavesSoft.com
#AutoIt3Wrapper_Res_Field=Productname|MD5Context
#AutoIt3Wrapper_Res_Field=Productversion|1.0
#EndRegion ;**** Directives created by AutoIt3Wrapper_GUI ****

#include <ButtonConstants.au3>
#include <GUIConstantsEx.au3>
#include <WindowsConstants.au3>

$width = 285
$height = 85
$left = (@DesktopWidth - $width) / 2
$top = (@DesktopHeight - $height) / 2
#Region ### START Koda GUI section ### Form=c:program files (x86)autoit3scitekodaformsmd5hashform.kxf
$Form1 = GUICreate("MD5Hash Context Menu Tool", 285, 85, $left, $top, BitOR($WS_SYSMENU, $WS_POPUP, $WS_CAPTION, $WS_VISIBLE, $WS_CLIPSIBLINGS))
$Button1 = GUICtrlCreateButton("Add", 45, 30, 75, 25)
$Button2 = GUICtrlCreateButton("Remove", 157, 30, 75, 25)
GUISetState(@SW_SHOW)
#EndRegion ### END Koda GUI section ###

While 1
    $nMsg = GUIGetMsg()
    Switch $nMsg
        Case $GUI_EVENT_CLOSE
            Exit

        Case $Button1
            If MD5ContextAdd() Then
                MsgBox(0x1040, "MD5Hash Context Tool", "MD5Hash Added to Context Menu", 2)
            ElseIf @error = 1 Then
                MsgBox(0x1010, "MD5Hash Context Tool", "MD5Hash.exe Not Found!", 2)
            Else
                MsgBox(0x1010, "MD5Hash Context Tool", "MD5Hash Context Menu Add Failed!", 2)
            EndIf
            Exit

        Case $Button2
            If MD5ContextRemove() Then
                MsgBox(0x1040, "MD5Hash Context Tool", "MD5Hash Removed from Context Menu", 2)
            Else
                MsgBox(0x1010, "MD5Hash Context Tool", "MD5Hash Context Menu Removal Failed!", 2)
            EndIf
            Exit

    EndSwitch
WEnd


Func MD5ContextAdd()
    Local $Md5Root = ""
    Local $FileRegKey = ""
    Local $FolderRegKey = ""
    Local $Md5RegPath = @ScriptDir & "MD5Hash.exe" & " %1"

    If FileExists(@WindowsDir & "SysWow64") Then
        $Md5Root = "HKCR64"
    Else
        $Md5Root = "HKCR"
    EndIf

    If Not FileExists(@ScriptDir & "MD5Hash.exe") Then
        Return SetError(1, 0, False)
    EndIf

    $FileRegKey = $Md5Root & "*shellMD5Hashcommand"
    If Not RegWrite($FileRegKey, "", "REG_SZ", $Md5RegPath) Then
        Return SetError(2, 0, False)
    EndIf

    $FolderRegKey = $Md5Root & "DirectoryshellMD5Hashcommand"
    If Not RegWrite($FolderRegKey, "", "REG_SZ", $Md5RegPath) Then
        Return SetError(3, 0, False)
    EndIf
    Return True
EndFunc   ;==>MD5ContextAdd

Func MD5ContextRemove()

    Local $Md5Root = ""
    Local $FileRegKey = ""
    Local $FolderRegKey = ""

    If FileExists(@WindowsDir & "SysWow64") Then
        $Md5Root = "HKCR64"
    Else
        $Md5Root = "HKCR"
    EndIf

    $FileRegKey = $Md5Root & "*shellMD5Hash"
    If Not RegDelete($FileRegKey) Then
        Return SetError(1, 0, False)
    EndIf

    $FolderRegKey = $Md5Root & "DirectoryshellMD5Hash"
    If Not RegDelete($FolderRegKey) Then
        Return SetError(1, 0, False)
    EndIf

    Return True
EndFunc   ;==>MD5ContextRemove

As it is, in Vista 64 bit if I hold down the Shift key when I right click a folder, it shows MD5Hash with the 'M' underlined and it reacts when I press 'M'. But I can't figure out how to change this to say the '5' key.

[MilesAhead]

Now that I think of it, it may not be possible for static context menu entries. COM Explorer Shell Extensions could insert an item in the menu with an underlined character using the IContextMenu interface. I can force the menu to underline a character but it won't respond to the key press. Oh well. I learned how to turn on the underlines by default for Vista and W7 anyway. Now I know which key to press when looking at the menu without having the hold the shift key.

Edited October 17, 2012 by MilesAhead