disableControl(controlText,windowName)
{
    WinGet, ActiveControlList, ControlList,windowName
        Loop, Parse, ActiveControlList, `n
            {
            ;msgbox, %A_loopfield%
            ControlGetText,b, %A_LoopField%,windowName
            ;msgbox, %b%
            if B = controlText
                control,disable,,%A_loopfield%,windowName
            }
}