[Creat0R]

Можно построить из GUI, а можно использовать хук:

Код:

Global $h_XBox_DLL, $h_XBox_Hook, $p_XBox_Proc, $h_XBox_Brush, $a_XBox_BttnTxts, $n_XBox_TxtColor, $s_XBox_BGFile, $s_XBox_IconFile

_XBox( _
    "MsgBox", _
    '64|"Modified MsgBox"|"This is a Modified MsgBox ' & @CRLF & 'With Font Color,Icon and Button Changes ' & @CRLF & 'On a New BackGround.."', _
    "Click Done!", _
    0x0000FF, _
    @ScriptDir & "\mac5.bmp", _
    @ScriptDir & "\crapper.ico")

_XBox( _
    "InputBox", _
    '"Modified InputBox"|"This is a Modified InputBox' & @CRLF & 'With Font Color,Icon and Button Changes' & @CRLF & 'On a New BackGround.."', _
    'Confirm|No way!', _
    0xBF0000, _
    @ScriptDir & "\mac5.bmp")

Func _XBoxHookProc($nCode, $wParam, $lParam)
    Local $RET = 0, $hBitmap = 0, $xWnd = 0

    If $nCode < 0 Then
        $RET = DllCall($h_XBox_DLL, "int", "CallNextHookEx", _
                "hwnd", $h_XBox_Hook, _
                "int", $nCode, _
                "int", $wParam, _
                "int", $lParam)

        Return $RET[0]
    EndIf

    Switch $nCode
        Case 5 ;5=HCBT_ACTIVATE
            $hBitmap = DllCall($h_XBox_DLL, "hwnd", "LoadImage", _
                    "hwnd", 0, _
                    "str", $s_XBox_IconFile, _
                    "int", 1, _  ;1=IMAGE_ICON
                    "int", 0, _
                    "int", 0, _
                    "int", 0x0010) ;0x0010=LR_LOADFROMFILE

            DllCall($h_XBox_DLL, "int", "SendDlgItemMessage", _
                    "hwnd", $wParam, _
                    "int", 20, _       ;Icon ID
                    "int", 0x0172, _   ;0x0172=STM_SETIMAGE
                    "int", 1, _        ;1=IMAGE_ICON
                    "int", $hBitmap[0])

            For $i = 1 To UBound($a_XBox_BttnTxts)-1
                If $a_XBox_BttnTxts[$i] <> "" Then
                        DllCall($h_XBox_DLL, "int", "SetDlgItemText", _
                            "hwnd", $wParam, _
                            "int", $i, _   ;Button ID
                            "str", $a_XBox_BttnTxts[$i])
                EndIf
            Next
        Case 3 ;3=HCBT_CREATEWND
            $xWnd = $wParam

            If $p_XBox_Proc = 0 And $xWnd <> 0 Then
                $CMBP = DllCallbackRegister("_XBoxModifyProc", "int", "hwnd;int;int;int")
                $p_XBox_Proc = DllCall($h_XBox_DLL, "int", "SetWindowLong", _
                        "hwnd", $xWnd, _
                        "int", -4, _     ;-4=GWL_WNDPROC
                        "int", DllCallbackGetPtr($CMBP))
            EndIf
        Case 4 ;4=HCBT_DESTROYWND
            If $wParam = $xWnd Then DllCall($h_XBox_DLL, "int", "SetWindowLong", _
                    "hwnd", $xWnd, _
                    "int", -4, _  ;-4=GWL_WNDPROC
                    "int", $p_XBox_Proc[0])
    EndSwitch
    Return
EndFunc

Func _XBox($sBox, $vParams, $vButton_Texts = -1, $nLabel_Color = -1, $sBackground_File = '', $sIcon_File = '')
    Dim $h_XBox_DLL = 0, $h_XBox_Hook = 0, $p_XBox_Proc = 0, $h_XBox_Brush = 0
    Dim $a_XBox_BttnTxts = 0, $n_XBox_TxtColor = 0, $s_XBox_BGFile = '', $s_XBox_IconFile = ''

    $h_XBox_DLL = DllOpen("user32.dll")

    Local $hProc = DllCallbackRegister("_XBoxHookProc", "int", "int;int;int")
    Local $TID = DllCall("Kernel32.dll", "int", "GetCurrentThreadId")

    $h_XBox_Hook = DllCall($h_XBox_DLL, "hwnd", "SetWindowsHookEx", _
            "int", 5, _   ;5=WH_CBT
            "ptr", DllCallbackGetPtr($hProc), _
            "hwnd", 0, _
            "dword", $TID[0])

    If $vButton_Texts <> -1 Then
        $a_XBox_BttnTxts = StringSplit($vButton_Texts, "|")
    EndIf

    If $nLabel_Color <> -1 Then
        $n_XBox_TxtColor = $nLabel_Color
    EndIf

    If $sBackground_File <> "" Then
        $s_XBox_BGFile = $sBackground_File
    EndIf

    If $sIcon_File <> "" Then
        $s_XBox_IconFile = $sIcon_File
    EndIf

    Local $aParams = StringSplit($vParams, "|")
    $vParams = ""

    For $i = 1 To $aParams[0]
        $vParams &= $aParams[$i]

        If $i < $aParams[0] Then
            $vParams &= ","
        EndIf
    Next

    Local $iRet = Execute($sBox & '(' & $vParams & ')')

    DllCall($h_XBox_DLL, "int", "UnhookWindowsHookEx", "hwnd", $h_XBox_Hook[0])
    DllCallbackFree($hProc)
    DllClose($h_XBox_DLL)

    Return $iRet
EndFunc

Func _XBoxModifyProc($hWnd, $uMsg, $wParam, $lParam)
    Local $hBitmap = 0, $RET = 0

    Switch $uMsg
        Case 272 ;WM_INITDIALOG
            If FileExists($s_XBox_BGFile) Then
                $hBitmap = DllCall($h_XBox_DLL, "hwnd", "LoadImage", _
                        "hwnd", 0, _
                        "str", $s_XBox_BGFile, _
                        "int", 0, _  ;0=IMAGE_BITMAP
                        "int", 0, _
                        "int", 0, _
                        "int", 0x0010) ;0x0010=LR_LOADFROMFILE
                $h_XBox_Brush = DllCall("gdi32.dll", "hwnd", "CreatePatternBrush", "hwnd", $hBitmap[0])
            EndIf
        Case 310, 312 ;310=WM_CTLCOLORDLG,312=WM_CTLCOLORSTATIC
            If $n_XBox_TxtColor <> 0 Then
                DllCall("gdi32.dll", "int", "SetBkMode", "hwnd", $wParam, "int", 1) ;1=TRANSPARENT
                DllCall("gdi32.dll", "int", "SetTextColor", "hwnd", $wParam, "int", _XBoxRGB2BGR($n_XBox_TxtColor))

                Return $h_XBox_Brush[0]
            EndIf
    EndSwitch

    $RET = DllCall($h_XBox_DLL, "int", "CallWindowProc", "hwnd", $p_XBox_Proc[0], "hwnd", $hWnd, "int", $uMsg, "int", $wParam, "int", $lParam)

    Return $RET[0]
EndFunc

Func _XBoxRGB2BGR($iColor)
    If IsInt($iColor) And ($iColor < 2 ^ 24) Then
        Local $iX = BitShift(BitAND($iColor, 0xFF0000), 16)
        Local $iY = BitAND($iColor, 0xFF00)
        Local $iZ = BitShift(BitAND($iColor, 0xFF), -16)
        Return BitOR($iX, $iY, $iZ)
    Else
        Return -1
    EndIf
EndFunc

Файл изображения и иконку прикрепил, поместить в папку со скриптом.