uintptr(unsafe.Pointer(fmtp)),
		1000, 2000, 3000)
	if string(buf[:a]) != "1000 2000 3000" {
		t.Error("cdecl USER32.wsprintfA returns", a, "buf=", buf[:a])
	}
}

func TestEnumWindows(t *testing.T) {
	d := GetDLL(t, "user32.dll")
	isWindows := d.Proc("IsWindow")
	counter := 0
	cb := syscall.NewCallback(func(hwnd syscall.Handle, lparam uintptr) uintptr {
		if lparam != 888 {