if e != nil {
		t.Fatal(e)
	}
	return &DLL{DLL: d, t: t}
}

func (d *DLL) Proc(name string) *syscall.Proc {
	p, e := d.FindProc(name)
	if e != nil {
		d.t.Fatal(e)
	}
	return p
}

func TestStdCall(t *testing.T) {
	type Rect struct {
		left, top, right, bottom int32
	}
	res := Rect{}
	expected := Rect{1, 1, 40, 60}
	a, _, _ := GetDLL(t, "user32.dll").Proc("UnionRect").Call(
		uintptr(unsafe.Pointer(&res)),