diff --git a/windows/foundation/hresult.go b/windows/foundation/hresult.go
new file mode 100644
index 0000000..e651707
--- /dev/null
+++ b/windows/foundation/hresult.go
@@ -0,0 +1,12 @@
+// Code generated by winrt-go-gen. DO NOT EDIT.
+
+//go:build windows
+
+//nolint:all
+package foundation
+
+const SignatureHResult string = "struct(Windows.Foundation.HResult;i4)"
+
+type HResult struct {
+	Value int32
+}
diff --git a/windows/foundation/iasyncinfo.go b/windows/foundation/iasyncinfo.go
new file mode 100644
index 0000000..50ccb83
--- /dev/null
+++ b/windows/foundation/iasyncinfo.go
@@ -0,0 +1,105 @@
+// Code generated by winrt-go-gen. DO NOT EDIT.
+
+//go:build windows
+
+//nolint:all
+package foundation
+
+import (
+	"syscall"
+	"unsafe"
+
+	"github.com/go-ole/go-ole"
+)
+
+const GUIDIAsyncInfo string = "00000036-0000-0000-c000-000000000046"
+const SignatureIAsyncInfo string = "{00000036-0000-0000-c000-000000000046}"
+
+type IAsyncInfo struct {
+	ole.IInspectable
+}
+
+type IAsyncInfoVtbl struct {
+	ole.IInspectableVtbl
+
+	GetId        uintptr
+	GetStatus    uintptr
+	GetErrorCode uintptr
+	Cancel       uintptr
+	Close        uintptr
+}
+
+func (v *IAsyncInfo) VTable() *IAsyncInfoVtbl {
+	return (*IAsyncInfoVtbl)(unsafe.Pointer(v.RawVTable))
+}
+
+func (v *IAsyncInfo) GetId() (uint32, error) {
+	var out uint32
+	hr, _, _ := syscall.SyscallN(
+		v.VTable().GetId,
+		uintptr(unsafe.Pointer(v)),    // this
+		uintptr(unsafe.Pointer(&out)), // out uint32
+	)
+
+	if hr != 0 {
+		return 0, ole.NewError(hr)
+	}
+
+	return out, nil
+}
+
+func (v *IAsyncInfo) GetStatus() (AsyncStatus, error) {
+	var out AsyncStatus
+	hr, _, _ := syscall.SyscallN(
+		v.VTable().GetStatus,
+		uintptr(unsafe.Pointer(v)),    // this
+		uintptr(unsafe.Pointer(&out)), // out AsyncStatus
+	)
+
+	if hr != 0 {
+		return AsyncStatusCanceled, ole.NewError(hr)
+	}
+
+	return out, nil
+}
+
+func (v *IAsyncInfo) GetErrorCode() (HResult, error) {
+	var out HResult
+	hr, _, _ := syscall.SyscallN(
+		v.VTable().GetErrorCode,
+		uintptr(unsafe.Pointer(v)),    // this
+		uintptr(unsafe.Pointer(&out)), // out HResult
+	)
+
+	if hr != 0 {
+		return HResult{}, ole.NewError(hr)
+	}
+
+	return out, nil
+}
+
+func (v *IAsyncInfo) Cancel() error {
+	hr, _, _ := syscall.SyscallN(
+		v.VTable().Cancel,
+		uintptr(unsafe.Pointer(v)), // this
+	)
+
+	if hr != 0 {
+		return ole.NewError(hr)
+	}
+
+	return nil
+}
+
+func (v *IAsyncInfo) Close() error {
+	hr, _, _ := syscall.SyscallN(
+		v.VTable().Close,
+		uintptr(unsafe.Pointer(v)), // this
+	)
+
+	if hr != 0 {
+		return ole.NewError(hr)
+	}
+
+	return nil
+}
diff --git a/winrt.go b/winrt.go
index 406a67d..7dd8468 100644
--- a/winrt.go
+++ b/winrt.go
@@ -5,6 +5,8 @@ package winrt
 //go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.IAsyncOperation`1
 //go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.AsyncOperationCompletedHandler`1
 //go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.AsyncStatus
+//go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.IAsyncInfo
+//go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.HResult
 //go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.DateTime
 //go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.TimeSpan
 //go:generate go run github.com/saltosystems/winrt-go/cmd/winrt-go-gen -debug -class Windows.Foundation.Deferral