first commit

windows/storage/streams/buffer.go

@@ -0,0 +1,79 @@
+// Code generated by winrt-go-gen. DO NOT EDIT.
+
+//go:build windows
+
+//nolint:all
+package streams
+
+import (
+	"syscall"
+	"unsafe"
+
+	"github.com/go-ole/go-ole"
+)
+
+const SignatureBuffer string = "rc(Windows.Storage.Streams.Buffer;{905a0fe0-bc53-11df-8c49-001e4fc686da})"
+
+type Buffer struct {
+	ole.IUnknown
+}
+
+func (impl *Buffer) GetCapacity() (uint32, error) {
+	itf := impl.MustQueryInterface(ole.NewGUID(GUIDIBuffer))
+	defer itf.Release()
+	v := (*IBuffer)(unsafe.Pointer(itf))
+	return v.GetCapacity()
+}
+
+func (impl *Buffer) GetLength() (uint32, error) {
+	itf := impl.MustQueryInterface(ole.NewGUID(GUIDIBuffer))
+	defer itf.Release()
+	v := (*IBuffer)(unsafe.Pointer(itf))
+	return v.GetLength()
+}
+
+func (impl *Buffer) SetLength(value uint32) error {
+	itf := impl.MustQueryInterface(ole.NewGUID(GUIDIBuffer))
+	defer itf.Release()
+	v := (*IBuffer)(unsafe.Pointer(itf))
+	return v.SetLength(value)
+}
+
+const GUIDiBufferFactory string = "71af914d-c10f-484b-bc50-14bc623b3a27"
+const SignatureiBufferFactory string = "{71af914d-c10f-484b-bc50-14bc623b3a27}"
+
+type iBufferFactory struct {
+	ole.IInspectable
+}
+
+type iBufferFactoryVtbl struct {
+	ole.IInspectableVtbl
+
+	BufferCreate uintptr
+}
+
+func (v *iBufferFactory) VTable() *iBufferFactoryVtbl {
+	return (*iBufferFactoryVtbl)(unsafe.Pointer(v.RawVTable))
+}
+
+func BufferCreate(capacity uint32) (*Buffer, error) {
+	inspectable, err := ole.RoGetActivationFactory("Windows.Storage.Streams.Buffer", ole.NewGUID(GUIDiBufferFactory))
+	if err != nil {
+		return nil, err
+	}
+	v := (*iBufferFactory)(unsafe.Pointer(inspectable))
+
+	var out *Buffer
+	hr, _, _ := syscall.SyscallN(
+		v.VTable().BufferCreate,
+		uintptr(unsafe.Pointer(v)),    // this
+		uintptr(capacity),             // in uint32
+		uintptr(unsafe.Pointer(&out)), // out Buffer
+	)
+
+	if hr != 0 {
+		return nil, ole.NewError(hr)
+	}
+
+	return out, nil
+}