当我使用WRL创建winrt组件时,问题是我只能使用ABI::Windows::xxx命名空间,而且我不能Windows::UI::Xaml::Media::Imaging在WRL中使用命名空间.
那么,如何创建内置winrt组件作为返回值?
// idl
import "inspectable.idl";
import "Windows.Foundation.idl";
import "Windows.UI.Xaml.Media.Imaging.idl";
namespace Decoder
{
interface IPhotoDecoder;
runtimeclass PhotoDecoder;
interface IPhotoDecoder : IInspectable
{
HRESULT Decode([in] int width, [in] int height, [out, retval] Windows.UI.Xaml.Media.Imaging.BitmapImage **ppBitmapImage);
}
[version(COMPONENT_VERSION), activatable(COMPONENT_VERSION)]
runtimeclass PhotoDecoder
{
[default] interface IPhotoDecoder;
}
}
// cpp
using namespace Microsoft::WRL;
using namespace Windows::Foundation;
using namespace ABI::Windows::UI::Xaml::Media::Imaging;
namespace ABI
{
namespace Decoder
{
class PhotoDecoder: public RuntimeClass<IPhotoDecoder>
{
InspectableClass(L"Decoder.PhotoDecoder", BaseTrust)
public:
PhotoDecoder()
{
}
HRESULT __stdcall Decode(_In_ int …Run Code Online (Sandbox Code Playgroud)