Windows dll metadata

I wanted to run downlevel on 10, so linking was okay for quick testing but not for the final code. I couldn't find the DLL so I asked riverar ; he looked at win32metadata and got kernel Currently I'm probing kernelbase. Could be tooling is misidentifying this legacy kernel32 fractional support of the APIset just and presuming it means all versions?

Thanks for the investigation. Also, which. Yes, apparently docs used to list header, lib and dll but now just header. I don't know why or when that happened but I too am saddened by it. No need to switch. Both work and produce the same result. APIsets are implemented as a library that's 'hosted' by a dll that api They were invented in Vista to give Windows a way to refactor APIs things had gotten quite messy by that point in terms of implementation and layering e.

If you call some function exported by, say, advapi I'm not aware of any guidance on when to use kernelbase vs api And we no longer have implicit guidance public documentation mentioning. I don't recommend apisets as they make it harder to build apps that run on older versions of Windows where they may not be available. Neither kernelbase. I generally prefer avoiding linking to onecore.

Tried looking at the exports of all. Lib , windowscoreheadless. Lib , all of which also export plenty of other stuff. The app in question supports Windows 10 as minimum OS, so API sets themselves not being available is not a major issue. Linking onecore. This looks like a bug in the lib in the public SDK. But we could make the metadata do the right thing and use kernelbase instead of kernel Third-party WinMD files may contain code. Empty WinMD files are technically valid.

The name without extension of a WinMD file must be a case-insensitive match to the name column of the assembly table inside the WinMD file. For example, the "Foo.

Bar" in the name column of the assembly table. Because the file system is case-insensitive, the case of the file name may differ from the assembly table name column value. Because the file system is case-insensitive, the case of the file name may differ from the namespace of all the WinRT types in a given WinMD file.

The namespace of all the WinRT types in a given WinMD must match the assembly table name column value exactly that is, case-sensitively. For example, all of the types in the file with "Foo. Bar" in the assembly table's name column must be in the "Foo. Bar" namespace. The types may be either direct children of this namespace for example, Foo. MyType , or in sub-namespaces of this namespace for example, Foo.

The name of the file must be "Foo. WINMD" would also be permitted as file names for this metadata file. The metadata for all the types in the system is spread across multiple. An AppX package can include zero or more. Across all the. All types that are direct children of a given namespace must be located in the same file. For example, if an AppX package includes Foo.

MyType type must be located in the Foo. Metadata files provided by the system never reference TypeDefs directly. Even when referencing a type that's defined in the same metadata file, system metadata files always reference a TypeRef that in turn references the TypeDef. Third-party metadata files may use TypeDef directly, or may redirect all type references through a TypeRef similar to how system metadata files do.

All types in this document from the System namespace from the mscorlib assembly are used as markers by WinRT. These types are used to indicate information about types, and should never be resolved.

This includes but is not limited to System. Object, System. Guid, System. ValueType, System. Enum, System. MulticastDelegate, and System.

Note that these names were chosen for compatibility with CLR. Note that many of the constructs described here use C syntax. The actual constructs are pure CLI metadata constructs. WinRT encodes a type's namespace and local name in a single period-delimited string. For example, the type defined in this snippet of code is "Windows.

For space optimization, the TypeDef table in CLI metadata provides separate columns for type name and namespace name. These constant values are described in Partition 2, Section Guid type from the mscorlib assembly. An enum has a single instance field that specifies the underlying integer type for the enum, as well as zero or more static fields; one for each enum value defined by the enum type. Thank you. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Defines the attributes that indicate fundamental properties of Windows Runtime types and members. Enables developers to expose a native Universal Windows Platform UWP object as a global parameter in the context of the top-level document inside of a WebView. Enables you to detect whether a specified member, type, or API contract is present so that you can safely make API calls across a variety of devices.

NET This type appears as System. Indicates that a method is the default overload method. This attribute must be used with OverloadAttribute. Indicates that a type or member should be marked in metadata as deprecated. Compilers and other developer tools can read this attribute and provide info to the user about the deprecation type and possible alternates. Indicates that a type or member should be marked in metadata as experimental, and consequently may not be present in the final, released version of an SDK or library.

Indicates the GUID for the interface or delegate. Indicates that the type is an instance of a variant IInspectable. Applies to runtime classes, interfaces, and parameterized interfaces. Indicates that a type or member should be marked in metadata as internal to the SDK or framework, and for consumption by system components only.