IDWriteFontFile::GetReferenceKey method (dwrite.h)

Obtains the pointer to the reference key of a font file. The returned pointer is valid until the font file object is released.

Syntax

HRESULT GetReferenceKey(
  [out] void const **fontFileReferenceKey,
  [out] UINT32     *fontFileReferenceKeySize
);

Parameters

[out] fontFileReferenceKey

Type: const void**

When this method returns, contains an address of a pointer to the font file reference key. Note that the pointer value is only valid until the font file object it is obtained from is released. This parameter is passed uninitialized.

[out] fontFileReferenceKeySize

Type: UINT32*

When this method returns, contains the size of the font file reference key in bytes. This parameter is passed uninitialized.

Return value

Type: HRESULT

If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.

Requirements

Requirement Value
Minimum supported client Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps | UWP apps]
Target Platform Windows
Header dwrite.h
Library Dwrite.lib
DLL Dwrite.dll

See also

IDWriteFontFile