IDWriteFactory::RegisterFontCollectionLoader Method

Registers a custom font collection loader with the factory object.

Syntax

virtual HRESULT RegisterFontCollectionLoader(
  IDWriteFontCollectionLoader * fontCollectionLoader
) = 0;

Parameter

• fontCollectionLoader
  Pointer to a IDWriteFontCollectionLoader object to be registered.

Rückgabewert

Ist Methode erfolgreich, wird "S_OK" zurückgegeben. Andernfalls wird ein HRESULT-Fehlercode zurückgegeben.

Hinweise

This function registers a font collection loader with DirectWrite. The font collection loader interface, which should be implemented by a singleton object, handles enumerating font files in a font collection given a particular type of key. A given instance can only be registered once. Succeeding attempts will return an error, indicating that it has already been registered. Note that font file loader implementations must not register themselves with DirectWrite inside their constructors, and must not unregister themselves inside their destructors, because registration and unregistraton operations increment and decrement the object reference count respectively. Instead, registration and unregistration with DirectWrite of font file loaders should be performed outside of the font file loader implementation.

Anforderungen

Siehe auch

IDWriteFactory

Custom Font Sample