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IDWriteFactory::UnregisterFontFileLoader method

Unregisters a font file loader that was previously registered with the DirectWrite font system using RegisterFontFileLoader.

Syntax


virtual HRESULT UnregisterFontFileLoader(
  IDWriteFontFileLoader * fontFileLoader
) = 0;

Parameters

fontFileLoader

Type: IDWriteFontFileLoader*

Pointer to the file loader that was previously registered with the DirectWrite font system using RegisterFontFileLoader.

Return value

Type: HRESULT

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

Remarks

This function unregisters font file loader callbacks with the DirectWrite font system. You should implement the font file loader interface by a singleton object. Note that font file loader implementations must not register themselves with DirectWrite inside their constructors and must not unregister themselves in their destructors, because registration and unregistraton operations increment and decrement the object reference count respectively. Instead, registration and unregistration of font file loaders with DirectWrite should be performed outside of the font file loader implementation.

Requirements

Minimum supported client

Windows 7, Windows Vista with SP2 and Platform Update for Windows Vista [desktop apps | Windows Store apps]

Minimum supported server

Windows Server 2008 R2, Windows Server 2008 with SP2 and Platform Update for Windows Server 2008 [desktop apps | Windows Store apps]

Minimum supported phone

Windows Phone 8.1 [Windows Phone Silverlight 8.1 and Windows Runtime apps]

Header

Dwrite.h

Library

Dwrite.lib

DLL

Dwrite.dll

See also

IDWriteFactory

 

 

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