Function

CTFontManagerCreateFontRequestRunLoopSource(_:_:)

Creates a reference to a run loop source used to convey font requests from the Font Manager.

Declaration

func CTFontManagerCreateFontRequestRunLoopSource(_ sourceOrder: CFIndex, _ createMatchesCallback: @escaping (CFDictionary, pid_t) -> Unmanaged<CFArray>) -> CFRunLoopSource?

Parameters

sourceOrder

The order of the created run loop source.

createMatchesCallback

A block to handle the font request.

Return Value

A reference to a CFRunLoopSource object that should be added to the run loop. To stop receiving requests, invalidate this run loop source. Returns NULL on error, in the case of a duplicate requestPortName, or invalid context structure.