Cannot initialize a variable of type 'PTExampleTextFrame *' (aka '_PTExampleTextFrame *') with an rvalue of type 'void *'

[rsms]

Cannot initialize a variable of type 'PTExampleTextFrame *' (aka '_PTExampleTextFrame *') with an rvalue of type 'void *'

[FlorianSchmittDE]

CFAllocatorAllocate returns a value of type void, which can't be assigned to PTExampleTextFrame as its a struct (thats exactly what the error says)

As a quick'n'dirty solution just cast the returned value of the CFAllocatorAllocate as type (struct _PTExampleTextFrame)

So replace this:

PTExampleTextFrame *textFrame = CFAllocatorAllocate(nil, sizeof(PTExampleTextFrame) + length, 0);
  memcpy(textFrame->utf8text, utf8text, length);

with

PTExampleTextFrame *textFrame = (struct _PTExampleTextFrame*) CFAllocatorAllocate(NULL, sizeof(PTExampleTextFrame) + length, 0);