Help/Support Few Objective-C Questions!

[niro 1.2k 9 9.1.0]

hey, so I've been out of the 'creating tweaks' game for awhile and I have some questions that I either can't figure out or things I just don't understand. hopefully someone can clear these up for me.

 

What is MSHook / MSHookIvar useful for, how do I know what to call in order to use it properly?

 

How can I call instance methods from other classes / headers and use them in an existing function.

example;

 

1.h

-(id)username;

 

2.h

-(void)sendMessageTo:(id)arg1;

 

arg1 = ?? (how can I make it -(id)username from 1.h)

 

 

What is the difference between .mm and .xm files and how are each helpful? in some open source tweaks I see that the Tweak.xm only contains Tweak.mm, why? (are they helpful with sandboxed tweaks?)

 

how do I properly use the %c(Class_Here) functions / method?

 

 

sorry for all the questions, I've looked places and can't find the answers relating to the jailbreak side of things!

 

if you know any / one feel free to comment! you don't need to answer all

 

thanks again