NAME
- CallHookA
-
Invoke a hook given a pointer to a message.
SYNOPSIS
FUNCTION
Invoke a hook on the supplied hook-specific data (an "object") and a parameter packet ("message"). This function is equivalent to utility.library/CallHookPkt().
INPUTS
- hookPtr
-
A system-standard hook
- obj
-
Hook-specific data object
- message
-
The hook-specific message you wish to send
RESULT
- result
-
a hook-specific result.
NOTES
This function first appeared in the V37 release of amiga.lib. However, it does not depend on any particular version of the OS, and works fine even in V34.
This function does not preserve the contents of register A4, which is the responsibility of the hook function being called. If your code depends upon the contents of register A4 to remain unchanged you may need to use your own CallHook/CallHookA implementation instead of the amiga.lib version.
This function does not preserve the contents of register A4, which is the responsibility of the hook function being called. If your code depends upon the contents of register A4 to remain unchanged you may need to use your own CallHook/CallHookA implementation instead of the amiga.lib version.