CallHook hook - Revision history

Ak120 at 04:22, 20 November 2018

2018-11-20T04:22:59Z

← Older revision		Revision as of 06:22, 20 November 2018
Line 1:		Line 1:
	From comp.os.os2.programmer.misc:		From comp.os.os2.programmer.misc:

	I recently came across this interesting bit of information		I recently came across this interesting bit of information (in "OS/2 for PowerPC API Addendum, of all places):
	(in "OS/2 for PowerPC API Addendum, of all places):

	~~-----------------------------------------------------------~~
	/*******************************************/		/*******************************************/
	/* This hook is called for debugging */		/* This hook is called for debugging */
Line 10:		Line 8:
	/* procedure is about to be called. */		/* procedure is about to be called. */
	/*******************************************/		/*******************************************/

	#define INCL_xxx		#define INCL_xxx
	#include <os2.h>		#include <os2.h>

			HMQ Current; /* Message-queue handle associated with the current thread. */
			HMQ Created; /* Message-queue handle created by the installing thread. */
			PID Pid; /* Process identity of the installing thread. */
			TID Tid; /* Thread identity of the installing thread. */
			SHORT HookType; /* Hook type. */
			PROC HookProc; /* Address of the hook procedure that is about to be called. */
			BOOL f; /* Indicates whether or not the hook HookProc should be called: */

			f = CallHook(Current, Created, Pid, Tid, HookType, HookProc);

	~~HMQ Current; /* Message-queue handle associated with the current thread~~. */		I could really use this function. I have just one little problem, I have no idea what the HK_ constant for this one might be. Before I resort to trial & error, does anyone know what the constant might be?
	~~HMQ Created; /* Message-queue handle created by~~ the ~~installing thread. */~~
	~~PID Pid; /* Process identity of the installing thread. */~~
	~~TID Tid; /* Thread identity of the installing thread~~. */
	~~SHORT HookType; /* Hook type. */~~
	~~PROC HookProc; /* Address of the hook procedure that is about~~ to ~~be called. */~~
	~~BOOL f; /* Indicates whether or not~~ the ~~hook HookProc should~~ be ~~called: */~~

	~~f = CallHook(Current, Created, Pid, Tid, HookType,~~		And just in case someone thinks this was OS/2 PPC specific, there is a symbol called CALLCALLHOOKHOOK in PMWIN.SYM (at least some old version of PMWIN.SYM) along with CALLINPUTHOOK, CALLSENDMSGHOOK etc. so I'm almost certain this functionality has been in OS/2 for quite a while.
	~~HookProc);~~
	~~-----------------------------------------------------------~~

	~~I could really use this function. I have just one little problem,~~
	~~I have no idea what the HK_ constant for this one might be. Before~~
	~~I resort to trial & error, does anyone know what the constant might be?~~

	And just in case someone thinks this was OS/2 PPC specific, there
	is a symbol called CALLCALLHOOKHOOK in PMWIN.SYM (at least some old
	version of PMWIN.SYM) along with CALLINPUTHOOK, CALLSENDMSGHOOK etc.
	so I'm almost certain this functionality has been in OS/2 for quite
	a while.

	~~------------------------------------------------------------~~

	Answer:		Answer:

	#define HK_CALLHOOK 13		#define HK_CALLHOOK 13

149.225.80.46 at 08:49, 27 February 2004

2004-02-27T08:49:12Z

← Older revision		Revision as of 10:49, 27 February 2004
Line 30:		Line 30:
	I resort to trial & error, does anyone know what the constant might be?		I resort to trial & error, does anyone know what the constant might be?

	And just in case someone thinks this was OS/2 PPC specific, there		And just in case someone thinks this was OS/2 PPC specific, there
	is a symbol called CALLCALLHOOKHOOK in PMWIN.SYM (at least some old		is a symbol called CALLCALLHOOKHOOK in PMWIN.SYM (at least some old
	version of PMWIN.SYM) along with CALLINPUTHOOK, CALLSENDMSGHOOK etc.		version of PMWIN.SYM) along with CALLINPUTHOOK, CALLSENDMSGHOOK etc.

Cinc at 07:55, 10 February 2004

2004-02-10T07:55:18Z

← Older revision		Revision as of 09:55, 10 February 2004
Line 40:		Line 40:
	Answer:		Answer:

	#define HK_CALLHOOK 13		#define HK_CALLHOOK 13

Cinc at 07:54, 10 February 2004

2004-02-10T07:54:34Z

New page

From comp.os.os2.programmer.misc:

I recently came across this interesting bit of information
(in "OS/2 for PowerPC API Addendum, of all places):

-----------------------------------------------------------
/*******************************************/
/* This hook is called for debugging */
/* purposes, whenever any other hook */
/* procedure is about to be called. */
/*******************************************/

#define INCL_xxx
#include <os2.h>

HMQ Current; /* Message-queue handle associated with the current thread. */
HMQ Created; /* Message-queue handle created by the installing thread. */
PID Pid; /* Process identity of the installing thread. */
TID Tid; /* Thread identity of the installing thread. */
SHORT HookType; /* Hook type. */
PROC HookProc; /* Address of the hook procedure that is about to be called. */
BOOL f; /* Indicates whether or not the hook HookProc should be called: */

f = CallHook(Current, Created, Pid, Tid, HookType,
HookProc);
-----------------------------------------------------------

I could really use this function. I have just one little problem,
I have no idea what the HK_ constant for this one might be. Before
I resort to trial & error, does anyone know what the constant might be?

And just in case someone thinks this was OS/2 PPC specific, there
is a symbol called CALLCALLHOOKHOOK in PMWIN.SYM (at least some old
version of PMWIN.SYM) along with CALLINPUTHOOK, CALLSENDMSGHOOK etc.
so I'm almost certain this functionality has been in OS/2 for quite
a while.

------------------------------------------------------------

Answer:

#define HK_CALLHOOK 13