Need a System-Wide Hook DLL

[dw85745]

Anyone have a DLL which will handle all the different WH hooks they are willing to post or send me via email?

Thanks
David

[Patoooey]

http://vbaccelerator.com/codelib/hook/vbalhook.htm

[jim mcnamara]

Just a note - when you implement a system-wide hook, you are entering a kind of time warp.

You're essentially turning windows into Windows 3.11

What I mean is if your process hangs, the whole system hangs.
You can't do ctl-alt-del to kill off the hung process. This has severe implications for development - ie., if you screw up you have to reboot. If your code has a bug, the user gets to reboot and lose 3 hours of document entry into Word (or whatever).

[dw85745]

Thanks for posts.

Will check out file Patoooey.

Jim:

Interesting comment re: win 3.1. Are you sure of this. There are about 15 different hooks you can make in the O/S and each one does something a little different. Never used a system-wide however so time will tell. WIll approach with caution -- saving frequently!!!

My case shouldn't matter as want to quickly hook another process to minimize app and then exit.

[Patoooey]

Yes.....system wide hooks are a "feast or famine" kind of thing. If you do it, do it like you mentioned. Hook, do quick work, un-hook.

My understanding is the code/dll on that link doesn't block the 3-finger salute and you can specify which messages to capture which makes things a little less scarey.

Never tested it so your on your own.

[dw85745]

Patoooey:

Have you ever used vbAccelerators Hook DLL.
Looking at *.rtf file indicates it support WH_CBT
but when I use it I get a GPF.

If you have, and are willing, will post code for a
quick looksee.

Thanks
David

[Patoooey]

I've never used it but I thought the WH_CBT hook was intended for computer based training programs and was never used for some reason ??

Any other hook work ??

[dw85745]

Your right about training but also has other uses.

Only hook I know which will trap window before it is created.
so you can send message to modify window. My case
Show it minimized.

[SeaHag]

sorry for budding in.. What are you talking about?>
SeaHag

[dw85745]

No Butting. Glad to have any constructive input.

Trying to locate a DLL which will support systemwide
hooking for all 14/15 hooks.

Patoooey suggested vbAccelerator site. Downloaded their
DLL, but when try to use it systemwide with WH_CBT
get a GPF.

Ultimate objective is this:

Have an out of process app that I call their DLL through their OCX
by "XYZ.Start". Once started their App does shows above mine
until I minimize it. Want to hook their app before window creation so that I can minimize it prior to it showing.

Currently, use Window Title then minimize but this is after window is created so it show for about 10-15 seconds on top of mine.

[SeaHag]

Wowsers..
Whats a Hook?

[dw85745]

Hope no offense will be taken, but recommend you click Patoooey's link to vbAccelerator-- they do a great job
explaining it.

[SeaHag]

OK KOOL

[dw85745]

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[dw85745]

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