System-wide hotkey 2

[ChupaChups]

How can one make hotkey which should be responded by application even when it's not active(i.e. minimized to system tray)

 

[whosrdaddy]

you must implement a global keyboard hook. look here for more info :

http://www.infojet.cz/program/delphi/tips/tip0003.html

cheers

--------------------------------------
What You See Is What You Get

 

[lespaul]

That's a cool tip whosrdaddy. One of the other programs I've seen also uses a hook; can you explain what a hook is and why you would use one (other than this problem)?

Leslie

 

[whosrdaddy]

Hi leslie,

global hooks are commonly used to monitor system wide events. these events are various : keyboard events, mouse events, debug events,etc...
why using them? normally hooks are often used for debugging purposes. viruses are also often active at this level

if you want to find out more about hooks, m$ has a nice site called MSDN :

http://msdn.microsoft.com/library/d...sUserInterface/Windowing/Hooks/AboutHooks.asp

here you'll find all the info...

Cheers,
Daddy

--------------------------------------
What You See Is What You Get

 

[whosrdaddy]

On a side note: to actually use the example at this link

http://www.infojet.cz/program/delphi/tips/tip0003.html

you will need to load this library and call the SetWindowsHookEx function with its handle. look at MSDN for more info :

http://msdn.microsoft.com/library/d...kReference/HookFunctions/SetWindowsHookEx.asp

Cheers,
Daddy

--------------------------------------
What You See Is What You Get

 

[lespaul]

thanks for sharing the info! Perhaps one day I'll need to know something like this!

leslie