Block sleep and power keyboard buttons.

[valyo]

Hello,
I need to prevent the system get shouted down or locked when pressing POWER or SLEEP button. It should be done from a program - not by changing settings from Control Panel or mmc console. I wrote a simple kbd hook, catch vk_sleep and did not pass it further on in chain, but only this does not works - the system was locked, nevertheless log file points the key was caught?!
Can anybody help me on this ? tnx!!!

[Raymond]

Are you asking help on programming? Or a program to disable the sleep and power button on keyboard?

Here are some programs which you can disable the sleep and power keys.
http://www.raymond.cc/blog/archives/2007/12/12/make-certain-keys-on-a-keyboard-to-act-like-other-keys/

[valyo]

Hello Raymond - thanks for your replay - I need source example or hint? The situation is such that I can not use your excellent tools ...

[Raymond]

Sorry, I can't help you in programming :P
I am a tech guy.

[valyo]

For those who may need to block Power and Sleep buttons from their programs :
The solution wiht low level keyboard hook does not work on XP SP2. instead this works :


Inside the window procedure, where you switch on message you need to handle the WM_POWERBROADCAST and return BROADCAST_QUERY_DENY to prevent system to be shut down on locked.

{   
     switch (message)
     {
        case WM_POWERBROADCAST:
        {
            int ret =1;

          if ( wParam == PBT_APMQUERYSUSPEND || wParam == PBT_APMQUERYSTANDBY )
              return BROADCAST_QUERY_DENY; 
          else
             return TRUE;
        }break;
   ............	
     }