forum.vdsworld.com

FreezingFire · **Admin Team** Joined: 23 Jun 2002 Posts: 3508

Is there any way to hold up Windows from shutting down until your program
closes? For example, when a user logs off or shuts down the computer, the
program will hold up the event and pop up a message box which will ask the
user something?

PGWARE · **Web Host** Joined: 29 Dec 2001 Posts: 1565

I'm not sure in VDS but the Windows api uses WM_QUERYENDSESSION message sent to your window.

http://msdn.microsoft.com/en-us/library/aa376890(VS.85).aspx

If you return a value of false when Windows sends you this message then Windows will not shutdown and wait for your app. It will keep sending this message until your app or any other all return true to allow shutdown.

You likely can use gadgetx to intercept and return a value back to this windows api message.

FreezingFire · **Admin Team** Joined: 23 Jun 2002 Posts: 3508

Awesome, thanks! This looks like it will be just the thing.

vdsalchemist · Posted: Mon Nov 16, 2009 10:33 pm Post subject:

FreezingFire,
I tried to make this work with GadgetX a long time ago and never could get the Return value to stick. This is due to VDS being single threaded and it's event callback function does not allow the user to return a value to the callee. I may give it another shot since you are asking.