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I haven't developed services [yet], but if they receive standard windows messages, maybe trapping WM_USERCHANGED is the way. just my $0.02<br />
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W_Fox
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I haven't developed services [yet], but if they receive standard windows messages, maybe trapping WM_USERCHANGED is the way. just my $0.02

W_Fox

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w Fox is right <br />
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The WM_USERCHANGED message is sent to all windows after the user has logged on or off. When the user logs on or off, the system updates the user-specific settings. The system sends this message immediately after updating the settings. <br />
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WM_USERCHANGED &nbsp;<br />
wParam = 0; &nbsp; &nbsp; &nbsp; // not used, must be zero <br />
lParam = 0; &nbsp; &nbsp; &nbsp; // not used, must be zero 
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w Fox is right

The WM_USERCHANGED message is sent to all windows after the user has logged on or off. When the user logs on or off, the system updates the user-specific settings. The system sends this message immediately after updating the settings.

WM_USERCHANGED  
wParam = 0;       // not used, must be zero
lParam = 0;       // not used, must be zero

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I am writing a service application and would like to know if there is a way to be notified by windows (2000, XP) when a user logs on and off the computer.
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I am writing a service application and would like to know if there is a way to be notified by windows (2000, XP) when a user logs on and off the computer.

getting notification when a users logs on and off

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