There a sample in solutions in VFP8 and later how to do that. One of the way to get to it is to launch

DO HOME() + [\samples\solution\solution.app]

Expand 'New in VFP 8' and scroll down to 'System Tray icon example'.

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>Whould you help me how to make an VFP application always running in SysTry (like any TSR apps) even after user logs off.
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