Error 0x8004023B

Value: -2147220933 | 0x8004023B | 2147746363

What does it mean ?

VFW_E_IN_FULLSCREEN_MODE  
DirectShow: Cannot call IVideoWindowmethods while in full-screen mode.
Value: 571 | 0x023B | 0b0000001000111011

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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