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Posted: **Sun Feb 09, 2020 6:31 am**

hi,

i found a Solution but not all is clear to me

STATIC caItems := {}                                                  // for GRID
STATIC acImage := {}
STATIC aDrives

change PUBLIC to Field-wide STATIC have help with those Variable

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   nMainThreadID := GetCurrentThreadID()
   HMG_ThreadShareData( 1, Win_1.HANDLE )

   aThread[ 1 ] := hb_threadStart( HB_THREAD_INHERIT_PUBLIC, @Wait4Action() )
   aThread[ 2 ] := hb_threadStart( HB_THREAD_INHERIT_PUBLIC, @DoNothing() )

   AttachThreadInput( nMainThreadID, HMG_ThreadHBtoWinID( aThread[ 1 ] ), .T. )
   AttachThreadInput( nMainThreadID, HMG_ThreadHBtoWinID( aThread[ 2 ] ), .T. )

   CREATE EVENT PROCNAME USB_Detect() HWND Win_1.HANDLE STOREINDEX nIndex
   EventProcessAllHookMessage( nIndex, .T. )

here i have mix some Code ... don´t ask me how it work ... but it work

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FUNCTION Wait4Action()
...
      Fillgrid()
      DO_Image( .T. )

these both use Code like this

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   Win_1.Grid_Device.hide()
   ...
   Win_1.Grid_Device.show()

so now i can go on with HBFM and include USB-Device

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