Set Next App to Front Most App (Hide/unhide current application)

Hello,

I read a recent discussion (see Set App to Front) about how to bring a Xojo application to the front and… I would like to do the exact opposite.
I need to take a screen shot. So I first hide the application window but I then need to bring the application which is behind my Xojo app to the front so that it gets activated.
I have tried to look for declares but could not implement one.

One solution was to force my application to be “hidden”, but I could not figure out how to go from the Apple Developer Manual (see Apple doc for hide function to a working Declare.
many thanks,
best,
Franck

OK. I understood how to do it so I answer to myself (a bit schizophrenic here…)

Method HideApp
  //Hide the application
  #if TargetCocoa
    declare function NSClassFromString lib "Cocoa" ( inName as CFStringRef ) as Ptr
    declare function sharedApplication lib "Cocoa" selector "sharedApplication" ( classRef as Ptr ) as Ptr
    Dim myApp as Ptr =  sharedApplication( NSClassFromString( "NSApplication" ) )
    declare sub hide lib "Cocoa" Selector "hide:" (id as Ptr)
    hide myApp
  #endif

Use the same snippet using unhide: instead of hide: to show and activate the application

Method UnHideApp
//show the application
  #if TargetCocoa
    declare function NSClassFromString lib "Cocoa" ( inName as CFStringRef ) as Ptr
    declare function sharedApplication lib "Cocoa" selector "sharedApplication" ( classRef as Ptr ) as Ptr
    Dim myApp as Ptr =  sharedApplication( NSClassFromString( "NSApplication" ) )
    declare sub unhide lib "Cocoa" Selector "unhide:" (id as Ptr)
    unhide myApp 
  #endif

I also posted it on Xippet (see xipppet)