Here's a little WIP pic of Flexi Windows,  I going to just port the old DB version, we were working on to PB , but decided it'd be a lot easier / better to re-write it.    

Features.
  * Windows Can Custom Palettes
  * Windows have basic  Style pref's  (close,Min & max Gadgets)  

To Do,
  * Screen  (So you can define a parent Screen as the PB display)
  * Window management (clicking, dragging, odering..)

Another picture. I've been working on the rendering to the window objects.

This picture shows a bounding window with 1500 (z buffered) stars in it. So basically you can create a window and attach a camera to it, and just sit back and watch.. But you guys new that :)


Here's the demo code (without the library)

 MyWindow=FlexiCreate("win",320,200)
 FlexiPosition(MyWindow,100,200)
 FlexiOpen(MyWindow)

 MyPalette=FlexiNewPalette()
 FlexiSetPalettePens(MyPalette,rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb())

 cl=rgb(20,50,250)
 cr=rgb(255,100,200)
 FlexiSetPaletteTitle(MyPalette,cL,cR,$ffff80)
 FlexiState.CurrentPalette=MyPalette

 MyWindow2=FlexiCreate("win",220,100)
 FlexiPosition(MyWindow2,400,100)
 FlexiSetTitle(myWindow2,"Camera Based Stars")

 FlexiOpen(MyWindow2)


 MyPalette=FlexiNewPalette()
 FlexiSetPalettePens(MyPalette,rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb())
 FlexiState.CurrentPalette=MyPalette


 MyWindow3=FlexiCreate("win",250,200)
 FlexiPosition(MyWindow3,rnd(GetScreenWidth()-200),Rnd(GetScreenHeight()-200))
 FlexiOpen(MyWindow3)


FlexRenderTo(mYwindow3)
   For lp=0 to 10
  ink rndrgb()
  text rnd(150),rnd(200),"Hello World"
   next


   flexrenderto(mywindow2)
   Gosub init_world_buffers 

   w2xd#=2
   w2yd#=3

   Do
  rendertoscreen

   ; shade the backdrop so it fades a little while the demo is running
  FadeAngle#=wrapangle(fadeangle#,2)
  c=$204020
  c1=rgbfade($80c030,75+cos(fadeangle#)*25)
  c2=rgbfade($80c030,75+sin(fadeangle#)*25)
  c1=rgbfade($2040f0,75+cos(fadeangle#)*25)
  shadebox 0,0,getscreenwidth(),getscreenheight(),c,c2,c1,c2
  setcursor 0,0
  text 0,0,fps()



  
  
  x=MOd(FlexiGetX(MyWindow)+1,GetScreenWidth())
  y=MOd(FlexiGetY(MyWindow)+2,GetScreenHeight())
  FlexiPosition(MyWindow,x,y)


     x=mousex()
     y=mousey()
     FlexiPosition(MyWindow3,x,y)
  

  FlexRenderTo(mYwindow3)


   ; Buonce Window #2 around the screen

  FlexRenderTo(MyWindow2)

  Width=FlexiGetWidth(MyWindow2)
  Height=FlexiGetHeight(MyWindow2)

  x#=FlexiGetX(MyWindow2)+w2xd#
  y#=FlexiGetY(MyWindow2)+w2yd#

  if x#<=0 or (x#+width)=>getScreenWidth() then w2xd#=-w2xd#
  if y#<=0 or (y#+height)=>getScreenheight() then w2yd#=-w2yd#

  FlexiPosition(MyWindow2,x#,y#)  

   ; rener the stars to ths window
  gosub Process_Stars:

  
  rendertoscreen



  FlexiRender()

  Sync
   Loop





init_world_buffers: 
 
  W=FlexiGetWidth(MyWindow2)
  H=FlexiGetHeight(MyWindow2)

   CreateCamera 1
;   CameraCls 1,Off

   BUffers=6
   Dim Stars#(BUffers)
   Stars=250 
   C=$ffffff
    FadeStep#=50.0/Buffers
   For CurrentBuffer=1 To Buffers
  CreateWorldBuffer CurrentBUffer
 
  col=RGBFade(c,100-((buffers+1)-CurrentBuffer)*FadeStep#)    
  Stars#(BUffers)=Rnd(w)
     
   ; TEll PB To redirect all GFX output To the World buffer we Select
     CaptureToWorld CurrentBuffer
         CaptureDepth (buffers*10)-(currentbuffer*2)
            
       For lp =0 To Stars
       X=Rnd(w)
       y=Rnd(h)
        DotC x,y,Col
        DotC x+w,y,Col
       Next 
 
  Next CurrentBuffer
   DrawGFXImmediate
 return


Process_Stars:
    CaptureToScene    
    ClsScene
  For CurrentBuffer=1 To Buffers
     x#=Stars#(CurrentBuffer)
      PositionCameraX 1,X# 
    CameraGrabWorldAt 1,CurrentBuffer,00,0,0
      x#=x#+(CurrentBuffer*1.10)

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Update:

Working on the users control functions.  So far, you can click a window to front,  move it and drag a resize region.. It's all pretty painless, and much like every other gui library out there..


Events:

 The next issue it how events are handled.   Not really sure what direction i'll take for these.  

 I pretty much want the library to take care of it, but since the widows will require redrawing (from some events) by the user,  I need soem way of allow the user and library to work side by side..  Just not sure how to do it  :)

Here's the demo code again..  I've added an event stack to some of the functions..  while most things will generate an event on the stack, there's two basic types those for the GUI and those for the user.    This means that user has to have a processing loop to manage events.. Which is nothing more than loop through the stack...

 When something is created, two events are spawned..  A Create and a USERredraw.. in that order.  You can see how to trap these in the code bellow..  But it's about the best i could come up with for the moment.  (we need function pointers)

 Anyway, this version has click to front,  resizing , dragging  the works..   Sadly there's a bug in the deleteWorld Buffer command making it crash if you resize the stars window.  But it does look pretty cool

 MyWindow=FlexiCreate("win",320,200)
 FlexiSetTitle(myWindow3,"Blank Window")

 FlexiPosition(MyWindow,100,200)
 FlexiOpen(MyWindow)

 MyPalette=FlexiNewPalette()
 FlexiSetPalettePens(MyPalette,rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb())

 cl=rgb(20,50,250)
 cr=rgb(255,100,200)
 FlexiSetPaletteTitle(MyPalette,cL,cR,$ffff80)
 FlexiState.CurrentPalette=MyPalette

 MyWindow2=FlexiCreate("win",220,100)
 FlexiPosition(MyWindow2,400,100)
 FlexiSetTitle(myWindow2,"Camera Based Stars")

 FlexiOpen(MyWindow2)


 MyPalette=FlexiNewPalette()
 FlexiSetPalettePens(MyPalette,rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb(),rndrgb())
 FlexiState.CurrentPalette=MyPalette


 MyWindow3=FlexiCreate("win",250,200)
 FlexiSetTitle(myWindow3,"Hello World")

 FlexiPosition(MyWindow3,rnd(GetScreenWidth()-200),Rnd(GetScreenHeight()-200))
 FlexiOpen(MyWindow3)





   w2xd#=2
   w2yd#=3

   Do
  rendertoscreen

 cls 0
  setcursor 0,0
  print fps()



; Call Update Events to get 
  FlexiUpdateEvents()


; Process GUI and User Events 
 
  For EventIndex=0 to FlexiState.EventStackSize-1
     EventType=FlexiEvents(EventIndex).EventType
     Select EventType
   
    case FlexEvent_UserRedraw

       ThisObject=FlexiEvents(EventIndex).ThisObject
       Select ThisObject

      case MyWindow3          
         FlexRenderTo(ThisObject)
         w,h=FlexiGetSIze(thisObject)
         For lp=0 to 10
           ink rndrgb()
           text rnd(w),rnd(h),"Hello World"
         next

      Case MyWindow2
         
         flexrenderto(mywindow2)
         Gosub init_world_buffers 
         
       EndSelect




    default
       FlexiProcessEvent(EventIndex)
     endselect
  next

; Flush/clear the Event stack 
  FlexiFlushEvents()

  
; rener the stars to ths window
  gosub Process_Stars:

  rendertoscreen

  ink $ffffff
  print   FlexiState.MouseOverWindow
  
  FlexiRender()

  dotc mousex(),mousey(),$ff00ff
  
  Sync
   Loop





init_world_buffers: 
 
   deleteAllcameras   
;   if GetCameraStatus(1)
;     DeleteCamera 1
;   endif   

   W=FlexiGetWidth(MyWindow2)
   H=FlexiGetHeight(MyWindow2)

   CreateCamera 1
;   CameraCls 1,Off

   BUffers=6
   Dim Stars#(BUffers)
   Stars=250 
   C=$ffffff
    FadeStep#=50.0/Buffers
   For CurrentBuffer=1 To Buffers
  if GEtWorldBUfferstatus(CurrentBuffer)=true
    DeleteWorldBUffer CurrentBuffer
  endif
  
  CreateWorldBuffer CurrentBUffer
 
  col=RGBFade(c,100-((buffers+1)-CurrentBuffer)*FadeStep#)    
  Stars#(BUffers)=Rnd(w)
     
  ; TEll PB To redirect all GFX output To the World buffer we Select
     CaptureToWorld CurrentBuffer
         CaptureDepth (buffers*10)-(currentbuffer*2)
            
       For lp =0 To Stars
       X=Rnd(w)
       y=Rnd(h)
        DotC x,y,Col
        DotC x+w,y,Col
       Next 
 

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Well fixed the World Buffer delete problem and it now works like a charm...

Flexi Demo V0.04


  Here a demo of Flex in it's current state,  the main thing missing is the minimize and maximize controls, but close works.   Most of stuff is rendering real time others are cache update redraw events.

  The logo is from the original DB version of Flex, which is by Kohai.  We were writing a GUI for a world editor we'd planned on writing after Visible Worlds.   But Play Basic got in the way :)  

  Download Flexi Gui Demo V0.04 (740k) (login required)

Kevin, that is awesome!  I'm very amazed :)

One thing I noticed is it only brings a window to the foreground if you click inside, not if you click on the titlebar.  That could be by design, though.

Funny you should mention that, it's one of those "should it, or shouldn't It?" questions i've been asking myself all day.

 Changing it is simple enough though

 Added a gadget hi-light thing and made the win maximize gadget active.  I've pretty run out of time, to get anything else in at the moment.  But it's   sorta useful ATM..

Update V0.06

 Been toying with adding a task bar which will hold minimized windows.   Much like how windows does.  

Anyway, i've given myself about 2 hours to complete whats left, so I can move onto the project this was written for..  :)

update v0.07

 * Added Task Bar (sorta)
 * User definable window gadgets
 * Windows can now be set to auto refresh.   So you can use your core 'select/case '  basically auto run the gui..

Notice the resizable clock window.  This window is running from an GUI generated event.  So it basically set and forget !

What will this be in the end?  PlayGUI on steroids?  :)

Without the Gadgets :)


 So you think, clicking on the title should POP the wiondow to front always ? (like window )

QuoteWithout the Gadgets :)


  So you think, clicking on the title should POP the wiondow to front always ? (like window )

Yes, I think the title bar should pop it to the front.  If you release the source to the full version then it shouldn't be hard to modify the code ourselves if you have no time :)

Yeah, it's open source of course. You know it's mess right ? :).. anyway   It'll come with the next update though so you'll just have to wait.  


 Ok then, now any click on the window pop's it to front.

 In terms of events,

  At the moment, All I have one main User REDRAW event.   When you resize a window, maximize, etc  this throws two events on the event stack.    A ReSize and a USERREdraw..   So you can trap that the window has change and needs updating..

 But i think there shuold be a UserReDraw and A UserReSize, USerCreate,UserDelete, UserMaximize, UserMinimize..   UserCLick etc  

 I think that'd give better control ..  as at the momemt the timed auto event stuff throws a user Redraw on the event stack.  same as when you resize...  But there really two different situations..  

 Might speend a bit more time cleaning it up, rather than just hacking my demo together..