Canvas mouse position (enter & leave)

[mestnyi]

In windows I observe a strange behavior the position of the canvas mouse when the window has no borders.
Hover over the first window then go to the second window we get the following events.

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enter 1
enter 2
leave 1

The following events were supposed to happen.

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enter 1
leave 1
enter 2

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Procedure   Canvas(gadget)
   Protected color = RGB( Random(255), Random(255), Random(255) )
   CanvasGadget(gadget, 0, 0, 200, 200)    
   StartDrawing(CanvasOutput(gadget))
   DrawingMode(#PB_2DDrawing_Default)
   Box(0,0,OutputWidth(), OutputHeight(), color)
   DrawText(10,10, Str(gadget))
   StopDrawing()
EndProcedure

OpenWindow(1, 110, 110, 200, 200, "", #PB_Window_BorderLess)
Canvas(1)    

OpenWindow(2, 210, 210, 200, 200, "", #PB_Window_BorderLess)
Canvas(2)    

Repeat 
   event = WaitWindowEvent()
   If event = #PB_Event_Gadget
      If EventType() = #PB_EventType_MouseEnter
         Debug "enter "+EventGadget()
      EndIf
      If EventType() = #PB_EventType_MouseLeave
         Debug "leave "+EventGadget()
      EndIf
   EndIf
Until event = #PB_Event_CloseWindow

[mestnyi]

it works correctly through winapi.

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Procedure CallbackHandler(hWnd, uMsg, wParam, lParam) 
   Static enter.b
   Protected text.s, sysProc = GetProp_(hWnd, "sysProc")
   
   Select uMsg
      Case #WM_MOUSEFIRST
         Protected TRACK.TRACKMOUSEEVENT
         TRACK\cbSize = SizeOf(TRACK)
         TRACK\dwFlags = #TME_HOVER|#TME_LEAVE
         TRACK\hwndTrack = hWnd
         TRACK\dwHoverTime = 1
         TrackMouseEvent_(@TRACK)
         
      Case #WM_MOUSELEAVE
         enter = 0
         text = "leave gadget #" + Str(GetDlgCtrlID_(hWnd))
         
      Case #WM_MOUSEHOVER
         If enter = 0
            enter = 1
            text = "enter gadget #" + Str(GetDlgCtrlID_(hWnd))
         EndIf
         
      Case #WM_LBUTTONDOWN
         text = "Left button down on gadget #" + Str(GetDlgCtrlID_(hWnd))
      Case #WM_LBUTTONUP
         text = "Left button up on gadget #" + Str(GetDlgCtrlID_(hWnd))
      Case #WM_LBUTTONDBLCLK
         text = "Left button click on gadget #" + Str(GetDlgCtrlID_(hWnd))
      Case #WM_RBUTTONDOWN
         text = "Right button down on gadget #" + Str(GetDlgCtrlID_(hWnd))
      Case #WM_RBUTTONUP
         text = "Right button up on gadget #" + Str(GetDlgCtrlID_(hWnd))
      Case #WM_RBUTTONDBLCLK
         text = "Right button click on gadget #" + Str(GetDlgCtrlID_(hWnd))
   EndSelect
   
   If text
      Debug text
   EndIf
         
   ProcedureReturn CallWindowProc_(sysProc, hWnd, uMsg, wParam, lParam)
EndProcedure 

Procedure BindCallBack(hWnd)
   Protected sysProc = SetWindowLongPtr_(hWnd, #GWL_WNDPROC, @CallbackHandler())
   SetProp_(hWnd, "sysProc", sysProc)
EndProcedure

Procedure   Canvas(gadget)
   Protected color = RGB( Random(255), Random(255), Random(255) )
   CanvasGadget(gadget, 0, 0, 200, 200)    
   StartDrawing(CanvasOutput(gadget))
   DrawingMode(#PB_2DDrawing_Default)
   Box(0,0,OutputWidth(), OutputHeight(), color)
   DrawText(10,10, Str(gadget))
   StopDrawing()
   BindCallBack(GadgetID(gadget))
EndProcedure

OpenWindow(1, 110, 110, 200, 200, "", #PB_Window_BorderLess)
Canvas(1)    

OpenWindow(2, 210, 210, 200, 200, "", #PB_Window_BorderLess)
Canvas(2)    

Repeat 
   event = WaitWindowEvent()
   If event = #PB_Event_Gadget
      If EventType() = #PB_EventType_MouseEnter
         Debug "enter "+EventGadget()
      EndIf
      If EventType() = #PB_EventType_MouseLeave
         Debug "leave "+EventGadget()
      EndIf
   EndIf
Until event = #PB_Event_CloseWindow

[renmsa]

In your case, it seems that the #PB_EventType_MouseLeave event is delayed for the first window until the second window's #PB_EventType_MouseEnter event is triggered. This may be due to the way Windows handles z-ordering or window focus changes between borderless windows.

Enforcing Window Focus on Hover: You can manually handle the window focus changes by using SetFocus_() or BringWindowToTop_() to force focus when hovering over a window, ensuring that leave events are properly triggered in sequence. If the event sequencesnow rider 3d is critical, consider using a global mouse hook to track the mouse position and manually trigger enter and leave events as needed. This could bypass the default Windows event system, but it's a more advanced and manual approach.

Code: Select all

Procedure Canvas(gadget)
   Protected color = RGB( Random(255), Random(255), Random(255) )
   CanvasGadget(gadget, 0, 0, 200, 200)    
   StartDrawing(CanvasOutput(gadget))
   DrawingMode(#PB_2DDrawing_Default)
   Box(0,0,OutputWidth(), OutputHeight(), color)
   DrawText(10,10, Str(gadget))
   StopDrawing()
EndProcedure

OpenWindow(1, 110, 110, 200, 200, "", #PB_Window_BorderLess)
Canvas(1)    

OpenWindow(2, 210, 210, 200, 200, "", #PB_Window_BorderLess)
Canvas(2)    

Repeat 
   event = WaitWindowEvent()
   If event = #PB_Event_Gadget
      If EventType() = #PB_EventType_MouseEnter
         SetActiveWindow(EventWindow()) ; Enforce focus on mouse hover
         Debug "enter "+Str(EventGadget())
      EndIf
      If EventType() = #PB_EventType_MouseLeave
         Debug "leave "+Str(EventGadget())
      EndIf
   EndIf
Until event = #PB_Event_CloseWindow

[mestnyi]

Have you watched my second example using winapi? So everything works there as expected. So I think this is a bug.
What you suggested is not suitable for me, because on the contrary, I need the second window to never get focus. But I don't know how to do it yet.

[mestnyi]

Who can confirm that this is a bug?