PureBasic Forums - English

Posted: **Thu Dec 11, 2025 7:49 pm**

@PeDe
may be, flipbuffer don't work correctly
please run this code and give me the debug

InitSprite():InitMouse():InitKeyboard()
OpenWindow(0,0,0,800,600,"",#PB_Window_ScreenCentered)
OpenWindowedScreen(WindowID(0),0,0,800,600)
CreateSprite(0,128,128)
StartDrawing(SpriteOutput(0))
Circle(64,64,64,$ff)
StopDrawing()

t=ElapsedMilliseconds()
For i=1 To 60
  While WindowEvent():Wend
  ExamineMouse()
  ExamineKeyboard()
  ClearScreen(0)
  DisplaySprite(0,MouseX()-64,MouseY()-64)
  FlipBuffers()
Next

Debug (ElapsedMilliseconds()-t)

Posted: **Thu Dec 11, 2025 8:39 pm**

The output is: 986

Peter

Posted: **Fri Dec 12, 2025 10:24 am**

That makes sense.
Submit a bug report.
(Fred already told me about a problem with the mouse library on Linux.)
As for the compilation issues, I'll talk to him about it.

Posted: **Fri Dec 12, 2025 12:51 pm**

I run Linux as a virtual machine under Parallels (macOS)
Here the MouseDeltaX/Y function also causes problems and is very inaccurate. Thus, all examples with MouseDelta run very badly.
MouseX/Y work well

P.S.
It looks like ScreenGadget Library is used internally for Mouse position MouseDeltaX/Y. Otherwise the problem would not be.
Is it so and why. If necessary, use MouseX/Y absolute position.

PureBasic Forums - English

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Re: PB 6.30 Beta 4 - ScreenGadget library - bug report

Re: PB 6.30 Beta 4 - ScreenGadget library - bug report