[Mono-winforms-list] X11 Scrolling Regressions

Ernesto equistango at gmail.com
Wed Jun 4 13:01:17 EDT 2008 

Ivan N. Zlatev escribió:
> We have two scrolling regressions on X11:
>
> 1) Carlos, your X11 changes cause the first. Check the attached test
> case grab: the scrollbar and scroll up/down fast. You will notice that
> we seem not to redraw properly. I can reproduce this with any
> scrollable control.
>
> 2) Scrolling with the scrollbar's scroll buttons makes it flicker like
> mad during scrolling. It doesn't happen if I scroll by dragging the
> bar.
>
> Cheers,
> Ivan
>   

Maybe this stack trace helps. I'm getting dozens of this when running a 
winforms app:

X11 Error encountered:
 Error: BadWindow (invalid Window parameter)
 Request:     3 (0)
 Resource ID: 0x0
 Serial:      399
 Hwnd:        <null>
 Control:     <null>   at System.Environment.get_StackTrace() in 
/home/usuario/mono/mcs/class/corlib/System/Environment.cs:line 203
  at System.Windows.Forms.XplatUIX11.HandleError(IntPtr display, 
XErrorEvent ByRef error_event) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
1873
  at System.Windows.Forms.XplatUIX11.XGetWindowAttributes(IntPtr , 
IntPtr , XWindowAttributes ByRef )
  at 
System.Windows.Forms.XplatUIX11.GetVisibleRegion(System.Windows.Forms.Control 
c, Rectangle visible_area) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
5011
  at System.Windows.Forms.XplatUIX11.GetTotalVisibleArea(IntPtr handle) 
in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
4970
  at System.Windows.Forms.XplatUIX11.ScrollWindow(IntPtr handle, 
Rectangle area, Int32 XAmount, Int32 YAmount, Boolean with_children) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
4900
  at System.Windows.Forms.XplatUI.ScrollWindow(IntPtr handle, Rectangle 
rectangle, Int32 XAmount, Int32 YAmount, Boolean with_children) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUI.cs:line 
902
  at System.Windows.Forms.TextBoxBase.vscroll_ValueChanged(System.Object 
sender, System.EventArgs e) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/TextBoxBase.cs:line 
2196
  at System.Windows.Forms.ScrollBar.OnValueChanged(System.EventArgs e) 
in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ScrollBar.cs:line 
689
  at System.Windows.Forms.ScrollBar.set_Value(Int32 value) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ScrollBar.cs:line 
609
  at System.Windows.Forms.TextBoxBase.CaretMoved(System.Object sender, 
System.EventArgs e) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/TextBoxBase.cs:line 
2369
  at System.Windows.Forms.TextBoxBase.ScrollToCaret() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/TextBoxBase.cs:line 
836
  at System.Windows.Forms.TextBoxBase.CreateHandle() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/TextBoxBase.cs:line 
986
  at System.Windows.Forms.Control.CreateControl() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
3746
  at System.Windows.Forms.Control.CreateControl() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
3758
  at System.Windows.Forms.Control.WmShowWindow(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
5738
  at System.Windows.Forms.Control.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
5327
  at System.Windows.Forms.ScrollableControl.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ScrollableControl.cs:line 
807
  at System.Windows.Forms.ContainerControl.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ContainerControl.cs:line 
631
  at System.Windows.Forms.UserControl.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/UserControl.cs:line 
150
  at System.Windows.Forms.Control+ControlWindowTarget.OnMessage(Message 
ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
227
  at System.Windows.Forms.Control+ControlNativeWindow.WndProc(Message 
ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
208
  at System.Windows.Forms.NativeWindow.WndProc(IntPtr hWnd, Msg msg, 
IntPtr wParam, IntPtr lParam) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/NativeWindow.cs:line 
240
  at System.Windows.Forms.XplatUIX11.SendMessage(IntPtr hwnd, Msg 
message, IntPtr wParam, IntPtr lParam) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
5100
  at 
System.Windows.Forms.XplatUIX11.CreateWindow(System.Windows.Forms.CreateParams 
cp) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
2745
  at 
System.Windows.Forms.XplatUI.CreateWindow(System.Windows.Forms.CreateParams 
cp) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUI.cs:line 
475
  at 
System.Windows.Forms.NativeWindow.CreateHandle(System.Windows.Forms.CreateParams 
cp) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/NativeWindow.cs:line 
167
  at System.Windows.Forms.Control.CreateHandle() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
4449
  at System.Windows.Forms.Control.CreateControl() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
3746
  at System.Windows.Forms.Control.CreateControl() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
3758
  at System.Windows.Forms.Control.WmShowWindow(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
5738
  at System.Windows.Forms.Control.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
5327
  at System.Windows.Forms.ScrollableControl.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ScrollableControl.cs:line 
807
  at System.Windows.Forms.ContainerControl.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ContainerControl.cs:line 
631
  at System.Windows.Forms.Form.WndProc(Message ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Form.cs:line 
2535
  at System.Windows.Forms.Control+ControlWindowTarget.OnMessage(Message 
ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
227
  at System.Windows.Forms.Control+ControlNativeWindow.WndProc(Message 
ByRef m) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
208
  at System.Windows.Forms.NativeWindow.WndProc(IntPtr hWnd, Msg msg, 
IntPtr wParam, IntPtr lParam) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/NativeWindow.cs:line 
240
  at System.Windows.Forms.XplatUIX11.SendMessage(IntPtr hwnd, Msg 
message, IntPtr wParam, IntPtr lParam) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
5100
  at System.Windows.Forms.XplatUIX11.MapWindow(System.Windows.Forms.Hwnd 
hwnd, WindowType windows) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
1442
  at 
System.Windows.Forms.XplatUIX11.CreateWindow(System.Windows.Forms.CreateParams 
cp) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:line 
2743
  at 
System.Windows.Forms.XplatUI.CreateWindow(System.Windows.Forms.CreateParams 
cp) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUI.cs:line 
475
  at 
System.Windows.Forms.NativeWindow.CreateHandle(System.Windows.Forms.CreateParams 
cp) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/NativeWindow.cs:line 
167
  at System.Windows.Forms.Control.CreateHandle() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
4449
  at System.Windows.Forms.Form.CreateHandle() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Form.cs:line 
1938
  at System.Windows.Forms.Control.CreateControl() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
3746
  at System.Windows.Forms.Control.SetVisibleCore(Boolean value) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
5020
  at System.Windows.Forms.Form.SetVisibleCore(Boolean value) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Form.cs:line 
2392
  at System.Windows.Forms.Control.set_Visible(Boolean value) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:line 
3399
  at System.Windows.Forms.Application.RunLoop(Boolean Modal, 
System.Windows.Forms.ApplicationContext context) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Application.cs:line 
795
  at System.Windows.Forms.Form.ShowDialog(IWin32Window owner) in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Form.cs:line 
1747
  at System.Windows.Forms.Form.ShowDialog() in 
/home/usuario/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Form.cs:line 
1672
  at Lazaro.Aplicacion.IniciarNormal()
  at Lazaro.Aplicacion.Main(System.String[] args)

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