https://bugzilla.novell.com/show_bug.cgi?id=389253
Summary: ListBox: exception occurs on setting small height (one
item high etc)
Product: Mono: Class Libraries
Version: 1.9.0
Platform: Other
OS/Version: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Windows.Forms
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
QAContact: [email protected]
Found By: ---
Repro app from bug 389250. Set ListBox to 200 wide (to avoid bug 389250), and
height 40 (to round down to two item 'integral' height of 30 or 32). The first
exception below will occur.
If one sets the height to zero high(!), then on any action the second exception
occurs (Shift+Tab backwards from the height field to the ListBox then
Down-Arrow to move items.
[[
Unhandled Exception: System.DivideByZeroException: Division by zero
at System.Windows.Forms.ListBox.GetItemRectangle (Int32 index) [0x00036] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:807
at System.Windows.Forms.ListBox.GetItemDisplayRectangle (Int32 index, Int32
first_displayble) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1274
at System.Windows.Forms.ListBox.LastVisibleItem () [0x00043] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1350
at System.Windows.Forms.ListBox.LayoutListBox () [0x00039] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1173
at System.Windows.Forms.ListBox.OnResize (System.EventArgs e) [0x00022] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:976
at System.Windows.Forms.Control.OnSizeChanged (System.EventArgs e) [0x00006]
in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:6495
at System.Windows.Forms.Control.UpdateBounds (Int32 x, Int32 y, Int32 width,
Int32 height, Int32 clientWidth, Int32 clientHeight) [0x000ec] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:5138
at System.Windows.Forms.Control.UpdateBounds () [0x0002c] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:5087
at System.Windows.Forms.Control.WmWindowPosChanged
(System.Windows.Forms.Message& m) [0x00012] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:5441
at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message& m)
[0x00164] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:5249
at System.Windows.Forms.ListBox.WndProc (System.Windows.Forms.Message& m)
[0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1135
at System.Windows.Forms.Control+ControlWindowTarget.OnMessage
(System.Windows.Forms.Message& m) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:227
at System.Windows.Forms.Control+ControlNativeWindow.WndProc
(System.Windows.Forms.Message& m) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:208
at System.Windows.Forms.NativeWindow.WndProc (IntPtr hWnd, Msg msg, IntPtr
wParam, IntPtr lParam) [0x00084] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/NativeWindow.cs:240
at System.Windows.Forms.XplatUIX11.SendMessage (IntPtr hwnd, Msg message,
IntPtr wParam, IntPtr lParam) [0x0008d] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:4982
at System.Windows.Forms.XplatUIX11.SetWindowPos (IntPtr handle, Int32 x,
Int32 y, Int32 width, Int32 height) [0x000d4] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:5466
at System.Windows.Forms.XplatUI.SetWindowPos (IntPtr handle, Int32 x, Int32
y, Int32 width, Int32 height) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUI.cs:1066
at System.Windows.Forms.Control.SetBoundsCore (Int32 x, Int32 y, Int32 width,
Int32 height, BoundsSpecified specified) [0x00028] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:4932
at System.Windows.Forms.ListBox.SetBoundsCore (Int32 x, Int32 y, Int32 width,
Int32 height, BoundsSpecified specified) [0x00032] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1066
at System.Windows.Forms.Control.SetBounds (Int32 x, Int32 y, Int32 width,
Int32 height, BoundsSpecified specified) [0x000e8] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:4381
at System.Windows.Forms.Control.set_Height (Int32 value) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:2893
at (wrapper remoting-invoke-with-check)
System.Windows.Forms.Control:set_Height (int)
at TextBoxLines+<>c__CompilerGenerated6.<Main>c__8 (System.Object +5,
System.EventArgs +6) [0x00032] in d:\Documents and Settings\alan\My
Documents\Suppliers\Mono\WinForms\ListControls\ListBoxHeight.cs:57
.. ...
]]
[[
Unhandled Exception: System.DivideByZeroException: Division by zero
at System.Windows.Forms.ListBox.EnsureVisible (Int32 index) [0x000a9] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:2034
at (wrapper remoting-invoke-with-check)
System.Windows.Forms.ListBox:EnsureVisible (int)
at System.Windows.Forms.ListBox+SelectedIndexCollection.AddCore (Int32 index)
[0x000b3] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:2615
at System.Windows.Forms.ListBox+SelectedIndexCollection.Add (Int32 index)
[0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:2590
at System.Windows.Forms.ListBox.set_SelectedIndex (Int32 value) [0x00050] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:516
at System.Windows.Forms.ListBox.SelectedItemFromNavigation (Int32 index)
[0x00027] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1875
at System.Windows.Forms.ListBox.OnKeyDownLB (System.Object sender,
System.Windows.Forms.KeyEventArgs e) [0x0014b] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1648
at System.Windows.Forms.Control.OnKeyDown (System.Windows.Forms.KeyEventArgs
e) [0x0001c] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:6179
at System.Windows.Forms.Control.ProcessKeyEventArgs
(System.Windows.Forms.Message& m) [0x0004a] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:4665
at System.Windows.Forms.Control.ProcessKeyMessage
(System.Windows.Forms.Message& m) [0x0001e] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:4710
at System.Windows.Forms.Control.WmKeys (System.Windows.Forms.Message& m)
[0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:5804
at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message& m)
[0x0020c] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:5364
at System.Windows.Forms.ListBox.WndProc (System.Windows.Forms.Message& m)
[0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/ListBox.cs:1135
at System.Windows.Forms.Control+ControlWindowTarget.OnMessage
(System.Windows.Forms.Message& m) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:227
at System.Windows.Forms.Control+ControlNativeWindow.WndProc
(System.Windows.Forms.Message& m) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Control.cs:208
at System.Windows.Forms.NativeWindow.WndProc (IntPtr hWnd, Msg msg, IntPtr
wParam, IntPtr lParam) [0x00084] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/NativeWindow.cs:240
at System.Windows.Forms.XplatUIX11.DispatchMessage (System.Windows.Forms.MSG&
msg) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUIX11.cs:3293
at System.Windows.Forms.XplatUI.DispatchMessage (System.Windows.Forms.MSG&
msg) [0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/XplatUI.cs:576
at System.Windows.Forms.Application.RunLoop (Boolean Modal,
System.Windows.Forms.ApplicationContext context) [0x00359] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Application.cs:908
at System.Windows.Forms.Application.Run
(System.Windows.Forms.ApplicationContext context) [0x00014] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Application.cs:694
at System.Windows.Forms.Application.Run (System.Windows.Forms.Form mainForm)
[0x00000] in
/usr/local/src/mono/mcs/class/Managed.Windows.Forms/System.Windows.Forms/Application.cs:682
at TextBoxLines.Main () [0x00319] in ListBoxHeight.cs:81
]]
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