I think there a t least 3 problems reported here
Concerning the following problem
>System.NullReferenceException: Object reference not set to an instance of an
>object
> at System.Windows.Forms.ListView+ItemControl.ItemsMouseDown (System.Object
> sender, >System.Windows.Forms.MouseEventArgs me) [0x00000] in <filename
> unknown>:0
Other mentionned bugs should have been reported elsewhere for other bugs
(duplicates ?)
Ubuntu 15.04
+ OpenBVE 1.4.0.9-1 as installed
I reproduce this bug each time i try to select a route with the mouse (not with
the keyboard)
After having tried to localize the problem with monoDevelop, i think
i've found something that could cause the problem
When i read the source code, i see
OpenBve/OldCode/formMain.Start.cs,
private void ShowRoute(bool UserSelectedEncoding) {
if (Result.RouteFile != null) {
this.Cursor = Cursors.WaitCursor;
Application.DoEvents();
]...[
C# Microsoft documentation suggests this code (Application.DoEvent call ) could
cause problems
https://msdn.microsoft.com/en-US/library/system.windows.forms.application.doevents%28v=vs.110%29.aspx
You will find many posts on many forums about this topic
>Calling this method causes the current thread to be suspended while all
waiting window messages are processed. If a message >causes an event to
be triggered, then other areas of your application code may execute.
This can cause your application to >exhibit unexpected behaviors that
are difficult to debug.
What i see is that removing this instruction (Application.DoEvent call) seems
to remove the problem and allowing to show the route.
As i'm not a premium developper i'm not directly going to change the code for
OpenBve.
If anyone could validate or not the code ??
---------- Code suggested
private void ShowRoute(bool UserSelectedEncoding) {
if (Result.RouteFile != null) {
this.Cursor = Cursors.WaitCursor;
if (!Program.CurrentlyRunningOnMono) { //
disabled code on Mono because it makes crash
Application.DoEvents();
}
]...[
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https://bugs.launchpad.net/bugs/990960
Title:
openBVE crashes, another dependency issue?
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