Error occurs when using Properties item in context menu item from InteractiveChart of SWT chart extension

[QuocDoBV]

I have created a java project which uses an InteractiveChart from SWT chart extension. Then using context menu of the chart.
The exception as below throws when trying to open Properties item in the second time.

Exception in thread "main" java.lang.IllegalArgumentException: Argument not valid
	at org.eclipse.swt.SWT.error(SWT.java:4903)
	at org.eclipse.swt.SWT.error(SWT.java:4837)
	at org.eclipse.swt.SWT.error(SWT.java:4808)
	at org.eclipse.swt.graphics.GC.setForeground(GC.java:4409)
	at org.eclipse.swtchart.internal.Title.paintControl(Title.java:294)
	at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:234)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4274)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1090)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1075)
	at org.eclipse.swt.widgets.Composite.WM_PAINT(Composite.java:1536)
	at org.eclipse.swt.widgets.Control.windowProc(Control.java:4801)
	at org.eclipse.swt.widgets.Display.windowProc(Display.java:5039)
	at org.eclipse.swt.internal.win32.OS.RedrawWindow(Native Method)
	at org.eclipse.swt.widgets.Control.update(Control.java:4588)
	at org.eclipse.swt.widgets.Display.update(Display.java:5009)
	at org.eclipse.jface.window.Window.runEventLoop(Window.java:830)
	at org.eclipse.jface.window.Window.open(Window.java:799)
	at org.eclipse.swtchart.extensions.charts.InteractiveChart.openPropertiesDialog(InteractiveChart.java:488)
	at org.eclipse.swtchart.extensions.charts.InteractiveChart.handleSelectionEvent(InteractiveChart.java:409)
	at org.eclipse.swtchart.extensions.charts.InteractiveChart.handleEvent(InteractiveChart.java:202)
	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89)
	at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4274)
	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1066)
	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4072)
	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3660)
	at Test.main(Test.java:42)

How to reproduce:

1. Create a plug-in project then adding extensions as below settings:
   
2. Create main source as attached file
   Test.txt
3. Run the source
4. Right-click on the chart to open Properties dialog. Then clicking Close and Apply button to close the dialog and apply settings
   
5. Repeat step 4
   Expected: Can change settings on Propeties dialog
   Actual: Exception throws.
   Note: the problem only happens when I use SWT extension. If I import SWT source to my workspace instead of installing SWT chart extension, the problem does not happen

[QuocDoBV]

Hi @eselmeister,
Could you please take a look at this?
Thank you!

[eselmeister]

Sure, I will have a look at it.

[eselmeister]

@QuocDoBV Try the InteractiveChartDemo.java and start it in the IDE as a Java Application. If that works fine, then export the InteractiveChartDemo.java as a Runnable Jar File. Then try the exported jar and watch if an exception is thrown.

[eselmeister]

[QuocDoBV]

Hi @eselmeister,
The problem still occurs.

Let close all projects in your workspace to make sure that the application is using extension instead of library from projects in your workspace. The extension is used from https://download.eclipse.org/swtchart/releases/0.14.0/

[QuocDoBV]

The problem only occurs the second time I open the Properties dialog.