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Home » Eclipse Projects » WindowBuilder » error with new version WindowBuilder switching to design tab(i updated to windowbuilder 1.9.7 and now opening a form page in designer gives an error)
error with new version WindowBuilder switching to design tab [message #1843710] Sun, 15 August 2021 05:18 Go to next message
charlie schindler is currently offline charlie schindlerFriend
Messages: 28
Registered: June 2014
Junior Member
org.eclipse.wb.internal.core.utils.exception.DesignerException: 313 (Exception during 'super' constructor evaluation). Dialog_(Shell,int) {<null>,3312} java.lang.IllegalArgumentException: Argument cannot be null

the whole file is quite big, so
i assume this is the code snipped giving the error.

...
   protected   Shell          shlBookForm;
...

   /**
    * Create the dialog.
    * @param parent
    * @param style
    */
   public BookForm(Shell parent, int style)
   {
      super(parent,  SWT.SHELL_TRIM | SWT.BORDER);
      setText("Books");
   }
Re: error with new version WindowBuilder switching to design tab [message #1843720 is a reply to message #1843710] Mon, 16 August 2021 04:58 Go to previous message
charlie schindler is currently offline charlie schindlerFriend
Messages: 28
Registered: June 2014
Junior Member
got it fixed.
my bad:
i replaced only org.eclipse.nebula.widgets.formattedtext 2018 version with 2021 version. reverting to the old version fixed it.
not sure if all nebula and more libraries need to be then updated. there are quite many...
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