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[platform-swt-dev] Eclipse 3.0 and FormData classcastexception:


Hello,

We are trying to run our client which works on eclipse 2.1 to run on eclipse 3.0. With code unchanged in the UI, we get this exception :

java.lang.ClassCastException: org.eclipse.swt.layout.FormData
        at org.eclipse.swt.layout.GridLayout.createGrid(GridLayout.java:430)
        at org.eclipse.swt.layout.GridLayout.computeLayoutSize(GridLayout.java:330)
        at org.eclipse.swt.layout.GridLayout.computeSize(GridLayout.java:376)
        at org.eclipse.swt.widgets.Composite.computeSize(Composite.java:157)
        at org.eclipse.swt.layout.FormLayout.computeSize(FormLayout.java:206)
        at org.eclipse.swt.layout.FormLayout.layout(FormLayout.java:242)
        at org.eclipse.swt.layout.FormLayout.layout(FormLayout.java:235)
        at org.eclipse.swt.widgets.Composite.WM_SIZE(Composite.java:859)
        at org.eclipse.swt.widgets.Control.windowProc(Control.java(Compiled Code))
        at org.eclipse.swt.widgets.Display.windowProc(Display.java(Compiled Code))
        at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
        at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java(Inlined Compiled Code))
        at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java(Compiled Code))
        at org.eclipse.swt.widgets.Control.windowProc(Control.java(Compiled Code))
        at org.eclipse.swt.widgets.Display.windowProc(Display.java(Compiled Code))
        at org.eclipse.swt.internal.win32.OS.EndDeferWindowPos(Native Method)
        at org.eclipse.swt.widgets.Composite.resizeChildren(Composite.java:432)
        at org.eclipse.swt.widgets.Composite.resizeChildren(Composite.java:398)
        at org.eclipse.swt.widgets.Composite.setResizeChildren(Composite.java:499)
        at org.eclipse.swt.widgets.Composite.WM_SIZE(Composite.java:862)
        at org.eclipse.swt.widgets.Control.windowProc(Control.java(Compiled Code))
        at org.eclipse.swt.widgets.Display.windowProc(Display.java(Compiled Code))
        at org.eclipse.swt.internal.win32.OS.DefWindowProcW(Native Method)
        at org.eclipse.swt.internal.win32.OS.DefWindowProc(OS.java(Inlined Compiled Code))
        at org.eclipse.swt.widgets.Scrollable.callWindowProc(Scrollable.java(Compiled Code))



Any suggestions, anyone seen this problem before. The same code works on eclipse 2.1.


-Ram

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