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insertColumns(contents [, refColumn] )
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Parameters
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TableRectangle contents
The contents of this rectangle is copied into the new columns. This rectangle must be as high as the grid. Its width determines the number of columns inserted.
TableColumn refColumn
[optional] The column before which the new columns are to be inserted. If null the new columns are inserted as the last columns in the grid.
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Returns
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void
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Throws
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TableException
INVALID_PARAMETER_ERR: Raised if the refColumn is not in this grid or if the table model doesn't allow a column to be inserted.
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