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## com.gwtext.client.widgets.grid.event
Interface ColumnModelListener

All Known Implementing Classes:
  ColumnModelListenerAdapter

    public interface ColumnModelListener

Method Summary
`void` | `onColumnLockChange(ColumnModel cm, int colIndex, boolean locked)` Fires when a column's locked state is changed.
`void` | `onColumnMoved(ColumnModel cm, int oldIndex, int newIndex)` Fires when a column is moved.
`void` | `onHeaderChange(ColumnModel cm, int columnIndex, java.lang.String newText)` Fires when the text of a header changes.
`void` | `onHiddenChange(ColumnModel cm, int colIndex, boolean hidden)` Fires when a column is hidden or "unhidden".
`void` | `onWidthChange(ColumnModel cm, int colIndex, int newWidth)` Fires when the width of a column changes.

Method Detail

### onColumnLockChange

    void onColumnLockChange(ColumnModel cm,
                            int colIndex,
                            boolean locked)

  Fires when a column's locked state is changed.

  Parameters:
    `cm` - this
    `colIndex` - the column index
    `locked` - true if locked

### onColumnMoved

    void onColumnMoved(ColumnModel cm,
                       int oldIndex,
                       int newIndex)

  Fires when a column is moved.

  Parameters:
    `cm` - this
    `oldIndex` - the old column index
    `newIndex` - the new column index

### onHeaderChange

    void onHeaderChange(ColumnModel cm,
                        int columnIndex,
                        java.lang.String newText)

  Fires when the text of a header changes.

  Parameters:
    `cm` - this
    `columnIndex` - the column index
    `newText` - the new header text

### onHiddenChange

    void onHiddenChange(ColumnModel cm,
                        int colIndex,
                        boolean hidden)

  Fires when a column is hidden or "unhidden".

  Parameters:
    `cm` - this
    `colIndex` - the column index
    `hidden` - true if hidden, false otherwise

### onWidthChange

    void onWidthChange(ColumnModel cm,
                       int colIndex,
                       int newWidth)

  Fires when the width of a column changes.

  Parameters:
    `cm` - this
    `colIndex` - the column index
    `newWidth` - the new width

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