Compiler warning, object name, bug, and string fixes.

    expands the dialog window, making it easier to read more DRC error messages.

    In other dialogs without one component more important than the others, the

    sizers might be configured to position the controls to sensible positions

    near the perimeter of the increasingly larger dialog box, not necesarily

    near the perimeter of the increasingly larger dialog box, not necessarily

    leaving them all bundled tightly together.  The dialog box should look

    nice at any size large enough to show all the components.

    This is important because the help files and the wiki often lag behind

    the source code.

    Avoid defining initial dialog sizes if possible.  Let the sizers do their

    job.  After the dialog is fit to the sizers, set the minimum size to the

    current size to prevent the dialog controls from being obscured when

    resizing the dialog.  If the labels or text of the dialog controls are,

    set or changed at run time.  Rerun wxWindow::Fit() to allow the dialog to

    re-size and adjust for the new control widths.  This can all be done after

    the dialog is created but before it is shown or use class methods to

    re-size the dialog as required.  Reset the minimum size to the updated

    dialog size.

        return;

    user_to_device_coordinates( centre );

    radius = user_to_device_size( radius );

    radius = wxRound( user_to_device_size( radius ) );

    /* DXF ARC */

    wxString cname = ColorRefs[current_color].m_Name;