缺省将FlyoutPalette放在左边
重写FlyoutPaletteComposite.FlyoutPreferences的getDockLocation()方法
public int getDockLocation() {int dock = getPreferenceStore().getInt(PALETTE_DOCK_LOCATION);if (0 == dock) {// 缺省将面板放在左边return PositionConstants.WEST;}return getPreferenceStore().getInt(PALETTE_DOCK_LOCATION);}