成员的完整列表，这些成员属于 SARibbonCategoryLayout::PrivateData,包括所有继承而来的类成员

mCategoryAlignment	SARibbonCategoryLayout::PrivateData
mDirty (定义于 SARibbonCategoryLayout::PrivateData)	SARibbonCategoryLayout::PrivateData
mIsLeftScrollBtnShow	SARibbonCategoryLayout::PrivateData
mIsRightScrollBtnShow	SARibbonCategoryLayout::PrivateData
mItemList (定义于 SARibbonCategoryLayout::PrivateData)	SARibbonCategoryLayout::PrivateData
mLeftScrollBtn	SARibbonCategoryLayout::PrivateData
mMinSizeHint (定义于 SARibbonCategoryLayout::PrivateData)	SARibbonCategoryLayout::PrivateData
mRightScrollBtn	SARibbonCategoryLayout::PrivateData
mSizeHint (定义于 SARibbonCategoryLayout::PrivateData)	SARibbonCategoryLayout::PrivateData
mTotalWidth (定义于 SARibbonCategoryLayout::PrivateData)	SARibbonCategoryLayout::PrivateData
mXBase (定义于 SARibbonCategoryLayout::PrivateData)	SARibbonCategoryLayout::PrivateData
PrivateData(SARibbonCategoryLayout *p) (定义于 SARibbonCategoryLayout::PrivateData)	SARibbonCategoryLayout::PrivateData
totalSizeHintWidth() const	SARibbonCategoryLayout::PrivateData