When either component of the NavigationPaneFlyoutMinimumSize property is set to a specific, non-default value, the same component of the NavigationPaneFlyoutMinimumSizeResolved returns that same value. When either component of the NavigationPaneFlyoutMinimumSize property is left at its default value, the control uses a "best fit" value for the actual width or height; in that case, the NavigationPaneFlyoutMinimumSizeResolved property returns that value. The width component of the "best fit" value is based on the size of the images which are displayed by the group headers; when the control's UseLargeGroupHeaderImagesResolved property returns true, this size is based on the ImageSizeLarge property, and when UseLargeGroupHeaderImagesResolved returns false, it is based on the ImageSizeSmall property. The height component of the "best fit" value is based on the current size of the control's current group area (the area in which the SelectedGroup is displayed).
Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2