Unlike the GetStringSizePixels method, this method accounts for the Orientation property of the given LabelStyle object, which affects how high or wide a label will be.
For example, a string+font measured at 50x100 pixels (HxW), but oriented vertically, would yield a SizeF of 100x50 using this method.
Target Platforms: Windows 10, Windows 8.1, Windows 8, 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