State button tools may be in one of two states: checked or unchecked. The Checked property determines the state of the tool. If set to True, the control is checked (pressed). If set to False, the control is unchecked (un-pressed). (Depending on its placement and ToolPropsBase.DisplayStyle The tool may not actually display a checkmark.)
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