TooltipHeading Property (IPlugInWrapper)
Gets or sets the caption to appear above the tooltip in a pop-up window to give more information about the plug-in.
Get a button's tooltip heading
//Pass in the daml id of your button. Or pass in any Pro button ID.
IPlugInWrapper wrapper = FrameworkApplication.GetPlugInWrapper("button_id_from daml");
var buttonTooltipHeading = wrapper.TooltipHeading;
Target Platforms: Windows 11, Windows 10
ArcGIS Pro version: 3 or higher.