MessagePanelButton
One button spec for MessagePanel: a label plus the same onActivate callback shape BGE.UI.Button itself uses (function(button as BGE.UI.Button) as void).
Properties
label(string)onActivate(dynamic)
Constructor
new MessagePanelButton(
label: string,
onActivate: dynamic,
): MessagePanelButtonParameters
label(string)onActivate(dynamic)