XuiMessage1B
Kid 0 - XuiMessage1B
Kid 1 - XuiLabel
Kid 2 - XuiPushButton
"Selection" callback from MouseDown + MouseUp
"Selection" callback from Enter KeyDown when button has focus
XuiMessage1B grids display a text string on the XuiLabel grid and generate Selection
callback messages when the user selects its XuiPushButton grid.