I defined a UIL file, and got a problem:
there is a bar, just like XmNMessageWindow, appearing at the bottom of my MainWindow(XmMainWindow) or DialogWindow(XmSubWindow).
I found, if the Window contains XmText controls, that bar will appear, or, that bar will not appear. I don't know is that bar XmNmessageWindow of MainWindow. Now I don't want that bar appear, how to hide it ? :(