Hi, I'm trying to debug a motif-based program (geomview) that has problems with its ToggleButtonWidgets. The program once worked okay with lesstif (using version 0.91.8). However, with lesstif 0.92.6, the toggle buttons fail to show up. The window just shows a blank spot where the button (and its label) should be. I poked around the geomview source, and discovered that the toggle button widgets are created using XtCreateManagedWidget(), with arguments that include setting XmNwidth and XmNheight to zero. I thought that might be suspect, and tried setting the width and height to 1 and to 10, to no avail. Why 1 and 10? Just grasping at straws: I know nothing of motif programming. I dug into docs on the openmotif web site today, and discovered that the motif "Core" base class for the widgets lists the default value for XmNwidth and XmNheight as "dynamic". With that clue, I removed completely the code that sets XmNwidth and XmNheight for the toggle buttons. It works! My theory is that some implementations of motif (such as the penultimate lesstif?) treat width zero as "unset", and compute the width from the width of the label or whatnot. But other implementations (current lesstif?) treat zero seriously, and give you a zero-width window to use. Am I on the right track? Is *not* setting width and height the right thing to do here? Any insight will be appreciated. Thanks very much for lesstif! -Steve
