LessTif beginner

[Charles McKnight]

Greetings!

I've just downloaded, built, and installed LessTif 0.90.1, and am trying
to get the examples from the O'Reilly Motif Programming Manual to run.

Using the following command line:

gcc -ohello -I/usr/local/LessTif/Motif1.2/include -I/usr/X11R6/include
-L/usr/X11R6/lib -L/usr/local/LessTif/Motif2.0/lib -lXt -lXm -lX11
hello.c

I've successfully compiled the following program:

#include <Xm/PushB.h>

void button_pushed(Widget widget, 
                   XtPointer client_data, 
                   XtPointer event_data)
{
   printf("Hello Yourself!");
}

int main(int argc, char **argv)
{
   Widget toplevel, button;
   XtAppContext app;
   XmString label;

   XtSetLanguageProc( NULL, NULL, NULL );

   toplevel = XtVaAppInitialize(&app, "Hello", NULL, 0, &argc, argv,
                                NULL, NULL);

   label = XmStringCreateLocalized("Push here to say hello!");
   button = XtVaCreateManagedWidget("pushme", 
                                    xmPushButtonWidgetClass, 
                                    toplevel, XmNlabelString, label,
                                    NULL);

   XmStringFree(label);
   XtAddCallback(button, XmNactivateCallback, button_pushed, NULL );
   XtRealizeWidget(toplevel);
   XtAppMainLoop(app);
}

But when I run it, I get the following messages:

Warning: XmPushButton ClassInitialize: XmeTraitSet failed

Warning: Cannot allocate colormap entry, some colors may be incorrect
Error: attempt to add non-widget child "DropSiteManager" to parent
"hello" which supports only widgets.

Other information is that I'm using RedHat Linux 6.1, I'm on a HP Vectra
VL with 128 Mb RAM, 166 MHz processor, Matrox Millenium 2Mb graphic
card, and using the XFREE_SVGA server.

I will assume that I'm doing something wrong, and any enlightenment will
be greatly appreciated.

Thanks for your time.

Charles McKnight
[EMAIL PROTECTED]