Hi,

I am just starting out on X11 programming with Motif.
I am using RedHat Linux 9 with OpenMotif.

I tried to compile a program with the following command line -

gcc -I /usr/X11R6/LessTif/Motif1.2/include -L
/usr/X11R6/LessTif/Motif1.2/lib push2.c -o push -lX11

The program itself started out like -

--------------------------------------------------------------------
#include
#include

/* Prototype Callback function */

void pushed_fn(Widget , XtPointer ,
XmPushButtonCallbackStruct *);


main(int argc, char **argv)

{ Widget top_wid, button;
XtAppContext app;

top_wid = XtVaAppInitialize(&app, "Push", NULL, 0,
&argc, argv, NULL, NULL);

button = XmCreatePushButton(top_wid, "Push_me", NULL, 0);


/* tell Xt to manage button */
XtManageChild(button);

/* attach fn to widget */
XtAddCallback(button, XmNactivateCallback, pushed_fn, NULL);

XtRealizeWidget(top_wid); /* display widget hierarchy */
XtAppMainLoop(app); /* enter processing loop */

}

void pushed_fn(Widget w, XtPointer client_data,
XmPushButtonCallbackStruct *cbs)
{
printf("Don't Push Me!!\n");
}
---------------------------------------------------------------

I am getting the following compile error -

push2.c: In function `main':
push2.c:25: warning: passing arg 3 of `XtAddCallback' from
incompatible pointer type
/tmp/ccqpdNZ7.o(.text+0x29): In function `main':
: undefined reference to `XtVaAppInitialize'
/tmp/ccqpdNZ7.o(.text+0x40): In function `main':
: undefined reference to `XmCreatePushButton'
/tmp/ccqpdNZ7.o(.text+0x51): In function `main':
: undefined reference to `XtManageChild'
/tmp/ccqpdNZ7.o(.text+0x60): In function `main':
: undefined reference to `_XmStrings'
/tmp/ccqpdNZ7.o(.text+0x68): In function `main':
: undefined reference to `XtAddCallback'
/tmp/ccqpdNZ7.o(.text+0x76): In function `main':
: undefined reference to `XtRealizeWidget'
/tmp/ccqpdNZ7.o(.text+0x84): In function `main':
: undefined reference to `XtAppMainLoop'
collect2: ld returned 1 exit status

[root@localhost temp]#

Please help me with this.

Thanks

Rana Knight