Camera API Technical Report:
Example Code

Example Code

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    Camera		camera;
    CameraWindow	cam_win;
    CameraOption	*cam_opt;
    int			cam_val;
    Widget      	option_menu;
    int			i, current_item;

    /* get the x-sampling options and current value */
    (void) CameraGetVal( camera, CV_X_SamplingOpt, &cam_opt );
    (void) CameraGetVal( camera, CV_X_Sampling, &cam_val );

    /* loop through options to make a menu */
    for(i=0; cam_opt[i].str != NULL; i++){

        /* set up a menu items structure */

        /* test for current item */
        if( cam_val == cam_opt[i].val )
            current_item = i;
    }
    option_menu = HGU_XmBuildMenu(/* etc etc */);

    /* get the current input window, change, check and reset it.
       Note the window set may fail unless checked first. If CameraCheckVal
       returns a non-zero value then the window has been changed
    */
    (void) CameraGetVal( camera, CV_InputWindow, &cam_win );
    fprintf(stderr, "Window origin = (%d, %d), width = %d, height = %d\n",
            cam_win.x, cam_win.y, cam_win.width, cam_win.height);

    cam_win.x += 200;
    cam_win.y += 200;
    (void) CameraCheckVal( camera, CV_InputWindow, &cam_win );
    (void) CameraSetVal( camera, CV_InputWindow, &cam_win );