Specifications

Athena Widget Set libXaw 1.0.7

width The height and width of this widget in pixels.

highlight Apixel value which indexesthe widget’scolormap to derive the color

that will be used to drawthe scale lines on the graph.

insensitiveBorder This pixmap will be tiled into the widget’sborder if the widget becomes

insensitive.

international This is a boolean ﬂag, only settable at widget creation time. While not

utilized in this widget, it can and should be checked by anysubclasses

that have behavior that should vary with locale.

jumpScroll When the graph reaches the right edge of the windowitmust be scrolled

to the left. This resource speciﬁes the number of pixels it will jump.

Smooth scrolling can be achievedbysetting this resource to 1.

mappedWhenManaged If this resource is True,then the widget’swindowwill automatically be

mapped by the Toolkit when it is realized and managed.

minScale The minimum scale for the graph. The number of divisions on the graph

will always be greater than or equal to this value.

pointerColor A pixel value which indexesthe widget’scolormap to derive the fore-

ground color of the pointer symbol speciﬁed by the cursorName

resource.

pointerColorBackground A pixel value which indexesthe widget’scolormap to derive the

background color of the pointer symbol speciﬁed by the cursor-

Name resource.

screen The screen on which this widget is displayed. This is not a settable

resource.

sensitive Whether or not the toolkit should pass user events to this widget. The

widget will not get input events if either ancestorSensitive or sensitive is

False.

translations The ev e nt bindings associated with this widget.

update The number of seconds between graph updates. Each update is repre-

sented on the graph as a 1 pixel wide line. Every update seconds the

getValue procedure will be used to get a newgraph point, and this point

will be added to the right end of the StripChart.

yThe location of the upper left outside corner of this widget in its parent.

3.9.2. Getting the StripChart Value

The StripChart widget will call the application routine passed to it as the getValue callback func-

tion every update seconds to obtain another point for the StripChart graph.

The calling interface for the getValue callback is:

void (*getValueProc)(w, client_data, value)

Widget w;

XtPointer client_data;

XtPointer value;/*double * */

w Speciﬁes the StripChart widget.

client_data Speciﬁes the client data.

value Returns a pointer to a double. The application should set the address pointed to

by this argument to a double containing the value to be graphed on the

StripChart.