XtTranslateCoords(3) Library Functions Manual XtTranslateCoords(3)

XtTranslateCoords - translate widget coordinates

void XtTranslateCoords(Widget w, Position x, y, Position *rootx_return, *rooty_return);

rootx_return

rooty_return
Returns the root-relative x and y coordinates.
x

y
Specify the widget-relative x and y coordinates.
w
Specifies the widget.

While XtTranslateCoords is similar to the Xlib XTranslateCoordinates function, it does not generate a server request because all the required information already is in the widget's data structures.

X Toolkit Intrinsics - C Language Interface
Xlib - C Language X Interface
X Version 11 XT FUNCTIONS