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XtGetDisplays - retrieve a list of displays associated with an application context
void
XtGetDisplays(app_context, dpy_return, num_dpy_return)
XtAppContext app_context;
Display*** dpy_return;
Cardinal* num_dpy_return;
Specifies the application context.
Returns a list of open X display connections in the specified
application context.
Returns the count of open X display connections in
dpy_return.
To free the list of displays, use
XtFree.
X Toolkit Intrinsics -- C Language Interface
Xlib -- C Language X Interface