XSetWindowBorder(display, w, border_pixel)
      Display *display;
      Window w;
      unsigned long border_pixel;
| display | Specifies the connection to the X server. | 
| w | Specifies the window. | 
| border_pixel | Specifies the entry in the colormap. | 
XSetWindowBorder() can generate BadMatch and BadWindow errors.
| BadMatch | An InputOnly window is used as a Drawable. | 
| BadMatch | Some argument or pair of arguments has the correct type and range but fails to match in some other way required by the request. | 
| BadWindow | A value for a Window argument does not name a defined Window. |