XTranslateCoordinates - translate window coordinates

child_return
                 Returns the child if the coordinates are contained in a mapped child of the destination window.

       dest_w    Specifies the destination window.

       dest_x_returndest_y_return
                 Return the x and y coordinates within the destination window.

       display   Specifies the connection to the X server.

       src_w     Specifies the source window.

       src_xsrc_y     Specify the x and y coordinates within the source window.

       If XTranslateCoordinates returns True, it takes the src_x and src_y coordinates relative  to  the  source
       window's  origin  and  returns  these  coordinates  to  dest_x_return  and  dest_y_return relative to the
       destination window's origin.  If XTranslateCoordinates returns False, src_w and dest_w are  on  different
       screens,  and  dest_x_return  and  dest_y_return  are zero.  If the coordinates are contained in a mapped
       child of dest_w, that child is returned to child_return.  Otherwise, child_return is set to None.

       XTranslateCoordinates can generate a BadWindow error.

BadWindow A value for a Window argument does not name a defined Window.

       XTranslateCoordinates - translate window coordinates

Xlib-CLanguageXInterface

X Version 11                                      libX11 1.8.12                         XTranslateCoordinates(3)

       Bool   XTranslateCoordinates(Display   *display,   Window  src_w,  dest_w,  int  src_x,  int  src_y,  int
              *dest_x_return, int *dest_y_return, Window *child_return);