[ Version ( since = "2.22" ) ]
public void coords_to_parent (double x, double y, out double parent_x, out double parent_y)
Transforms window coordinates from a child window to its parent window, where the parent window is the normal parent as returned by get_parent for normal windows, and the window's embedder as returned by offscreen_window_get_embedder for offscreen windows.
For normal windows, calling this function is equivalent to adding the return values of
get_position to the child coordinates. For offscreen windows however (which can
be arbitrarily transformed), this function calls the GdkWindow:GdkWindow:to-embedder: signal to translate the coordinates.
You should always use this function when writing generic code that walks up a window hierarchy.
See also: coords_from_parent
| this |
a child window |
| x |
X coordinate in child’s coordinate system |
| y |
Y coordinate in child’s coordinate system |
| parent_x |
return location for X coordinate in parent’s coordinate system, or null |
| parent_y |
return location for Y coordinate in parent’s coordinate system, or null |