compute_point
Description:
Translates the given point
in this's coordinates to coordinates relative to target
’s coordinate system.
In order to perform this operation, both widgets must share a common ancestor.
Parameters:
this |
the `GtkWidget` to query |
target |
the `GtkWidget` to transform into |
point |
a point in this's coordinate system |
out_point |
Set to the corresponding coordinates in |
Returns:
true if the point could be determined, false on failure. In this
case, 0 is stored in |