Increase the reference count of object, and possibly remove the
floating reference, if object
has a floating reference.
In other words, if the object is floating, then this call "assumes
ownership" of the floating reference, converting it to a normal
reference by clearing the floating flag while leaving the reference
count unchanged. If the object is not floating, then this call
adds a new normal reference increasing the reference count by one.
Since 2.10
Increase the reference count of object, and possibly remove the floating reference, if object has a floating reference. In other words, if the object is floating, then this call "assumes ownership" of the floating reference, converting it to a normal reference by clearing the floating flag while leaving the reference count unchanged. If the object is not floating, then this call adds a new normal reference increasing the reference count by one. Since 2.10