Method
Gdk.Event._get_angle
Declaration [src]
gboolean
gdk_events_get_angle (
GdkEvent* event1,
GdkEvent* event2,
double* angle
)
Description [src]
Returns the relative angle from event1
to event2
.
The relative angle is the angle between the X axis and the line through both events’ positions. The rotation direction for positive angles is from the positive X axis towards the positive Y axis.
This assumes that both events have X/Y information.
If not, this function returns FALSE
.
Parameters
event2 |
GdkEvent |
second |
|
Ownership is not transferred to the callee | |
angle |
double* |
return location for the relative angle between both events |
|
Direction: out | |
Ownership of the data is transferred to the callee |