Method
GdkEvent_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-
Type:
GdkEventSecond
GdkEvent.The data is owned by the caller of the method. angle-
Type:
double*Return location for the relative angle between both events.
The argument will be set by the function.