Function

Gdkevents_get_center

Declaration [src]

gboolean
gdk_events_get_center (
  GdkEvent* event1,
  GdkEvent* event2,
  double* x,
  double* y
)

Description [src]

Returns the point halfway between the events’ positions.

This assumes that both events have X/Y information. If not, this function returns FALSE.

Parameters

event1 GdkEvent
 

First GdkEvent

 The data is owned by the caller of the function.
event2 GdkEvent
 

Second GdkEvent

 The data is owned by the caller of the function.
x double*
 

Return location for the X coordinate of the center.

 The argument will be set by the function.
 The called function takes ownership of the data, and is responsible for freeing it.
y double*
 

Return location for the Y coordinate of the center.

 The argument will be set by the function.
 The called function takes ownership of the data, and is responsible for freeing it.

Return value

Returns: gboolean
 

TRUE if the center could be calculated.