Sets the callback function for a source. The callback for a source is
called from the source's dispatch function.
The exact type of @func depends on the type of source; ie. you
should not count on @func being called with @data as its first
parameter. Cast @func with G_SOURCE_FUNC() to avoid warnings about
incompatible function types.
See [memory management of sources][mainloop-memory-management] for details
on how to handle memory management of @data.
Typically, you won't use this function. Instead use functions specific
to the type of source you are using, such as g_idle_add() or g_timeout_add().
It is safe to call this function multiple times on a source which has already
been attached to a context. The changes will take effect for the next time
the source is dispatched after this call returns.
Sets the callback function for a source. The callback for a source is called from the source's dispatch function.
The exact type of @func depends on the type of source; ie. you should not count on @func being called with @data as its first parameter. Cast @func with G_SOURCE_FUNC() to avoid warnings about incompatible function types.
See [memory management of sources][mainloop-memory-management] for details on how to handle memory management of @data.
Typically, you won't use this function. Instead use functions specific to the type of source you are using, such as g_idle_add() or g_timeout_add().
It is safe to call this function multiple times on a source which has already been attached to a context. The changes will take effect for the next time the source is dispatched after this call returns.