void (*add_operation_func) (ModestProgressObject *self, ModestMailOperation *mail_op);
void (*remove_operation_func) (ModestProgressObject *self, ModestMailOperation *mail_op);
void (*cancel_current_operation_func) (ModestProgressObject *self);
void (*add_operation_func) (ModestProgressObject *self, ModestMailOperation *mail_op);
void (*remove_operation_func) (ModestProgressObject *self, ModestMailOperation *mail_op);
void (*cancel_current_operation_func) (ModestProgressObject *self);
ModestMailOperation *mail_op);
void modest_progress_object_cancel_current_operation (ModestProgressObject *self);
ModestMailOperation *mail_op);
void modest_progress_object_cancel_current_operation (ModestProgressObject *self);