[gst-devel] how to customize gstmesage in application?

[Volter Yen]

Hi all,
   I want to post a customized message to the bus, then process the message in my bus callback function, but there no guide to customize one's own GstMessage? 
 
 
this is my processing segment:
 
    158 GstMessage *mymsg;
    159 GstStructure *mystruct;

    227 gst_structure_set_value(mystruct,"PLAY_CTL","next");
    228
    229 mymsg.mini_object = NULL;
    230 mymsg.type = (1 << 14);
    231 mymsg.timestamp = 0;
    232 mymsg->src = NULL;
    233 mymsg->structure = mystruct;
    234
    235 gst_bus_post(bus,mymsg);

 
but I got compiling error infomation by saying mini_object,type and timestamp's no exisiting when I compiled it,but the GstMessage structure definition is:
typedef struct {
  GstMiniObject mini_object;
  GstMessageType type;
  guint64 timestamp;
  GstObject *src;
  GstStructure *structure;
} GstMessage;
 
could anybody help me? thank you!
Volter
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