DSPLINK with Qt

Hi guys,

I have some questions about the DSPLINK application. I use Qt to make a GUI and modify the message sample. After ARM side getting the information from DSP, it should pass the message to GUI and display on the screen. ARM can get the data successfully, but when it returns the data to GUI, it failed. The data become all 0s.  The return value is a struct as the following:

#define data_row 10
#define data_col 2

typedef struct Message {
MSGQ_MsgHeader header;
double data[data_row][data_col];
}msg_t;

Please give me some help!