Rigol DS7034 User Programming Manual page 258

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7. Add the variables m_combox and m_receive to the Combo Box and Edit Box controls
respectively.
8. Add codes.
Double-click Send and Read to enter the programming environment. Declare the #include
<visa.h> of the VISA library in the header file and then add the following codes:
ViSession defaultRM, vi;
char buf [256] = {0};
CString s,strTemp;
char* stringTemp;
ViChar buffer [VI_FIND_BUFLEN];
ViRsrc matches=buffer;
ViUInt32 nmatches;
ViFindList list;
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Chapter 3 Programming Examples
MSO7000/DS7000 Programming Guide