#define MY_DEBUG
#ifdef MY_DEBUG
#include <stdio.h>
static void MY_TRACK(const char *str)
 {
 FILE *fp = fopen("c:\\my_track_char.txt", "a+");
// if (fp == NULL)
//  {
//   exit(-1);
//  }
 fprintf(fp, "%s\r\n", str);
 fclose(fp);
}

static void MY_TRACK(const TDesC& aMsg)
 {
 FILE *fp = fopen("c:\\my_track_desc.txt", "a+");
// if (fp == NULL)
//  {
//   exit(-1);
//  }
 fwrite(aMsg.Ptr(), sizeof(int), aMsg.Length(), fp);
 fclose(fp);
}

#define MY_TRACK_NUMBER(x, y) {\
 FILE *fp = fopen("c:\\my_track_number.txt", "a+"); \
 fprintf(fp, "number test: ");\
 fprintf(fp, x);\
 fprintf(fp, " = ");\
 fprintf(fp, "%d\r\n", y);\
 fclose(fp); \
}

#else

#include <stdio.h>
static void MY_TRACK(const char *str)
 {
 }

#define MY_TRACK_NUMBER(x, y)
}

#endif

还有两个额外的步骤:

1:修改*.mmp文件,包含以下内容

SYSTEMINCLUDE \epoc32\include\libc

2:在*.mmp文件中加入

LIBRARY estlib.lib

随后会在C:\Symbian\8.0a\S60_2nd_FP2_CW\Epoc32\winscw\c目录下产生调试文本文件。