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cdpace wrote: unresolved external symbol _sqlite_freemem This indicates that either you have spelt this function name wrongly, or the libary that includes the function has not been added to your project. Check that you have added all the pre-requisites for CppSQLiteWrapper . I don't know where you got this code from but it may be quicker if you go back to the source and ask your question there.

Set a breakpoint in OnInitialUpdate and single step into SetColumsIngred .

nuttynibbles wrote: strarray[i] = "Rule " + "; hello world"; Because in that case you try to concatenate char arrays, not std::string. Thus, there's no + operator overloading for char arrays. The + operator is overloaded by the string object, so it means the left operand of the + has to be a string, not a char array.

Well, while your values represent correctly NAN values, they (according to that Wikipedia page) don't cover all the possibilities.

This is a misuse of WM_TIMER, because it is to often so it will lower performance with its overhead. If you need such high frequencies of calling write a seperate thread which handles such stuff.

i didn't try, but i create a parent window in the same process, it works!

i have these headers #include <iostream> #include <sstream> #include <fstream> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #include <ctype.h> #include <map> #include <vector> using namespace std;

wangningyu wrote: but if you use "/Od" , it doesn't print Error. why ??? Because /Od suppresses code movement, the compiler likely removed the if () block since it detects i is never less than 0 .

No. You would either use a structure that prevents duplicates (e.g. .NET SortedList in C# --- not sure if there is one in C++) or use qsort, std::sort, and then identify duplicates.

msr_codeproject wrote: What is the entry point for Message Mapping? "Entry point"? Probably they wanted to ask about the class that is the base for message mapping architecture in MFC? In which case, it is CCmdTarget [ ^ ] There are macros that might be of your interest: DECLARE_MESSAGE_MAP [ ^ ] BEGIN_MESSAGE_MAP [ ^ ] and END_MESSAGE_MAP [ ^ ] You might want to read on Message Handling and Mapping [ ^ ]