problems with int to wchar

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C++

struct RCDENTRY
{
    WCHAR wszRcdInd[4];
    WCHAR wszTag[1];
};
.....
int nRcdNum = listbox.GetItemCount();    // CListBox
RCDENTRY *re = new RCDENTRY[nRcdNum];
...
for (int i = 0; i < nRcdNum; i++)
{
    ...
    _itow_s(i, re[i].wszRcdInd, sizeof(re[i].wszRcdInd], 10);    // this leads the program aborting
   ...
}

Anyone could help?
Thanks in advance.

Posted 3-Jul-12 20:39pm

Krauze

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Jochen Arndt · Accepted Answer · 2012-07-03T20:59:00

Solution 1

sizeof returns the size in bytes but _itow_s requires the size in characters. So use

C++

sizeof(re[i].wszRcdInd]) / sizeof(WCHAR)

The size of wszRcdInd is 4 characters which can hold decimal number strings from -99 to 999 with trailing NULL character. So you should also ensure that your list box will not contain more than 999 items.

Posted 3-Jul-12 20:59pm

Jochen Arndt

Updated 3-Jul-12 21:00pm

v2

Comments

nv3 4-Jul-12 3:17am

Good advice, Jochen.

Sergey Chepurin 4-Jul-12 7:00am

Really good answer.