wchar的int问题 [英] problems with int to wchar

问题描述

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
   ...
}

有人可以帮忙吗?
在此先感谢.

Anyone could help?
Thanks in advance.

推荐答案

sizeof返回以字节为单位的大小，但是_itow_s要求以字符为单位的大小.所以用

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

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

wszRcdInd的大小为4个字符，可以容纳从-99到999的十进制数字字符串，后跟NULL字符.因此，您还应确保列表框中最多包含999个项目.

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.

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