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【Qt】随机字符串

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Qt生成自定义字符串

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qsrand(QDateTime::currentMSecsSinceEpoch());
const char ch[] = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
int size = sizeof(ch);
char* str = new char[nLen + 1];
int num = 0;
for (int nIndex = 0; nIndex < nLen; ++nIndex)
{
	num = rand() % (size - 1);
	str[nIndex] = ch[num];
}
str[nLen] = '\0';

QString res(str);

   QLOG_INFO() << __FUNCTION__ << __LINE__ << res;

   m_RandomCode = res;