4.CString常用操作

①、CString 类对象的初始化：

CString str; CString str1(_T("abc")); CString str2 = _T("defg"); TCHAR szBuf[] = _T("kkk"); CString str3(szBuf); CString str4 = szBuf; TCHAR *p = _T("1k2"); //TCHAR * 转换为 CString CString str5(p); CString str6 = p; CString str7(str1); CString str8 = str7;

②、字符串基本操作：

● 长度：GetLength(); CString str(_T("abc")); int len = str.GetLength(); //len == 3 ● 是否为空，即不含字符：IsEmpty(); ● 清空字符串：Empty(); CString str(_T("abc")); BOOL mEmpty = str.IsEmpty(); //mEmpty == FALSE str.Empty(); mEmpty = str.IsEmpty(); //mEmpty == TRUE ● 转换大小写：MakeUpper、MakeLower ● 转换顺序：MakeReverse CString str(_T("Abc")); str.MakeUpper(); //str == ABC str.MakeLower(); //str == abc str.MakeReverse(); //str == cba ● 字符串的连接：+、+= CString str(_T("abc")); str = _

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