list control的Item字符长度问题

vs03.net环境
请问：list control添加的Item是不是有长度限制？
为什么保存不全？

谢谢

C/C++ code

typedef struct _LVITEM { 
    UINT mask; 
    int iItem; 
    int iSubItem; 
    UINT state; 
    UINT stateMask; 
    LPTSTR pszText; 
    int cchTextMax; 
    int iImage; 
    LPARAM lParam;
#if (_WIN32_IE >= 0x0300)
    int iIndent;
#endif
#if (_WIN32_WINNT >= 0x560)
    int iGroupId;
    UINT cColumns; // tile view columns
    PUINT puColumns;
#endif
#if (_WIN32_WINNT >= 0x0600)
    int* piColFmt;
    int iGroup;
#endif
} LVITEM, *LPLVITEM; 

pszText
If the structure specifies item attributes, pszText is a pointer to a null-terminated string containing the item text. When responding to an LVN_GETDISPINFO notification, be sure that this pointer remains valid until after the next notification has been received.

If the structure receives item attributes, pszText is a pointer to a buffer that receives the item text. Note that although the list-view control allows any length string to be stored as item text, only the first 260 TCHARs are displayed.

If the value of pszText is LPSTR_TEXTCALLBACK, the item is a callback item. If the callback text changes, you must explicitly set pszText to LPSTR_TEXTCALLBACK and notify the list-view control of the change by sending an LVM_SETITEM or LVM_SETITEMTEXT message.

Do not set pszText to LPSTR_TEXTCALLBACK if the list-view control has the LVS_SORTASCENDING or LVS_SORTDESCENDING style.
cchTextMax
Number of TCHARs in the buffer pointed to by pszText, including the terminating NULL.

This member is only used when the structure receives item attributes. It is ignored when the structure specifies item attributes. For example, cchTextMax is ignored during LVM_SETITEM and LVM_INSERTITEM. It is read-only during LVN_GETDISPINFO and other LVN_ notifications.

Note Never copy more than cchTextMax TCHARs—where cchTextMax includes the terminating NULL—into pszText during an LVN_ notification, otherwise your program can fail.