唉！不要乱用函数哦，特别是你不熟悉的！



                                      编程心得

                                                                                                            ------调试和错误

      今天找了错误找了半天！！起码三个小时！！！就因为下面这一行代码。导致我程序处处有错！！！！

      本来可以用   :m_IDGetitemText(Pos,0);这样的重载函数完成的,我非得用下面犯错的那个！！

      结果第四个参数搞不懂什么回事，就乱写了一个！谁知道出错了，这个m_ID变量是跟数据库关联的，这个字段的值长度已定为  16，但是我非得弄个20!!!!

      最后也是作死，各种错误！！！！！！

  m_Grid.GetItemText(Pos,0,(LPTSTR)(LPCTSTR)m_ID,20);//最后一个参数是说明 ：缓冲区的长度指向   由第三个参数指向，但是因为
                                                       //数据库里面对字段域有限制，所以这里不匹配的话很容易出错的！！！找了大半天
                                                       //各种不知名的错误的源头就是它！！！！

CListCtrl::GetItemText

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Retrieves the text of a list view item or subitem.

以带有颜色区分的格式查看复制到剪贴板打印

int GetItemText(   int nItem,   int nSubItem,   LPTSTR lpszText,   int nLen ) const;CString GetItemText(   int nItem,   int nSubItem ) const;

int GetItemText(   int nItem,   int nSubItem,   LPTSTR lpszText,   int nLen ) const;CString GetItemText(   int nItem,   int nSubItem ) const;

Parameters

---

nItem

The index of the item whose text is to be retrieved.

nSubItem

Specifies the subitem whose text is to be retrieved.

lpszText

Pointer to a string that is to receive the item text.

nLen

Length of the buffer pointed to by lpszText.

Return Value

---

The version returning int returns the length of the retrieved string.

The version returning a CString returns the item text.

Remarks

---

If nSubItem is zero, this function retrieves the item label; ifnSubItem is nonzero, it retrieves the text of the subitem. For more information on the subitem argument, see the discussion of theLVITEM structure in the Windows SDK.

Requirements