GetLBText

GetLBText是Visual C++里CComboBox類中的成員函式。

基本介紹

• 外文名：GetLBText
• 學科：計算機
• 套用：編程
• 性質：名詞

簡介

Gets a string from the list box of a combo box.

int GetLBText(int nIndex, LPTSTR lpszText) const;

void GetLBText(int nIndex, CString& rString ) const;

Return Value

The length (in bytes) of the string, excluding the terminating null character. If nIndexdoes not specify a valid index, the return value is CB_ERR.

參數說明

nIndex

Contains the zero-based index of the list-box string to be copied.

lpszText

Points to a buffer that is to receive the string. The buffer must have sufficient space for the string and a terminating null character.

rString

A reference to a CString.

函式說明

把索引號為nIndex的數據放到rString變數中. 與其對應的GetLBTextLen(int nIndex)函式就是得到索引號為nIndex中數據的長度。

示例

m_cbox.GetLBText (2,m_end); // GetLBText按鈕

UpdateData(0);

CString str; //GetLBTextLen按鈕

int i=m_cbox.GetLBTextLen (2);

str.Format ("%d",i);

m_end=str;

UpdateData(FALSE);

// The pointer to my combo box.extern CComboBox* pmyComboBox;

// Dump all of the items in the combo box.

#ifdef _DEBUG

CString str, str2;

int n;

for (int i=0;i < pmyComboBox->GetCount();i++)

{

n = pmyComboBox->GetLBTextLen( i );

pmyComboBox->GetLBText( i, str.GetBuffer(n) );

str.ReleaseBuffer();

str2.Format(_T("item %d: %s\r\n"), i, str.GetBuffer(0));

afxDump << str2;

}

#endif

套用

void CCMyComDlg::OnButton3()

{

CComboBox* combobox3 = (CComboBox*)GetDlgItem(IDC_COMBO3);

CString text;

combobox3->GetLBText(combobox3->GetCurSel(),text);

MessageBox(text,"提示");

}