怎样获取CComboBox中下拉列表中选定一项的内容？

[gracezhu277]

我写了个基于对话框的程序，放了个CComboBox控件，用户在使用时，从ComboBox下拉表中选择一项，如何获取选定项的内容（注意是内容不是索引），并且以字符串类型传出，或者把对应的内容写入一个缓冲区。

[idAnts]

//
int i = m_Com.GetCurSel();
if(i!= -1)
{
CString rString;
m_Com.GetLBText(i,rString);
}

[legendhui]

GetLBText

[lu1172101275]

一楼讲得很明白

[gracezhu277]

还有，在对话框加载时，我想让comboBox的Edit框里显示一条提示语句如”please choose",但我用了SetWindowText和SetDlgItemText试过，都不行，怎么回事呢？

[idAnts]

m_Com.AddString(”please choose");
m_Com.SetCurSel(0);

[shenailin]

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;
Parameters
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.

[anlywei]

m_Combo.InsertString(0,"please choose");
m_Combo.SetCurSel(0);

[gracezhu277]

好了，现在可以了，真是谢谢各位了！但还是有问题，执行到fopen那句时，总说文件不存在！但我测试了下ch_filename这个字符串，里面确实拷贝了选定的名字。而且这个文件也确实存在，不知道什么原因。这个问题困扰我一天了，开始以为是获取选定项时不正确，但现在还是这样，晕了...
void CFomatManageDlg::OnSelchangeComboTem()
{
// 将用户选择的模板显示为界面
FILE *fp;
//MyComboBox myComboBox;
CComboBox *pMyComboBox=(CComboBox*)GetDlgItem(IDC_COMBO_TEM);
int i=pMyComboBox->GetCurSel();
CString ch_filename;
pMyComboBox->GetLBText(i,ch_filename);


if((fp=fopen(ch_filename,"r"))==NULL)
{
MessageBox("This file doesn't exist!","error",MB_OK);
}
}