承接专栏《MFC工控项目实例二十手动测试界面模拟量输入实时显示》
对于禁止使用的删除、参数按钮，在选中列表控件选项时切换为能够使用。

1、在TypDlg.h文件中添加代码

#include "ShadeButtonST.h"
#include "BtnST.h"
class CTypDlg : public CDialog
{
public:...CShadeButtonST	m_bAdd;CShadeButtonST	m_bDel;CShadeButtonST	m_bParameter;CShadeButtonST	m_bReturn;CListCtrl	m_ctrlType;...}	

2、在TypDlg.cpp文件中添加代码

void CTypDlg::DoDataExchange(CDataExchange* pDX)
{CDialog::DoDataExchange(pDX);DDX_Control(pDX, IDC_LIST1, m_ctrlType);DDX_Control(pDX, IDC_BUTTON1, m_bAdd);DDX_Control(pDX, IDC_BUTTON2, m_bDel);DDX_Control(pDX, IDC_BUTTON3, m_bParameter);DDX_Control(pDX, IDCANCEL, m_bReturn);}BEGIN_MESSAGE_MAP(CTypDlg, CDialog)//{{AFX_MSG_MAP(CTypDlg)ON_BN_CLICKED(IDC_BUTTON1, OnButton1)ON_BN_CLICKED(IDC_BUTTON2, OnButton2)ON_BN_CLICKED(IDC_BUTTON3, OnButton3)//}}AFX_MSG_MAP
END_MESSAGE_MAP()BOOL CTypDlg::OnInitDialog() 
{CDialog::OnInitDialog();m_bAdd.SetShade(CShadeButtonST::SHS_HARDBUMP);m_bDel.SetShade(CShadeButtonST::SHS_HARDBUMP);m_bParameter.SetShade(CShadeButtonST::SHS_HARDBUMP);m_bReturn.SetShade(CShadeButtonST::SHS_HARDBUMP);
...
}void CTypDlg::OnButton2() 
{if(m_nTypeIndex < theApp.m_nProductSel)theApp.m_nProductSel--;theApp.m_allPara.RemoveAt(m_nTypeIndex);m_ctrlType.DeleteItem(m_nTypeIndex);	GetDlgItem(IDC_BUTTON2)->EnableWindow(0);GetDlgItem(IDC_BUTTON3)->EnableWindow(0);
}void CTypDlg::OnButton3() 
{CTypData dlg;dlg.m_pPara = &theApp.m_allPara[m_nTypeIndex];if(dlg.DoModal() == IDOK){LV_ITEM item;item.mask = LVIF_TEXT|LVIF_IMAGE;item.iItem = m_nTypeIndex;item.iSubItem = 0;item.pszText = theApp.m_allPara[m_nTypeIndex].m_strTypeName;item.iImage = 0;m_ctrlType.SetItem(&item);item.iSubItem = 1;item.pszText = theApp.m_allPara[m_nTypeIndex].m_strBrand;m_ctrlType.SetItem(&item);item.iSubItem = 2;item.pszText = theApp.m_allPara[m_nTypeIndex].m_strRemark;m_ctrlType.SetItem(&item);}	}void CTypDlg::OnItemchangedList1(NMHDR* pNMHDR, LRESULT* pResult) 
{NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;POSITION pos = m_ctrlType.GetFirstSelectedItemPosition();if(pos != NULL){int nItem = m_ctrlType.GetNextSelectedItem(pos);if(m_nTypeIndex != nItem){m_nTypeIndex = nItem;}}elsem_nTypeIndex = -1;	*pResult = 0;
}void CTypDlg::OnClickList1(NMHDR* pNMHDR, LRESULT* pResult) 
{GetDlgItem(IDC_BUTTON2)->EnableWindow(true);GetDlgItem(IDC_BUTTON3)->EnableWindow(true);
}void CTypDlg::OnDblclkList1(NMHDR* pNMHDR, LRESULT* pResult) 
{OnButton3() ;*pResult = 0;
}

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