首页 > 代码库 > 获取ListControl控件中(复选框)CheckBox的状态
获取ListControl控件中(复选框)CheckBox的状态
1 建立测试工程 新建一个对话框工程,并添加一个CListCtrl控件,并关联一个成员变量m_List。 2 设置LVS_EX_CHECKBOXES风格 ListView_SetExtendedListViewStyle(m_List.GetSafeHwnd(), m_List.GetExStyle() | LVS_EX_CHECKBOXES); 3 为listctrl添加测试项 在OnInitDialog()中添加如下代码: m_List.InsertColumn(0,"Name",LVCFMT_LEFT,150); m_List.InsertColumn(1,"Sex",LVCFMT_LEFT,200); m_List.InsertItem(0, "ZhangSan"); m_List.InsertItem(1, "LiSi"); 4 添加控件通知消息 为ListCtrl控件添加LVN_ITEMCHANGED消息。系统生成如下代码: void CXXXDlg::OnLvnItemchangedList1(NMHDR *pNMHDR, LRESULT *pResult) { LPNMLISTVIEW pNMLV = reinterpret_cast<LPNMLISTVIEW>(pNMHDR); // TODO: Add your control notification handler code here *pResult = 0; }
5 在LVN_ITEMCHANGED消息处理函数中添加代码如下: void CXXXDlg::OnLvnItemchangedList1(NMHDR *pNMHDR, LRESULT *pResult) { LPNMLISTVIEW pNMLV = reinterpret_cast<LPNMLISTVIEW>(pNMHDR); // TODO: Add your control notification handler code here /* typedef struct tagNMLISTVIEW { NMHDR hdr; int iItem; int iSubItem; UINT uNewState; UINT uOldState; UINT uChanged; POINT ptAction; LPARAM lParam; } NMLISTVIEW, *LPNMLISTVIEW; */ if((pNMLV->uOldState & INDEXTOSTATEIMAGEMASK(1)) /* old state : unchecked */ && (pNMLV->uNewState & INDEXTOSTATEIMAGEMASK(2)) /* new state : checked */ ) { TRACE("Item %d is checked\n", pNMLV->iItem); } else if((pNMLV->uOldState & INDEXTOSTATEIMAGEMASK(2)) /* old state : checked */ && (pNMLV->uNewState & INDEXTOSTATEIMAGEMASK(1)) /* new state : unchecked */ ) { TRACE("Item %d is unchecked\n", pNMLV->iItem); } else { TRACE("Item %d does‘t change the check-status\n", pNMLV->iItem); }
*pResult = 0; }
6 调试 在debug环境下,改变checkbox的选中状态,查看输出信息。 OK.
获取ListControl控件中(复选框)CheckBox的状态