移动列表控件 [英] Move in list control

问题描述

如何在clistcontrol中上下移动所选行而不删除，并确保在选择按钮时它会向上移动。请告诉我。



我的尝试：



LVITEM lvi;

how to move selected row in clistcontrol up and down without deleting and make sure that it will gove down upt olast while selecting button ..please let me know.

What I have tried:

LVITEM lvi;

推荐答案

您好，

对于以前版本的MFC，我使用了SetSel和SetTopndex函数。

显示这个函数的帮助。

还有很多篇幅关于CListCtrl。

祝你好运

Hi,
For previous version of MFC, I used the functions SetSel and SetTopndex.
Show help for this functions.
There are also many articlehere about CListCtrl.
Best regards

如果不删除，就无法做到这一点。你必须在新的loaction创建一行副本并删除初始行。



在网上搜索clistctrl move item up down会给你举例：

复制/在CListCtrl中移动行 [ ^ ]

c ++ - 在列表框中向上或向下移动项目 - Stack Overflow [ ^ ]





要移动物品一步就可以换货：

• 获取选定索引处的项目，并将数据存储在变量
  
  
• 在新位置获取项目（索引+/- 1）并将数据存储在变量中
  
  
• 在选定位置设置项目来自新职位的数据
  
  
• 使用所选位置的数据在新位置设置项目
  
  
• 将选择更改为新位置
  
  

It is not possible to do this without deleting. You have to create a copy of the row at the new loaction and delete the initial row.

Searching the web for "clistctrl move item up down" gives you examples:
Copying/Moving Rows in CListCtrl[^]
c++ - Move an item up or down in a list box - Stack Overflow[^]


To move items one step it would be possible to exchange them:

• Get item at selected index and store data in variable
  
• Get item at new position (index +/- 1) and store data in variable
  
• Set item at selected position with data from new position
  
• Set item at new position with data from selected position
  
• Change selection to new position
  

// Single row must be selected
if (1 != GetSelectedCount())
    return;
int sel = GetNextItem(-1, LVNI_SELECTED); 
// Move up or down
int next = bUp ? sel - 1 : sel + 1;
if (next < 0 || next >= GetItemCount())
    return;
CString strSel, strNext;
for (int i = 0; i < GetHeaderCtrl()->GetItemCount(); i++)
{
    strSel = GetItemText(sel, i);
    strNext = GetItemText(next, i);
    SetItemText(sel, i, strNext);
    SetItemText(next, i, strSel);
}
// Move selection
SetItemState(sel, ~LVNI_SELECTED, LVIS_SELECTED);
SetItemState(next, LVNI_SELECTED, LVIS_SELECTED);
SetSelectionMark(next);

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