基于 CListView 的 SDI 应用程序中的选择更改事件
我正在开发 MFC SDI 应用程序.我的视图是从 CListView
类派生的.我想处理列表控件的选择更改事件.我无法添加 WM_NOTIFY
消息处理程序,因为我不知道如何获取创建的列表视图的 ID.请帮帮我.
I am developing MFC SDI application. My view is derived from CListView
class. I would like to handle the selection changed event for the list control. I'm not able to add WM_NOTIFY
message handler as I don't know how to get the ID of the created listview. Please help me.
推荐答案
您所要做的就是将以下内容添加到您的消息映射中:
All you have to do is add the following to your message map:
ON_NOTIFY_REFLECT(LVN_ITEMCHANGED, &OnItemChanged)
这是您的事件处理程序:
And here is your event handler:
void CMyListView::OnItemChanged(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
// Did the item state change?
if (pNMListView->uChanged & LVIF_STATE)
{
// Did the item selection change?
const bool oldSelState = (pNMListView->uOldState & LVIS_SELECTED) != 0x0;
const bool newSelState = (pNMListView->uNewState & LVIS_SELECTED) != 0x0;
const bool selStateChanged = oldSelState != newSelState;
if(selStateChanged)
{
// TODO: handle selection change; use newSelState where appropriate
}
}
*pResult = 0;
}
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