如何给树控件加入工具提示
34. 如何给树控件加入工具提示
1.首先给树控件加入TVS_INFOTIP属性风格,如下所示:
if (!m_ctrlTree.Create(WS_CHILD|WS_VISIBLE|
TVS_HASLINES|TVS_HASBUTTONS|TVS_LINESATROOT|TVS_SHOWSELALWAYS|TVS_INFOTIP, //加入提示TVS_INFOTIP,jingzhou xu(树控件ID:100)
CRect(0, 0, 0, 0), &m_wndTreeBar, 100))
{
TRACE0("Failed to create instant bar child\n");
return -1;
}
2.其次加入映射消息声明,如下所示:
afx_msg void OnGetInfoTip(NMHDR* pNMHDR,LRESULT* pResult); //树控件上加入提示消息,jingzhou xu
ON_NOTIFY(TVN_GETINFOTIP, 100, OnGetInfoTip) //树控件条目上加入提示,jingzhou xu
3.最后加入呼应涵数处理:
void CCreateTreeDlg::OnGetInfoTip(NMHDR* pNMHDR,
LRESULT* pResult)
{
*pResult = 0;
NMTVGETINFOTIP* pTVTipInfo = (NMTVGETINFOTIP*)pNMHDR;
LPARAM itemData = (DWORD) pTVTipInfo->lParam;
//对应每个条目的数据
HTREEITEM hItem = pTVTipInfo->hItem;
CString tip;
HTREEITEM hRootItem = m_chassisTree.GetRootItem();
if (hRootItem != pTVTipInfo->hItem)
{
tip = "树结点的提示";
}
else
{
tip = "树根上的提示";
}
strcpy(pTVTipInfo->pszText, (LPCTSTR) tip);
}
1.首先给树控件加入TVS_INFOTIP属性风格,如下所示:
if (!m_ctrlTree.Create(WS_CHILD|WS_VISIBLE|
TVS_HASLINES|TVS_HASBUTTONS|TVS_LINESATROOT|TVS_SHOWSELALWAYS|TVS_INFOTIP, //加入提示TVS_INFOTIP,jingzhou xu(树控件ID:100)
CRect(0, 0, 0, 0), &m_wndTreeBar, 100))
{
TRACE0("Failed to create instant bar child\n");
return -1;
}
2.其次加入映射消息声明,如下所示:
afx_msg void OnGetInfoTip(NMHDR* pNMHDR,LRESULT* pResult); //树控件上加入提示消息,jingzhou xu
ON_NOTIFY(TVN_GETINFOTIP, 100, OnGetInfoTip) //树控件条目上加入提示,jingzhou xu
3.最后加入呼应涵数处理:
void CCreateTreeDlg::OnGetInfoTip(NMHDR* pNMHDR,
LRESULT* pResult)
{
*pResult = 0;
NMTVGETINFOTIP* pTVTipInfo = (NMTVGETINFOTIP*)pNMHDR;
LPARAM itemData = (DWORD) pTVTipInfo->lParam;
//对应每个条目的数据
HTREEITEM hItem = pTVTipInfo->hItem;
CString tip;
HTREEITEM hRootItem = m_chassisTree.GetRootItem();
if (hRootItem != pTVTipInfo->hItem)
{
tip = "树结点的提示";
}
else
{
tip = "树根上的提示";
}
strcpy(pTVTipInfo->pszText, (LPCTSTR) tip);
}
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