改变CTree中某一项的颜色

Question

RT
需要在某种事件触发的时候才改变CTree中某一个对应项的颜色

Answer 1

是不是就自己创建一个继承自CTreeCtrl的类CMyTree，然后在这个类里面重载某个函数啊，问题是到底该怎么弄还是不知道，能不能给点明示啊

Answer 2

自绘CTreeCtrl，lz可以去codeproject上找找看

Answer 3

你搜下Text_CTreeBT_Demo，这个源代码里面不知道有没有你要的东西

Answer 4

void CTreectrlDlg::OnCustDrawTree(NMHDR *pNMHDR,LRESULT *pResult)
{
// TODO: Add your message handler code here and/or call default
NM_TREEVIEW* pnmtv = (NM_TREEVIEW*)pNMHDR;
*pResult=CDRF_NOTIFYITEMDRAW;
//
LPNMTVCUSTOMDRAW pDraw=(LPNMTVCUSTOMDRAW)pNMHDR;
DWORD dwDrawStage=pDraw->nmcd.dwDrawStage; if(dwDrawStage & CDDS_ITEM)
{
HTREEITEM hItem=(HTREEITEM) pDraw->nmcd.dwItemSpec;
CString txt=m_Tree.GetItemText(hItem);
if(txt.Find( "本地磁盘 (C:)" ) > -1)// found
{//
pDraw->clrTextBk=0xFF;// red
pDraw->clrText  =0xFFFFFF;// white
}
}
}

Answer 5

楼上的方法我试了，
afx_msg void OnCustDrawTree(NMHDR* pNMHDR,LRESULT* pResult);
ON_NOTIFY(NM_CUSTOMDRAW, IDC_TREE1,OnCustDrawTree)void CCTreeCtrlDlg::OnCustDrawTree(NMHDR *pNMHDR, LRESULT *pResult)
{
NM_TREEVIEW* pnmtv=(NM_TREEVIEW*)pNMHDR;
*pResult=CDRF_NOTIFYITEMDRAW;

LPNMTVCUSTOMDRAW pDraw=(LPNMTVCUSTOMDRAW)pNMHDR;
DWORD dwDrawStage=pDraw->nmcd.dwDrawStage; if(dwDrawStage&CDDS_ITEM)
{
HTREEITEM hItem=(HTREEITEM)pDraw->nmcd.dwItemSpec;
//CString txt=m_tree.GetItemText(hItem);
CString txt=m_tree.GetItemText(hItem);
if(txt.Find("±¾µØ´ÅÅÌ(C:)")>-1)
{
pDraw->clrTextBk=0xFF;
pDraw->clrText=0xFFFFFF;
}
}
}但是没反应

Answer 6

void CCTreeCtrlDlg::OnCustDrawTree(NMHDR *pNMHDR, LRESULT *pResult)
{
LPNMTVCUSTOMDRAW pDraw=(LPNMTVCUSTOMDRAW)pNMHDR;
    DWORD dwDrawStage=pDraw->nmcd.dwDrawStage;
    UINT  uItemState =pDraw->nmcd.uItemState;
//
    *pResult=CDRF_NOTIFYITEMDRAW;
//|CDRF_NOTIFYPOSTPAINT|CDRF_NOTIFYSUBITEMDRAW|CDRF_NOTIFYPOSTERASE;
    CDC* pdc=CDC::FromHandle(pDraw->nmcd.hdc);
//
    CPoint pt;
    GetCursorPos(&pt);
    ScreenToClient(&pt);
    MapWindowPoints(&m_tree,&pt,1);
//    afxDump << pt << "\n";
    UINT flag=TVHT_ONITEMLABEL;
    HTREEITEM hSelect=m_tree.HitTest(pt,&flag);
//
    CRect rc;
    HTREEITEM hItem=(HTREEITEM) pDraw->nmcd.dwItemSpec;
    m_tree.GetItemRect(hItem,&rc,TRUE);//FALSE);text only
    CString txt=m_tree.GetItemText(hItem);
//
    if((dwDrawStage & CDDS_ITEM) && (hItem==hSelect))// not (uItemState & CDIS_SELECTED))
    {// 
        pdc->FillSolidRect(&rc,RGB(255,0,0));//clr);
//
        pdc->SetTextColor(RGB(255,255,255));//white
        pdc->SetBkColor(RGB(255,0,0));//clr);
//
        if(!m_bFontInited)
        {
            m_bFontInited=TRUE;
            CDC *pDC=GetDC();
            int cyFont=-MulDiv(8,pDC->GetDeviceCaps(LOGPIXELSY),72);//cyFont=-11
            m_hItalicFont.CreateFont(cyFont,0,0,0,FW_THIN,TRUE,
                                     FALSE,FALSE,0,0,0,0,0,_T("Arial"));
        }
        CFont* pfnt=pdc->GetCurrentFont();
        pdc->SelectObject(&m_hItalicFont);//pfnt);
        //
        pdc->TextOut(rc.left+2,rc.top+2,txt);
        pdc->SelectObject(pfnt);        *pResult |= CDRF_SKIPDEFAULT;
    }
}