VC树控件的简单使用
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VC树控件的简单使用
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//頭文件聲明
?? ?CTreeCtrl m_VersionTree;
?? ?bool b=m_VersionTree.Create(TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS|TVS_SHOWSELALWAYS,rc,this,10001);
?? ?m_VersionTree.ShowWindow(SW_SHOW);
?? ?HTREEITEM hItem,hSubItem;
?? ?hItem = test.InsertItem("Parent1",TVI_ROOT);//在根結(jié)點上添加Parent1
?? ?hSubItem = test.InsertItem("Child1_1",hItem);//在Parent1上添加一個子結(jié)點
?? ?hSubItem = test.InsertItem("Child1_2",hItem,hSubItem);//在Parent1上添加一個子結(jié)點，排在Child1_1后面
?? ?hSubItem = test.InsertItem("Child1_3",hItem,hSubItem);
?? ?hItem = test.InsertItem("Parent2",TVI_ROOT,hItem);? ?
//插入根節(jié)點?? HTREEITEM?hRoot;?? CString?str=L"ROOT"?? hRoot=nTreeCtrl.InsertItem(str);???? ?? //相當于??? hRoot=nTreeCtrl.InsertItem(str,TVI_ROOT,TVI_LAST);??
//添加hRoot節(jié)點的孩子節(jié)點，并且被添加的節(jié)點位于hRoot所有孩子節(jié)點的末尾?? HTREEITEM?hChild=nTreeCtrl.InsertItem(str,hRoot);?? ?? //相當于?? HTREEITEM?hChild=nTreeCtrl.InsertItem(str,hRoot,TVI_LAST);??
//獲得根節(jié)點?? HTREEITEM?hRootItem;?? hRootItem=nTreeCtrl.GetRootItem();?? ?? ?? //獲得當前節(jié)點?? HTREEITEM?hCurrentItem;?? hCurrentItem=nTreeCtrl.GetSelectedItem();?? ?? ?? //獲得hItem的前一個節(jié)點?? ?? HTREEITEM?hPreItem;?? hPreItem=nTreeCtrl.GetNextItem(hItem,TVGN_PREVIOUS);?? ?? ?? //獲得hItem的下一個節(jié)點?? HTREEITEM?hNextItem;?? hNextItem=nTreeCtrl.GetNextItem(hItem,TVGN_NEXT);??
//判斷某節(jié)點是否有孩子節(jié)點?? if?(nTreeCtrl.ItemHasChildren(hRoot))??
//展開?? if(nTreeCtrl.ItemHasChildren(hRoot))?? ????nTreeCtrl.Expand(hParentItem,TVE_EXPAND);??
//判斷某節(jié)點是否有孩子節(jié)點?? if?(nTreeCtrl.ItemHasChildren(hRoot))?? {?? ????//獲得孩子節(jié)點?? ????HTREEITEM?hChild=nTreeCtrl.GetChildItem(hRoot);?? ?? }??
//判斷某節(jié)點是否有孩子節(jié)點?? if?(nTreeCtrl.ItemHasChildren(hRoot))?? {?? ????//獲得孩子節(jié)點?? ????HTREEITEM?hChild=nTreeCtrl.GetChildItem(hRoot);?? ?? ????//遍歷hRoot下一層的所有孩子節(jié)點?? ????while(hChild)?? ????{?? ????????hChild=nTreeCtrl.GetNextItem(hChild,TVGN_NEXT);?? ?? ????}?? ?? }??
//獲得某節(jié)點上的文字?? CString?str;?? nTreeCtrl.GetItemText(hRoot);??
treeCtrl.SelectItem(hItem);??
treeCtrl.SetFocus();??
<strong>????nTreeCtrl.DeleteAllItems();</strong>??
void?InsertPath(CString?path,?HTREEITEM?hRoot,?CTreeCtrl&?ctrl)?? {?? ????CFileFind?nFindFile;?? ????CString?str=L"";?? ????CString?nPicFileName=L"";?? ????BOOL?IsExist=FALSE;?? ????HTREEITEM?hSubItem;?? ?? ????nPicFileName.Format(L"%s\\*.*",path);?? ????IsExist?=?nFindFile.FindFile(nPicFileName);?? ????while?(IsExist)?? ????{?? ????????IsExist?=?nFindFile.FindNextFile();?? ????????if(nFindFile.IsDots())?? ????????????continue;?? ????????nPicFileName?=?nFindFile.GetFileName();?? ?? ????????//路徑?? ????????if(nFindFile.IsDirectory())?? ????????{?? ????????????hSubItem?=?ctrl.InsertItem(nPicFileName,hRoot);?? ????????????InsertPath(nFindFile.GetFilePath(),hSubItem,ctrl);?? ????????}?? ????????else?? ????????{?? ????????????//文件?? ????????????str?=?nPicFileName.Right(4);?? ????????????if(!str.CompareNoCase(_T(".jpg"))?||?!str.CompareNoCase(_T(".tif")))?? ????????????{?? ????????????????ctrl.InsertItem(nPicFileName,hRoot);?? ????????????}?? ????????}?? ????}?? ????nFindFile.Close();?? }??
void?LoadPath(CString?path)?//path為指定目錄???此函數(shù)的作用為將path目錄下的文件插入樹控件中?? {?? ????CTreeCtrl&?ctrl?=?GetTreeCtrl();?? ????ASSERT(ctrl);??? ????ctrl.DeleteAllItems();?? ????HTREEITEM?hRoot?=?ctrl.InsertItem(path);?? ????InsertPath(path,hRoot,ctrl);?? ????ctrl.Expand(hRoot,TVE_EXPAND);?? ?? }??
void?InsetAllFile(?list<CString>&?filePathList){?? ?? ?? ????CTreeCtrl?&?nTreeCtrl=((CMyTreeView*)(((CMainFrame*)AfxGetMainWnd())->m_SplitterWnd.GetPane(0,0)))->GetTreeCtrl();?? ????nTreeCtrl.DeleteAllItems();?? ?? ????list<CString>::iterator?it=filePathList.begin();?? ????HTREEITEM?hRoot=NULL;?? ????CString?filePath;?? ????CString?treeRootName=L"根目錄";??//所有的文件都在根目錄下??即：默認所有的文件都在同一個目錄下?? ?? ????while(it!=filePathList.end())?? ????{?? ????????filePath=*it;???? ?????????? ?? ?? ????????if(hRoot==NULL)?? ????????????hRoot=nTreeCtrl.InsertItem(treeRootName);??//建立根目錄?? ?? ?? ?? ????????if(filePath.Find(treeRootName)==0)?//?文件第一層目錄與根目錄相同，則截去文件第一層目錄，文件從第二層目錄開始?? ????????????filePath=filePath.Right(filePath.GetLength()-treeRootName.GetLength()-1);?? ?? ?? ????????LoadPicFiles(nTreeCtrl,filePath,?hRoot);?? ?? ????????it++;?? ????}?? ?? }??
[cpp] view plaincopyvoid?LoadPicFiles(CTreeCtrl&?nTreeCtrl,?CString?nFilePath,?HTREEITEM?nRoot)?? {?? ?? //?判斷nPicFolder是目錄還是文件?? //?如果是文件?? //?????直接將文件插入到樹控件中?nTreeCtrl.InsertItem(nPicFolder,nRoot);?? //?如果是目錄?? //?????獲取nPicFolder的第一層目錄?? //?????判斷nRoot目錄下是否已經(jīng)有此層目錄?? //?????如果有此層目錄?? //?????????遞歸插入其他?? //?????如果無此層目錄?? //?????????插入此層目錄，然后遞歸插入其他?? ?? ?? ????CString?nSubFolder;?????//首層目錄?? ????CString?nSubFilePath;???//去掉首層目錄后的文件名?? ????BOOL?IsExist=FALSE;?? ?? ?????? ?? ????int?nIndex=-1;?? ????nIndex=nFilePath.Find(L'\\');?? ?? ????if(nIndex>=0)?//目錄?? ????{?? ????????nSubFolder=nFilePath.Left(nIndex);?? ????????nSubFilePath=nFilePath.Right(nFilePath.GetLength()-nIndex-1);?? ?? ????????HTREEITEM?nSubRoot=NULL;?? ????????if(nTreeCtrl.ItemHasChildren(nRoot))?? ????????????nSubRoot=nTreeCtrl.GetChildItem(nRoot);?? ????????CString?str;?? ????????BOOL??bExist=FALSE;?? ????????while(nSubRoot)?? ????????{?? ????????????str=nTreeCtrl.GetItemText(nSubRoot);?? ?? ????????????if?(str.CompareNoCase(nSubFolder)==0)?? ????????????{?? ?? ????????????????bExist=TRUE;?? ????????????????break;?? ????????????}?? ?? ????????????nSubRoot=nTreeCtrl.GetNextSiblingItem(nSubRoot);?? ????????}?? ?? ????????if(!bExist)?? ????????{?? ?? ????????????nSubRoot=nTreeCtrl.InsertItem(nSubFolder,nRoot);?? ?? ????????????LoadPicFiles(nTreeCtrl,nSubFilePath,nSubRoot);?? ????????}else{?? ????????????LoadPicFiles(nTreeCtrl,nSubFilePath,nSubRoot);?? ????????}?? ????}?? ????else?if(nFilePath.Find(L".jpg")!=-1?||?nFilePath.Find(L".tif")!=-1)?? ????{?? ????????nTreeCtrl.InsertItem(nFilePath,nRoot);?? ????}?? }??
Pointer to an NM_TREEVIEW structure. The itemNew member is aTVITEM structure that contains valid information about the parent item in thehItem,state, andlParam members. Theaction member indicates whether the list is to expand or collapse. For a list of possible values, see the description of theTVM_EXPAND message.
typedef?struct?_NM_TREEVIEW?{??? ??NMHDR?hdr;??? ??UINT?action;??? ??TV_ITEM?itemOld;??? ??TV_ITEM?itemNew;??? ??POINT?ptDrag;??? }?NM_TREEVIEW;?? typedef?NM_TREEVIEW?FAR*?LPNM_TREEVIEW;?? ???
typedef?struct?_TV_ITEM?{?tvi?? ??UINT?mask;??? ??HTREEITEM?hItem;??? ??UINT?state;??? ??UINT?stateMask;??? ??LPSTR?pszText;??? ??int?cchTextMax;??? ??int?iImage;??? ??int?iSelectedImage;??? ??int?cChildren;??? ??LPARAM?lParam;?}??? TV_ITEM,?FAR*?LPTV_ITEM;?? ???
void?CLeftView::OnItemexpanding(NMHDR*?pNMHDR,?LRESULT*?pResult)?? {?? ????LPNMTREEVIEW?pNMTreeView?=?reinterpret_cast<LPNMTREEVIEW>(pNMHDR);?? ????//?TODO:?在此添加控件通知處理程序代?? ????HTREEITEM?htree=pNMTreeView->itemNew.hItem;?//?這個就是?將要被擴展或收縮節(jié)點的句柄?? ?? 。。。?? }??
<strong>?????(GetItemState(hItem,???TVIS_EXPANDED???)&TVIS_EXPANDED)!=TVIS_EXPANDED??//如果相等，則說明改節(jié)點是擴展的，如果不相等，則說明該節(jié)點是收縮的</strong>??
void?CExampleDlg::OnItemexpandingTree1(NMHDR*?pNMHDR,?LRESULT*?pResult)??? ?? {??? ?? NM_TREEVIEW*?pNMTreeView?=?(NM_TREEVIEW*)pNMHDR;??? ?? if?(pNMTreeView->action?==?TVE_COLLAPSE)???//判斷action的值?? ?? 。。。?? ?? 。。。?? ?? }??
if?((GetTreeCtrl().GetItemState(hItem,TVIS_EXPANDEDONCE?)&TVIS_EXPANDEDONCE?)!=0?)?//判斷是否擴展過一次，若！=0則說明被擴展過???
?????CImageList?m_ImageList;?? m_ImageList.Create(12,12,ILC_COLORDDB?|?ILC_MASK,?3,?1);?? HICON?hAdd=::LoadIcon(::AfxGetInstanceHandle(),?(LPCTSTR)IDI_ADD);?? HICON?hRemove=::LoadIcon(::AfxGetInstanceHandle(),?(LPCTSTR)IDI_REMOVE);?? HICON?hLeaf=::LoadIcon(::AfxGetInstanceHandle(),?(LPCTSTR)IDI_LEAF);?? m_ImageList.Add(hAdd);?? m_ImageList.Add(hRemove);?? m_ImageList.Add(hLeaf);?? GetTreeCtrl().SetImageList(&m_ImageList,TVSIL_NORMAL);??//?樹控件和圖像列表相連??
[cpp] view plaincopy ?????????m_treeCtrl.SetItemImage(htree,0,0)???//?通過SetItemImage(htree,0,0)?設(shè)置節(jié)點的圖標??
BOOL?CTreePathView::PreCreateWindow(CREATESTRUCT&?cs)?? {?? ????//?TODO:?在此處通過修改?? ????//??CREATESTRUCT?cs?來修改窗口類或樣式?? ?? ????cs.style|=TVS_HASLINES|TVS_SHOWSELALWAYS;???//若是想用CImageList的圖標?，則不要設(shè)置為TVS_HASBUTTONS形式?? ?? ?? ????return?CTreeView::PreCreateWindow(cs);?? }??
void?NewImageView::OnBnClickedButton5()?//?上一個圖?? {?? ????//?TODO:?在此添加控件通知處理程序代碼?? ?? ????CTreePathView?*?pTree=(CTreePathView*?)(((CMainFrame?*)AfxGetMainWnd())->m_wndSplitter.GetPane(0,0));?? ?? ????CTreeCtrl?&?treeCtrl=pTree->GetTreeCtrl();?? ?? ????HTREEITEM?hItem=treeCtrl.GetSelectedItem();?? ????if?(hItem!=NULL)?? ????{?? ????????hItem=treeCtrl.GetNextItem(hItem,TVGN_PREVIOUS);?? ?? ????????if?(hItem!=NULL)?? ????????{?? ????????????CString?str;?? ????????????str=pTree->GetFullPath(hItem);?? ????????????SetImage(str);?? ????????????treeCtrl.SelectItem(hItem);?? ????????????treeCtrl.SetFocus();?? ????????????InvalidateRect(m_ClientRect);?? ????????}?? ????}?? }??
void?NewImageView::OnBnClickedButton6()?//下一個?? {?? ????//?TODO:?在此添加控件通知處理程序代碼?? ?? ????CTreePathView?*?pTree=(CTreePathView*?)(((CMainFrame?*)AfxGetMainWnd())->m_wndSplitter.GetPane(0,0));?? ????CTreeCtrl?&?treeCtrl=pTree->GetTreeCtrl();?? ????HTREEITEM?hItem=treeCtrl.GetSelectedItem();?? ?? ????if?(hItem!=NULL)?? ????{?? ????????hItem=treeCtrl.GetNextItem(hItem,TVGN_NEXT);?? ?? ????????if?(hItem!=NULL)?? ????????{?? ????????????CString?str;?? ????????????str=pTree->GetFullPath(hItem);?? ????????????SetImage(str);?? ?? ????????????treeCtrl.SelectItem(hItem);?? ????????????treeCtrl.SetFocus();?? ????????????InvalidateRect(m_ClientRect);?? ????????}?? ????}?? }??
CTreeCtrl&?nTreeCtrl=((CImportTreeView*)m_SplitterWnd.GetPane(0,0))->GetTreeCtrl();?? ?? HTREEITEM?hItem;?? //獲得根目錄節(jié)點?? hItem?=?nTreeCtrl.GetRootItem();?? //遍歷樹控件節(jié)點?? TreeVisit(&nTreeCtrl,hItem);??
void?TreeVisit(CTreeCtrl*?pCtrl,HTREEITEM?hItem)??? {?????? ????if(pCtrl->ItemHasChildren(hItem))??????? ????{??? ????????HTREEITEM???hChildItem?=?pCtrl->GetChildItem(hItem);??????? ????????while(hChildItem!=NULL)??????? ????????{??? ????????????TreeVisit(pCtrl,hChildItem);?//遞歸遍歷孩子節(jié)點??????? ????????????hChildItem??=?pCtrl->GetNextItem(hChildItem,?TVGN_NEXT);??????? ????????}??????? ????}?? ????else?//?對葉子節(jié)點進行操作?? ????????Leaf(pCtrl,hItem);?? }??
CString?m_ParentFolder[10];?? CString?m_OldParentFolder[10];??
//--------------------將nParent添加到nParentFolder[10]第一位----------------------?? BOOL?AddParentFolder(CString?nParentFolder[10],?CString?nParent)?? {?? ????for(int?i=9;i>0;i--)?? ????????nParentFolder[i]=nParentFolder[i-1];?? ????nParentFolder[0]=nParent;?? ????return?TRUE;?? }?? ?? //---------------------nParentFolder[10]中的有效數(shù)據(jù)整合(加\)---------------------?? CString?AllCString(CString?nParentFolder[10])?? {?? ????CString?nAllCString=L"";?? ????for(int?i=0;i<10;i++)?? ????{?? ????????if(nParentFolder[i]==L"")?break;?? ????????nAllCString+=L"\\"+nParentFolder[i];?? ????}?? ????return?nAllCString;?? }??
CString?GetItemPath(CTreeCtrl*?pCtrl,HTREEITEM?hItem)?? {?? ????CString?nSelItemName=pCtrl->GetItemText(hItem);?? ?? ????HTREEITEM?parentItem=pCtrl->GetParentItem(hItem);???? ?? ????if?(parentItem==NULL)?//hItem即為根目錄?? ????????return?nSelItemName;?? ?? ????//清空OLD?? ????for(int?i=0;i<10;i++)?m_OldParentFolder[i]=L"";?? ?? ????//m_OldParentFolder?記錄上一個節(jié)點的父節(jié)點???? ????for(int?i=0;i<10;i++)????? ????????m_OldParentFolder[i]=m_ParentFolder[i];????? ?? ????//m_ParentFolder?記錄當前節(jié)點的父親節(jié)點???? ????for(int?i=0;i<10;i++)????? ????????m_ParentFolder[i]=L"";???? ?? ????CString?itemPath;???? ????CString?parentFolder=nSelItemName;???? ?? ????//將parentFolder添加到m_ParentFolder[0],其他值依次后移???? ????AddParentFolder(m_ParentFolder,parentFolder);???? ?? ???? ?? ????//?m_PicFolder?為根節(jié)點對應(yīng)的名字???? ????while(parentItem!=NULL&&pCtrl->GetItemText(parentItem).Compare(m_PicFolder))???? ????{???? ????????parentFolder=pCtrl->GetItemText(parentItem);???? ????????AddParentFolder(m_ParentFolder,parentFolder);???? ????????parentItem=pCtrl->GetParentItem(parentItem);??? ?? ????}???? ?? ?????itemPath.Format(L"%s%s",m_PicFolder,AllCString(m_ParentFolder));???? ?? ?????//清空OLD?? ?????for(int?i=0;i<10;i++)?m_OldParentFolder[i]=L"";?? ?????//清空????? ?????for(int?i=0;i<10;i++)????? ?????????m_ParentFolder[i]=L"";???? ?? ?????return?itemPath;?? ?? }??
void?Leaf(CTreeCtrl*?pCtrl,HTREEITEM?hItem)?? {?? ?????? ????CString?itemName=pCtrl->GetItemText(hItem);?? ?? ????//?葉子節(jié)點是jpg文件或tif文件?? ????if(nSelItemName.Find(L".jpg")!=-1?||?nSelItemName.Find(L".tif")!=-1)?? ????{?? ?? ????????//m_OldParentFolder?記錄上一個節(jié)點的父節(jié)點?? ????????for(int?i=0;i<10;i++)??? ????????????m_OldParentFolder[i]=m_ParentFolder[i];??? ?? ????????//m_ParentFolder?記錄當前節(jié)點的父親節(jié)點?? ????????for(int?i=0;i<10;i++)??? ????????????m_ParentFolder[i]=L"";?? ?? ????????CString?imgPath=L"";?? ????????CString?parentFolder=itemName;?? ?? ????????//將parentFolder添加到m_ParentFolder[0],其他值依次后移?? ????????AddParentFolder(m_ParentFolder,parentFolder);?? ?? ????????HTREEITEM?parentItem=pCtrl->GetParentItem(hItem);?? ?? ????????//?m_imgPath?為根節(jié)點對應(yīng)的名字?? ????????while(pCtrl->GetItemText(parentItem).Compare(m_imgPath))?? ????????{?? ????????????parentFolder=pCtrl->GetItemText(parentItem);?? ????????????AddParentFolder(m_ParentFolder,parentFolder);?? ????????????parentItem=pCtrl->GetParentItem(parentItem)?? ?? ????????}?? ?? ????????//?獲得葉子節(jié)點的全路徑?? ????????imgPath.Format(L"%s%s",m_imgPath,AllCString(m_ParentFolder));?? ?? ????}?? ?? ?? ????//?對imgPath?所指的文件進行操作?? ????ShowPic(imgPath);?? ?? ?? }??
std::vector<CString>?m_BookDirectory;?//存放所有葉子節(jié)點的父目錄??
void?GetBookDirectory(CTreeCtrl*?pCtrl,HTREEITEM?hItem)?? {?? ?? ????if(pCtrl->ItemHasChildren(hItem))??????? ????{??? ????????HTREEITEM???hChildItem?=?pCtrl->GetChildItem(hItem);??????? ????????while(hChildItem!=NULL)??????? ????????{??? ????????????GetBookDirectory(pCtrl,hChildItem);?//遞歸遍歷孩子節(jié)點???? ?? ????????????if(pCtrl->ItemHasChildren(hChildItem))?? ????????????????hChildItem??=?pCtrl->GetNextItem(hChildItem,?TVGN_NEXT);?? ????????????else?? ????????????????break;?? ????????}??????? ????}?? ????else?? ????{?? ????????HTREEITEM?parentItem=pCtrl->GetParentItem(hItem);???? ????????CString?bookPath=GetItemPath(pCtrl,parentItem);?? ?? ????????m_BookDirectory.push_back(bookPath);?? ?? ????}?? }??
[cpp] view plaincopyCTreeCtrl&?nTreeCtrl=((CImportTreeView*)m_SplitterWnd.GetPane(0,0))->GetTreeCtrl();?? HTREEITEM?hItem;?? hItem?=?nTreeCtrl.GetRootItem();?? ?? m_BookDirectory.clear();?? GetBookDirectory(&nTreeCtrl,hItem);??//獲得幾本書?及書的路徑?
?? ?CTreeCtrl m_VersionTree;
?? //在OnInitDialog()添加
??? CRect rc;
?? ?bool b=m_VersionTree.Create(TVS_LINESATROOT|TVS_HASLINES|TVS_HASBUTTONS|TVS_SHOWSELALWAYS,rc,this,10001);
?? ?m_VersionTree.ShowWindow(SW_SHOW);
?? ?HTREEITEM hItem,hSubItem;
?? ?hItem = test.InsertItem("Parent1",TVI_ROOT);//在根結(jié)點上添加Parent1
?? ?hSubItem = test.InsertItem("Child1_1",hItem);//在Parent1上添加一個子結(jié)點
?? ?hSubItem = test.InsertItem("Child1_2",hItem,hSubItem);//在Parent1上添加一個子結(jié)點，排在Child1_1后面
?? ?hSubItem = test.InsertItem("Child1_3",hItem,hSubItem);
?? ?hItem = test.InsertItem("Parent2",TVI_ROOT,hItem);? ?
?? ?hItem = test.InsertItem("Parent3",TVI_ROOT,hItem);
===============================================================================================
CTreeCtrl 控件使用總結(jié)
分類： MFC 2011-07-27 17:36 6390人閱讀 評論(4) 收藏 舉報 imagelist擴展nullstructurestructaction一 基礎(chǔ)操作?
1 插入節(jié)點
1）插入根節(jié)點
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2）插入孩子節(jié)點
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2?獲得節(jié)點句柄
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3?判斷某節(jié)點是否有孩子節(jié)點
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4 展開或收縮子節(jié)點
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5?獲得第一個孩子節(jié)點的句柄
6 遍歷hRoot下一層的所有孩子節(jié)點
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7 ?獲得某節(jié)點上的文字
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8?選擇某節(jié)點，并讓其獲得焦點
?? 首先，TREE控件的樣式必須設(shè)置為TVS_SHOWSELALWAYS?
?? 其次： 選擇該節(jié)點
[html] view plaincopy? 最后，設(shè)置焦點
[html] view plaincopyTree控件設(shè)置焦點后，會自動將焦點定位到選擇的節(jié)點上
9??清空樹控件
?10? 將指定目錄下的文件插入節(jié)點
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11 將文件列表中的文件插入樹控件中
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二 擴展操作
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1 響應(yīng)TVN_ITEMEXPANDING? 消息時?? 如何獲得將要展開或收縮的那一個節(jié)點的句柄
MSDN：
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<strong>TVN_ITEMEXPANDING</strong> <em><a target=_blank class="synParam" href="http://blog.csdn.net/shuilan0066/article/details/6638504">pnmtv</a></em> <strong>= (NM_TREEVIEW FAR *)</strong> <em>lParam</em>pnmtv
。。。。。。。。。
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在 TV_ITEM 的 hItem中 存放著要展開項的句柄
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解決：查了這么多，其實很簡單 代碼如下：
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2 怎么知道CTreeCtrl的一個節(jié)點是展開的還是收縮著的
?解決：
方法1
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方法2
響應(yīng)TVN_ITEMEXPANDING事件時：
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?3? 判斷節(jié)點是否被擴展過
[cpp] view plaincopy
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4?? 使用 CImageList m_ImageList; 加載位圖或圖標，并將其與樹控件聯(lián)系在一起，由此便可以設(shè)置每個節(jié)點的圖標
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[cpp] view plaincopy
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?5? 什么時候響應(yīng)OnItemexpanding 消息
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???? 當節(jié)點第一次被展開時，才響應(yīng)此消息。也就是說：當以開后該節(jié)點再展開或收縮時，便不再響應(yīng)此消息了。
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6? 設(shè)置樹控件形式為 TVS_HASBUTTONS|TVS_LINESATROOT 時， 樹控件節(jié)點前才會出現(xiàn)+ - 號
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以下為綜合例子： 點擊按鈕上一個 顯示該節(jié)點的上一個兄弟節(jié)點，并更改控件焦點
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設(shè)置控件樣式：
[html] view plaincopy
點擊按鈕5（焦點移動到上一個兄弟節(jié)點）
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點擊按鈕6（焦點移動到下一個兄弟節(jié)點）
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[html] view plaincopy
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7 ?遍歷樹控件的所有節(jié)點
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1） 獲得根節(jié)點句柄
[cpp] view plaincopy?
2）遍歷所有節(jié)點
[cpp] view plaincopy
8 獲得某Item節(jié)點的全路徑
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獲得Item節(jié)點路徑的函數(shù)
[cpp] view plaincopy
?獲得葉子節(jié)點的函數(shù)
9? 獲得樹中所有葉子節(jié)點的父目錄
??? 即：樹中可能有許多枝干，獲取這些枝干的路徑
[cpp] view plaincopy
[cpp] view plaincopy
總結(jié)
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