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开发学院软件开发C++ 用TreeView浏览目录 阅读

用TreeView浏览目录

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核心提示:void __fastcall TForm1::FormCreate(TObject *Sender) { CurrentDir=GetCurrentDir(); UpdateTreeView(); UpdateListView(); } //--- void __fastcall TForm1::UpdateTree

  void __fastcall TForm1::FormCreate(TObject *Sender)
{
CurrentDir=GetCurrentDir();
UpdateTreeView();
UpdateListView();
}
//---------------------------------------------------------------------------
void __fastcall TForm1::UpdateTreeView()
{
TTreeNode *rNode,*mNode;
TreeView1->Items->Clear();
rNode=TreeView1->Items->Add(TreeView1->Selected,"我的电脑");
rNode->ImageIndex=1;
rNode->SelectedIndex=1;
mNode=TreeView1->Items->AddChild(rNode,"A:");
mNode->ImageIndex=2;
mNode->SelectedIndex=2;
AddDirectory("A:",mNode);
for(int i=1;i<DriveComboBox1->Items->Count;i++)
 {
 mNode=TreeView1->Items->AddChild(rNode,AnsiString(char('B'+i))+":");
 mNode->ImageIndex=3;
 mNode->SelectedIndex=3;
 AddDirectory(AnsiString(char('B'+i))+":",mNode);
 }
}

//------------------------------------------------------------------------
void TForm1::AddDirectory(AnsiString path,TTreeNode *fNode)
{
TSearchRec sr;
TTreeNode *mNode;
if(FindFirst(path+"\\*.*" ,faDirectory,sr)==0)
 {
 if(sr.Attr==faDirectory)
  {
  if(sr.Name!="."&&sr.Name!="..")
   {
   mNode=TreeView1->Items->AddChild(fNode,sr.Name);
   mNode->ImageIndex=0;
   mNode->SelectedIndex=4;
   // AddDirectory(path+"\\"+sr.Name,mNode);
   }
  }
 }
while(FindNext(sr)==0)
 {
 if(sr.Attr==faDirectory)
  {
  if(sr.Name!="."&&sr.Name!="..")
   {
   mNode=TreeView1->Items->AddChild(fNode,sr.Name);
   mNode->ImageIndex=0;
   mNode->SelectedIndex=4;
   // AddDirectory(path+"\\"+sr.Name,mNode);
   }
  }
 }
FindClose(sr);
}

//--------------------------------------------------------------------

void __fastcall TForm1::TreeView1Changing(TObject *Sender, TTreeNode *Node, bool &AllowChange)
{
Screen->Cursor=crHourGlass;
TSearchRec sr;
TTreeNode *NodeTmp=Node;
AnsiString DirName,DirTmp;
DirName=Node->Text;
for(int i=Node->Level;i>1;i--)
 {
 NodeTmp=NodeTmp->Parent;
 DirTmp=NodeTmp->Text;
 if(DirTmp.SubString(DirTmp.Length(),1)!="\\")
 DirTmp+="\\";
 DirName.Insert(DirTmp,0);
 }
if(DirName.SubString(DirName.Length(),1)!="\\")
 DirName+="\\";
for(int j=0;j<Node->Count;j++)
 {
 if(Node->Item[j]->Count==0);
  {
  if(FindFirst(DirName+Node->Item[j]->Text+"\\*.*", faAnyFile, sr) == 0)
   {
   do
    {
    //Node->Item[j]->ImageIndex=5;
    //Node->Item[j]->SelectedIndex=4;
    if((sr.Attr&faDirectory)&&sr.Name!="."&&sr.Name!="..")
     {
     Node->Item[j]->ImageIndex=0;
     Node->Item[j]->SelectedIndex=4;
     TreeView1->Items->AddChild(Node->Item[j],sr.Name);
     }
    }
    while (FindNext(sr)==0);
    FindClose(sr);
   }
  }
 }
Screen->Cursor=crDefault;
}

Tags:TreeView 浏览 目录

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