treeview 节点的添加。

[asdmusic8]

typedef struct _mycust_treeview_notedata
{
AnsiString id; //项目的ID号
AnsiString name; //项目名称
AnsiString par_id; //父项目的ID号
}mycust_treeview_notedata;

我定义了个结构，

TreeView1->Items->BeginUpdate();
AnsiString data="";
while(!DataModule1->ExcueQuery->Eof)
{
mycust_treeview_notedata temp;
temp.id=DataModule1->ExcueQuery->FieldByName("ID")->AsString;
temp.name=DataModule1->ExcueQuery->FieldByName("NAME")->AsString;
temp.par_id="";
TreeView1->Items->Add(NULL,(AnsiString)temp);
DataModule1->ExcueQuery->Next();
}
TreeView1->Items->EndUpdate();

但是编译没有通过。该怎么写，使它的节点显示的是name, 并且怎么读出来还原成结构。

[踏岸寻柳]

修改局部代码如下即可：
mycust_treeview_notedata temp;
temp.id = DataModule1->ExcueQuery->FieldByName("ID")->AsString;
temp.name = DataModule1->ExcueQuery->FieldByName("NAME")->AsString;
temp.par_id = "";
TreeView1->Items->AddObject( NULL, temp.name, temp );
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
DataModule1->ExcueQuery->Next();

[踏岸寻柳]

这样取出数据：
TTreeNode *pTN = TreeView1->Selected;
ShowMessage( ((mycust_treeview_notedata)pTN->Data)->id ); //id
ShowMessage( ((mycust_treeview_notedata)pTN->Data)->name );//name

[asdmusic8]

那我应该把事件写在那个中 ， 当我点上面我加的节点，然后取出 id ,在根据ID去查询数据库，加入子节点。

[asdmusic8]

void __fastcall TYHZCU31Form::TreeView1MouseDown(TObject *Sender,
TMouseButton Button, TShiftState Shift, int X, int Y)
{
TTreeNode *pNode=TreeView1->GetNodeAt(X,Y);
if(pNode==NULL) return;

if(TreeView1->GetHitTestInfoAt(X,Y).Contains(htOnItem))
{
AnsiString tempid;
tempid=((mycust_treeview_notedata *)(pNode->Data))->id;
if(!pNode->HasChildren)//插入子节点
{

}
}
}
但是 tempid 等于null

[BoyMgl]

TTreeNode * tn = new TTreeNode(TreeView1->Items);
后面就是属性了
TreeView1->Items->Add(tn,"Test");