RAD Studio VCL Reference
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Adds a new tree node containing data to a tree view.
The node is added as the first child of the node specified by the Node parameter. Nodes that appear after the added node are moved down one row and reindexed with valid Index values. The S parameter specifies the Text property of the new node. The Ptr parameter specifies the Data property value of the new node. AddChildObjectFirst returns the node that has been added.
C++ Examples:
/* The following example adds a new item to the selected item’s list of child items in the tree view control. The new item is added first in the list of child items. The new item is identified by the text ‘New Item’. The TBitmap object is attached to the new item. */ void __fastcall TForm1::Button1Click(TObject *Sender) { Graphics::TBitmap *MyBitMap = new Graphics::TBitmap(); MyBitMap->LoadFromFile("..\\littleB.bmp"); TreeView1->Items->BeginUpdate(); // keep the node from painting until it's built TreeView1->Items->AddChildObjectFirst( TreeView1->Selected, "New Item", MyBitMap); TreeView1->Items->EndUpdate(); }
Delphi Examples:
{ The following example adds a new item to the selected item’s list of child items in the tree view control. The new item is added first in the list of child items. The new item is identified by the text ‘New Item’. The TBitmap object is attached to the new item. } procedure TForm1.Button1Click(Sender: TObject); var MyBitMap : TBitmap; node : TTreeNode; begin MyBitMap := TBitmap.Create; MyBitMap.LoadFromFile('littleB.bmp'); TreeView1.Items.BeginUpdate; node:= TreeView1.Items.AddChildObjectFirst( TreeView1.Selected, 'New Item', MyBitMap); // node.ImageIndex:= -1; TreeView1.Items.EndUpdate; end;
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