TopIndex Property, SftTreeItems Object
Defines the index of the first item displayed in the tree control's client area.
Syntax
Get
| VB.NET | ItemIndex = object.TopIndex As Integer |
| VB | ItemIndex = object.TopIndex As Long |
| C#.NET | int ItemIndex = object.TopIndex; |
| VC++ | long ItemIndex = object->TopIndex;
long ItemIndex = object->GetTopIndex(); |
| C | HRESULT object->get_TopIndex(long* ItemIndex); |
Put
| VB.NET | object.TopIndex = ItemIndex As Integer |
| VB | object.TopIndex = ItemIndex As Long |
| C#.NET | int object.TopIndex = ItemIndex; |
| VC++ | long object->TopIndex = ItemIndex;
void object->PutTopIndex(long ItemIndex); |
| C | HRESULT object->put_TopIndex(long ItemIndex); |
object
A SftTreeItems object.
ItemIndex
Defines the index of the first item displayed in the tree control's client area.
Comments
The TopIndex property defines the index of the first item displayed in the tree control's client area.
The Item.MakeVisible method can be used to insure that an item is displayed anywhere in the tree control area. The TopIndex property is used to make the item specified the very first item shown in the tree control area.
Examples
VB.NET
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
m_PicCount = 0
AxSftTree1.VirtualMode = True
AxSftTree1.VirtualCount(10000000)
AxSftTree1.VirtualImageSizes(16, 16, 16, 16, 16, 16, 16, 16)
' Make columns and row headers optimal
' but do this at the end of the list, because our sample
' data is larger at the end
AxSftTree1.Items.TopIndex = AxSftTree1.Items.Count - 1
AxSftTree1.ColumnsObj.MakeOptimal()
AxSftTree1.RowHeaders.MakeOptimal()
AxSftTree1.Items.RecalcHorizontalExtent()
AxSftTree1.Items.TopIndex = 0
End Sub
Private Sub Timer1_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles Timer1.Tick View Entire Sample Code
VB6
ScrollTips = 1
SelectionArea = 0
SelectStyle = 0
ShowFocusRectangle= 1
ToolTipAlways = 0
ToolTipBackColor= -1
ToolTipForeColor= -1
ToolTipsUseEntireCell= 1
TopIndex = 0
TreeLineColor = -2147483630
TreeLineGrayedColor= -2147483631
TreeLineStyle = 0
UpdateCurrentExpandCollapse= 0
OutlineStyle = 0
SelectOutlineBorderColor= -1
SelectInnerBorderColor= -1 View Entire Sample Code
C#
private void Form1_Load(object sender, System.EventArgs e) {
m_PicCount = 0;
axSftTree1.VirtualMode = true;
axSftTree1.VirtualCount(10000000);
axSftTree1.VirtualImageSizes(16, 16, 16, 16, 16, 16, 16, 16);
// Make columns and row headers optimal
// but do this at the end of the list, because our sample
// data is larger at the end
axSftTree1.Items.TopIndex = axSftTree1.Items.Count - 1;
axSftTree1.ColumnsObj.MakeOptimal();
axSftTree1.RowHeaders.MakeOptimal();
axSftTree1.Items.RecalcHorizontalExtent();
axSftTree1.Items.TopIndex = 0;
}
private void Timer1_Tick(object sender, System.EventArgs e) { View Entire Sample Code
C++
ASSERT(m_vTree != NULL);
m_vTree->VirtualMode = VARIANT_TRUE;
m_vTree->VirtualCount(10000000);
m_vTree->VirtualImageSizes(16, 16, 16, 16, 16, 16, 16, 16);
// Make columns and row headers optimal
// but do this at the end of the list, because our sample
// data is larger at the end
m_vTree->Items->TopIndex = m_vTree->Items->Count - 1;
m_vTree->ColumnsObj->MakeOptimal();
m_vTree->RowHeaders->MakeOptimal();
m_vTree->Items->RecalcHorizontalExtent();
m_vTree->Items->TopIndex = 0;
SetTimer(TIMER_ID, 100, NULL);
View Entire Sample Code
See Also SftTreeItems Object | Object Hierarchy
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