SftTree/OCX 7.5 - ActiveX Tree Control

Image Property, SftTreeRowColumnHeader Object

Defines the graphic displayed in the row/column header.

Syntax

Get

Put

object

A SftTreeRowColumnHeader object.

refImageObj

Defines the graphic displayed in the row/column header.

Comments

The Image property defines the graphic displayed in the row/column header.

The dimensions of the graphics are used to calculate the minimum dimension for the row/column header, row headers and column headers, so graphics used as Image property are never clipped vertically.

If the image object refImageObj defines a bitmap, the top, left pixel of the bitmap must contain the bitmap's background color. This color will be replaced throughout the bitmap with the actual background (see Bitmap Transparency).

The Image property can be set to the value Nothing (NULL), which removes the graphic from the row/column header.

The position of the row/column header graphic is determined by the RowColumnHeader.ImageHAlign, RowColumnHeader.ImageVAlign, RowColumnHeader.TextHAlign and RowColumnHeader.TextVAlign properties.

Examples

VB.NET

        Dim Img As SftPictureObject

        ItemIndex = AxSftTree1.Items.Current
        If ItemIndex < 0 Then Exit Sub

        ' don't use images that are too large in the other areas
        Img = AxSftTree1.get_Cell(ItemIndex, 0).Image
        If Img.ActualHeight <= 20 And Img.ActualWidth <= 20 Then
            AxSftTree1.RowColumnHeader.Image = Img
            AxSftTree1.get_Header(1).Image = Img
        Else
            AxSftTree1.RowColumnHeader.Image.Clear()
            AxSftTree1.get_Header(1).Image.Clear()
        End If
    End Sub

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VB6

    Dim Img As SftPictureObject

    ItemIndex = SftTree1.Items.Current
    If ItemIndex < 0 Then Exit Sub

    ' don't use images that are too large in the other areas
    Set Img = SftTree1.Cell(ItemIndex, 0).Image
    If Img.ActualHeight <= 20 And Img.ActualWidth <= 20 Then
        SftTree1.RowColumnHeader.Image = Img
        SftTree1.Header(1).Image = Img
    Else
        SftTree1.RowColumnHeader.Image.Clear
        SftTree1.Header(1).Image.Clear
    End If

End Sub

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C#

            ItemIndex = axSftTree1.Items.Current;
            if (ItemIndex < 0)
                return;

            // don't use images that are too large in the other areas
            Img = axSftTree1.get_Cell(ItemIndex, 0).Image;
            if (Img.ActualHeight <= 20 && Img.ActualWidth <= 20) {
                axSftTree1.RowColumnHeader.Image = Img;
                axSftTree1.get_Header(1).Image = Img;
            } else {
                axSftTree1.RowColumnHeader.Image.Clear();
                axSftTree1.get_Header(1).Image.Clear();
            }
        }

        private void ToggleImage(SftPictureObject Img)

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C++

void CPicturesDlg::CopyImageFromCurrentItem()
{
    long ItemIndex = m_vTree->Items->Current;
    if (ItemIndex < 0) return;

    // don't use images that are too large in the other areas
    ISftPictureObjectPtr pImg = m_vTree->Cell[ItemIndex][0]->Image;
    if (pImg->ActualHeight <= 20 && pImg->ActualWidth <= 20) {
        m_vTree->RowColumnHeader->Image = pImg;
        m_vTree->Header[1]->Image = pImg;
    } else {
        m_vTree->RowColumnHeader->Image->Clear();
        m_vTree->Header[1]->Image->Clear();
    }
}

View Entire Sample Code

See Also SftTreeRowColumnHeader Object | Object Hierarchy