SftTree/OCX 7.5 - ActiveX Tree Control

Image Property, SftTreeRowHeader Object

Defines the graphic displayed in this row header.

Syntax

Get

Put

object

A SftTreeRowHeader object.

refImageObj

Defines the graphic displayed in this row header.

Comments

The Image property defines the graphic displayed in this row header.

When using fixed height items (see Items.Style), all graphics used in a tree control as Image property at the same time must be the same size (height and width). The dimensions of the graphics are used to calculate the minimum dimension for the row headers, so graphics used as Image property are never clipped vertically. To change the row header graphic size, all row header graphics must be removed first using the RowHeaders.ClearImages method.

When using variable height items (see Items.Style), the graphics used can be of varying size. The item height is adjusted automatically, so graphics 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).

If row headers are disabled (see RowHeaders.Enabled property), the graphic is drawn in a "grayed" fashion, if it is based on a bitmap. Other image types, like color samples, .NET image objects, etc., must be explicitly replaced with a grayed image if a different rendering of a disabled image is desired. Individual items may be disabled using the Item.Enabled property.

The RowHeaders.ClearImages method can be used to remove all row header graphics. The Image property can be set to the value Nothing (NULL), which removes the graphic from the row header.

The position of the row header graphic is determined by the RowHeader.ImageHAlign and RowHeader.ImageVAlign properties.

Examples

VB.NET

    End Sub

    Private Sub PropagateImage(ByVal ItemIndex As Integer, ByVal Img As SftPictureObject)

        ' don't use images that are too large in the other areas
        If Img.ActualHeight <= 20 And Img.ActualWidth < 20 Then
            AxSftTree1.get_Item(ItemIndex).Image = Img
            AxSftTree1.get_Item(ItemIndex).LabelImage = Img
            AxSftTree1.get_Item(ItemIndex).RowHeader.Image = Img
        End If
    End Sub

    Private Sub UpdatePictures(ByVal ItemIndex As Integer, ByVal IPic As stdole.IPictureDisp, ByVal Align As SftTreeHAlignConstants)
        Dim C As SftTreeCell
        C = AxSftTree1.get_Cell(ItemIndex, 0)
        C.Image.Picture = IPic

View Entire Sample Code

VB6

    End Select
End Sub

Private Sub PropagateImage(ByVal ItemIndex As Integer, Img As SftPictureObject)
    ' don't use images that are too large in the other areas
    If Img.ActualHeight <= 20 And Img.ActualWidth < 20 Then
        SftTree1.Item(ItemIndex).Image = Img
        SftTree1.Item(ItemIndex).LabelImage = Img
        SftTree1.Item(ItemIndex).RowHeader.Image = Img
    End If
End Sub

Private Sub UpdatePictures(ByVal ItemIndex As Integer, ByVal Pic As StdPicture, ByVal Align As SftTreeHAlignConstants)
    Dim C As SftTreeCell
    Set C = SftTree1.Cell(ItemIndex, 0)
    Set C.Image.Picture = Pic

View Entire Sample Code

C#

        }

        private void PropagateImage(int ItemIndex, SftPictureObject Img)
        {
            // don't use images that are too large in the other areas
            if (Img.ActualHeight <= 20 && Img.ActualWidth < 20) {
                axSftTree1.get_Item(ItemIndex).Image = Img;
                axSftTree1.get_Item(ItemIndex).LabelImage = Img;
                axSftTree1.get_Item(ItemIndex).RowHeader.Image = Img;
            }
        }

        private void UpdatePictures(int ItemIndex, stdole.IPictureDisp IPic, SftTreeHAlignConstants Align)
        {
            SftTreeCell C = axSftTree1.get_Cell(ItemIndex, 0);
            C.Image.Picture = IPic;

View Entire Sample Code

C++

}

void CPicturesDlg::PropagateImage(long ItemIndex, ISftPictureObjectPtr Img)
{
    // don't use images that are too large in the other areas
    if (Img->ActualHeight <= 20 && Img->ActualWidth < 20) {
        m_vTree->Item[ItemIndex]->Image = Img;
        m_vTree->Item[ItemIndex]->LabelImage = Img;
        m_vTree->Item[ItemIndex]->RowHeader->Image = Img;
    }
}

void CPicturesDlg::UpdateBitmap(long ItemIndex, const CBitmap& bmp, SftTreeHAlignConstants Align)
{
    ISftTreeCellPtr C = m_vTree->Cell[ItemIndex][0];
    C->Image->PutBitmapHandle((OLE_HANDLE)(HBITMAP) bmp);

View Entire Sample Code

See Also SftTreeRowHeader Object | Object Hierarchy