private void SetVMaxNum(Control control)
{
if (!m_lstVCache.ContainsKey(control))
{
return;
}
var intoV = ScrollBarHelper.GetVScrollBarInfo(control.Handle);
ScrollbarVEx barV = m_lstVCache[control];
if (control is ScrollableControl)
{
barV.Maximum = intoV.ScrollMax;
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos;
barV.BringToFront();
// barV.Maximum = (control as ScrollableControl).VerticalScroll.Maximum;
// barV.Value = (control as ScrollableControl).VerticalScroll.Value;
}
else if (control is TreeView)
{
var tv = control as TreeView;
barV.Maximum = intoV.ScrollMax * tv.ItemHeight;
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos * tv.ItemHeight;
barV.BringToFront();
//barV.Maximum = GetTreeNodeMaxY(control as TreeView) - control.Height;
//barV.Value = (control as TreeView).AutoScrollOffset.Y;
}
else if (control is TextBox)
{
TextBox txt = (TextBox)control;
barV.Maximum = intoV.ScrollMax * txt.PreferredHeight;
if (txt.ScrollBars == ScrollBars.Both || txt.ScrollBars == ScrollBars.Vertical)
{
barV.Visible = true;
}
else
{
barV.Visible = false;
}
barV.Value = intoV.nPos * txt.PreferredHeight;
barV.BringToFront();
}
else if (control is RichTextBox)
{
bool blnHasVScrollbar = control.IsHandleCreated && (ScrollBarHelper.GetWindowLong(control.Handle, STYLE) & VSCROLL) != 0;
barV.Maximum = intoV.ScrollMax;
barV.Visible = blnHasVScrollbar;
barV.Value = intoV.nPos;
barV.BringToFront();
}
else if (control is ListBox)
{
var lb = control as ListBox;
if (intoV.ScrollMax <= 1)
{
var v = lb.ItemHeight * lb.Items.Count - lb.Height;
if (v > 0)
{
barV.Maximum = v;
}
else
{
barV.Maximum = intoV.ScrollMax * lb.ItemHeight;
}
}
else
{
barV.Maximum = intoV.ScrollMax * lb.ItemHeight;
}
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos * lb.ItemHeight;
barV.BringToFront();
}
else if (control is ComboBox)
{
var lb = control as ComboBox;
if (intoV.ScrollMax <= 1)
{
var v = lb.ItemHeight * lb.Items.Count - lb.Height;
if (v > 0)
{
barV.Maximum = v;
}
else
{
barV.Maximum = intoV.ScrollMax * lb.ItemHeight;
}
}
else
{
barV.Maximum = intoV.ScrollMax * lb.ItemHeight;
}
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos * lb.ItemHeight;
barV.BringToFront();
}
else if (control is ListView)
{
barV.Maximum = intoV.ScrollMax;
barV.Visible = intoV.ScrollMax > 0 && intoV.nMax > 0 && intoV.nPage > 0;
barV.Value = intoV.nPos;
barV.BringToFront();
}
else if (control is DataGridView)
{
bool blnHasVScrollbar = false;
var dgv = (DataGridView)control;
if (dgv.ScrollBars == ScrollBars.Both || dgv.ScrollBars == ScrollBars.Vertical)
{
int _height = dgv.RowTemplate.Height * dgv.Rows.Count;
if (dgv.ColumnHeadersVisible)
{
_height += dgv.ColumnHeadersHeight;
}
blnHasVScrollbar = _height > dgv.Height;
}
barV.Maximum = dgv.Rows.Count;
barV.Visible = blnHasVScrollbar;
barV.Value = dgv.FirstDisplayedScrollingRowIndex;;
barV.BringToFront();
}
}
