private void CalcScrolling()
{
if (sbVert != null && autoScroll)
{
bool vis = sbVert.Visible;
sbVert.Visible = ClientArea.VirtualHeight > ClientArea.ClientHeight;
if (ClientArea.VirtualHeight <= ClientArea.ClientHeight)
{
sbVert.Value = 0;
}
if (vis != sbVert.Visible)
{
if (!sbVert.Visible)
{
foreach (Control c in ClientArea.Controls)
{
c.TopModifier = 0;
c.Invalidate();
}
}
AdjustMargins();
}
PositionScrollBars();
foreach (Control c in ClientArea.Controls)
{
c.TopModifier = -sbVert.Value;
c.Invalidate();
}
}
if (sbHorz != null && autoScroll)
{
bool vis = sbHorz.Visible;
sbHorz.Visible = ClientArea.VirtualWidth > ClientArea.ClientWidth;
if (ClientArea.VirtualWidth <= ClientArea.ClientWidth)
{
sbHorz.Value = 0;
}
if (vis != sbHorz.Visible)
{
if (!sbHorz.Visible)
{
foreach (Control c in ClientArea.Controls)
{
c.LeftModifier = 0;
sbVert.Refresh();
c.Invalidate();
}
}
AdjustMargins();
}
PositionScrollBars();
foreach (Control c in ClientArea.Controls)
{
c.LeftModifier = -sbHorz.Value;
sbHorz.Refresh();
c.Invalidate();
}
}
}
