void barH_Scroll(object sender, EventArgs e)
{
ScrollbarHEx bar = (ScrollbarHEx)sender;
if (m_lstHCache.ContainsValue(bar))
{
Control c = m_lstHCache.FirstOrDefault(p => p.Value == bar).Key;
if (c is ScrollableControl)
{
(c as ScrollableControl).AutoScrollPosition = new Point(bar.Value, (c as ScrollableControl).AutoScrollPosition.Y);
}
else if (c is TreeView)
{
ScrollBarHelper.SetHScrollValue(c.Handle, bar.Value);
//TreeView tv = (c as TreeView);
//SetTreeViewVScrollLocation(tv, tv.Nodes, bar.Value);
}
else if (c is TextBox)
{
ScrollBarHelper.SetHScrollValue(c.Handle, bar.Value);
//TextBox txt = (c as TextBox);
//SetTextBoxVScrollLocation(txt, bar.Value);
}
else if (c is RichTextBox)
{
ScrollBarHelper.SetHScrollValue(c.Handle, bar.Value);
}
else if (c is ListBox)
{
ScrollBarHelper.SetHScrollValue(c.Handle, bar.Value);
}
else if (c is ComboBox)
{
ScrollBarHelper.SetHScrollValue(c.Handle, bar.Value);
}
else if (c is ListView)
{
ScrollBarHelper.SetHScrollValue(c.Handle, bar.Value);
}
else if (c is DataGridView)
{
var dgv = (DataGridView)c;
dgv.HorizontalScrollingOffset = bar.Value;
}
}
}
private void SetHMaxNum(Control control)
{
if (!m_lstHCache.ContainsKey(control))
{
return;
}
var intoH = ScrollBarHelper.GetHScrollBarInfo(control.Handle);
ScrollbarHEx barH = m_lstHCache[control];
if (control is ScrollableControl)
{
barH.Maximum = intoH.ScrollMax;
barH.Visible = intoH.ScrollMax > 0 && intoH.nMax > 0 && intoH.nPage > 0;
barH.Value = intoH.nPos;
barH.BringToFront();
//barH.Maximum = (control as ScrollableControl).HorizontalScroll.Maximum;
//barH.Value = (control as ScrollableControl).HorizontalScroll.Value;
}
else if (control is TreeView)
{
var tv = control as TreeView;
barH.Maximum = intoH.ScrollMax;
barH.Visible = intoH.ScrollMax > 0 && intoH.nMax > 0 && intoH.nPage > 0;
barH.Value = intoH.nPos;
barH.BringToFront();
//barH.Maximum = GetTreeNodeMaxX(control as TreeView);
//barH.Value = (control as TreeView).AutoScrollOffset.X;
}
else if (control is TextBox)
{
TextBox txt = (TextBox)control;
barH.Maximum = intoH.ScrollMax;
if (txt.ScrollBars == ScrollBars.Both || txt.ScrollBars == ScrollBars.Horizontal)
{
barH.Visible = true;
}
else
{
barH.Visible = false;
}
barH.Value = intoH.nPos;
barH.BringToFront();
}
else if (control is RichTextBox)
{
bool blnHasHScrollbar = control.IsHandleCreated && (ScrollBarHelper.GetWindowLong(control.Handle, STYLE) & HSCROLL) != 0;
barH.Maximum = intoH.ScrollMax;
barH.Visible = blnHasHScrollbar;
barH.Value = intoH.nPos;
barH.BringToFront();
}
else if (control is ListBox)
{
var lb = control as ListBox;
barH.Maximum = intoH.ScrollMax * lb.ItemHeight;
barH.Visible = intoH.ScrollMax > 0 && intoH.nMax > 0 && intoH.nPage > 0;
barH.Value = intoH.nPos * lb.ItemHeight;
barH.BringToFront();
}
else if (control is ComboBox)
{
var lb = control as ComboBox;
barH.Maximum = intoH.ScrollMax * lb.ItemHeight;
barH.Visible = intoH.ScrollMax > 0 && intoH.nMax > 0 && intoH.nPage > 0;
barH.Value = intoH.nPos * lb.ItemHeight;
barH.BringToFront();
}
else if (control is ListView)
{
barH.Maximum = intoH.ScrollMax;
barH.Visible = intoH.ScrollMax > 0 && intoH.nMax > 0 && intoH.nPage > 0;
barH.Value = intoH.nPos;
barH.BringToFront();
}
else if (control is DataGridView)
{
bool blnHasHScrollbar = false;
var dgv = (DataGridView)control;
int _width = 0;
if (dgv.ScrollBars == ScrollBars.Both || dgv.ScrollBars == ScrollBars.Horizontal)
{
foreach (DataGridViewColumn com in dgv.Columns)
{
_width += com.Width;
}
if (dgv.RowHeadersVisible)
{
_width += dgv.RowHeadersWidth;
}
blnHasHScrollbar = _width > dgv.Width;
}
if (blnHasHScrollbar)
{
barH.Maximum = _width - dgv.Width;
}
barH.Visible = blnHasHScrollbar;
barH.Value = dgv.FirstDisplayedScrollingColumnHiddenWidth;
barH.BringToFront();
}
}
void control_SizeChanged(object sender, EventArgs e)
{
if (this.DesignMode)
{
return;
}
else
{
var control = sender as Control;
bool blnHasVScrollbar = control.IsHandleCreated && (ScrollBarHelper.GetWindowLong(control.Handle, STYLE) & VSCROLL) != 0;
bool blnHasHScrollbar = control.IsHandleCreated && (ScrollBarHelper.GetWindowLong(control.Handle, STYLE) & HSCROLL) != 0;
if (control is TextBox)
{
var txt = (TextBox)control;
if (txt.ScrollBars == ScrollBars.Both)
{
blnHasVScrollbar = true;
blnHasHScrollbar = true;
}
else if (txt.ScrollBars == ScrollBars.Vertical)
{
blnHasVScrollbar = true;
blnHasHScrollbar = false;
}
else if (txt.ScrollBars == ScrollBars.Horizontal)
{
blnHasVScrollbar = false;
blnHasHScrollbar = true;
}
else
{
blnHasVScrollbar = false;
blnHasHScrollbar = false;
}
}
else if (control is DataGridView)
{
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;
}
if (dgv.ScrollBars == ScrollBars.Both || dgv.ScrollBars == ScrollBars.Horizontal)
{
int _width = 0;
foreach (DataGridViewColumn com in dgv.Columns)
{
_width += com.Width;
}
if (dgv.RowHeadersVisible)
{
_width += dgv.RowHeadersWidth;
}
blnHasHScrollbar = _width > dgv.Width;
}
}
else if (control is ListView)
{
if (!((ListView)control).Scrollable)
{
blnHasVScrollbar = false;
blnHasHScrollbar = false;
}
}
if (blnHasVScrollbar)
{
if (!m_lstVCache.ContainsKey(control))
{
if (control.Parent != null)
{
ScrollbarVEx barV = new ScrollbarVEx();
barV.SmallChange = 5;
barV.Width = SystemInformation.VerticalScrollBarWidth + 1;
barV.Scroll += barV_Scroll;
m_lstVCache[control] = barV;
if (blnHasHScrollbar)
{
barV.Height = control.Height - barV.Width;
}
else
{
barV.Height = control.Height;
}
SetVMaxNum(control);
barV.Location = new System.Drawing.Point(control.Right - barV.Width, control.Top);
control.Parent.Controls.Add(barV);
int intControlIndex = control.Parent.Controls.GetChildIndex(control);
control.Parent.Controls.SetChildIndex(barV, intControlIndex);
}
}
else
{
if (blnHasHScrollbar)
{
m_lstVCache[control].Height = control.Height - m_lstVCache[control].Width;
}
else
{
m_lstVCache[control].Height = control.Height;
}
SetVMaxNum(control);
}
}
else
{
if (m_lstVCache.ContainsKey(control) && m_lstVCache[control].Parent != null)
{
m_lstVCache[control].Visible = false;
}
}
if (blnHasHScrollbar)
{
if (!m_lstHCache.ContainsKey(control))
{
if (control.Parent != null)
{
ScrollbarHEx barH = new ScrollbarHEx();
barH.Height = SystemInformation.HorizontalScrollBarHeight + 1;
barH.SmallChange = 5;
barH.Scroll += barH_Scroll;
m_lstHCache[control] = barH;
if (blnHasHScrollbar)
{
barH.Width = control.Width - barH.Height;
}
else
{
barH.Width = control.Width;
}
SetHMaxNum(control);
barH.Location = new System.Drawing.Point(control.Left, control.Bottom - barH.Height);
control.Parent.Controls.Add(barH);
int intControlIndex = control.Parent.Controls.GetChildIndex(control);
control.Parent.Controls.SetChildIndex(barH, intControlIndex);
}
}
else
{
if (blnHasHScrollbar)
{
m_lstHCache[control].Width = control.Width - m_lstHCache[control].Height;
}
else
{
m_lstHCache[control].Width = control.Width;
}
SetHMaxNum(control);
}
}
else
{
if (m_lstHCache.ContainsKey(control))
{
if (m_lstHCache[control].Visible && m_lstHCache[control].Parent != null)
{
m_lstHCache[control].Visible = false;
}
}
}
}
ResetScrollLocation(sender);
}