/// <summary>
/// Einige Steuerelemente haben einige wenige hässliche Elemente aus dem Skin; an diese Steuerelemente kommt man über den MessageFilter ran
/// </summary>
public bool PreFilterMessage(ref Message message)
{
Control control = Control.FromHandle(message.HWnd);
// System.Diagnostics.Debug.WriteLineIf(control!=null,control);
ScrollBarBase scrollBar = control as ScrollBarBase; // hässliche Scrollbalken durch Systemstandard ersetzen
if (scrollBar != null && scrollBar.LookAndFeel.UseDefaultLookAndFeel)
{
scrollBar.LookAndFeel.UseDefaultLookAndFeel = false;
scrollBar.LookAndFeel.UseWindowsXPTheme = true;
scrollBar.LookAndFeel.SetWindowsXPStyle();
}
XtraForm xtraForm = control as XtraForm;
if (xtraForm != null)
{
foreach (ISupportLookAndFeel supportLookAndFeel in xtraForm.Controls.OfType <ISupportLookAndFeel>()) // hässliche Buttons & Checkboxen
{
if (supportLookAndFeel.LookAndFeel.UseDefaultLookAndFeel)
{
supportLookAndFeel.LookAndFeel.UseDefaultLookAndFeel = false;
supportLookAndFeel.LookAndFeel.UseWindowsXPTheme = true;
supportLookAndFeel.LookAndFeel.SetWindowsXPStyle();
}
}
}
return(false);
}
protected override VCrkScrollBar CreateVScroll()
{
VCrkScrollBar res = new InvertedVCrkScrollBar(this);
ScrollBarBase.ApplyUIMode(res);
res.RightToLeft = RightToLeft.No;
return(res);
}
protected override void UpdateDXScrollBar(bool isHorz)
{
if (IsLockUpdate)
{
return;
}
ScrollBarBase dxScroll = isHorz ? (ScrollBarBase)HScroll : (ScrollBarBase)VScroll;
if (SourceControl == null)
{
return;
}
if (!SourceControl.IsHandleCreated || !dxScroll.Parent.IsHandleCreated)
{
dxScroll.Visible = false;
return;
}
BeginUpdate();
try
{
SCROLLBARINFO sbInfo = new SCROLLBARINFO();
sbInfo.Init();
SCROLLBARINFO.GetScrollBarInfo(SourceControl.Handle, isHorz ? SCROLLBARINFO.OBJID_HSCROLL : SCROLLBARINFO.OBJID_VSCROLL, ref sbInfo);
Rectangle scrollBounds = sbInfo.rcScrollBar.ToRectangle();
if ((SourceControl != null && !SourceControl.Visible) || scrollBounds.IsEmpty || sbInfo.rgstate0 == SCROLLBARINFO.STATE_SYSTEM_INVISIBLE || sbInfo.rgstate0 == SCROLLBARINFO.STATE_SYSTEM_OFFSCREEN)
{
dxScroll.Visible = false;
return;
}
scrollBounds = dxScroll.Parent.RectangleToClient(scrollBounds);
if (isHorz)
{
scrollBounds.Height = fWidth;
}
else
{
scrollBounds.Width = fWidth;
}
dxScroll.Bounds = scrollBounds;
ScrollArgs currentArgs = new ScrollArgs(dxScroll), args = new ScrollArgs();
if (sbInfo.rgstate0 == SCROLLBARINFO.STATE_SYSTEM_UNAVAILABLE)
{
args.Maximum = args.Minimum = 0;
args.Value = 0;
args.Enabled = false;
}
else
{
SCROLLINFO sInfo = new SCROLLINFO();
sInfo.Init();
SCROLLINFO.GetScrollInfo(SourceControl.Handle, isHorz ? SCROLLINFO.SB_HORZ : SCROLLINFO.SB_VERT, ref sInfo);
args.Enabled = true;
args.Maximum = sInfo.nMax;
args.Minimum = sInfo.nMin;
args.LargeChange = sInfo.nPage;
args.SmallChange = isHorz ? 8 : 1;
args.Value = sInfo.nTrackPos;
}
dxScroll.Visible = true;
if (currentArgs.IsEquals(args))
{
return;
}
args.AssignTo(dxScroll);
}
finally
{
EndUpdate();
}
}
protected internal virtual void EndScrollbarUpdate(ScrollBarBase scrollbar);
