// Create the approiate child this can return null if that child does not exist
internal ProxyFragment CreateNonClientChild(NonClientItem item)
{
switch (item)
{
case NonClientItem.HScrollBar:
if (WindowsScrollBar.HasHorizontalScrollBar(_hwnd))
{
// the listview needs special handling WindowsListViewScrollBar inherits from WindowsScrollBar
// and overrides some of its behavoir
if (Misc.ProxyGetClassName(_hwnd) == "SysListView32")
{
return(new WindowsListViewScrollBar(_hwnd, this, (int)item, NativeMethods.SB_HORZ));
}
else
{
return(new WindowsScrollBar(_hwnd, this, (int)item, NativeMethods.SB_HORZ));
}
}
break;
case NonClientItem.VScrollBar:
if (WindowsScrollBar.HasVerticalScrollBar(_hwnd))
{
// the listview needs special handling WindowsListViewScrollBar inherits from WindowsScrollBar
// and overrides some of its behavoir
if (Misc.ProxyGetClassName(_hwnd) == "SysListView32")
{
return(new WindowsListViewScrollBar(_hwnd, this, (int)item, NativeMethods.SB_VERT));
}
else
{
return(new WindowsScrollBar(_hwnd, this, (int)item, NativeMethods.SB_VERT));
}
}
break;
case NonClientItem.TitleBar:
{
// Note 2 checks above will succeed for the win32popup menu, hence adding this last one
if (WindowsTitleBar.HasTitleBar(_hwnd))
{
return(new WindowsTitleBar(_hwnd, this, (int)item));
}
break;
}
case NonClientItem.Menu:
{
return(CreateNonClientMenu());
}
case NonClientItem.Grip:
{
int style = WindowStyle;
if (Misc.IsBitSet(style, NativeMethods.WS_VSCROLL) && Misc.IsBitSet(style, NativeMethods.WS_HSCROLL))
{
if (WindowsGrip.IsGripPresent(_hwnd, false))
{
return(new WindowsGrip(_hwnd, this, (int)item));
}
}
break;
}
default:
return(null);
}
return(null);
}
