private void SetGrpState(ListViewGroup lvGroup, ListViewGroupState grpState, string task)
{
if (OSVersion.IsBelow(WindowsVersion.Vista))
{
return;
}
if (lvGroup == null || lvGroup.ListView == null)
{
return;
}
if (lvGroup.ListView.InvokeRequired)
{
lvGroup.ListView.Invoke(new CallBackSetGroupState(SetGrpState), lvGroup, grpState, task);
}
else
{
int? GrpId = GetGroupID(lvGroup);
int gIndex = lvGroup.ListView.Groups.IndexOf(lvGroup);
LVGroup group = new LVGroup();
group.CbSize = Marshal.SizeOf(group);
group.Mask |= ListViewGroupMask.Task
| ListViewGroupMask.State
| ListViewGroupMask.Align;
IntPtr taskString = Marshal.StringToHGlobalAuto(task);
if (task.Length > 1)
{
group.Task = taskString;
group.CchTask = task.Length;
}
group.GroupState = grpState;
if (GrpId != null)
{
group.GroupId = GrpId.Value;
SendMessage(base.Handle, LVM_SetGroupInfo, GrpId.Value, ref group);
}
else
{
group.GroupId = gIndex;
SendMessage(base.Handle, LVM_SetGroupInfo, gIndex, ref group);
}
lvGroup.ListView.Refresh();
Marshal.FreeHGlobal(taskString);
}
}
public TreeViewAdv()
{
InitializeComponent();
this.SetStyle(ControlStyles.AllPaintingInWmPaint | ControlStyles.UserPaint | ControlStyles.OptimizedDoubleBuffer | ControlStyles.ResizeRedraw | ControlStyles.Selectable | ControlStyles.CacheText, true);
if (OSVersion.IsBelow(WindowsVersion.Vista))
{
this.ColumnHeaderHeight = ExplorerVisualStyle.VisualStylesEnabled ? 20 : 17;
}
else
{
this.ColumnHeaderHeight = ExplorerVisualStyle.VisualStylesEnabled ? 25 : 17;
}
//BorderStyle = BorderStyle.Fixed3D;
_hScrollBar.Height = SystemInformation.HorizontalScrollBarHeight;
_vScrollBar.Width = SystemInformation.VerticalScrollBarWidth;
_rowLayout = new FixedRowHeightLayout(this, RowHeight);
this.RowMap = new List <TreeNodeAdv>();
this.Selection = new List <TreeNodeAdv>();
this.SelectedNodes = new ReadOnlyCollection <TreeNodeAdv>(this.Selection);
this.Columns = new TreeColumnCollection(this);
_toolTip = new ToolTip();
_measureContext = new DrawContext
{
Font = this.Font,
Graphics = Graphics.FromImage(new Bitmap(1, 1))
};
this.Input = new NormalInputState(this);
_search = new IncrementalSearch(this);
CreateNodes();
CreatePens();
ArrangeControls();
_plusMinus = new NodePlusMinus(this);
this.NodeControls = new NodeControlsCollection(this);
Font = _font;
}
public void SetImage(MenuItem mnuItem, Image value, bool ignorePending)
{
if (_delaySetImageCalls && !ignorePending)
{
_pendingSetImageCalls.Enqueue(new KeyValuePair <MenuItem, Image>(mnuItem, value));
return;
}
Properties prop = EnsurePropertiesExists(mnuItem);
if (DesignMode)
{
prop.Image = value;
}
if (!DesignMode && OSVersion.IsAboveOrEqual(WindowsVersion.Vista))
{
//Destroy old bitmap object
if (prop.renderBmpHbitmap != IntPtr.Zero)
{
DeleteObject(prop.renderBmpHbitmap);
prop.renderBmpHbitmap = IntPtr.Zero;
}
//if there's no Image, then just bail out
if (value == null)
{
// wj32: clean up resources before doing that...
RemoveVistaMenuItem(mnuItem);
return;
}
//convert to 32bppPArgb (the 'P' means The red, green, and blue components are premultiplied, according to the alpha component.)
Bitmap renderBmp = new Bitmap(value.Width, value.Height, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
Graphics g = Graphics.FromImage(renderBmp);
g.DrawImage(value, 0, 0, value.Width, value.Height);
g.Dispose();
prop.renderBmpHbitmap = renderBmp.GetHbitmap(Color.FromArgb(0, 0, 0, 0));
renderBmp.Dispose();
if (formHasBeenIntialized)
{
AddVistaMenuItem(mnuItem);
}
}
else if (!DesignMode && OSVersion.IsBelow(WindowsVersion.Vista))
{
if (prop.PreVistaBitmap != null)
{
prop.PreVistaBitmap.Dispose();
prop.PreVistaBitmap = null;
}
if (value == null)
{
RemoveVistaMenuItem(mnuItem);
return;
}
Bitmap bmp = new Bitmap(value.Width, value.Height, System.Drawing.Imaging.PixelFormat.Format32bppPArgb);
Graphics g = Graphics.FromImage(bmp);
g.DrawImage(value, 0, 0, value.Width, value.Height);
g.Dispose();
prop.PreVistaBitmap = bmp;
//for every Pre-Vista Windows, add the parent of the menu item to the list of parents
if (formHasBeenIntialized)
{
AddPreVistaMenuItem(mnuItem);
}
}
}
