private void UpdateNode(int mask)
{
if (this.handle != IntPtr.Zero)
{
System.Windows.Forms.TreeView treeView = this.TreeView;
System.Windows.Forms.NativeMethods.TV_ITEM lParam = new System.Windows.Forms.NativeMethods.TV_ITEM {
mask = 0x10 | mask,
hItem = this.handle
};
if ((mask & 1) != 0)
{
lParam.pszText = Marshal.StringToHGlobalAuto(this.text);
}
if ((mask & 2) != 0)
{
lParam.iImage = (this.ImageIndexer.ActualIndex == -1) ? treeView.ImageIndexer.ActualIndex : this.ImageIndexer.ActualIndex;
}
if ((mask & 0x20) != 0)
{
lParam.iSelectedImage = (this.SelectedImageIndexer.ActualIndex == -1) ? treeView.SelectedImageIndexer.ActualIndex : this.SelectedImageIndexer.ActualIndex;
}
if ((mask & 8) != 0)
{
lParam.stateMask = 0xf000;
if (this.StateImageIndexer.ActualIndex != -1)
{
lParam.state = (this.StateImageIndexer.ActualIndex + 1) << 12;
}
}
if ((mask & 4) != 0)
{
lParam.lParam = this.handle;
}
System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(treeView, treeView.Handle), System.Windows.Forms.NativeMethods.TVM_SETITEM, 0, ref lParam);
if ((mask & 1) != 0)
{
Marshal.FreeHGlobal(lParam.pszText);
if (treeView.Scrollable)
{
treeView.ForceScrollbarUpdate(false);
}
}
}
}
private void ResetExpandedState(System.Windows.Forms.TreeView tv)
{
System.Windows.Forms.NativeMethods.TV_ITEM lParam = new System.Windows.Forms.NativeMethods.TV_ITEM {
mask = 0x18,
hItem = this.handle,
stateMask = 0x40,
state = 0
};
System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(tv, tv.Handle), System.Windows.Forms.NativeMethods.TVM_SETITEM, 0, ref lParam);
}
internal void UpdateImage()
{
System.Windows.Forms.NativeMethods.TV_ITEM lParam = new System.Windows.Forms.NativeMethods.TV_ITEM {
mask = 0x12,
hItem = this.Handle,
iImage = Math.Max(0, (this.ImageIndexer.ActualIndex >= this.TreeView.ImageList.Images.Count) ? (this.TreeView.ImageList.Images.Count - 1) : this.ImageIndexer.ActualIndex)
};
System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this.TreeView, this.TreeView.Handle), System.Windows.Forms.NativeMethods.TVM_SETITEM, 0, ref lParam);
}
protected override void WndProc(ref Message m)
{
switch (m.Msg)
{
case 0x4e:
{
System.Windows.Forms.NativeMethods.NMHDR lParam = (System.Windows.Forms.NativeMethods.NMHDR) m.GetLParam(typeof(System.Windows.Forms.NativeMethods.NMHDR));
switch (lParam.code)
{
case -521:
if (!this.WmShowToolTip(ref m))
{
base.WndProc(ref m);
return;
}
m.Result = (IntPtr) 1;
return;
case -520:
case -530:
System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(lParam, lParam.hwndFrom), 0x418, 0, SystemInformation.MaxWindowTrackSize.Width);
this.WmNeedText(ref m);
m.Result = (IntPtr) 1;
return;
}
base.WndProc(ref m);
return;
}
case 0x7b:
{
if (this.treeViewState[0x2000])
{
this.treeViewState[0x2000] = false;
base.WndProc(ref m);
return;
}
TreeNode selectedNode = this.SelectedNode;
if ((selectedNode == null) || ((selectedNode.ContextMenu == null) && (selectedNode.ContextMenuStrip == null)))
{
base.WndProc(ref m);
return;
}
Point pt = new Point(selectedNode.Bounds.X, selectedNode.Bounds.Y + (selectedNode.Bounds.Height / 2));
if (base.ClientRectangle.Contains(pt))
{
if (selectedNode.ContextMenu != null)
{
selectedNode.ContextMenu.Show(this, pt);
return;
}
if (selectedNode.ContextMenuStrip == null)
{
return;
}
bool isKeyboardActivated = ((int) ((long) m.LParam)) == -1;
selectedNode.ContextMenuStrip.ShowInternal(this, pt, isKeyboardActivated);
}
return;
}
case 0x83:
case 5:
case 70:
case 0x47:
if (this.treeViewState[0x8000])
{
this.DefWndProc(ref m);
return;
}
base.WndProc(ref m);
return;
case 7:
if (!this.treeViewState[0x4000])
{
base.WndProc(ref m);
return;
}
this.treeViewState[0x4000] = false;
base.WmImeSetFocus();
this.DefWndProc(ref m);
this.OnGotFocus(EventArgs.Empty);
return;
case 0x15:
base.SendMessage(0x1107, this.Indent, 0);
base.WndProc(ref m);
return;
case 0x201:
{
try
{
this.treeViewState[0x10000] = true;
this.FocusInternal();
}
finally
{
this.treeViewState[0x10000] = false;
}
this.treeViewState[0x1000] = false;
System.Windows.Forms.NativeMethods.TV_HITTESTINFO tv_hittestinfo = new System.Windows.Forms.NativeMethods.TV_HITTESTINFO {
pt_x = System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam),
pt_y = System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam)
};
this.hNodeMouseDown = System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, base.Handle), 0x1111, 0, tv_hittestinfo);
if ((tv_hittestinfo.flags & 0x40) != 0)
{
this.OnMouseDown(new MouseEventArgs(MouseButtons.Left, 1, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam), 0));
if (!base.ValidationCancelled && this.CheckBoxes)
{
TreeNode node = this.NodeFromHandle(this.hNodeMouseDown);
if (!this.TreeViewBeforeCheck(node, TreeViewAction.ByMouse) && (node != null))
{
node.CheckedInternal = !node.CheckedInternal;
this.TreeViewAfterCheck(node, TreeViewAction.ByMouse);
}
}
m.Result = IntPtr.Zero;
}
else
{
this.WmMouseDown(ref m, MouseButtons.Left, 1);
}
this.downButton = MouseButtons.Left;
return;
}
case 0x202:
case 0x205:
{
System.Windows.Forms.NativeMethods.TV_HITTESTINFO tv_hittestinfo2 = new System.Windows.Forms.NativeMethods.TV_HITTESTINFO {
pt_x = System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam),
pt_y = System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam)
};
IntPtr handle = System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, base.Handle), 0x1111, 0, tv_hittestinfo2);
if (handle != IntPtr.Zero)
{
if (!base.ValidationCancelled && (!this.treeViewState[0x800] & !this.treeViewState[0x1000]))
{
if (handle == this.hNodeMouseDown)
{
this.OnNodeMouseClick(new TreeNodeMouseClickEventArgs(this.NodeFromHandle(handle), this.downButton, 1, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam)));
}
this.OnClick(new MouseEventArgs(this.downButton, 1, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam), 0));
this.OnMouseClick(new MouseEventArgs(this.downButton, 1, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam), 0));
}
if (this.treeViewState[0x800])
{
this.treeViewState[0x800] = false;
if (!base.ValidationCancelled)
{
this.OnNodeMouseDoubleClick(new TreeNodeMouseClickEventArgs(this.NodeFromHandle(handle), this.downButton, 2, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam)));
this.OnDoubleClick(new MouseEventArgs(this.downButton, 2, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam), 0));
this.OnMouseDoubleClick(new MouseEventArgs(this.downButton, 2, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam), 0));
}
}
}
if (!this.treeViewState[0x1000])
{
this.OnMouseUp(new MouseEventArgs(this.downButton, 1, System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam), System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam), 0));
}
this.treeViewState[0x800] = false;
this.treeViewState[0x1000] = false;
base.CaptureInternal = false;
this.hNodeMouseDown = IntPtr.Zero;
return;
}
case 0x203:
this.WmMouseDown(ref m, MouseButtons.Left, 2);
this.treeViewState[0x800] = true;
this.treeViewState[0x1000] = false;
base.CaptureInternal = true;
return;
case 0x204:
{
this.treeViewState[0x1000] = false;
System.Windows.Forms.NativeMethods.TV_HITTESTINFO tv_hittestinfo3 = new System.Windows.Forms.NativeMethods.TV_HITTESTINFO {
pt_x = System.Windows.Forms.NativeMethods.Util.SignedLOWORD(m.LParam),
pt_y = System.Windows.Forms.NativeMethods.Util.SignedHIWORD(m.LParam)
};
this.hNodeMouseDown = System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(this, base.Handle), 0x1111, 0, tv_hittestinfo3);
this.WmMouseDown(ref m, MouseButtons.Right, 1);
this.downButton = MouseButtons.Right;
return;
}
case 0x206:
this.WmMouseDown(ref m, MouseButtons.Right, 2);
this.treeViewState[0x800] = true;
this.treeViewState[0x1000] = false;
base.CaptureInternal = true;
return;
case 0x207:
this.treeViewState[0x1000] = false;
this.WmMouseDown(ref m, MouseButtons.Middle, 1);
this.downButton = MouseButtons.Middle;
return;
case 0x209:
this.treeViewState[0x1000] = false;
this.WmMouseDown(ref m, MouseButtons.Middle, 2);
return;
case 0x2a3:
this.prevHoveredNode = null;
base.WndProc(ref m);
return;
case 0x114:
base.WndProc(ref m);
if (this.DrawMode == TreeViewDrawMode.OwnerDrawAll)
{
base.Invalidate();
}
return;
case 0x113f:
case 0x110d:
base.WndProc(ref m);
if (this.CheckBoxes)
{
System.Windows.Forms.NativeMethods.TV_ITEM tv_item = (System.Windows.Forms.NativeMethods.TV_ITEM) m.GetLParam(typeof(System.Windows.Forms.NativeMethods.TV_ITEM));
if (!(tv_item.hItem != IntPtr.Zero))
{
return;
}
System.Windows.Forms.NativeMethods.TV_ITEM tv_item2 = new System.Windows.Forms.NativeMethods.TV_ITEM {
mask = 0x18,
hItem = tv_item.hItem,
stateMask = 0xf000
};
System.Windows.Forms.UnsafeNativeMethods.SendMessage(new HandleRef(null, base.Handle), System.Windows.Forms.NativeMethods.TVM_GETITEM, 0, ref tv_item2);
this.NodeFromHandle(tv_item.hItem).CheckedStateInternal = (tv_item2.state >> 12) > 1;
}
return;
case 0x204e:
this.WmNotify(ref m);
return;
case 0x317:
this.WmPrint(ref m);
return;
}
base.WndProc(ref m);
}
