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#rnx #rb none #jira none #ROBOMERGE-OWNER: ryan.durand #ROBOMERGE-AUTHOR: ryan.durand #ROBOMERGE-SOURCE: CL 10869242 in //Fortnite/Release-12.00/... via CL 10869536 #ROBOMERGE-BOT: FORTNITE (Main -> Dev-EngineMerge) (v613-10869866) [CL 10870955 by Ryan Durand in Main branch]
81 lines
2.8 KiB
C#
81 lines
2.8 KiB
C#
// Copyright Epic Games, Inc. All Rights Reserved.
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Windows.Forms;
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using System.Diagnostics;
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using System.Runtime.InteropServices;
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using System.ComponentModel;
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using System.Drawing.Design;
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using System.Collections.Specialized;
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namespace MemoryProfiler2
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{
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/// <summary>
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/// Represents a Windows tree view control, which displays a collection of items in a tree.
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/// This version adds following extensions:
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/// Double buffered rendering
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/// </summary>
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public class TreeViewEx : System.Windows.Forms.TreeView
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{
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protected override void OnHandleCreated( EventArgs e )
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{
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TreeViewWin32.SendMessage( this.Handle, TreeViewWin32.TVM_SETEXTENDEDSTYLE, (IntPtr)TreeViewWin32.TVS_EX_DOUBLEBUFFER, (IntPtr)TreeViewWin32.TVS_EX_DOUBLEBUFFER );
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base.OnHandleCreated( e );
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}
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public void SetCheckBoxImageState(TreeNode InTreeNode, UInt32 InImageStateIndex)
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{
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var TreeViewItem = new TreeViewWin32.TVITEM();
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TreeViewItem.hItem = InTreeNode.Handle;
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TreeViewItem.mask = TreeViewWin32.TVIF_STATE;
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TreeViewItem.stateMask = TreeViewWin32.TVIS_STATEIMAGEMASK;
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TreeViewItem.state = InImageStateIndex << 12; // see INDEXTOSTATEIMAGEMASK
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TreeViewWin32.SendMessage( this.Handle, TreeViewWin32.TVM_SETITEM, IntPtr.Zero, ref TreeViewItem );
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}
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}
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/// <summary> Helper class with native Win32 functions, constants and structures. </summary>
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public class TreeViewWin32
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{
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[StructLayout(LayoutKind.Sequential, Pack = 8, CharSet = CharSet.Auto)]
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public struct TVITEM
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{
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public UInt32 mask;
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public IntPtr hItem;
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public UInt32 state;
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public UInt32 stateMask;
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[MarshalAs(UnmanagedType.LPTStr)]
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public string lpszText;
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public int cchTextMax;
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public int iImage;
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public int iSelectedImage;
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public int cChildren;
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public IntPtr lParam;
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}
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[DllImport( "user32.dll", EntryPoint = "SendMessage" )]
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public static extern IntPtr SendMessage( IntPtr hwnd, UInt32 wMsg, IntPtr wParam, IntPtr lParam );
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[DllImport( "user32.dll", EntryPoint = "SendMessage", CharSet = CharSet.Auto )]
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public static extern IntPtr SendMessage( IntPtr hWnd, UInt32 Msg, IntPtr wParam, ref TVITEM lParam );
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public const UInt32 TV_FIRST = 0x1100;
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/// <summary> Informs the tree-view control to set extended styles. </summary>
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public const UInt32 TVM_SETEXTENDEDSTYLE = TV_FIRST + 44;
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/// <summary> Sets some or all of a tree-view item's attributes. </summary>
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public const UInt32 TVM_SETITEM = TV_FIRST + 63;
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/// <summary> Specifies how the background is erased or filled. </summary>
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public const UInt32 TVS_EX_DOUBLEBUFFER = 0x0004;
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/// <summary> The state and stateMask members are valid. </summary>
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public const UInt32 TVIF_STATE = 0x8;
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/// <summary> Mask for the bits used to specify the item's state image index. </summary>
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public const UInt32 TVIS_STATEIMAGEMASK = 0xF000;
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}
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} |