HookProc
/// <summary>
/// HookProc -- HookProc
/// </summary>
/// <param name="nCode"></param>
/// <param name="wParam"></param>
/// <param name="lParam"></param>
/// <returns></returns>
public delegate IntPtr HookProc(int nCode, IntPtr wParam, IntPtr lParam);
然后创建一个名为SkinEngine的Component。在SkinEngine的构造函数中添加了自己的一些 操作，对窗体的Hook。代码如下：
1 /// <summary>
2 /// SkinEngine -- Skin All Form,Dialog,Control
3 /// </summary>
4 public partial class SkinEngine : Component
5 {
6 #region Field
7 /// <summary>
8 /// CBTHook -- Hook WH_CBT
9 /// </summary>
10 private static HookProc _cbtHook;
11
12 /// <summary>
13 /// Hook
14 /// </summary>
15 private static IntPtr Hook;
16
17 /// <summary>
18 /// Current SkinEngine
19 /// </summary>
20 internal static SkinEngine Engine;
21
22 /// <summary>
23 /// Skinned handled
24 /// </summary>
25 internal static ArrayList SkinHandleList = new ArrayList();
26 #endregion
27
28 #region Constructor
29 /// <summary>
30 /// Constructor
31 /// </summary>
32 public SkinEngine()
33 {
34 InitializeComponent();
35 // Internal Constructor
36 this.InternalConstructor();
37 }
38
39 /// <summary>
40 /// Constructor With container
41 /// </summary>
42 /// <param name="container"></param>
43 public SkinEngine(IContainer container)
44 {
45 container.Add(this);
46
47 InitializeComponent();
48
49 // Internal Constructor
50 this.InternalConstructor();
51 }
52 #endregion
53
54 #region InternalConstructor
55 /// <summary>
56 /// the Internal Constructor to Create Hook and Get List of all control to skin.
57 /// </summary>
58 private void InternalConstructor()
59 {
60 // IsDesignMode == false
61 if (!IsDesignMode)
62 {
63 // Check Engine
64 if (Engine == null)
65 {
66 // Set Engine
67 Engine = this;
68
69 // Hook Process
70 if (Hook == IntPtr.Zero)
71 {
72 _cbtHook = new HookProc(SkinEngine.FnHookProc);
73 Hook = NativeMethod.SetWindowsHookEx(5, _cbtHook, 0, AppDomain.GetCurrentThreadId ());
74 Application.ApplicationExit += new EventHandler (Application_ApplicationExit);
75 }
76 }
77 }
78 }
79 #endregion
80
81 #region FnHookProc
82 /// <summary>
83 /// FnHookProc
84 /// </summary>
85 /// <param name="nCode"></param>
86 /// <param name="wParam"></param>
87 /// <param name="lParam"></param>
88 /// <returns></returns>
89 private static unsafe IntPtr FnHookProc(int nCode, IntPtr wParam, IntPtr lParam)
90 {
91 if (Engine != null)
92 {
93 switch (nCode)
94 {
95 case 5:
96 // Get Skin Control
97 Control control = Control.FromHandle(wParam);
98 // Control is null it Can be Dialog
99 if (control == null)
100 {
101 StringBuilder builder = new StringBuilder(260);
102 NativeMethod.GetClassName(wParam, builder, 260);
103 // #32770 is Dialog
104 if (builder.Length == 6 && builder.ToString() == "#32770")
105 {
106 // Add to SkinHandleList
107 SkinHandleList.Add (wParam);
108 // Print
109 Debug.WriteLine(builder.ToString());
110 }
111 break;
112 }
113 if (!SkinHandleList.Contains(wParam) && (control is Form))
114 {
115 // Add to SkinHandleList
116 SkinHandleList.Add(wParam);
117 // Print all control's Name
118 Debug.WriteLine(control.Name);
119 }
120 break;
121 default:
122 break;
123 }
124 }
125 return NativeMethod.CallNextHookEx(Hook, nCode, wParam, lParam);
126 }
127 #endregion
128
129 #region Application_ApplicationExit
130 /// <summary>
131 /// Application_ApplicationExit
132 /// </summary>
133 /// <param name="sender"></param>
134 /// <param name="e"></param>
135 private void Application_ApplicationExit(object sender, EventArgs e)
136 {
137 Engine.Dispose(false);
138 }
139 #endregion
140
141 #region Property
142 /// <summary>
143 /// Gets or sets a value indicating whether we are currently in design mode.
144 /// </summary>
145 /// <value>
146 /// <c>true</c> if this we are in design mode; otherwise, <c>false</c>.
147 /// </value>
148 internal static bool IsDesignMode { get; set; }
149 #endregion
150 }这样整个窗体就可以进行Hook，其中NativeMethod.SetWindowsHookEx设置了WM_CBT的消息 ，这个消息用来对 Windows窗体的激活，显示。这样，窗体就会被我们记录下来，现在仅仅是 将记录下来的窗体显示出来，写出了窗体的名称。结果如下：
这篇就暂时写道这里，下一篇将对Form的消息进行Hook并绘制。
