末日这天写篇博客吧,既然没来,那就纪念一下。
这次谈谈自制控件,也就是自定义控件,先上图,再说
1.扩展OpenFileDialog,在OpenFileDialog中添加各种文件(.txt,.jpg,.excel等等)的预览功能
2.重写ListBox,增加折叠、鼠标背影、分类等功能
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一、扩展OpenFileDialog
许多软件的打开对话框都有预览功能,最常见的就是图片预览,用鼠标选择一个图片文件后,右侧或者下侧就会有该图片的缩略图(photoshop中属于后者)。在winform编程中,有专门的打开文件对话框的类OpenFileDialog,但是他不提供文件预览功能,封装得实在太好。看看它公开那些接口
提到扩展,很多人可能想到继承它就可以扩展它,可惜OpenFileDialog声明为sealed,不允许从他继承。稍微底层一点的,想到可以通过Win32 API来修改它的显示方式,只可惜,如你所见,它根本没提供Handle属性,更别说HandleCreated、HandleDestroyed等事件了。那么怎么样子搞呢?其实答案还是通过Win32 API,只是我们取得它的句柄的方式要复杂一点而且调用API的时机隐晦了一点。
提示:
1.Win32 API操作窗体需要知道窗体的句柄;
2.不熟悉Win32编程的同学可以先上网查查资料,特别是不知道SetParent、SetWindowPos等API是干嘛的,我觉得以下的看不懂。
为什么说取得它的句柄复杂了一点?难道不是用“FindWindow”、“FindWindowEx”、“ EnumChildWindows”等获取OpenFileDialog的句柄,再用“SetParent”、“SetWindowPos”等API将.net控件(本例中是DataGridView控件,当然可以使其他任何一种)添加到OpenFileDialog中去?没错,以上列举出来的API都是基本要用到的,“只是用在什么地方、什么时候用”是个比较麻烦的问题,原因如下:
1)我们知道OpenfileDialog显示的是模式对话框,也就是说,一旦它ShowDialog(),它以下的代码是不会再执行的,具体原因是什么(我以后的博客会专门讲为什么),你现在可以理解为OpenFileDialog()方法会阻塞调用线程,既然阻塞了调用线程,那么我们再无法控制程序了(直到它返回),根本谈不上再调用API获取OpenFileDialog的句柄然后去操作它。如果有人会说,“我可以另开辟线程去取OpenFileDialog得句柄再操作它”,恩,我不否定这个方法,只是我想说,如果你真的按照这个方法去试,那么肯定会陷入泥潭。因为你不仅要取它的句柄,你还要监视OpenFIleDialog的一举一动,移动、缩放、用户鼠标点击选择文件、更改目录等,然后再操作.net控件(本例中是DataGridView控件,下同),让.net控件去适应OpenFileDialog的大小等等,你会发现你忙死了,甚至有的你根本监视不了,比如用户点击选择文件、更改目录。
2)就算我们能够在OpenFIleDialog显示之后,取得它的句柄,那么什么时候再调用其他API呢?比如什么时候调用SetWindowPos,让.net控件适应OpenFileDialog的大小变化?什么时候知道用户选择文件发生了变化?
所以,API方法什么时候用?用在什么地方?就是接下来要讨论的东西。
我不知道各位在使用各种框架的时候,对“框架”的理解到什么程度,我觉得可以总结成一句话“跟个2b似地注册一些事件,然后苦逼地去写好每一个回调方法,我们却不知道为啥要这样写”,不是么?既然这样,那么我们的API方法只要写在了正确的回调方法中,我们就能到达想要的目的了。考虑几个问题:
1)OpenFileDialog显示,我们向其中添加.net控件。我们什么时候知道它显示?
2)OpenFileDialog大小发生变化时,我们要更新.net控件以适应新的大小。我们什么时候知道OpenFileDialog的大小发生了变化?
3)OpenFileDialog中用户选择的文件发生了变化,我们需要知道新选择的文件路径,用来显示在.net控件中。我们怎么知道选择了什么文件?(这里选择文件指用户用鼠标在OpenFileDialog中单击选取,不是点击“确定”后。)
以上所有的问题,其实在一个地方都可以知道,那就是监听OpenFileDialog窗体的Windows消息,因为一个窗体的任何一个动作都伴随着一系列的Windows消息(这个可以用Spy++查看)。既然这样,那么我们可以在窗体处理Windows消息的回调方法中调用API方法了,也就是窗体的Control.WndProc方法中。之前已经说过了,OpenFileDialog声明为Sealed,提供的接口少之又少,我们几乎根本不可能接触到OpenFileDialog的WndProc,更谈不上监听Windows消息,然后调用API去操作它。这时候,NativeWindow该出场了,先来引用一下MSDN上对NativeWindow的解释:
“提供窗口句柄和窗口过程的低级封装。”
说了像没说一样,其实就是说,将一个窗口句柄与NativeWindow对象绑定后,该NativeWindow对象就能接收到这个窗体的所有消息。说到Windows消息,我想说一下Windows桌面应用程序的运行流程,其实如果看了我前一篇博客的同学应该有些了解,.Net Winform开发笔记(二)中基本提到了一些。为了配合本次讲解,我再次画了一张图
上图中,虚线框可以看做是一个.net中的Control类对象(或者其派生类,下同,控件即窗体、窗体即控件),正常情况下,Winform程序会按照1->2->3的步骤运行,当我们将Control类对象的Handle(就是我们常说的窗口句柄,做了一下封装)与一个NativeWIndow对象绑定后,程序不再按照1->2->3这样的顺序运行了,他会按照1->2-1->2-2->3这样运行,也就是说,NativeWindow对象可以拦截Control类对象的WIndows消息,我们完全可以在NativeWIndow中重写他的WndProc方法,像处理自己的Windows消息一样去处理Control类对象的消息。所以,我们就可以在NativeWindow对象的WndProc中调用我们的API方法。
接下来,上代码(代码只提供大概思路)
1.扩展对话框
1 public class MultiOpenFileDialog 2 { 3 #region fields 4 private const SetWindowPosFlags UFLAGSHIDE = 5 SetWindowPosFlags.SWP_NOACTIVATE | 6 SetWindowPosFlags.SWP_NOOWNERZORDER | 7 SetWindowPosFlags.SWP_NOMOVE | 8 SetWindowPosFlags.SWP_NOSIZE | 9 SetWindowPosFlags.SWP_HIDEWINDOW; 10 #endregion 11 public string FileName; 12 #region public methods 13 public DialogResult ShowDialog() 14 { 15 return ShowDialog(null); 16 } 17 public DialogResult ShowDialog(IWin32Window owner) 18 { 19 using (OpenFileDialog open = new OpenFileDialog()) 20 { 21 MedianForm median = new MedianForm(open); 22 median.Show(owner); 23 Win32.SetWindowPos(median.Handle, IntPtr.Zero, 0, 0, 0, 0, UFLAGSHIDE); //隐藏中间窗体 24 DialogResult dialogresult = open.ShowDialog(median); //将median作为openfileDialog的owner 25 median.Close(); 26 if (dialogresult == DialogResult.OK) 27 { 28 FileName = open.FileName; 29 } 30 return dialogresult; 31 } 32 } 33 #endregion 34 }
2.监听Dialog的NativeWindow
1 class DialogNativeWindow : NativeWindow,IDisposable 2 { 3 IntPtr handle; //待扩展OpenFileDialog的句柄 4 OpenFileDialog openfiledialog; //待扩展OpenFileDialog 5 DataGridView addControl; //向窗体中添加新的控件 6 ChildControlNativeWindow childNative; 7 bool init = false; 8 9 public DialogNativeWindow(IntPtr handle, OpenFileDialog openfiledialog) 10 { 11 this.handle = handle; 12 this.openfiledialog = openfiledialog; 13 AssignHandle(handle); 14 15 //设置控件信息 16 addControl = new DataGridView(); 17 addControl.Width = 600; 18 addControl.Height = 200; 19 addControl.DataSource = null; 20 } 21 22 #region override methods 23 protected override void WndProc(ref Message m) 24 { 25 switch (m.Msg) 26 { 27 case (int)Msg.WM_SHOWWINDOW: //窗体显示 28 { 29 NativeChild(); 30 AddControl(); 31 break; 32 } 33 case (int)Msg.WM_SIZING: //窗体大小改变 34 { 35 UpdateSize(); 36 break; 37 } 38 case (int)Msg.WM_WINDOWPOSCHANGING: //窗体位置变化 39 { 40 UpdateLocation(m); 41 break; 42 } 43 } 44 base.WndProc(ref m); 45 } 46 #endregion 47 48 #region event handlers 49 void childNative_SelectPathChanged(StringBuilder path) 50 { 51 //处理选择目录变化事件 52 //... 53 } 54 55 void childNative_SelectFileChanged(StringBuilder file) 56 { 57 //处理选择文件变化事件 58 //如果是xls文件,将其显示在datagridview控件中 59 string str = file.ToString(); 60 if (str.ToLower().EndsWith(".xls")) 61 { 62 OledbManager manager = new OledbManager(); 63 if (manager.Connect("Provider=Microsoft.Jet.OLEDB.4.0; Data Source=\'" + str + "\'; Extended Properties='Excel 8.0;'")) 64 { 65 DataTable tb = manager.SearchTable(); 66 if (tb != null) 67 { 68 addControl.Rows.Clear(); 69 addControl.Columns.Clear(); 70 foreach (DataColumn col in tb.Columns) 71 { 72 addControl.Columns.Add(col.ColumnName, col.Caption); 73 } 74 foreach (DataRow row in tb.Rows) 75 { 76 object[] objs = new object[tb.Columns.Count]; 77 for (int i = 0; i < tb.Columns.Count; ++i) 78 { 79 objs[i] = row[i]; 80 } 81 addControl.Rows.Add(objs); 82 } 83 } 84 } 85 } 86 else 87 { 88 addControl.Rows.Clear(); 89 addControl.Columns.Clear(); 90 } 91 } 92 #endregion 93 94 #region private methods 95 private void NativeChild() 96 { 97 //查找openfileDialog中的子控件 98 Win32.EnumChildWindows(handle, new Win32.EnumWindowsCallBack(WindowCallBack), 0); 99 } 100 private void AddControl() 101 { 102 //添加控件到OpenFileDialog界面 103 Win32.SetParent(addControl.Handle, handle); 104 RECT currentSize = new RECT(); 105 Win32.GetClientRect(handle, ref currentSize); 106 addControl.Height = (int)currentSize.Height; 107 addControl.Location = new Point((int)(currentSize.Width - addControl.Width), 0); 108 109 init = true; 110 } 111 private void UpdateLocation(Message m) 112 { 113 if (!init) //只初始化openfileDialog的大小一次 114 { 115 WINDOWPOS pos = (WINDOWPOS)Marshal.PtrToStructure(m.LParam, typeof(WINDOWPOS)); 116 if (pos.flags != 0 && ((pos.flags & (int)SWP_Flags.SWP_NOSIZE) != (int)SWP_Flags.SWP_NOSIZE)) 117 { 118 pos.cx += addControl.Width; //修改OpenfileDialog的宽度 119 Marshal.StructureToPtr(pos, m.LParam, true); 120 121 RECT currentSize = new RECT(); 122 Win32.GetClientRect(handle, ref currentSize); 123 addControl.Height = (int)currentSize.Height; 124 } 125 } 126 } 127 private void UpdateSize() 128 { 129 RECT currentSize = new RECT(); 130 Win32.GetClientRect(handle, ref currentSize); 131 Win32.SetWindowPos(addControl.Handle, (IntPtr)ZOrderPos.HWND_BOTTOM, 0, 0, (int)addControl.Width, (int)currentSize.Height, UFLAGSSIZEEX); //新添加的控件与openfileDialog大小一致 132 } 133 private bool WindowCallBack(IntPtr handle, int lparam) 134 { 135 StringBuilder wndClass = new StringBuilder(256); 136 Win32.GetClassName(handle, wndClass, wndClass.Capacity);//获取控件类名 137 138 if (wndClass.ToString().StartsWith("#32770")) //找到目标控件 139 { 140 childNative = new ChildControlNativeWindow(handle); 141 childNative.SelectFileChanged += new ChildControlNativeWindow.SelectFileChangedEventHandler(childNative_SelectFileChanged); 142 childNative.SelectPathChanged += new ChildControlNativeWindow.SelectPathChangedEventHandler(childNative_SelectPathChanged); 143 return true; 144 } 145 return true; 146 } 147 #endregion 148 149 #region enums 150 private const SetWindowPosFlags UFLAGSSIZEEX = 151 SetWindowPosFlags.SWP_NOACTIVATE | 152 SetWindowPosFlags.SWP_NOOWNERZORDER | 153 SetWindowPosFlags.SWP_NOMOVE | 154 SetWindowPosFlags.SWP_ASYNCWINDOWPOS | 155 SetWindowPosFlags.SWP_DEFERERASE; 156 private const SetWindowPosFlags UFLAGSSIZE = 157 SetWindowPosFlags.SWP_NOACTIVATE | 158 SetWindowPosFlags.SWP_NOOWNERZORDER | 159 SetWindowPosFlags.SWP_NOMOVE; 160 private const SetWindowPosFlags UFLAGSHIDE = 161 SetWindowPosFlags.SWP_NOACTIVATE | 162 SetWindowPosFlags.SWP_NOOWNERZORDER | 163 SetWindowPosFlags.SWP_NOMOVE | 164 SetWindowPosFlags.SWP_NOSIZE | 165 SetWindowPosFlags.SWP_HIDEWINDOW; 166 #endregion 167 168 #region IDisposable 成员 169 170 public void Dispose() 171 { 172 ReleaseHandle(); //释放与openfileDialog的句柄关联 173 if (childNative != null) 174 { 175 childNative.SelectFileChanged -= new ChildControlNativeWindow.SelectFileChangedEventHandler(childNative_SelectFileChanged); 176 childNative.SelectPathChanged -= new ChildControlNativeWindow.SelectPathChangedEventHandler(childNative_SelectPathChanged); 177 childNative.Dispose(); 178 } 179 180 } 181 182 #endregion 183 }
3.监听子控件的NativeWindow
1 class ChildControlNativeWindow : NativeWindow,IDisposable 2 { 3 IntPtr handle; //需要被监听消息的子控件句柄 4 public ChildControlNativeWindow(IntPtr handle) 5 { 6 this.handle = handle; 7 AssignHandle(handle); 8 } 9 10 #region override methods 11 protected override void WndProc(ref Message m) 12 { 13 switch (m.Msg) 14 { 15 case (int)Msg.WM_NOTIFY: 16 OFNOTIFY ofNotify = (OFNOTIFY)Marshal.PtrToStructure(m.LParam, typeof(OFNOTIFY)); 17 if (ofNotify.hdr.code == (uint)DialogChangeStatus.CDN_SELCHANGE) //openfileDialog选择文件发生变化 18 { 19 StringBuilder file = new StringBuilder(256); 20 Win32.SendMessage(Win32.GetParent(handle), (int)DialogChangeProperties.CDM_GETFILEPATH, (int)256, file); 21 if (SelectFileChanged != null) 22 SelectFileChanged(file); //通知注册者 23 } 24 else if (ofNotify.hdr.code == (uint)DialogChangeStatus.CDN_FOLDERCHANGE) //openfileDialog选择目录发生变化 25 { 26 StringBuilder path = new StringBuilder(256); 27 Win32.SendMessage(Win32.GetParent(handle), (int)DialogChangeProperties.CDM_GETFOLDERPATH, (int)256, path); 28 if (SelectPathChanged != null) 29 SelectPathChanged(path); //通知注册者 30 } 31 break; 32 } 33 base.WndProc(ref m); 34 } 35 #endregion 36 37 #region delegate 38 public delegate void SelectFileChangedEventHandler(StringBuilder file); 39 public delegate void SelectPathChangedEventHandler(StringBuilder path); 40 #endregion 41 42 #region events 43 public event SelectFileChangedEventHandler SelectFileChanged; //当openfileDialog的选择文件发生变化时发生 44 public event SelectPathChangedEventHandler SelectPathChanged; //当openfileDialog的选择目录发生变化时发生 45 #endregion 46 47 #region IDisposable 成员 48 49 public void Dispose() 50 { 51 ReleaseHandle(); //终止与子控件句柄的关联 52 } 53 54 #endregion 55 }
4.中间过渡窗体,用来获取OpenFileDialog的句柄
1 class MedianForm : Form 2 { 3 OpenFileDialog open = null; 4 DialogNativeWindow dialognative; 5 6 public MedianForm(OpenFileDialog open) 7 { 8 this.open = open; 9 StartPosition = FormStartPosition.Manual; 10 Location = new System.Drawing.Point(-1000, -1000); //避免界面闪烁 11 } 12 protected override void OnClosing(System.ComponentModel.CancelEventArgs e) 13 { 14 if (dialognative != null) 15 { 16 dialognative.Dispose(); //释放资源 17 } 18 base.OnClosing(e); 19 } 20 protected override void WndProc(ref Message m) 21 { 22 if (m.Msg == (int) Msg.WM_ACTIVATE) 23 { 24 dialognative = new DialogNativeWindow(m.LParam, open); //m.LParam为要打开的窗口句柄,开始监听OpenFileDialog的Windows消息 25 } 26 base.WndProc(ref m); 27 } 28 }
5.访问Excel文件的类
1 class OledbManager 2 { 3 OleDbConnection conn; 4 /// <summary> 5 /// 连接excel文件 6 /// </summary> 7 /// <param name="connstr"></param> 8 /// <returns></returns> 9 public bool Connect(string connstr) 10 { 11 try 12 { 13 conn = new OleDbConnection(connstr); 14 conn.Open(); 15 return true; 16 } 17 catch 18 { 19 return false; 20 } 21 } 22 /// <summary> 23 /// 查找第一张表中的数据 24 /// </summary> 25 /// <returns></returns> 26 public DataTable SearchTable() 27 { 28 try 29 { 30 DataTable tb = new DataTable(); 31 string sql = "select * from [Sheet1$]"; 32 OleDbCommand com = new OleDbCommand(sql, conn); 33 OleDbDataAdapter adp = new OleDbDataAdapter(com); 34 adp.Fill(tb); 35 return tb; 36 } 37 catch 38 { 39 return null; 40 } 41 } 42 }
6.几个Win32结构体、枚举类型以及API声明(本代码参考CodeProject上的一篇文章)
1 public static class Win32 2 { 3 #region Delegates 4 public delegate bool EnumWindowsCallBack(IntPtr hWnd, int lParam); 5 #endregion 6 7 #region USER32 8 [DllImport("user32.dll", CharSet = CharSet.Auto)] 9 public static extern IntPtr GetParent(IntPtr hWnd); 10 [DllImport("User32.Dll")] 11 public static extern int GetDlgCtrlID(IntPtr hWndCtl); 12 [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)] 13 public static extern int MapWindowPoints(IntPtr hWnd, IntPtr hWndTo, ref POINT pt, int cPoints); 14 [DllImport("user32.dll", SetLastError = true)] 15 public static extern bool GetWindowInfo(IntPtr hwnd, out WINDOWINFO pwi); 16 [DllImport("User32.Dll")] 17 public static extern void GetWindowText(IntPtr hWnd, StringBuilder param, int length); 18 [DllImport("User32.Dll")] 19 public static extern void GetClassName(IntPtr hWnd, StringBuilder param, int length); 20 [DllImport("user32.Dll")] 21 public static extern bool EnumChildWindows(IntPtr hWndParent, EnumWindowsCallBack lpEnumFunc, int lParam); 22 [DllImport("user32.Dll")] 23 public static extern bool EnumWindows(EnumWindowsCallBack lpEnumFunc, int lParam); 24 [DllImport("User32.dll", CharSet = CharSet.Auto)] 25 public static extern bool ReleaseCapture(); 26 [DllImport("user32.dll", CharSet = CharSet.Auto)] 27 public static extern IntPtr SetCapture(IntPtr hWnd); 28 [DllImport("user32.dll", CharSet = CharSet.Auto)] 29 public static extern IntPtr ChildWindowFromPointEx(IntPtr hParent, POINT pt, ChildFromPointFlags flags); 30 [DllImport("user32.dll", EntryPoint = "FindWindowExA", CallingConvention = CallingConvention.StdCall, CharSet = CharSet.Ansi)] 31 public static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow); 32 [DllImport("user32.dll")] 33 public static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent); 34 [DllImport("user32.dll", CharSet = CharSet.Auto)] 35 public static extern int PostMessage(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam); 36 [DllImport("user32.dll", CharSet = CharSet.Auto)] 37 public static extern int PostMessage(IntPtr hWnd, int msg, int wParam, int lParam); 38 [DllImport("user32.dll", CharSet = CharSet.Auto)] 39 public static extern int SendMessage(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam); 40 [DllImport("user32.dll", CharSet = CharSet.Auto)] 41 public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, int lParam); 42 [DllImport("user32.dll", CharSet = CharSet.Auto)] 43 public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, StringBuilder param); 44 [DllImport("user32.dll", CharSet = CharSet.Auto)] 45 public static extern int SendMessage(IntPtr hWnd, int msg, int wParam, char[] chars); 46 [DllImport("user32.dll", CharSet = CharSet.Auto)] 47 public static extern IntPtr BeginDeferWindowPos(int nNumWindows); 48 [DllImport("user32.dll", CharSet = CharSet.Auto)] 49 public static extern IntPtr DeferWindowPos(IntPtr hWinPosInfo, IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int Width, int Height, SetWindowPosFlags flags); 50 [DllImport("user32.dll", CharSet = CharSet.Auto)] 51 public static extern bool EndDeferWindowPos(IntPtr hWinPosInfo); 52 [DllImport("user32.dll", CharSet = CharSet.Auto)] 53 public static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int Width, int Height, SetWindowPosFlags flags); 54 [DllImport("user32.dll")] 55 public static extern bool GetWindowRect(IntPtr hwnd, ref RECT rect); 56 [DllImport("user32.dll")] 57 public static extern bool GetClientRect(IntPtr hwnd, ref RECT rect); 58 #endregion 59 } 60 61 #region SWP_Flags 62 [Flags] 63 public enum SWP_Flags 64 { 65 SWP_NOSIZE = 0x0001, 66 SWP_NOMOVE = 0x0002, 67 SWP_NOZORDER = 0x0004, 68 SWP_NOACTIVATE = 0x0010, 69 SWP_FRAMECHANGED = 0x0020, /* The frame changed: send WM_NCCALCSIZE */ 70 SWP_SHOWWINDOW = 0x0040, 71 SWP_HIDEWINDOW = 0x0080, 72 SWP_NOOWNERZORDER = 0x0200, /* Don't do owner Z ordering */ 73 74 SWP_DRAWFRAME = SWP_FRAMECHANGED, 75 SWP_NOREPOSITION = SWP_NOOWNERZORDER 76 } 77 #endregion 78 79 #region DialogChangeStatus 80 public enum DialogChangeStatus : long 81 { 82 CDN_FIRST = 0xFFFFFDA7, 83 CDN_INITDONE = (CDN_FIRST - 0x0000), 84 CDN_SELCHANGE = (CDN_FIRST - 0x0001), 85 CDN_FOLDERCHANGE = (CDN_FIRST - 0x0002), 86 CDN_SHAREVIOLATION = (CDN_FIRST - 0x0003), 87 CDN_HELP = (CDN_FIRST - 0x0004), 88 CDN_FILEOK = (CDN_FIRST - 0x0005), 89 CDN_TYPECHANGE = (CDN_FIRST - 0x0006), 90 } 91 #endregion 92 93 #region DialogChangeProperties 94 public enum DialogChangeProperties 95 { 96 CDM_FIRST = (0x400 + 100), 97 CDM_GETSPEC = (CDM_FIRST + 0x0000), 98 CDM_GETFILEPATH = (CDM_FIRST + 0x0001), 99 CDM_GETFOLDERPATH = (CDM_FIRST + 0x0002), 100 CDM_GETFOLDERIDLIST = (CDM_FIRST + 0x0003), 101 CDM_SETCONTROLTEXT = (CDM_FIRST + 0x0004), 102 CDM_HIDECONTROL = (CDM_FIRST + 0x0005), 103 CDM_SETDEFEXT = (CDM_FIRST + 0x0006) 104 } 105 #endregion 106 107 #region ImeNotify 108 public enum ImeNotify 109 { 110 IMN_CLOSESTATUSWINDOW = 0x0001, 111 IMN_OPENSTATUSWINDOW = 0x0002, 112 IMN_CHANGECANDIDATE = 0x0003, 113 IMN_CLOSECANDIDATE = 0x0004, 114 IMN_OPENCANDIDATE = 0x0005, 115 IMN_SETCONVERSIONMODE = 0x0006, 116 IMN_SETSENTENCEMODE = 0x0007, 117 IMN_SETOPENSTATUS = 0x0008, 118 IMN_SETCANDIDATEPOS = 0x0009, 119 IMN_SETCOMPOSITIONFONT = 0x000A, 120 IMN_SETCOMPOSITIONWINDOW = 0x000B, 121 IMN_SETSTATUSWINDOWPOS = 0x000C, 122 IMN_GUIDELINE = 0x000D, 123 IMN_PRIVATE = 0x000E 124 } 125 #endregion 126 127 #region FolderViewMode 128 public enum FolderViewMode 129 { 130 Default = 0x7028, 131 Icon = Default + 1, 132 SmallIcon = Default + 2, 133 List = Default + 3, 134 Details = Default + 4, 135 Thumbnails = Default + 5, 136 Title = Default + 6, 137 Thumbstrip = Default + 7, 138 } 139 #endregion 140 141 #region Enum DialogViewProperty 142 public enum DefaultViewType 143 { 144 Icons = 0x7029, 145 List = 0x702b, 146 Details = 0x702c, 147 Thumbnails = 0x702d, 148 Tiles = 0x702e, 149 } 150 #endregion 151 152 #region ButtonStyle 153 public enum ButtonStyle : long 154 { 155 BS_PUSHBUTTON = 0x00000000, 156 BS_DEFPUSHBUTTON = 0x00000001, 157 BS_CHECKBOX = 0x00000002, 158 BS_AUTOCHECKBOX = 0x00000003, 159 BS_RADIOBUTTON = 0x00000004, 160 BS_3STATE = 0x00000005, 161 BS_AUTO3STATE = 0x00000006, 162 BS_GROUPBOX = 0x00000007, 163 BS_USERBUTTON = 0x00000008, 164 BS_AUTORADIOBUTTON = 0x00000009, 165 BS_PUSHBOX = 0x0000000A, 166 BS_OWNERDRAW = 0x0000000B, 167 BS_TYPEMASK = 0x0000000F, 168 BS_LEFTTEXT = 0x00000020, 169 BS_TEXT = 0x00000000, 170 BS_ICON = 0x00000040, 171 BS_BITMAP = 0x00000080, 172 BS_LEFT = 0x00000100, 173 BS_RIGHT = 0x00000200, 174 BS_CENTER = 0x00000300, 175 BS_TOP = 0x00000400, 176 BS_BOTTOM = 0x00000800, 177 BS_VCENTER = 0x00000C00, 178 BS_PUSHLIKE = 0x00001000, 179 BS_MULTILINE = 0x00002000, 180 BS_NOTIFY = 0x00004000, 181 BS_FLAT = 0x00008000, 182 BS_RIGHTBUTTON = BS_LEFTTEXT 183 } 184 #endregion 185 186 #region ZOrderPos 187 public enum ZOrderPos 188 { 189 HWND_TOP = 0, 190 HWND_BOTTOM = 1, 191 HWND_TOPMOST = -1, 192 HWND_NOTOPMOST = -2 193 } 194 #endregion 195 196 #region Static Control Styles 197 public enum StaticControlStyles : long 198 { 199 SS_LEFT = 0x00000000, 200 SS_CENTER = 0x00000001, 201 SS_RIGHT = 0x00000002, 202 SS_ICON = 0x00000003, 203 SS_BLACKRECT = 0x00000004, 204 SS_GRAYRECT = 0x00000005, 205 SS_WHITERECT = 0x00000006, 206 SS_BLACKFRAME = 0x00000007, 207 SS_GRAYFRAME = 0x00000008, 208 SS_WHITEFRAME = 0x00000009, 209 SS_USERITEM = 0x0000000A, 210 SS_SIMPLE = 0x0000000B, 211 SS_LEFTNOWORDWRAP = 0x0000000C, 212 SS_OWNERDRAW = 0x0000000D, 213 SS_BITMAP = 0x0000000E, 214 SS_ENHMETAFILE = 0x0000000F, 215 SS_ETCHEDHORZ = 0x00000010, 216 SS_ETCHEDVERT = 0x00000011, 217 SS_ETCHEDFRAME = 0x00000012, 218 SS_TYPEMASK = 0x0000001F, 219 SS_REALSIZECONTROL = 0x00000040, 220 SS_NOPREFIX = 0x00000080, /* Don't do "&" character translation */ 221 SS_NOTIFY = 0x00000100, 222 SS_CENTERIMAGE = 0x00000200, 223 SS_RIGHTJUST = 0x00000400, 224 SS_REALSIZEIMAGE = 0x00000800, 225 SS_SUNKEN = 0x00001000, 226 SS_EDITCONTROL = 0x00002000, 227 SS_ENDELLIPSIS = 0x00004000, 228 SS_PATHELLIPSIS = 0x00008000, 229 SS_WORDELLIPSIS = 0x0000C000, 230 SS_ELLIPSISMASK = 0x0000C000 231 } 232 #endregion 233 234 #region Combo Box styles 235 public enum ComboBoxStyles : long 236 { 237 CBS_SIMPLE = 0x0001, 238 CBS_DROPDOWN = 0x0002, 239 CBS_DROPDOWNLIST = 0x0003, 240 CBS_OWNERDRAWFIXED = 0x0010, 241 CBS_OWNERDRAWVARIABLE = 0x0020, 242 CBS_AUTOHSCROLL = 0x0040, 243 CBS_OEMCONVERT = 0x0080, 244 CBS_SORT = 0x0100, 245 CBS_HASSTRINGS = 0x0200, 246 CBS_NOINTEGRALHEIGHT = 0x0400, 247 CBS_DISABLENOSCROLL = 0x0800, 248 CBS_UPPERCASE = 0x2000, 249 CBS_LOWERCASE = 0x4000 250 } 251 #endregion 252 253 #region Window Styles 254 public enum WindowStyles : long 255 { 256 WS_OVERLAPPED = 0x00000000, 257 WS_POPUP = 0x80000000, 258 WS_CHILD = 0x40000000, 259 WS_MINIMIZE = 0x20000000, 260 WS_VISIBLE = 0x10000000, 261 WS_DISABLED = 0x08000000, 262 WS_CLIPSIBLINGS = 0x04000000, 263 WS_CLIPCHILDREN = 0x02000000, 264 WS_MAXIMIZE = 0x01000000, 265 WS_CAPTION = 0x00C00000, 266 WS_BORDER = 0x00800000, 267 WS_DLGFRAME = 0x00400000, 268 WS_VSCROLL = 0x00200000, 269 WS_HSCROLL = 0x00100000, 270 WS_SYSMENU = 0x00080000, 271 WS_THICKFRAME = 0x00040000, 272 WS_GROUP = 0x00020000, 273 WS_TABSTOP = 0x00010000, 274 WS_MINIMIZEBOX = 0x00020000, 275 WS_MAXIMIZEBOX = 0x00010000, 276 WS_TILED = 0x00000000, 277 WS_ICONIC = 0x20000000, 278 WS_SIZEBOX = 0x00040000, 279 WS_POPUPWINDOW = 0x80880000, 280 WS_OVERLAPPEDWINDOW = 0x00CF0000, 281 WS_TILEDWINDOW = 0x00CF0000, 282 WS_CHILDWINDOW = 0x40000000 283 } 284 #endregion 285 286 #region Window Extended Styles 287 public enum WindowExStyles 288 { 289 WS_EX_DLGMODALFRAME = 0x00000001, 290 WS_EX_NOPARENTNOTIFY = 0x00000004, 291 WS_EX_TOPMOST = 0x00000008, 292 WS_EX_ACCEPTFILES = 0x00000010, 293 WS_EX_TRANSPARENT = 0x00000020, 294 WS_EX_MDICHILD = 0x00000040, 295 WS_EX_TOOLWINDOW = 0x00000080, 296 WS_EX_WINDOWEDGE = 0x00000100, 297 WS_EX_CLIENTEDGE = 0x00000200, 298 WS_EX_CONTEXTHELP = 0x00000400, 299 WS_EX_RIGHT = 0x00001000, 300 WS_EX_LEFT = 0x00000000, 301 WS_EX_RTLREADING = 0x00002000, 302 WS_EX_LTRREADING = 0x00000000, 303 WS_EX_LEFTSCROLLBAR = 0x00004000, 304 WS_EX_RIGHTSCROLLBAR = 0x00000000, 305 WS_EX_CONTROLPARENT = 0x00010000, 306 WS_EX_STATICEDGE = 0x00020000, 307 WS_EX_APPWINDOW = 0x00040000, 308 WS_EX_OVERLAPPEDWINDOW = 0x00000300, 309 WS_EX_PALETTEWINDOW = 0x00000188, 310 WS_EX_LAYERED = 0x00080000 311 } 312 #endregion 313 314 #region ChildFromPointFlags 315 public enum ChildFromPointFlags 316 { 317 CWP_ALL = 0x0000, 318 CWP_SKIPINVISIBLE = 0x0001, 319 CWP_SKIPDISABLED = 0x0002, 320 CWP_SKIPTRANSPARENT = 0x0004 321 } 322 #endregion 323 324 #region HitTest 325 public enum HitTest 326 { 327 HTERROR = (-2), 328 HTTRANSPARENT = (-1), 329 HTNOWHERE = 0, 330 HTCLIENT = 1, 331 HTCAPTION = 2, 332 HTSYSMENU = 3, 333 HTGROWBOX = 4, 334 HTSIZE = HTGROWBOX, 335 HTMENU = 5, 336 HTHSCROLL = 6, 337 HTVSCROLL = 7, 338 HTMINBUTTON = 8, 339 HTMAXBUTTON = 9, 340 HTLEFT = 10, 341 HTRIGHT = 11, 342 HTTOP = 12, 343 HTTOPLEFT = 13, 344 HTTOPRIGHT = 14, 345 HTBOTTOM = 15, 346 HTBOTTOMLEFT = 16, 347 HTBOTTOMRIGHT = 17, 348 HTBORDER = 18, 349 HTREDUCE = HTMINBUTTON, 350 HTZOOM = HTMAXBUTTON, 351 HTSIZEFIRST = HTLEFT, 352 HTSIZELAST = HTBOTTOMRIGHT, 353 HTOBJECT = 19, 354 HTCLOSE = 20, 355 HTHELP = 21 356 } 357 #endregion 358 359 #region Windows Messages 360 public enum Msg 361 { 362 WM_NULL = 0x0000, 363 WM_CREATE = 0x0001, 364 WM_DESTROY = 0x0002, 365 WM_MOVE = 0x0003, 366 WM_SIZE = 0x0005, 367 WM_ACTIVATE = 0x0006, 368 WM_SETFOCUS = 0x0007, 369 WM_KILLFOCUS = 0x0008, 370 WM_ENABLE = 0x000A, 371 WM_SETREDRAW = 0x000B, 372 WM_SETTEXT = 0x000C, 373 WM_GETTEXT = 0x000D, 374 WM_GETTEXTLENGTH = 0x000E, 375 WM_PAINT = 0x000F, 376 WM_CLOSE = 0x0010, 377 WM_QUERYENDSESSION = 0x0011, 378 WM_QUIT = 0x0012, 379 WM_QUERYOPEN = 0x0013, 380 WM_ERASEBKGND = 0x0014, 381 WM_SYSCOLORCHANGE = 0x0015, 382 WM_ENDSESSION = 0x0016, 383 WM_SHOWWINDOW = 0x0018, 384 WM_CTLCOLOR = 0x0019, 385 WM_WININICHANGE = 0x001A, 386 WM_SETTINGCHANGE = 0x001A, 387 WM_DEVMODECHANGE = 0x001B, 388 WM_ACTIVATEAPP = 0x001C, 389 WM_FONTCHANGE = 0x001D, 390 WM_TIMECHANGE = 0x001E, 391 WM_CANCELMODE = 0x001F, 392 WM_SETCURSOR = 0x0020, 393 WM_MOUSEACTIVATE = 0x0021, 394 WM_CHILDACTIVATE = 0x0022, 395 WM_QUEUESYNC = 0x0023, 396 WM_GETMINMAXINFO = 0x0024, 397 WM_PAINTICON = 0x0026, 398 WM_ICONERASEBKGND = 0x0027, 399 WM_NEXTDLGCTL = 0x0028, 400 WM_SPOOLERSTATUS = 0x002A, 401 WM_DRAWITEM = 0x002B, 402 WM_MEASUREITEM = 0x002C, 403 WM_DELETEITEM = 0x002D, 404 WM_VKEYTOITEM = 0x002E, 405 WM_CHARTOITEM = 0x002F, 406 WM_SETFONT = 0x0030, 407 WM_GETFONT = 0x0031, 408 WM_SETHOTKEY = 0x0032, 409 WM_GETHOTKEY = 0x0033, 410 WM_QUERYDRAGICON = 0x0037, 411 WM_COMPAREITEM = 0x0039, 412 WM_GETOBJECT = 0x003D, 413 WM_COMPACTING = 0x0041, 414 WM_COMMNOTIFY = 0x0044, 415 WM_WINDOWPOSCHANGING = 0x0046, 416 WM_WINDOWPOSCHANGED = 0x0047, 417 WM_POWER = 0x0048, 418 WM_COPYDATA = 0x004A, 419 WM_CANCELJOURNAL = 0x004B, 420 WM_NOTIFY = 0x004E, 421 WM_INPUTLANGCHANGEREQUEST = 0x0050, 422 WM_INPUTLANGCHANGE = 0x0051, 423 WM_TCARD = 0x0052, 424 WM_HELP = 0x0053, 425 WM_USERCHANGED = 0x0054, 426 WM_NOTIFYFORMAT = 0x0055, 427 WM_CONTEXTMENU = 0x007B, 428 WM_STYLECHANGING = 0x007C, 429 WM_STYLECHANGED = 0x007D, 430 WM_DISPLAYCHANGE = 0x007E, 431 WM_GETICON = 0x007F, 432 WM_SETICON = 0x0080, 433 WM_NCCREATE = 0x0081, 434 WM_NCDESTROY = 0x0082, 435 WM_NCCALCSIZE = 0x0083, 436 WM_NCHITTEST = 0x0084, 437 WM_NCPAINT = 0x0085, 438 WM_NCACTIVATE = 0x0086, 439 WM_GETDLGCODE = 0x0087, 440 WM_SYNCPAINT = 0x0088, 441 WM_NCMOUSEMOVE = 0x00A0, 442 WM_NCLBUTTONDOWN = 0x00A1, 443 WM_NCLBUTTONUP = 0x00A2, 444 WM_NCLBUTTONDBLCLK = 0x00A3, 445 WM_NCRBUTTONDOWN = 0x00A4, 446 WM_NCRBUTTONUP = 0x00A5, 447 WM_NCRBUTTONDBLCLK = 0x00A6, 448 WM_NCMBUTTONDOWN = 0x00A7, 449 WM_NCMBUTTONUP = 0x00A8, 450 WM_NCMBUTTONDBLCLK = 0x00A9, 451 WM_NCXBUTTONDOWN = 0x00AB, 452 WM_NCXBUTTONUP = 0x00AC, 453 WM_NCXBUTTONDBLCLK = 0x00AD, 454 WM_KEYDOWN = 0x0100, 455 WM_KEYUP = 0x0101, 456 WM_CHAR = 0x0102, 457 WM_DEADCHAR = 0x0103, 458 WM_SYSKEYDOWN = 0x0104, 459 WM_SYSKEYUP = 0x0105, 460 WM_SYSCHAR = 0x0106, 461 WM_SYSDEADCHAR = 0x0107, 462 WM_KEYLAST = 0x0108, 463 WM_IME_STARTCOMPOSITION = 0x010D, 464 WM_IME_ENDCOMPOSITION = 0x010E, 465 WM_IME_COMPOSITION = 0x010F, 466 WM_IME_KEYLAST = 0x010F, 467 WM_INITDIALOG = 0x0110, 468 WM_COMMAND = 0x0111, 469 WM_SYSCOMMAND = 0x0112, 470 WM_TIMER = 0x0113, 471 WM_HSCROLL = 0x0114, 472 WM_VSCROLL = 0x0115, 473 WM_INITMENU = 0x0116, 474 WM_INITMENUPOPUP = 0x0117, 475 WM_MENUSELECT = 0x011F, 476 WM_MENUCHAR = 0x0120, 477 WM_ENTERIDLE = 0x0121, 478 WM_MENURBUTTONUP = 0x0122, 479 WM_MENUDRAG = 0x0123, 480 WM_MENUGETOBJECT = 0x0124, 481 WM_UNINITMENUPOPUP = 0x0125, 482 WM_MENUCOMMAND = 0x0126, 483 WM_CTLCOLORMSGBOX = 0x0132, 484 WM_CTLCOLOREDIT = 0x0133, 485 WM_CTLCOLORLISTBOX = 0x0134, 486 WM_CTLCOLORBTN = 0x0135, 487 WM_CTLCOLORDLG = 0x0136, 488 WM_CTLCOLORSCROLLBAR = 0x0137, 489 WM_CTLCOLORSTATIC = 0x0138, 490 WM_MOUSEMOVE = 0x0200, 491 WM_LBUTTONDOWN = 0x0201, 492 WM_LBUTTONUP = 0x0202, 493 WM_LBUTTONDBLCLK = 0x0203, 494 WM_RBUTTONDOWN = 0x0204, 495 WM_RBUTTONUP = 0x0205, 496 WM_RBUTTONDBLCLK = 0x0206, 497 WM_MBUTTONDOWN = 0x0207, 498 WM_MBUTTONUP = 0x0208, 499 WM_MBUTTONDBLCLK = 0x0209, 500 WM_MOUSEWHEEL = 0x020A, 501 WM_XBUTTONDOWN = 0x020B, 502 WM_XBUTTONUP = 0x020C, 503 WM_XBUTTONDBLCLK = 0x020D, 504 WM_PARENTNOTIFY = 0x0210, 505 WM_ENTERMENULOOP = 0x0211, 506 WM_EXITMENULOOP = 0x0212, 507 WM_NEXTMENU = 0x0213, 508 WM_SIZING = 0x0214, 509 WM_CAPTURECHANGED = 0x0215, 510 WM_MOVING = 0x0216, 511 WM_DEVICECHANGE = 0x0219, 512 WM_MDICREATE = 0x0220, 513 WM_MDIDESTROY = 0x0221, 514 WM_MDIACTIVATE = 0x0222, 515 WM_MDIRESTORE = 0x0223, 516 WM_MDINEXT = 0x0224, 517 WM_MDIMAXIMIZE = 0x0225, 518 WM_MDITILE = 0x0226, 519 WM_MDICASCADE = 0x0227, 520 WM_MDIICONARRANGE = 0x0228, 521 WM_MDIGETACTIVE = 0x0229, 522 WM_MDISETMENU = 0x0230, 523 WM_ENTERSIZEMOVE = 0x0231, 524 WM_EXITSIZEMOVE = 0x0232, 525 WM_DROPFILES = 0x0233, 526 WM_MDIREFRESHMENU = 0x0234, 527 WM_IME_SETCONTEXT = 0x0281, 528 WM_IME_NOTIFY = 0x0282, 529 WM_IME_CONTROL = 0x0283, 530 WM_IME_COMPOSITIONFULL = 0x0284, 531 WM_IME_SELECT = 0x0285, 532 WM_IME_CHAR = 0x0286, 533 WM_IME_REQUEST = 0x0288, 534 WM_IME_KEYDOWN = 0x0290, 535 WM_IME_KEYUP = 0x0291, 536 WM_MOUSEHOVER = 0x02A1, 537 WM_MOUSELEAVE = 0x02A3, 538 WM_CUT = 0x0300, 539 WM_COPY = 0x0301, 540 WM_PASTE = 0x0302, 541 WM_CLEAR = 0x0303, 542 WM_UNDO = 0x0304, 543 WM_RENDERFORMAT = 0x0305, 544 WM_RENDERALLFORMATS = 0x0306, 545 WM_DESTROYCLIPBOARD = 0x0307, 546 WM_DRAWCLIPBOARD = 0x0308, 547 WM_PAINTCLIPBOARD = 0x0309, 548 WM_VSCROLLCLIPBOARD = 0x030A, 549 WM_SIZECLIPBOARD = 0x030B, 550 WM_ASKCBFORMATNAME = 0x030C, 551 WM_CHANGECBCHAIN = 0x030D, 552 WM_HSCROLLCLIPBOARD = 0x030E, 553 WM_QUERYNEWPALETTE = 0x030F, 554 WM_PALETTEISCHANGING = 0x0310, 555 WM_PALETTECHANGED = 0x0311, 556 WM_HOTKEY = 0x0312, 557 WM_PRINT = 0x0317, 558 WM_PRINTCLIENT = 0x0318, 559 WM_THEME_CHANGED = 0x031A, 560 WM_HANDHELDFIRST = 0x0358, 561 WM_HANDHELDLAST = 0x035F, 562 WM_AFXFIRST = 0x0360, 563 WM_AFXLAST = 0x037F, 564 WM_PENWINFIRST = 0x0380, 565 WM_PENWINLAST = 0x038F, 566 WM_APP = 0x8000, 567 WM_USER = 0x0400, 568 WM_REFLECT = WM_USER + 0x1c00 569 } 570 #endregion 571 572 #region SetWindowPosFlags 573 public enum SetWindowPosFlags 574 { 575 SWP_NOSIZE = 0x0001, 576 SWP_NOMOVE = 0x0002, 577 SWP_NOZORDER = 0x0004, 578 SWP_NOREDRAW = 0x0008, 579 SWP_NOACTIVATE = 0x0010, 580 SWP_FRAMECHANGED = 0x0020, 581 SWP_SHOWWINDOW = 0x0040, 582 SWP_HIDEWINDOW = 0x0080, 583 SWP_NOCOPYBITS = 0x0100, 584 SWP_NOOWNERZORDER = 0x0200, 585 SWP_NOSENDCHANGING = 0x0400, 586 SWP_DRAWFRAME = 0x0020, 587 SWP_NOREPOSITION = 0x0200, 588 SWP_DEFERERASE = 0x2000, 589 SWP_ASYNCWINDOWPOS = 0x4000 590 } 591 #endregion 592 } 593 594 #region WINDOWINFO 595 [StructLayout(LayoutKind.Sequential)] 596 public struct WINDOWINFO 597 { 598 public UInt32 cbSize; 599 public RECT rcWindow; 600 public RECT rcClient; 601 public UInt32 dwStyle; 602 public UInt32 dwExStyle; 603 public UInt32 dwWindowStatus; 604 public UInt32 cxWindowBorders; 605 public UInt32 cyWindowBorders; 606 public UInt16 atomWindowType; 607 public UInt16 wCreatorVersion; 608 } 609 #endregion 610 611 #region POINT 612 [StructLayout(LayoutKind.Sequential)] 613 public struct POINT 614 { 615 public int x; 616 public int y; 617 618 #region Constructors 619 public POINT(int x, int y) 620 { 621 this.x = x; 622 this.y = y; 623 } 624 625 public POINT(Point point) 626 { 627 x = point.X; 628 y = point.Y; 629 } 630 #endregion 631 } 632 #endregion 633 634 #region RECT 635 [StructLayout(LayoutKind.Sequential)] 636 public struct RECT 637 { 638 public uint left; 639 public uint top; 640 public uint right; 641 public uint bottom; 642 643 #region Properties 644 public POINT Location 645 { 646 get { return new POINT((int)left, (int)top); } 647 set 648 { 649 right -= (left - (uint)value.x); 650 bottom -= (bottom - (uint)value.y); 651 left = (uint)value.x; 652 top = (uint)value.y; 653 } 654 } 655 656 public uint Width 657 { 658 get { return right - left; } 659 set { right = left + value; } 660 } 661 662 public uint Height 663 { 664 get { return bottom - top; } 665 set { bottom = top + value; } 666 } 667 #endregion 668 669 #region Overrides 670 public override string ToString() 671 { 672 return left + ":" + top + ":" + right + ":" + bottom; 673 } 674 #endregion 675 } 676 #endregion 677 678 #region WINDOWPOS 679 [StructLayout(LayoutKind.Sequential)] 680 public struct WINDOWPOS 681 { 682 public IntPtr hwnd; 683 public IntPtr hwndAfter; 684 public int x; 685 public int y; 686 public int cx; 687 public int cy; 688 public uint flags; 689 690 #region Overrides 691 public override string ToString() 692 { 693 return x + ":" + y + ":" + cx + ":" + cy + ":" + ((SWP_Flags)flags).ToString(); 694 } 695 #endregion 696 } 697 #endregion 698 699 #region NCCALCSIZE_PARAMS 700 [StructLayout(LayoutKind.Sequential)] 701 public struct NCCALCSIZE_PARAMS 702 { 703 public RECT rgrc1; 704 public RECT rgrc2; 705 public RECT rgrc3; 706 public IntPtr lppos; 707 } 708 #endregion 709 710 #region NMHDR 711 [StructLayout(LayoutKind.Sequential)] 712 public struct NMHDR 713 { 714 public IntPtr hwndFrom; 715 public uint idFrom; 716 public uint code; 717 } 718 #endregion 719 720 #region OFNOTIFY 721 [StructLayout(LayoutKind.Sequential)] 722 public struct OFNOTIFY 723 { 724 public NMHDR hdr; 725 public IntPtr OPENFILENAME; 726 public IntPtr fileNameShareViolation; 727 } 728 #endregion
补充一下
1.代码只提供思路,不能拿来继承一下,就能实现自己想要的功能。
2.可以自己将代码中DialogNativeWindow类的addControl替换为其他控件,比如PictureBox用来预览图片、TextBox用来预览txt文件、RichTextBox用来预览代码文件等等,还可自由组合。
3.可以自己将代码中DialogNativeWindow类的两个事件(SelectedFileChanged、SelectPathChanged)移到MultiOpenFileDialog中,并使其对外开放,外部程序可以监听该事件。
4.如果想做成通用类,拿过来继承一下就可以实现自己想要的效果,建议使MultiOpenFileDialog从UserControl,并将addControl设为自己。也就是说将自己添加到OpenFileDialog中去,MultiOpenFileDialog的派生类就可以在VS中设计自己想要的效果。
5.一个窗体新建显示时,它的拥有者会接收许多消息,包括WM_ACTIVATE、WM_IDLE等等,并且Lparam参数为新建窗体的句柄。
1 class Form1:Form 2 { 3 private void Form1_Load(Object sender,EventArgs e) 4 { 5 using(OpenFileDialog dia = new OpenFileDialog()) 6 { 7 dia.ShowDialog(this); 8 } 9 } 10 protected override void WndProc(ref Message m) 11 { 12 //当dia显示时,它的拥有者即为this,这里会接受一连串的Window消息,并且它的Lparam参数为dia的句柄 13 base.WndProc(ref m); 14 } 15 }
6.Windows中窗体和所谓的控件(button、textbox)本质上没有区别,任务栏与QQ聊天框或者Chrome浏览器的地址栏对我们程序员来讲,是同一个东西。
7.与窗体有关的Win32 API基本都需要窗体句柄,其实任何一个API几乎都需要知道操作对象的句柄(不一定是窗体)。
8.Windows中任何一个窗体(控件)理论上都是平级的,不管是否同一进程,也就是说,我的winform应用程序只要知道了Chrome浏览器窗体的句柄,就可以控制Chrome浏览器,监听Chrome窗体的Windows消息(除非Chrome程序本身禁止了此操作)。
9.Windows桌面应用程序开发中,(部分平台、语言)理解四个东西,即进程、线程 、窗体(已经说了,是广义上的窗体)、消息。
10.查看系统中以上四个东西,可以使用Spy++工具。
完了,剩下那个下次再写了,太多了。希望有帮助~