C# 将窗口解钩到其原始状态

我使用以下代码将一个窗口挂到面板上：

SetParent(win, pnlApp.Handle);
SetWindowLong(win, GWL_STYLE, WS_VISIBLE);
MoveWindow(win, 0, 0, pnlApp.Width, pnlApp.Height, true);

SetParent(win, (IntPtr)0);

其中

win

是窗口句柄，作为

IntPtr

。想想记事本吧，它会很好地挂在面板上。
但当我尝试使用以下代码释放（解开）它时：

SetParent(win, pnlApp.Handle);
SetWindowLong(win, GWL_STYLE, WS_VISIBLE);
MoveWindow(win, 0, 0, pnlApp.Width, pnlApp.Height, true);

SetParent(win, (IntPtr)0);

显示时没有窗框！我的意思是它将再次释放到桌面，但它没有任何窗口框架

---

如何解决此问题？

关于问题中的代码：

• 应替换为-参见文档中的警告。后者在调用代码需要时调用前者

• 您需要调用以获取当前窗口样式，然后根据需要添加或删除样式；存储原始值：它将用于恢复以前的状态。
  ► 在本例中，删除了

  WS_SYSMENU

  样式，因此该窗口不会显示系统菜单以及通常位于标题中的所有按钮。这只是一个例子，看看它是如何工作的（它可能不适用于所有窗口）

• 返回上一个父级的句柄。如果存储此值，则需要将窗口还原为其以前的所有者（无论是什么）。如果窗口是顶级窗口，则上一个父窗口似乎是桌面，因此您希望

  IntPtr.Zero

  。可能不是，您可以得到一个不是

  IntPtr.Zero

  的句柄。只要存储返回的值，看看是什么，如果您感兴趣的话：）

• 您应该检查

  GetWindowLongPtr（）

  和

  SetWindowLongPtr（）

  的返回值：如果它是

  0

  ，那么就有错误。您可以使用获取错误代码。请注意，

  SetWindowLongPtr（）

  不会清除错误代码，因此您必须自己清除错误代码，然后调用

• 可以使用在新父对象的边界内重新定位窗口；这可能不是必需的。无论如何，我建议你打电话，你有更多的选择。请参见此处的代码

免责声明：记住陈雷蒙的博客帖子中的内容：

我不知道你想用这一切做什么；就因为你问：）

---

设置这些字段（或任何合适的字段）：

• windowdHwnd

  是要重新设置父窗口的句柄

• oldParent

  是上一个父级的句柄，由

  SetParent（）返回

• oldStyles

  将存储由

  GetWWindowLongPtr（）返回的上一个窗口的样式

当您拥有所关心的窗口句柄时，将

windowdHwnd

设置为该值。在之后调用此代码（它可能是一个方法，传递窗口句柄和容器控件，该控件将成为新的父控件-这里是一个名为

somePanel

的控件）

您可以编写（这只是删除）：

而不是（此开关打开/关闭）：

---

NativeMethods

class:

using System.Runtime.InteropServices;

public class NativeMethods
{
    [Flags]
    public enum SWP_Flags : uint
    {
        /// <summary>Retains the current size (ignores the cx and cy parameters).</summary>
        SWP_NOSIZE = 0x0001,
        /// <summary>Retains the current position (ignores X and Y parameters).</summary>
        SWP_NOMOVE = 0x0002,
        /// <summary>Retains the current Z order (ignores the hWndInsertAfter parameter).</summary>
        SWP_NOZORDER = 0x0004,
        /// <summary>Does not redraw changes. If this flag is set, no repainting of any kind occurs. This applies to
        /// the client area, the nonclient area (including the title bar and scroll bars), and any part of the parent
        /// window uncovered as a result of the window being moved. When this flag is set, the application must
        /// explicitly invalidate or redraw any parts of the window and parent window that need redrawing.</summary>
        SWP_NOREDRAW = 0x0008,
        /// <summary>Does not activate the window. If this flag is not set, the window is activated and moved to the
        /// top of either the topmost or non-topmost group (depending on the setting of the hWndInsertAfter
        /// parameter).</summary>
        SWP_NOACTIVATE = 0x0010,
        /// <summary>Draws a frame (defined in the window's class description) around the window.</summary>
        SWP_DRAWFRAME = 0x0020,
        /// <summary>Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message to
        /// the window, even if the window's size is not being changed. If this flag is not specified, WM_NCCALCSIZE
        /// is sent only when the window's size is being changed.</summary>
        SWP_FRAMECHANGED = 0x0020,
        /// <summary>Displays the window.</summary>
        SWP_SHOWWINDOW = 0x0040,
        /// <summary>Hides the window.</summary>
        SWP_HIDEWINDOW = 0x0080,
        /// <summary>Discards the entire contents of the client area. If this flag is not specified, the valid
        /// contents of the client area are saved and copied back into the client area after the window is sized or
        /// repositioned.</summary>
        SWP_NOCOPYBITS = 0x0100,
        /// <summary>Does not change the owner window's position in the Z order.</summary>
        SWP_NOOWNERZORDER = 0x0200,
        /// <summary>Same as the SWP_NOOWNERZORDER flag.</summary>
        SWP_NOREPOSITION = 0x0200,
        /// <summary>Prevents the window from receiving the WM_WINDOWPOSCHANGING message.</summary>
        SWP_NOSENDCHANGING = 0x0400,
        /// <summary>Internal use.</summary>
        SWP_NOCLIENTSIZE = 0x0800,
        /// <summary>Internal use.</summary>
        SWP_NOCLIENTMOVE = 0x1000,
        /// <summary>Prevents generation of the WM_SYNCPAINT message.</summary>
        SWP_DEFERERASE = 0x2000,
        /// <summary>If the calling thread and the thread that owns the window are attached to different input queues,
        /// the system posts the request to the thread that owns the window. This prevents the calling thread from
        /// blocking its execution while other threads process the request.</summary>
        SWP_ASYNCWINDOWPOS = 0x4000
    }

    [Flags]
    public enum WinStyles : uint
    {
        WS_BORDER = 0x00800000,                     //The window has a thin-line border.
        WS_CAPTION = 0x00C00000,                    //The window has a title bar (includes the WS_BORDER style).
        WS_CHILD = 0x40000000,                      //The window is a child window. A window with this style cannot have a menu bar. This style cannot be used with the WS_POPUP style.
        WS_CHILDWINDOW = 0x40000000,                //Same as the WS_CHILD style.
        WS_CLIPCHILDREN = 0x02000000,               //Excludes the area occupied by child windows when drawing occurs within the parent window. This style is used when creating the parent window.
        WS_CLIPSIBLINGS = 0x04000000,               //Clips child windows relative to each other; that is, when a particular child window receives a WM_PAINT message, the WS_CLIPSIBLINGS style clips all other overlapping child windows out of the region of the child window to be updated. If WS_CLIPSIBLINGS is not specified and child windows overlap, it is possible, when drawing within the client area of a child window, to draw within the client area of a neighboring child window.
        WS_DISABLED = 0x08000000,                   //The window is initially disabled. A disabled window cannot receive input from the user. To change this after a window has been created, use the EnableWindow function.
        WS_DLGFRAME = 0x00400000,                   //The window has a border of a style typically used with dialog boxes. A window with this style cannot have a title bar.
        WS_GROUP = 0x00020000,                      //The window is the first control of a group of controls. The group consists of this first control and all controls defined after it, up to the next control with the WS_GROUP style. The first control in each group usually has the WS_TABSTOP style so that the user can move from group to group. The user can subsequently change the keyboard focus from one control in the group to the next control in the group by using the direction keys.
                                                    //You can turn this style on and off to change dialog box navigation. To change this style after a window has been created, use the SetWindowLong function.
        WS_HSCROLL = 0x00100000,                    //The window has a horizontal scroll bar.
        WS_ICONIC = 0x20000000,                     //The window is initially minimized. Same as the WS_MINIMIZE style.
        WS_MAXIMIZE = 0x01000000,                   //The window is initially maximized.
        WS_MAXIMIZEBOX = 0x00010000,                //The window has a maximize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style must also be specified.
        WS_MINIMIZE = 0x20000000,                   //The window is initially minimized. Same as the WS_ICONIC style.
        WS_MINIMIZEBOX = 0x00020000,                //The window has a minimize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style must also be specified.
        WS_OVERLAPPED = 0x00000000,                 //The window is an overlapped window. An overlapped window has a title bar and a border. Same as the WS_TILED style.
        WS_OVERLAPPEDWINDOW = WS_OVERLAPPED |       //The window is an overlapped window. Same as the WS_TILEDWINDOW style.
                              WS_CAPTION |
                              WS_SYSMENU |
                              WS_THICKFRAME |
                              WS_MINIMIZEBOX |
                              WS_MAXIMIZEBOX,
        WS_POPUP = 0x80000000,                      //The windows is a pop-up window. This style cannot be used with the WS_CHILD style.
        WS_POPUPWINDOW = WS_POPUP |                 //The window is a pop-up window. The WS_CAPTION and WS_POPUPWINDOW styles must be combined to make the window menu visible.
                         WS_BORDER |
                         WS_SYSMENU,
        WS_SIZEBOX = 0x00040000,                    //The window has a sizing border. Same as the WS_THICKFRAME style.
        WS_SYSMENU = 0x00080000,                    //The window has a window menu on its title bar. The WS_CAPTION style must also be specified.
        WS_TABSTOP = 0x00010000,                    //The window is a control that can receive the keyboard focus when the user presses the TAB key. Pressing the TAB key changes the keyboard focus to the next control with the WS_TABSTOP style.
                                                    //You can turn this style on and off to change dialog box navigation. To change this style after a window has been created, use the SetWindowLong function. For user-created windows and modeless dialogs to work with tab stops, alter the message loop to call the IsDialogMessage function.
        WS_THICKFRAME = 0x00040000,                 //The window has a sizing border. Same as the WS_SIZEBOX style.
        WS_TILED = 0x00000000,                      //The window is an overlapped window. An overlapped window has a title bar and a border. Same as the WS_OVERLAPPED style.
        WS_TILEDWINDOW = WS_OVERLAPPED |            //The window is an overlapped window. Same as the WS_OVERLAPPEDWINDOW style.
                         WS_CAPTION |
                         WS_SYSMENU |
                         WS_THICKFRAME |
                         WS_MINIMIZEBOX |
                         WS_MAXIMIZEBOX,
        WS_VISIBLE = 0x10000000,                   //The window is initially visible. This style can be turned on and off by using the ShowWindow or SetWindowPos function.
        WS_VSCROLL = 0x00200000,                   //The window has a vertical scroll bar.
    }

    public enum GWL_Flags : int
    {
        GWL_USERDATA = -21,
        GWL_EXSTYLE = -20,
        GWL_STYLE = -16,
        GWL_ID = -12,
        GWLP_HWNDPARENT = -8,
        GWLP_HINSTANCE = -6,
        GWL_WNDPROC = -4,
        DWLP_MSGRESULT = 0x0,
        DWLP_DLGPROC = 0x4
        DWLP_USER = 0x8,
    }


    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    internal static extern IntPtr GetWindowLongPtr(IntPtr hWnd, GWL_Flags nIndex);

    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    internal static extern IntPtr SetWindowLongPtr(IntPtr hWnd, GWL_Flags nIndex, IntPtr dwNewLong);

    [DllImport("user32.dll", SetLastError = true)]
    internal static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

    [DllImport("user32.dll", SetLastError = true)]
    internal static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, SWP_Flags uFlags);

    [DllImport("kernel32.dll")]
    internal static extern void SetLastError(uint dwErrCode);
}

使用System.Runtime.InteropServices；
公共类本地方法
{
[旗帜]
公共枚举SWP_标志：uint
{
///保留当前大小（忽略cx和cy参数）。
SWP_NOSIZE=0x0001，
///保留当前位置（忽略X和Y参数）。
SWP_NOMOVE=0x0002，
///保留当前的Z顺序（忽略HwnInsertAfter参数）。
SWP_NOZORDER=0x0004，
///不重新绘制更改。如果设置了此标志，则不会发生任何类型的重新绘制。这适用于
///客户端区域、非客户端区域（包括标题栏和滚动条）以及父级的任何部分
///由于窗口被移动而未覆盖的窗口。设置此标志时，应用程序必须
///显式使窗口和父窗口中需要重画的任何部分无效或重画。
SWP_NOREDRAW=0x0008，
///不激活窗口。如果未设置此标志，则窗口将被激活并移动到
///最顶端或非最顶端组的顶端（取决于HwnInsertAfter的设置
///参数）。
SWP_NOACTIVATE=0x0010，
///围绕窗口绘制框架（在窗口的类描述中定义）。
SWP_牵引架=0x0020，
///应用使用SetWindowLong函数设置的新帧样式。向
///窗口，即使窗口的大小未更改。如果未指定此标志，则WM_NCCALCSIZE
///仅在更改窗口大小时发送。
SWP_FRAMECHANGED=0x0020，
///显示窗口。
SWP_SHOWWINDOW=0x0040，
///隐藏窗口。
SWP_HIDEWINDOW=0x0080，
///丢弃客户端区域的全部内容。如果未指定此标志，则有效的
///在调整窗口大小或大小后，客户端区域的内容将被保存并复制回客户端区域
///重新定位。
SWP_NOCOPYBITS=0x0100，
///不会更改所有者窗口在Z顺序中的位置。
SWP_NOOWNERZORDER=0x0200，
///与SWP_NOOWNERZORDER标志相同。
SWP_NOREPOSITION=0x0200，
///防止窗口接收WM_WindowPosChangeing消息。
SWP_NOSENDCHANGING=0x0400，
///内部使用。
SWP_NOCLIENTSIZE=0x0800，
///内部使用。
SWP_NOCLIENTMOVE=0x1000，
///防止生成WM_SYNCPAINT消息。
SWP_=0x2000，
///如果调用线程和拥有窗口的线程连接到不同的输入队列，
///系统将请求发布到拥有该窗口的线程。这将阻止调用线程
///在其他线程处理请求时阻止其执行。
SWP_ASYNCWINDOWPOS=0x4000
}
[Fl
int newStyle = oldStyles ^ (int)NativeMethods.WinStyles.WS_SYSMENU;

using System.Runtime.InteropServices;

public class NativeMethods
{
    [Flags]
    public enum SWP_Flags : uint
    {
        /// <summary>Retains the current size (ignores the cx and cy parameters).</summary>
        SWP_NOSIZE = 0x0001,
        /// <summary>Retains the current position (ignores X and Y parameters).</summary>
        SWP_NOMOVE = 0x0002,
        /// <summary>Retains the current Z order (ignores the hWndInsertAfter parameter).</summary>
        SWP_NOZORDER = 0x0004,
        /// <summary>Does not redraw changes. If this flag is set, no repainting of any kind occurs. This applies to
        /// the client area, the nonclient area (including the title bar and scroll bars), and any part of the parent
        /// window uncovered as a result of the window being moved. When this flag is set, the application must
        /// explicitly invalidate or redraw any parts of the window and parent window that need redrawing.</summary>
        SWP_NOREDRAW = 0x0008,
        /// <summary>Does not activate the window. If this flag is not set, the window is activated and moved to the
        /// top of either the topmost or non-topmost group (depending on the setting of the hWndInsertAfter
        /// parameter).</summary>
        SWP_NOACTIVATE = 0x0010,
        /// <summary>Draws a frame (defined in the window's class description) around the window.</summary>
        SWP_DRAWFRAME = 0x0020,
        /// <summary>Applies new frame styles set using the SetWindowLong function. Sends a WM_NCCALCSIZE message to
        /// the window, even if the window's size is not being changed. If this flag is not specified, WM_NCCALCSIZE
        /// is sent only when the window's size is being changed.</summary>
        SWP_FRAMECHANGED = 0x0020,
        /// <summary>Displays the window.</summary>
        SWP_SHOWWINDOW = 0x0040,
        /// <summary>Hides the window.</summary>
        SWP_HIDEWINDOW = 0x0080,
        /// <summary>Discards the entire contents of the client area. If this flag is not specified, the valid
        /// contents of the client area are saved and copied back into the client area after the window is sized or
        /// repositioned.</summary>
        SWP_NOCOPYBITS = 0x0100,
        /// <summary>Does not change the owner window's position in the Z order.</summary>
        SWP_NOOWNERZORDER = 0x0200,
        /// <summary>Same as the SWP_NOOWNERZORDER flag.</summary>
        SWP_NOREPOSITION = 0x0200,
        /// <summary>Prevents the window from receiving the WM_WINDOWPOSCHANGING message.</summary>
        SWP_NOSENDCHANGING = 0x0400,
        /// <summary>Internal use.</summary>
        SWP_NOCLIENTSIZE = 0x0800,
        /// <summary>Internal use.</summary>
        SWP_NOCLIENTMOVE = 0x1000,
        /// <summary>Prevents generation of the WM_SYNCPAINT message.</summary>
        SWP_DEFERERASE = 0x2000,
        /// <summary>If the calling thread and the thread that owns the window are attached to different input queues,
        /// the system posts the request to the thread that owns the window. This prevents the calling thread from
        /// blocking its execution while other threads process the request.</summary>
        SWP_ASYNCWINDOWPOS = 0x4000
    }

    [Flags]
    public enum WinStyles : uint
    {
        WS_BORDER = 0x00800000,                     //The window has a thin-line border.
        WS_CAPTION = 0x00C00000,                    //The window has a title bar (includes the WS_BORDER style).
        WS_CHILD = 0x40000000,                      //The window is a child window. A window with this style cannot have a menu bar. This style cannot be used with the WS_POPUP style.
        WS_CHILDWINDOW = 0x40000000,                //Same as the WS_CHILD style.
        WS_CLIPCHILDREN = 0x02000000,               //Excludes the area occupied by child windows when drawing occurs within the parent window. This style is used when creating the parent window.
        WS_CLIPSIBLINGS = 0x04000000,               //Clips child windows relative to each other; that is, when a particular child window receives a WM_PAINT message, the WS_CLIPSIBLINGS style clips all other overlapping child windows out of the region of the child window to be updated. If WS_CLIPSIBLINGS is not specified and child windows overlap, it is possible, when drawing within the client area of a child window, to draw within the client area of a neighboring child window.
        WS_DISABLED = 0x08000000,                   //The window is initially disabled. A disabled window cannot receive input from the user. To change this after a window has been created, use the EnableWindow function.
        WS_DLGFRAME = 0x00400000,                   //The window has a border of a style typically used with dialog boxes. A window with this style cannot have a title bar.
        WS_GROUP = 0x00020000,                      //The window is the first control of a group of controls. The group consists of this first control and all controls defined after it, up to the next control with the WS_GROUP style. The first control in each group usually has the WS_TABSTOP style so that the user can move from group to group. The user can subsequently change the keyboard focus from one control in the group to the next control in the group by using the direction keys.
                                                    //You can turn this style on and off to change dialog box navigation. To change this style after a window has been created, use the SetWindowLong function.
        WS_HSCROLL = 0x00100000,                    //The window has a horizontal scroll bar.
        WS_ICONIC = 0x20000000,                     //The window is initially minimized. Same as the WS_MINIMIZE style.
        WS_MAXIMIZE = 0x01000000,                   //The window is initially maximized.
        WS_MAXIMIZEBOX = 0x00010000,                //The window has a maximize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style must also be specified.
        WS_MINIMIZE = 0x20000000,                   //The window is initially minimized. Same as the WS_ICONIC style.
        WS_MINIMIZEBOX = 0x00020000,                //The window has a minimize button. Cannot be combined with the WS_EX_CONTEXTHELP style. The WS_SYSMENU style must also be specified.
        WS_OVERLAPPED = 0x00000000,                 //The window is an overlapped window. An overlapped window has a title bar and a border. Same as the WS_TILED style.
        WS_OVERLAPPEDWINDOW = WS_OVERLAPPED |       //The window is an overlapped window. Same as the WS_TILEDWINDOW style.
                              WS_CAPTION |
                              WS_SYSMENU |
                              WS_THICKFRAME |
                              WS_MINIMIZEBOX |
                              WS_MAXIMIZEBOX,
        WS_POPUP = 0x80000000,                      //The windows is a pop-up window. This style cannot be used with the WS_CHILD style.
        WS_POPUPWINDOW = WS_POPUP |                 //The window is a pop-up window. The WS_CAPTION and WS_POPUPWINDOW styles must be combined to make the window menu visible.
                         WS_BORDER |
                         WS_SYSMENU,
        WS_SIZEBOX = 0x00040000,                    //The window has a sizing border. Same as the WS_THICKFRAME style.
        WS_SYSMENU = 0x00080000,                    //The window has a window menu on its title bar. The WS_CAPTION style must also be specified.
        WS_TABSTOP = 0x00010000,                    //The window is a control that can receive the keyboard focus when the user presses the TAB key. Pressing the TAB key changes the keyboard focus to the next control with the WS_TABSTOP style.
                                                    //You can turn this style on and off to change dialog box navigation. To change this style after a window has been created, use the SetWindowLong function. For user-created windows and modeless dialogs to work with tab stops, alter the message loop to call the IsDialogMessage function.
        WS_THICKFRAME = 0x00040000,                 //The window has a sizing border. Same as the WS_SIZEBOX style.
        WS_TILED = 0x00000000,                      //The window is an overlapped window. An overlapped window has a title bar and a border. Same as the WS_OVERLAPPED style.
        WS_TILEDWINDOW = WS_OVERLAPPED |            //The window is an overlapped window. Same as the WS_OVERLAPPEDWINDOW style.
                         WS_CAPTION |
                         WS_SYSMENU |
                         WS_THICKFRAME |
                         WS_MINIMIZEBOX |
                         WS_MAXIMIZEBOX,
        WS_VISIBLE = 0x10000000,                   //The window is initially visible. This style can be turned on and off by using the ShowWindow or SetWindowPos function.
        WS_VSCROLL = 0x00200000,                   //The window has a vertical scroll bar.
    }

    public enum GWL_Flags : int
    {
        GWL_USERDATA = -21,
        GWL_EXSTYLE = -20,
        GWL_STYLE = -16,
        GWL_ID = -12,
        GWLP_HWNDPARENT = -8,
        GWLP_HINSTANCE = -6,
        GWL_WNDPROC = -4,
        DWLP_MSGRESULT = 0x0,
        DWLP_DLGPROC = 0x4
        DWLP_USER = 0x8,
    }


    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    internal static extern IntPtr GetWindowLongPtr(IntPtr hWnd, GWL_Flags nIndex);

    [DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
    internal static extern IntPtr SetWindowLongPtr(IntPtr hWnd, GWL_Flags nIndex, IntPtr dwNewLong);

    [DllImport("user32.dll", SetLastError = true)]
    internal static extern IntPtr SetParent(IntPtr hWndChild, IntPtr hWndNewParent);

    [DllImport("user32.dll", SetLastError = true)]
    internal static extern bool SetWindowPos(IntPtr hWnd, IntPtr hWndInsertAfter, int x, int y, int cx, int cy, SWP_Flags uFlags);

    [DllImport("kernel32.dll")]
    internal static extern void SetLastError(uint dwErrCode);
}