表格显示Windows 8的尺寸错误-如何获取实际尺寸？ [英] Form tells wrong size on Windows 8 — how to get real size?

问题描述

在Windows 8上，将WinForms窗体的窗体边框样式设置为可更改 c $ c>，。我会尝试看看这是否也可以解决我的问题。

更新2：

仅出于完整性考虑，以下是VMware Windows 7的结果：

更新3：

最终找到了一个解决方案，其中涉及使用 DwmGetWindowAttribute 函数以及 DWMWA_EXTENDED_FRAME_BOUNDS 值。我将在下面发布答案。

解决方案

为了回答我自己的问题，我终于找到了一种解决方案，其中涉及使用 DwmGetWindowAttribute 函数以及 DWMWA_EXTENDED_FRAME_BOUNDS 值

答案受此源代码似乎提供了一个函数在所有系统上工作。核心是一个函数：

  public static Rectangle GetWindowRectangle（IntPtr handle）
 {
 if（Environment .OSVersion.Version.Major< 6）
 {
 return GetWindowRect（handle）; 
} 
其他
 {
矩形； 
返回DWMWA_EXTENDED_FRAME_BOUNDS（手柄，矩形）
吗？矩形
：GetWindowRect（handle）; 
} 
} 
  

完整代码如下：

 公共静态类WindowHelper 
 {
 // https://code.google.com/p/zscreen/source/浏览/trunk/ZScreenLib/Global/GraphicsCore.cs?r=1349 
 
 ///< summary> 
 ///获取实际的窗口大小，无论是Win XP，Win Vista，7还是8。
 ///< / summary> 
 public static Rectangle GetWindowRectangle（IntPtr handle）
 {
 if（Environment.OSVersion.Version.Major< 6）
 {
 return GetWindowRect（handle）; 
} 
其他
 {
矩形； 
返回DWMWA_EXTENDED_FRAME_BOUNDS（句柄，矩形）？矩形：GetWindowRect（handle）; 
} 
} 
 
 [DllImport（@ dwmapi.dll）] 
 private static extern int DwmGetWindowAttribute（IntPtr hwnd，int dwAttribute，out Rect pvAttribute，int cbAttribute）; 
 
私有枚举Dwmwindowattribute 
 {
 DwmwaExtendedFrameBounds = 9 
} 
 
 [Serializable，StructLayout（LayoutKind.Sequential）] 
私有结构Rect 
 {
 // ReSharper禁用MemberCanBePrivate.Local 
 // ReSharper禁用FieldCanBeMadeReadOnly.Local 
 public int; 
 public int页首； 
 public int权利； 
 public int底部； 
 // ReSharper恢复FieldCanBeMadeReadOnly.Local 
 // ReSharper恢复MemberCanBePrivate.Local 
 
 public Rectangle ToRectangle（）
 {
 return Rectangle.FromLTRB（Left ，顶部，右侧，底部）； 
} 
} 
 
私有静态布尔DWMWA_EXTENDED_FRAME_BOUNDS（IntPtr句柄，矩形矩形）
 {
 rect rect; 
 var result = DwmGetWindowAttribute（handle，（int）Dwmwindowattribute.DwmwaExtendedFrameBounds，
 rect，Marshal.SizeOf（typeof（Rect）））; 
矩形= rect.ToRectangle（）; 
返回结果> = 0; 
} 
 
 [DllImport（@ user32.dll）] 
 [返回：MarshalAs（UnmanagedType.Bool）] 
 private static extern bool GetWindowRect（IntPtr hWnd ，在Rect lpRect中）； 
 
私有静态Rectangle GetWindowRect（IntPtr handle）
 {
 Rect rect; 
 GetWindowRect（handle，out rect）; 
 return rect.ToRectangle（）; 
} 
} 
  

Having a WinForms form with form border style set to Sizable on Windows 8, the DesktopBounds property tells the correct values:

In contrast, when having a form border style of FixedDialog, the values are wrong:

On Windows XP, the values are always correct:

My question is:

How to get the real size of a Window including the complete non-client area?

Update 1:

Seems that it is related to this SO question. I'll try and see whether this would solve my issue here, too.

Update 2:

Just for completeness, here are the results from a VMware Windows 7:

Update 3:

Finally found a solution which involves using the DwmGetWindowAttribute function together with the DWMWA_EXTENDED_FRAME_BOUNDS value. I'll post an answer below.

解决方案

To answer my own question, I finally found a solution which involves using the DwmGetWindowAttribute function together with the DWMWA_EXTENDED_FRAME_BOUNDS value

The answer was inspired by this source code which presents a function that seems to work on all system. The core is a function:

public static Rectangle GetWindowRectangle(IntPtr handle)
{
    if (Environment.OSVersion.Version.Major < 6)
    {
        return GetWindowRect(handle);
    }
    else
    {
        Rectangle rectangle;
        return DWMWA_EXTENDED_FRAME_BOUNDS(handle, out rectangle) 
                   ? rectangle 
                   : GetWindowRect(handle);
    }
}

Full code is provided below:

public static class WindowHelper
{
    // https://code.google.com/p/zscreen/source/browse/trunk/ZScreenLib/Global/GraphicsCore.cs?r=1349

    /// <summary>
    /// Get real window size, no matter whether Win XP, Win Vista, 7 or 8.
    /// </summary>
    public static Rectangle GetWindowRectangle(IntPtr handle)
    {
        if (Environment.OSVersion.Version.Major < 6)
        {
            return GetWindowRect(handle);
        }
        else
        {
            Rectangle rectangle;
            return DWMWA_EXTENDED_FRAME_BOUNDS(handle, out rectangle) ? rectangle : GetWindowRect(handle);
        }
    }

    [DllImport(@"dwmapi.dll")]
    private static extern int DwmGetWindowAttribute(IntPtr hwnd, int dwAttribute, out Rect pvAttribute, int cbAttribute);

    private enum Dwmwindowattribute
    {
        DwmwaExtendedFrameBounds = 9
    }

    [Serializable, StructLayout(LayoutKind.Sequential)]
    private struct Rect
    {
        // ReSharper disable MemberCanBePrivate.Local
        // ReSharper disable FieldCanBeMadeReadOnly.Local
        public int Left;
        public int Top;
        public int Right;
        public int Bottom;
        // ReSharper restore FieldCanBeMadeReadOnly.Local
        // ReSharper restore MemberCanBePrivate.Local

        public Rectangle ToRectangle()
        {
            return Rectangle.FromLTRB(Left, Top, Right, Bottom);
        }
    }

    private static bool DWMWA_EXTENDED_FRAME_BOUNDS(IntPtr handle, out Rectangle rectangle)
    {
        Rect rect;
        var result = DwmGetWindowAttribute(handle, (int)Dwmwindowattribute.DwmwaExtendedFrameBounds,
            out rect, Marshal.SizeOf(typeof(Rect)));
        rectangle = rect.ToRectangle();
        return result >= 0;
    }

    [DllImport(@"user32.dll")]
    [return: MarshalAs(UnmanagedType.Bool)]
    private static extern bool GetWindowRect(IntPtr hWnd, out Rect lpRect);

    private static Rectangle GetWindowRect(IntPtr handle)
    {
        Rect rect;
        GetWindowRect(handle, out rect);
        return rect.ToRectangle();
    }
}

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