原文:
C# Winform WPF DeskBand 窗体嵌入任务栏，在任务栏显示文字
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最近写了个小程序，用于将固态硬盘的写入量等信息显示在任务栏，最开始使用Windows API也可以实现，但是当任务栏托盘增加的时候，会被遮盖，最终采用了DeskBand来实现，填了很多坑。
参考的GitHub地址：https://github.com/dsafa/CSDeskBand
DeskBand相关代码如下：
COLORREF：
// This code snippet was used by SharpShell.
//
using System.Drawing;
using System.Runtime.InteropServices;
namespace MyDiskInfo.Interop
{
[StructLayout(LayoutKind.Sequential)]
public struct COLORREF
{
public COLORREF(Color color)
{
Dword = (uint)color.R + (((uint)color.G) << 8) + (((uint)color.B) << 16);
}
public uint Dword;
public Color Color
{
get
{
return Color.FromArgb(
(int)(0x000000FFU & Dword),
(int)(0x0000FF00U & Dword) >> 8,
(int)(0x00FF0000U & Dword) >> 16);
}
}
}
}DESKBANDINFO：
using System;
using System.Runtime.InteropServices;
namespace MyDiskInfo.Interop
{
/// <summary>
/// Receives information about a band object. This structure is used with the deprecated IDeskBand::GetBandInfo method.
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct DESKBANDINFO
{
/// <summary>
/// Set of flags that determine which members of this structure are being requested.
/// </summary>
/// <remarks>
/// This will be a combination of the following values:
/// DBIM_MINSIZE ptMinSize is being requested.
/// DBIM_MAXSIZE ptMaxSize is being requested.
/// DBIM_INTEGRAL ptIntegral is being requested.
/// DBIM_ACTUAL ptActual is being requested.
/// DBIM_TITLE wszTitle is being requested.
/// DBIM_MODEFLAGS dwModeFlags is being requested.
/// DBIM_BKCOLOR crBkgnd is being requested.
/// </remarks>
public DBIM dwMask;
/// <summary>
/// Point structure that receives the minimum size of the band object.
/// The minimum width is placed in the x member and the minimum height
/// is placed in the y member.
/// </summary>
public POINT ptMinSize;
/// <summary>
/// Point structure that receives the maximum size of the band object.
/// The maximum height is placed in the y member and the x member is ignored.
/// If there is no limit for the maximum height, (LONG)-1 should be used.
/// </summary>
public POINT ptMaxSize;
/// <summary>
/// Point structure that receives the sizing step value of the band object.
/// The vertical step value is placed in the y member, and the x member is ignored.
/// The step value determines in what increments the band will be resized.
/// </summary>
/// <remarks>
/// This member is ignored if dwModeFlags does not contain DBIMF_VARIABLEHEIGHT.
/// </remarks>
public POINT ptIntegral;
/// <summary>
/// Point structure that receives the ideal size of the band object.
/// The ideal width is placed in the x member and the ideal height is placed in the y member.
/// The band container will attempt to use these values, but the band is not guaranteed to be this size.
/// </summary>
public POINT ptActual;
/// <summary>
/// The title of the band.
/// </summary>
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 255)]
public String wszTitle;
/// <summary>
/// A value that receives a set of flags that define the mode of operation for the band object.
/// </summary>
/// <remarks>
/// This must be one or a combination of the following values.
/// DBIMF_NORMAL
/// The band is normal in all respects. The other mode flags modify this flag.
/// DBIMF_VARIABLEHEIGHT
/// The height of the band object can be changed. The ptIntegral member defines the
/// step value by which the band object can be resized.
/// DBIMF_DEBOSSED
/// The band object is displayed with a sunken appearance.
/// DBIMF_BKCOLOR
/// The band will be displayed with the background color specified in crBkgnd.
/// </remarks>
public DBIMF dwModeFlags;
/// <summary>
/// The background color of the band.
/// </summary>
/// <remarks>
/// This member is ignored if dwModeFlags does not contain the DBIMF_BKCOLOR flag.
/// </remarks>
public COLORREF crBkgnd;
/// <summary>
/// The view mode of the band object. This is one of the following values.
/// </summary>
[Flags]
public enum DBIF
{
/// <summary>
/// Band object is displayed in a horizontal band.
/// </summary>
DBIF_VIEWMODE_NORMAL = 0x0000,
/// <summary>
/// Band object is displayed in a vertical band.
/// </summary>
DBIF_VIEWMODE_VERTICAL = 0x0001,
/// <summary>
/// Band object is displayed in a floating band.
/// </summary>
DBIF_VIEWMODE_FLOATING = 0x0002,
/// <summary>
/// Band object is displayed in a transparent band.
/// </summary>
DBIF_VIEWMODE_TRANSPARENT = 0x0004
}
/// <summary>
/// The set of flags that determine which members of this structure are being requested by the caller. One or more of the following values:
/// </summary>
[Flags]
public enum DBIM
{
/// <summary>
/// ptMinSize is requested.
/// </summary>
DBIM_MINSIZE = 0x0001,
/// <summary>
/// ptMaxSize is requested.
/// </summary>
DBIM_MAXSIZE = 0x0002,
/// <summary>
/// ptIntegral is requested.
/// </summary>
DBIM_INTEGRAL = 0x0004,
/// <summary>
/// ptActual is requested.
/// </summary>
DBIM_ACTUAL = 0x0008,
/// <summary>
/// wszTitle is requested.
/// </summary>
DBIM_TITLE = 0x0010,
/// <summary>
/// dwModeFlags is requested.
/// </summary>
DBIM_MODEFLAGS = 0x0020,
/// <summary>
/// crBkgnd is requested.
/// </summary>
DBIM_BKCOLOR = 0x0040
}
/// <summary>
/// A value that receives a set of flags that specify the mode of operation for the band object. One or more of the following values:
/// </summary>
[Flags]
public enum DBIMF : uint
{
/// <summary>
/// The band uses default properties. The other mode flags modify this flag.
/// </summary>
DBIMF_NORMAL = 0x0000,
/// <summary>
/// Windows XP and later: The band object is of a fixed sized and position. With this flag, a sizing grip is not displayed on the band object.
/// </summary>
DBIMF_FIXED = 0x0001,
/// <summary>
/// DBIMF_FIXEDBMP
/// Windows XP and later: The band object uses a fixed bitmap (.bmp) file as its background. Note that backgrounds are not supported in all cases, so the bitmap may not be seen even when this flag is set.
/// </summary>
DBIMF_FIXEDBMP = 0x0004,
/// <summary>
/// The height of the band object can be changed. The ptIntegral member defines the step value by which the band object can be resized.
/// </summary>
DBIMF_VARIABLEHEIGHT = 0x0008,
/// <summary>
/// Windows XP and later: The band object cannot be removed from the band container.
/// </summary>
DBIMF_UNDELETEABLE = 0x0010,
/// <summary>
/// The band object is displayed with a sunken appearance.
/// </summary>
DBIMF_DEBOSSED = 0x0020,
/// <summary>
/// The band is displayed with the background color specified in crBkgnd.
/// </summary>
DBIMF_BKCOLOR = 0x0040,
/// <summary>
/// Windows XP and later: If the full band object cannot be displayed (that is, the band object is smaller than ptActual, a chevron is shown to indicate that there are more options available. These options are displayed when the chevron is clicked.
/// </summary>
DBIMF_USECHEVRON = 0x0080,
/// <summary>
/// Windows XP and later: The band object is displayed in a new row in the band container.
/// </summary>
DBIMF_BREAK = 0x0100,
/// <summary>
/// Windows XP and later: The band object is the first object in the band container.
/// </summary>
DBIMF_ADDTOFRONT = 0x0200,
/// <summary>
/// Windows XP and later: The band object is displayed in the top row of the band container.
/// </summary>
DBIMF_TOPALIGN = 0x0400,
/// <summary>
/// Windows Vista and later: No sizing grip is ever displayed to allow the user to move or resize the band object.
/// </summary>
DBIMF_NOGRIPPER = 0x0800,
/// <summary>
/// Windows Vista and later: A sizing grip that allows the user to move or resize the band object is always shown, even if that band object is the only one in the container.
/// </summary>
DBIMF_ALWAYSGRIPPER = 0x1000,
/// <summary>
/// Windows Vista and later: The band object should not display margins.
/// </summary>
DBIMF_NOMARGINS = 0x2000
}
}
}POINT：
// This code snippet was used by SharpShell.
//
using System.Runtime.InteropServices;
namespace MyDiskInfo.Interop
{
/// <summary>
/// The POINT structure defines the x- and y- coordinates of a point.
/// </summary>
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode)]
public struct POINT
{
/// <summary>
/// The x-coordinate of the point.
/// </summary>
public int X;
/// <summary>
/// The y-coordinate of the point.
/// </summary>
public int Y;
}
}RECT：
using System.Runtime.InteropServices;
namespace MyDiskInfo.Interop
{
[StructLayout(LayoutKind.Sequential)]
public struct RECT
{
public RECT(int left, int top, int right, int bottom)
{
this.left = left;
this.top = top;
this.right = right;
this.bottom = bottom;
}
public int left, top, right, bottom;
public int Width()
{
return right - left;
}
public int Height()
{
return bottom - top;
}
public void Offset(int x, int y)
{
left += x;
right += x;
top += y;
bottom += y;
}
public void Set(int left, int top, int right, int bottom)
{
this.left = left;
this.top = top;
this.right = right;
this.bottom = bottom;
}
public bool IsEmpty()
{
return Width() == 0 && Height() == 0;
}
}
}Attributes：
using System;
using System.Runtime.InteropServices;
namespace MyDiskInfo
{
/// <summary>
/// The display name of the extension and the description for the HelpText(displayed in status bar when menu command selected).
/// </summary>
[AttributeUsage(AttributeTargets.Class)]
public class DeskBandInfoAttribute : System.Attribute
{
private string _displayName;
private string _helpText;
public string DisplayName
{
get { return _displayName; }
}
public string HelpText
{
get { return _helpText; }
}
public DeskBandInfoAttribute() { }
public DeskBandInfoAttribute(string displayName, string helpText)
{
_displayName = displayName;
_helpText = helpText;
}
}
}ComImport：
using System;
using System.Runtime.InteropServices;
namespace MyDiskInfo.Interop
{
/// <summary>
/// Provides a simple way to support communication between an object and its site in the container.
/// </summary>
[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("FC4801A3-2BA9-11CF-A229-00AA003D7352")]
public interface IObjectWithSite
{
/// <summary>
/// Enables a container to pass an object a pointer to the interface for its site.
/// </summary>
/// <param name="pUnkSite">A pointer to the IUnknown interface pointer of the site managing this object.
/// If NULL, the object should call Release on any existing site at which point the object no longer knows its site.</param>
void SetSite([In, MarshalAs(UnmanagedType.IUnknown)] Object pUnkSite);
/// <summary>
/// Retrieves the latest site passed using SetSite.
/// </summary>
/// <param name="riid">The IID of the interface pointer that should be returned in ppvSite.</param>
/// <param name="ppvSite">Address of pointer variable that receives the interface pointer requested in riid.</param>
void GetSite(ref Guid riid, [MarshalAs(UnmanagedType.IUnknown)] out Object ppvSite);
}
/// <summary>
/// Exposes a method that is used to communicate focus changes for a user input object contained in the Shell.
/// </summary>
[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("F1DB8392-7331-11D0-8C99-00A0C92DBFE8")]
public interface IInputObjectSite
{
/// <summary>
/// Informs the browser that the focus has changed.
/// </summary>
/// <param name="punkObj">The address of the IUnknown interface of the object gaining or losing the focus.</param>
/// <param name="fSetFocus">Indicates if the object has gained or lost the focus. If this value is nonzero, the object has gained the focus.
/// If this value is zero, the object has lost the focus.</param>
/// <returns>Returns S_OK if the method was successful, or a COM-defined error code otherwise.</returns>
[PreserveSig]
Int32 OnFocusChangeIS([MarshalAs(UnmanagedType.IUnknown)] Object punkObj, Int32 fSetFocus);
}
/// <summary>
/// The IOleWindow interface provides methods that allow an application to obtain the handle to the various windows that participate in in-place activation, and also to enter and exit context-sensitive help mode.
/// </summary>
[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("00000114-0000-0000-C000-000000000046")]
public interface IOleWindow
{
/// <summary>
/// Retrieves a handle to one of the windows participating in in-place activation (frame, document, parent, or in-place object window).
/// </summary>
/// <param name="phwnd">A pointer to a variable that receives the window handle.</param>
/// <returns>This method returns S_OK on success.</returns>
[PreserveSig]
int GetWindow(out IntPtr phwnd);
/// <summary>
/// Determines whether context-sensitive help mode should be entered during an in-place activation session.
/// </summary>
/// <param name="fEnterMode">TRUE if help mode should be entered; FALSE if it should be exited.</param>
/// <returns>This method returns S_OK if the help mode was entered or exited successfully, depending on the value passed in fEnterMode.</returns>
[PreserveSig]
int ContextSensitiveHelp(bool fEnterMode);
}
[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("012DD920-7B26-11D0-8CA9-00A0C92DBFE8")]
public interface IDockingWindow : IOleWindow
{
#region IOleWindow
[PreserveSig]
new int GetWindow(out IntPtr phwnd);
[PreserveSig]
new int ContextSensitiveHelp(bool fEnterMode);
#endregion
/// <summary>
/// Instructs the docking window object to show or hide itself.
/// </summary>
/// <param name="fShow">TRUE if the docking window object should show its window.
/// FALSE if the docking window object should hide its window and return its border space by calling SetBorderSpaceDW with zero values.</param>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
[PreserveSig]
int ShowDW([In] bool fShow);
/// <summary>
/// Notifies the docking window object that it is about to be removed from the frame.
/// The docking window object should save any persistent information at this time.
/// </summary>
/// <param name="dwReserved">Reserved. This parameter should always be zero.</param>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
[PreserveSig]
int CloseDW([In] UInt32 dwReserved);
/// <summary>
/// Notifies the docking window object that the frame's border space has changed.
/// </summary>
/// <param name="prcBorder">Pointer to a RECT structure that contains the frame's available border space.</param>
/// <param name="punkToolbarSite">Pointer to the site's IUnknown interface. The docking window object should call the QueryInterface method for this interface, requesting IID_IDockingWindowSite.
/// The docking window object then uses that interface to negotiate its border space. It is the docking window object's responsibility to release this interface when it is no longer needed.</param>
/// <param name="fReserved">Reserved. This parameter should always be zero.</param>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
[PreserveSig]
int ResizeBorderDW(RECT prcBorder, [In, MarshalAs(UnmanagedType.IUnknown)] IntPtr punkToolbarSite, bool fReserved);
}
/// <summary>
/// Gets information about a band object.
/// </summary>
[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("EB0FE172-1A3A-11D0-89B3-00A0C90A90AC")]
public interface IDeskBand : IDockingWindow
{
#region IOleWindow
[PreserveSig]
new int GetWindow(out IntPtr phwnd);
[PreserveSig]
new int ContextSensitiveHelp(bool fEnterMode);
#endregion
#region IDockingWindow
[PreserveSig]
new int ShowDW([In] bool fShow);
[PreserveSig]
new int CloseDW([In] UInt32 dwReserved);
[PreserveSig]
new int ResizeBorderDW(RECT prcBorder, [In, MarshalAs(UnmanagedType.IUnknown)] IntPtr punkToolbarSite, bool fReserved);
#endregion
/// <summary>
/// Gets state information for a band object.
/// </summary>
/// <param name="dwBandID">The identifier of the band, assigned by the container. The band object can retain this value if it is required.</param>
/// <param name="dwViewMode">The view mode of the band object. One of the following values: DBIF_VIEWMODE_NORMAL, DBIF_VIEWMODE_VERTICAL, DBIF_VIEWMODE_FLOATING, DBIF_VIEWMODE_TRANSPARENT.</param>
/// <param name="pdbi">Pointer to a DESKBANDINFO structure that receives the band information for the object. The dwMask member of this structure indicates the specific information that is being requested.</param>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
[PreserveSig]
int GetBandInfo(UInt32 dwBandID, DESKBANDINFO.DBIF dwViewMode, ref DESKBANDINFO pdbi);
}
/// <summary>
/// Exposes methods to enable and query translucency effects in a deskband object.
/// </summary>
[ComImport]
[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
[Guid("79D16DE4-ABEE-4021-8D9D-9169B261D657")]
public interface IDeskBand2 : IDeskBand
{
#region IOleWindow
[PreserveSig]
new int GetWindow(out IntPtr phwnd);
[PreserveSig]
new int ContextSensitiveHelp(bool fEnterMode);
#endregion
#region IDockingWindow
[PreserveSig]
new int ShowDW([In] bool fShow);
[PreserveSig]
new int CloseDW([In] UInt32 dwReserved);
[PreserveSig]
new int ResizeBorderDW(RECT prcBorder, [In, MarshalAs(UnmanagedType.IUnknown)] IntPtr punkToolbarSite, bool fReserved);
#endregion
#region IDeskBand
[PreserveSig]
new int GetBandInfo(UInt32 dwBandID, DESKBANDINFO.DBIF dwViewMode, ref DESKBANDINFO pdbi);
#endregion
/// <summary>
/// Indicates the deskband's ability to be displayed as translucent.
/// </summary>
/// <param name="pfCanRenderComposited">When this method returns, contains a BOOL indicating ability.</param>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
[PreserveSig]
int CanRenderComposited(out bool pfCanRenderComposited);
/// <summary>
/// Sets the composition state.
/// </summary>
/// <param name="fCompositionEnabled">TRUE to enable the composition state; otherwise, FALSE.</param>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
[PreserveSig]
int SetCompositionState(bool fCompositionEnabled);
/// <summary>
/// Gets the composition state.
/// </summary>
/// <param name="pfCompositionEnabled">When this method returns, contains a BOOL that indicates state.</param>
/// <returns>If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.</returns>
[PreserveSig]
int GetCompositionState(out bool pfCompositionEnabled);
}
}DeskBand，这里和GitHub上的程序不同的是，DeskBand直接继承的ElementHost类，GitHub上的好像是多例的，我想要的是单例的，所以修改了一下。这里粘的代码是WPF的，如果你想实现Winform的，就让DeskBand继承UserControl，DeskBand代码如下：
// Copyright(c) 2017 Patrick Becker
//
// Visit the Project page for more information.
// https://github.com/patbec/TaskbarSampleExtension
using Microsoft.Win32;
using System;
using System.ComponentModel;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Windows.Forms;
using MyDiskInfo.Interop;
using System.Windows.Forms.Integration;
namespace MyDiskInfo
{
/// <summary>
/// Basic class for a DeskBand object
/// </summary>
/// <example>
/// [ComVisible(true)]
/// [Guid("00000000-0000-0000-0000-000000000000")]
/// [DeskBandInfo("Beispiel Erweiterung", "Diese ist eine Beispiel Erweiterung für die Taskleiste.")]
/// public class SampleExtension : DeskBand
/// { /*...*/ }
/// </example>
public class DeskBand : ElementHost, IObjectWithSite, IDeskBand2
{
private const int S_OK = 0;
private const int E_NOTIMPL = unchecked((int)0x80004001);
protected IInputObjectSite DeskBandSite;
public DeskBand()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.Name = "DeskBand";
}
#region Properties
/// <summary>
/// Title of the band object, displayed by default on the left or top of the object.
/// </summary>
[Browsable(true)]
[DefaultValue("")]
public String Title { get; set; }
/// <summary>
/// Minimum size of the band object. Default value of -1 sets no minimum constraint.
/// </summary>
[Browsable(true)]
[DefaultValue(typeof(Size), "-1,-1")]
public Size MinSize { get; set; }
/// <summary>
/// Maximum size of the band object. Default value of -1 sets no maximum constraint.
/// </summary>
[Browsable(true)]
[DefaultValue(typeof(Size), "-1,-1")]
public Size MaxSize { get; set; }
/// <summary>
/// Minimum vertical size of the band object. Default value of -1 sets no maximum constraint. (Used when the taskbar is aligned vertically.)
/// </summary>
[Browsable(true)]
[DefaultValue(typeof(Size), "-1,-1")]
public Size MinSizeVertical { get; set; }
/// <summary>
/// Says that band object's size must be multiple of this size. Defauilt value of -1 does not set this constraint.
/// </summary>
[Browsable(true)]
[DefaultValue(typeof(Size), "-1,-1")]
public Size IntegralSize { get; set; }
#endregion
#region IObjectWithSite
public void SetSite([In, MarshalAs(UnmanagedType.IUnknown)] Object pUnkSite)
{
if (DeskBandSite != null)
Marshal.ReleaseComObject(DeskBandSite);
DeskBandSite = (IInputObjectSite)pUnkSite;
}
public void GetSite(ref Guid riid, [MarshalAs(UnmanagedType.IUnknown)] out Object ppvSite)
{
ppvSite = DeskBandSite;
}
#endregion
#region IDeskBand2
public virtual int CanRenderComposited(out bool pfCanRenderComposited)
{
pfCanRenderComposited = true;
return S_OK;
}
public int SetCompositionState(bool fCompositionEnabled)
{
fCompositionEnabled = true;
return S_OK;
}
public int GetCompositionState(out bool pfCompositionEnabled)
{
pfCompositionEnabled = false;
return S_OK;
}
public int GetBandInfo(uint dwBandID, DESKBANDINFO.DBIF dwViewMode, ref DESKBANDINFO pdbi)
{
if (pdbi.dwMask.HasFlag(DESKBANDINFO.DBIM.DBIM_MINSIZE))
{
// Support for a vertical taskbar
// Most examples have no support for a vertical taskbar. Who in hell uses their taskbar vertically? Me! Very practical on a 21:9 monitor.
if (dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_FLOATING) || dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_VERTICAL))
{
pdbi.ptMinSize.Y = this.MinSizeVertical.Width;
pdbi.ptMinSize.X = this.MinSizeVertical.Height;
}
else
{
pdbi.ptMinSize.X = this.MinSize.Width;
pdbi.ptMinSize.Y = this.MinSize.Height;
}
}
if (pdbi.dwMask.HasFlag(DESKBANDINFO.DBIM.DBIM_MAXSIZE))
{
if (dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_FLOATING) || dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_VERTICAL))
{
pdbi.ptMaxSize.Y = this.MaxSize.Width;
pdbi.ptMaxSize.X = this.MaxSize.Height;
}
else
{
pdbi.ptMaxSize.X = this.MaxSize.Width;
pdbi.ptMaxSize.Y = this.MaxSize.Height;
}
}
if (pdbi.dwMask.HasFlag(DESKBANDINFO.DBIM.DBIM_INTEGRAL))
{
if (dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_FLOATING) || dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_VERTICAL))
{
pdbi.ptIntegral.Y = this.IntegralSize.Width;
pdbi.ptIntegral.X = this.IntegralSize.Height;
}
else
{
pdbi.ptIntegral.X = this.IntegralSize.Width;
pdbi.ptIntegral.Y = this.IntegralSize.Height;
}
}
if (pdbi.dwMask.HasFlag(DESKBANDINFO.DBIM.DBIM_ACTUAL))
{
if (dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_FLOATING) || dwViewMode.HasFlag(DESKBANDINFO.DBIF.DBIF_VIEWMODE_VERTICAL))
{
pdbi.ptActual.Y = this.Size.Width;
pdbi.ptActual.X = this.Size.Height;
}
else
{
pdbi.ptActual.X = this.Size.Width;
pdbi.ptActual.Y = this.Size.Height;
}
}
if (pdbi.dwMask.HasFlag(DESKBANDINFO.DBIM.DBIM_TITLE))
{
pdbi.wszTitle = this.Title;
}
pdbi.dwModeFlags = DESKBANDINFO.DBIMF.DBIMF_ALWAYSGRIPPER | DESKBANDINFO.DBIMF.DBIMF_NORMAL | DESKBANDINFO.DBIMF.DBIMF_VARIABLEHEIGHT;
pdbi.dwMask = pdbi.dwMask | DESKBANDINFO.DBIM.DBIM_BKCOLOR | DESKBANDINFO.DBIM.DBIM_TITLE; // Testen
return S_OK;
}
public int GetWindow(out IntPtr phwnd)
{
phwnd = Handle;
return S_OK;
}
public int ContextSensitiveHelp(bool fEnterMode)
{
return S_OK;
}
public int ShowDW([In] bool fShow)
{
if (fShow)
Show();
else
Hide();
return S_OK;
}
public virtual void ClearResources()
{
}
public int CloseDW([In] uint dwReserved)
{
ClearResources();
Dispose(true);
return S_OK;
}
public int ResizeBorderDW(RECT prcBorder, [In, MarshalAs(UnmanagedType.IUnknown)] IntPtr punkToolbarSite, bool fReserved)
{
return E_NOTIMPL;
}
#endregion
#region Register / Unregister
[ComRegisterFunctionAttribute]
public static void Register(Type t)
{
string guid = t.GUID.ToString("B");
DeskBandInfoAttribute[] deskBandInfo = (DeskBandInfoAttribute[])
t.GetCustomAttributes(typeof(DeskBandInfoAttribute), false);
// Register only the extension if the attribute DeskBandInfo is used.
if (deskBandInfo.Length == 1)
{
RegistryKey rkClass = Registry.ClassesRoot.CreateSubKey(@"CLSID\" + guid);
RegistryKey rkCat = rkClass.CreateSubKey("Implemented Categories");
string _displayName = t.Name;
string _helpText = t.Name;
if (deskBandInfo[0].DisplayName != null)
{
_displayName = deskBandInfo[0].DisplayName;
}
if (deskBandInfo[0].HelpText != null)
{
_helpText = deskBandInfo[0].HelpText;
}
rkClass.SetValue(null, _displayName);
rkClass.SetValue("MenuText", _displayName);
rkClass.SetValue("HelpText", _helpText);
// TaskBar
rkCat.CreateSubKey("{00021492-0000-0000-C000-000000000046}");
Console.WriteLine(String.Format("{0} {1} {2}", guid, _displayName, "successfully registered."));
}
else
{
Console.WriteLine(guid + " has no attributes");
}
}
[ComUnregisterFunctionAttribute]
public static void Unregister(Type t)
{
string guid = t.GUID.ToString("B");
DeskBandInfoAttribute[] deskBandInfo = (DeskBandInfoAttribute[])
t.GetCustomAttributes(typeof(DeskBandInfoAttribute), false);
if (deskBandInfo.Length == 1)
{
string _displayName = t.Name;
if (deskBandInfo[0].DisplayName != null)
{
_displayName = deskBandInfo[0].DisplayName;
}
Registry.ClassesRoot.CreateSubKey(@"CLSID").DeleteSubKeyTree(guid);
Console.WriteLine(String.Format("{0} {1} {2}", guid, _displayName, "successfully removed."));
}
else
{
Console.WriteLine(guid + " has no attributes");
}
}
#endregion
}
}DiskInfo，该类继承DeskBand，用于实现业务和界面，代码如下：
using DataStruct;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using WCFServer;
namespace MyDiskInfo
{
/// <summary>
/// 固态硬盘信息显示控件
/// </summary>
public partial class DiskInfoCtrl : UserControl
{
#region 字段
private Thread _thread = null;
private IClientServer _client = new ClientServer();
private double _width = 140;
private double _height = 30;
private int _interval = 60 * 1000; //刷新间隔
private DiskModel _diskInfo = null;
private DiskInfoViewModel _model = new DiskInfoViewModel();
#endregion
#region 构造函数
public DiskInfoCtrl()
{
InitializeComponent();
//尺寸
this.Width = _width;
this.Height = _height;
this.DataContext = _model;
ShowDiskInfo();
_thread = new Thread(new ThreadStart(() =>
{
while (true)
{
Thread.Sleep(_interval);
ShowDiskInfo();
}
}));
_thread.Start();
}
#endregion
#region 显示硬盘信息
/// <summary>
/// 显示硬盘信息
/// </summary>
private void ShowDiskInfo()
{
BackWork.Run(() =>
{
_diskInfo = _client.GetDiskInfo();
}, () =>
{
_model.Info = string.Format("{0}G {1}G {2}PE", _diskInfo.LBA_TodayWrite, _diskInfo.LBA_Write, _diskInfo.PE);
}, (ex) => { });
}
#endregion
#region 释放资源
public void ClearResources()
{
if (_thread != null)
{
_thread.Abort();
_thread = null;
}
}
#endregion
}
#region DiskInfoViewModel
public class DiskInfoViewModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private string _Info;
public string Info
{
get { return _Info; }
set
{
_Info = value;
OnPropertyChanged("Info");
}
}
public void OnPropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
}
#endregion
}实现业务界面的WPF用户控件：
XAML：
<UserControl x:Class="MyDiskInfo.DiskInfoCtrl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="30" d:DesignWidth="120" >
<Grid>
<TextBlock Text="{Binding Info}" FontFamily="微软雅黑" FontSize="12" Foreground="White" TextAlignment="Center" HorizontalAlignment="Center" VerticalAlignment="Center"></TextBlock>
</Grid>
</UserControl>后台代码：
using DataStruct;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using WCFServer;
namespace MyDiskInfo
{
/// <summary>
/// 固态硬盘信息显示控件
/// </summary>
public partial class DiskInfoCtrl : UserControl
{
#region 字段
private Thread _thread = null;
private IClientServer _client = new ClientServer();
private double _width = 140;
private double _height = 30;
private int _interval = 60 * 1000; //刷新间隔
private DiskModel _diskInfo = null;
private DiskInfoViewModel _model = new DiskInfoViewModel();
#endregion
#region 构造函数
public DiskInfoCtrl()
{
InitializeComponent();
//尺寸
this.Width = _width;
this.Height = _height;
_diskInfo = _client.GetDiskInfo();
_model.Info = string.Format("{0}G {1}G {2}PE", _diskInfo.LBA_TodayWrite, _diskInfo.LBA_Write, _diskInfo.PE);
this.DataContext = _model;
_thread = new Thread(new ThreadStart(() =>
{
while (true)
{
Thread.Sleep(_interval);
BackWork.Run(() =>
{
_diskInfo = _client.GetDiskInfo();
}, () =>
{
_model.Info = string.Format("{0}G {1}G {2}PE", _diskInfo.LBA_TodayWrite, _diskInfo.LBA_Write, _diskInfo.PE);
}, (ex) => { });
}
}));
_thread.Start();
}
#endregion
#region 释放资源
public void ClearResources()
{
if (_thread != null)
{
_thread.Abort();
_thread = null;
}
}
#endregion
}
#region DiskInfoViewModel
public class DiskInfoViewModel : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private string _Info;
public string Info
{
get { return _Info; }
set
{
_Info = value;
OnPropertyChanged("Info");
}
}
public void OnPropertyChanged(string name)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(name));
}
}
}
#endregion
}类库是需要签名的：
其它代码就不粘了，上面粘的代码，去掉业务代码，写个测试的界面，也可以跑起来，程序写好后，怎么安装呢，我写了个Install.bat代码如下：
@echo off
"%~dp0gacutil.exe" /if "%~dp0MyDiskInfo.dll"
"%~dp0RegAsm.exe" "%~dp0MyDiskInfo.dll"
reg import "%~dp0register.reg"
"%~dp0ServiceInstallUtil\InstallUtil.exe" "%~dp0MyDiskInfoService.exe"
sc config MyDiskInfoService start= auto
sc config MyDiskInfoService type= interact type= own
net start MyDiskInfoService
taskkill /f /im explorer.exe
start explorer.exe
Pause我是Win10系统，由于GitHub上的，安装之后DeskBand并没有显示在Windows工具栏菜单中，可能是注册表写的位置不对，我写了个register.reg，代码如下：
Windows Registry Editor Version 5.00
[HKEY_CLASSES_ROOT\CLSID\{C7B92F87-7E59-467F-A6FF-9518DADA1C2C}]
@="DiskInfo"
"MenuText"="DiskInfo"
"HelpText"="Show DiskInfo"
[HKEY_CLASSES_ROOT\CLSID\{C7B92F87-7E59-467F-A6FF-9518DADA1C2C}\Implemented Categories]
[HKEY_CLASSES_ROOT\CLSID\{C7B92F87-7E59-467F-A6FF-9518DADA1C2C}\Implemented Categories\{00021492-0000-0000-C000-000000000046}]
[HKEY_CLASSES_ROOT\CLSID\{C7B92F87-7E59-467F-A6FF-9518DADA1C2C}\Implemented Categories\{62C8FE65-4EBB-45e7-B440-6E39B2CDBF29}]
[HKEY_CLASSES_ROOT\CLSID\{C7B92F87-7E59-467F-A6FF-9518DADA1C2C}\InprocServer32]
@="mscoree.dll"
"ThreadingModel"="Both"
"Class"="MyDiskInfo.DiskInfo"
"Assembly"="MyDiskInfo, Version=1.0.0.0, Culture=neutral, PublicKeyToken=bec8b29cd4c20aff"
"RuntimeVersion"="v4.0.30319"
[HKEY_CLASSES_ROOT\CLSID\{C7B92F87-7E59-467F-A6FF-9518DADA1C2C}\InprocServer32\1.0.0.0]
"Class"="MyDiskInfo.DiskInfo"
"Assembly"="MyDiskInfo, Version=1.0.0.0, Culture=neutral, PublicKeyToken=bec8b29cd4c20aff"
"RuntimeVersion"="v4.0.30319"
[HKEY_CLASSES_ROOT\CLSID\{C7B92F87-7E59-467F-A6FF-9518DADA1C2C}\ProgId]
@="MyDiskInfo.DiskInfo"最终效果图：
存在的问题：Win10系统下正常，Win7操作系统下，背景无法透明，如果DeskBand修改为继承Form并且设置TransparenceKey属性为BackColor，依然无法实现透明，最后放弃了。
由于DeskBand没有权限读取固态硬盘信息，我写了个Windows服务来读取信息，Windows服务的安全性设置为“这是完全可信的应用程序”，使用WCF实现进程间管道通信来把数据传给DeskBand显示。
Windows服务注册为开机启动，但是DeskBand不是开机启动，需要自己勾选能才显示出来，DeskBand的自动启动我没有实现，网上资料多是C++的，用勾子实现。
完整代码如下：
MyDiskInfo_WPF版_固态硬盘写入量信息嵌入任务栏工具栏
来源：oschina
链接：https://my.oschina.net/u/4302179/blog/3588931