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.NET Shell Extensions - Shell Drop Handlers

, 19 Jan 2013 CPOL
Rapidly create Shell Drop Handler Extensions using .NET
SharpShell_Core_Library.zip
SharpShell.dll
SharpShell_Source_Code.zip
SharpShell Source Code
Dependencies
Apex
Apex.WinForms.dll
SharpShell
packages
Apex.1.5.0
Apex.1.5.0.nupkg
lib
net35
Apex.dll
net40
Apex.dll
sl30
Apex.Silverlight.dll
sl3-wp
Apex.WP7.dll
sl40
Apex.Silverlight4.dll
sl4-wp71
Apex.WP7.dll
sl50
Apex.Silverlight.dll
NUnit.2.6.2
lib
nunit.framework.dll
NUnit.2.6.2.nupkg
Samples
ContextMenu
CountLinesExtension
CountLinesExtension.csproj.vspscc
Key.snk
Properties
Resources
CountLines.bmp
DropHandler
XsdDropHandler
ExampleFiles
Key.snk
Properties
XsdDropHandler.csproj.vspscc
IconHandler
DllIconHandler
DllIconHandler.csproj.vspscc
Key.snk
Properties
Resources
ManagedDll.ico
NativeDll.ico
IconOverlayHandler
ReadOnlyFileIconOverlayHandler
Key.snk
Properties
ReadOnlyFileIconOverlayHandler.csproj.vspscc
Resources
ReadOnly.ico
InfoTipHandler
FolderInfoTipHandler
FolderInfoTipHandler.csproj.vspscc
Key.snk
Properties
PropertySheet
DrivePropertySheet
DrivePropertySheet.csproj.vspscc
Key.snk
Properties
TextFilePropertySheet
Key.snk
Properties
TextFilePropertySheet.csproj.vspscc
SharpShell
Attributes
Diagnostics
Extensions
Interop
Key.snk
NativeBridge
SharpShellNativeBridge32.dll
SharpShellNativeBridge64.dll
Properties
ServerRegistration
SharpContextMenu
SharpDropHandler
SharpIconHandler
SharpIconOverlayHandler
SharpInfoTipHandler
SharpPropertySheet
SharpShell.csproj.vspscc
SharpShellNativeBridge
SharpShellNativeBridge.vcxproj.filters
SharpShellNativeBridge.vcxproj.user
SharpShellNativeBridge.vcxproj.vspscc
Tools
ServerInspector
Properties
Settings.settings
ServerInspector.csproj.vspscc
Servers
ServerManager
About
LogView
Properties
Settings.settings
Resources
ChangeYourView.png
ContextMenu.png
Icon.png
openHS.png
PlayHS.png
PropertySheet.png
View_Details.png
View_LargeIcons.png
View_List.png
View_SmallIcons.png
View_Tiles.png
ServerDetails
ServerManager.csproj.vspscc
SharpShell.ico
TestShell
ShellExtensionManager
Properties
Settings.settings
ShellExtensionManager.csproj.vspscc
SharpShell_Tools.zip
SharpShell Tools
Apex.dll
Apex.WinForms.dll
ServerInspector.exe
ServerManager.exe
SharpShell.dll
System.Windows.Interactivity.dll
using System.Runtime.InteropServices;

namespace SharpShell.Interop
{
    /// <summary>
    /// Exposes methods that the Shell uses to retrieve flags and info tip information 
    /// for an item that resides in an IShellFolder implementation. Info tips are usually
    /// displayed inside a tooltip control.
    /// </summary>
    [ComImport]
    [Guid("00021500-0000-0000-C000-000000000046")]
    [InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IQueryInfo
    {
        /// <summary>
        /// Gets the info tip text for an item.
        /// </summary>
        /// <param name="dwFlags">Flags that direct the handling of the item from which you're retrieving the info tip text. This value is commonly zero.</param>
        /// <param name="ppwszTip">he address of a Unicode string pointer that, when this method returns successfully, receives the tip string pointer. Applications that implement this method must allocate memory for ppwszTip by calling CoTaskMemAlloc.
        /// Calling applications must call CoTaskMemFree to free the memory when it is no longer needed.</param>
        /// <returns>Returns S_OK if the function succeeds. If no info tip text is available, ppwszTip is set to NULL. Otherwise, returns a COM-defined error value.</returns>
        [PreserveSig]
        int GetInfoTip(QITIPF dwFlags, [MarshalAs(UnmanagedType.LPWStr)] out string ppwszTip);

        /// <summary>
        /// Gets the information flags for an item. This method is not currently used.
        /// </summary>
        /// <param name="pdwFlags">A pointer to a value that receives the flags for the item. If no flags are to be returned, this value should be set to zero.</param>
        /// <returns>Returns S_OK if pdwFlags returns any flag values, or a COM-defined error value otherwise.</returns>
        [PreserveSig]
        int GetInfoFlags(out int pdwFlags);
    }
}

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This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Dave Kerr
Software Developer
United Kingdom United Kingdom
Follow my blog at www.dwmkerr.com and find out about my charity at www.childrenshomesnepal.org.
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Article Copyright 2013 by Dave Kerr
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