How to prevent application attachment in Windows 7?

Question

I am trying to prevent a user from binding my .NET application to the taskbar. I found Old New Thing code that does just that. However, it is in C ++.

#include <shellapi.h>
#include <propsys.h>
#include <propkey.h>

HRESULT MarkWindowAsUnpinnable(HWND hwnd)
{
 IPropertyStore *pps;
 HRESULT hr = SHGetPropertyStoreForWindow(hwnd, IID_PPV_ARGS(&pps));
 if (SUCCEEDED(hr)) {
  PROPVARIANT var;
  var.vt = VT_BOOL;
  var.boolVal = VARIANT_TRUE;
  hr = pps->SetValue(PKEY_AppUserModel_PreventPinning, var);
  pps->Release();
 }
 return hr;
}


BOOL
OnCreate(HWND hwnd, LPCREATESTRUCT lpcs)
{
 MarkWindowAsUnpinnable(hwnd);
 return TRUE;
}

I have very little chance of turning it into C #. Can anyone help?

Answer 1

You can download the Windows API Code Code , which has the necessary p / invoke calls needed to translate the code into a C # message.

, ( SHGetPropertyStoreForWindow, ).

Answer 2

Old New Thing , , .

, , "NoStartPage" \. , Windows , , .

Microsoft :

, Windows 7 - UAC . app.manifest.

(, ):

public static void Main(string[] args)
    {
        // Get Root
        var root = Registry.ClassesRoot;

        // Get the Applications key
        var applicationsSubKey = root.OpenSubKey("Applications", true);

        if (applicationsSubKey != null)
        {
            bool updateNoStartPageKey = false;

            // Check to see if your application already has a key created in the Applications key
            var appNameSubKey = applicationsSubKey.OpenSubKey("MyAppName.exe", true);

            if (appNameSubKey != null)
            {
                // Check to see if the NoStartPage value has already been created
                if (!appNameSubKey.GetValueNames().Contains("NoStartPage"))
                {
                    updateNoStartPageKey = true;
                }
            }
            else
            {
                // create key for your application in the Applications key under Root
                appNameSubKey = applicationsSubKey.CreateSubKey("MyAppName.exe", RegistryKeyPermissionCheck.Default);

                if (appNameSubKey != null)
                {
                    updateNoStartPageKey = true;
                }
            }

            if (updateNoStartPageKey)
            {
                // Create/update the value for NoStartPage so Windows will prevent the app from being pinned.
                appNameSubKey.SetValue("NoStartPage", string.Empty, RegistryValueKind.String);                    
            }
        }
    }

Answer 3

Using WindowsAPICodePack (via NuGet), you need code similar to:

// Ensure the handle is available
new WindowInteropHelper(window).EnsureHandle();

// Prevent the window from being pinned to the task bars
var preventPinningProperty = new PropertyKey(
        new Guid("9F4C2855-9F79-4B39-A8D0-E1D42DE1D5F3"), 9);
WindowProperties.SetWindowProperty(window, preventPinningProperty, "1");