Added support for Share Target and added ReadMe

Samples/ChatAppShare/AppxManifest.xml

@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Package xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10" xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10" xmlns:uap10="http://schemas.microsoft.com/appx/manifest/uap/windows10/10" xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities" IgnorableNamespaces="uap uap10 rescap">
+  <Identity Name="Weixin" Publisher="CN=ravishroshan" Version="1.0.1.0" ProcessorArchitecture="neutral" />
+  <Properties>
+    <DisplayName>Weixin</DisplayName>
+    <PublisherDisplayName>Weixin</PublisherDisplayName>
+    <Logo>Assets\WeChat150×150minin.png</Logo>
+    <uap10:AllowExternalContent>true</uap10:AllowExternalContent>
+  </Properties>
+  <Resources>
+    <Resource Language="en-us" />
+  </Resources>
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Desktop" MinVersion="10.0.19041.0" MaxVersionTested="10.0.26100.0" />
+  </Dependencies>
+  <Applications>
+    <Application Id="Weixin" Executable="SampleChatAppWithShare.exe" uap10:TrustLevel="mediumIL" uap10:RuntimeBehavior="win32App">
+      <uap:VisualElements AppListEntry="none" DisplayName="Weixin" Description="Weixin" BackgroundColor="transparent" Square150x150Logo="Assets\WeChat150×150mini.png" Square44x44Logo="Assets\WeChat44×44mini.png"></uap:VisualElements>
+    </Application>
+	<Application Id="WeixinShare" Executable="ShareApp.exe" uap10:TrustLevel="mediumIL" uap10:RuntimeBehavior="win32App">
+      <uap:VisualElements AppListEntry="none" DisplayName="Weixin" Description="Weixin" BackgroundColor="transparent" Square150x150Logo="Assets\WeChat150×150mini.png" Square44x44Logo="Assets\WeChat44×44mini.png"></uap:VisualElements>
+      <Extensions>
+        <uap:Extension Category="windows.shareTarget">
+          <uap:ShareTarget Description="Send to Weixin">
+            <uap:SupportedFileTypes>
+              <uap:SupportsAnyFileType />
+            </uap:SupportedFileTypes>
+            <uap:DataFormat>StorageItems</uap:DataFormat>
+            <uap:DataFormat>Bitmap</uap:DataFormat>
+            <uap:DataFormat>URI</uap:DataFormat>
+            <uap:DataFormat>Text</uap:DataFormat>
+          </uap:ShareTarget>
+        </uap:Extension>
+      </Extensions>
+    </Application>
+  </Applications>
+  <Capabilities>
+    <rescap:Capability Name="runFullTrust" />
+    <rescap:Capability Name="unvirtualizedResources" />
+  </Capabilities>
+</Package>

Samples/ChatAppShare/README.md

@@ -0,0 +1,44 @@
+This repo contains a sample C++ application demonstrating how to use [Signed Sparse Packages](https://aka.ms/sparsepkgblog) to give a non-packaged desktop app access to new Windows APIs and features. 
+
+## Instructions
+
+You can learn more about Signed Sparse Packages and Identity, Registration & Activation of  Win32 apps in this [blogpost](https://aka.ms/sparsepkgblog) and in the [documentation](https://aka.ms/sparsepkgdocs).
+
+### Requirements
+
+1. Windows SDK version 10.0.19000.0 +
+2. Windows OS version 10.0.19000.0 +
+3. Microsoft Visual C++ Redistributables
+
+### SampleChatAppWithShare
+
+A non-package native Windows desktop Win32 GUI application written in C++. It installs a Signed Sparse Package and uses it to act as a Share Target.
+* Registration of a Signed Sparse Package happens in PackageIdentity.cpp.
+
+### ShareApp
+* Handling of Shared Data happens in ShareTargetManager.cpp.
+
+* Registration of a Signed Sparse Package happens in PackageIdentity.cpp.
+
+### Packaging
+* Manifest file to package both apps as external location is present in AppxManifest.xml at the root of this sample folder. For reference we have an MSIX as well.
+
+
+### Building and running the sample
+
+1. Make sure your machine has Developer Mode turned on.
+2. Retarget the solution to the SDK version on your machine – Right click -> Retarget solution.
+3. Add a project reference to the Windows.winmd file at "C:\Program Files (x86)\Windows Kits\10\UnionMetadata\\<SDK_Version>\Windows.winmd". (Right click PhotoStoreDemo project | Add | Reference| Browse | All files | Windows.winmd)
+4. Update the Publisher value in the AppxManifest.xml file and in SampleChatAppWithShare.exe.manifest to match the Publisher value in your cert. If you need to create a cert for signing have a look at [Creating an app package signing certificate](https://docs.microsoft.com/en-us/windows/win32/appxpkg/how-to-create-a-package-signing-certificate). 
+5. Install your cert on the machine
+6. Create a Sparse Package by packaging the updated contents of PackageWithExternalLocationCppSample using [App Packager](https://docs.microsoft.com/en-us/windows/win32/appxpkg/make-appx-package--makeappx-exe-) (MakeAppx.exe) and specifying the **/nv** flag. For example: MakeAppx.exe  pack  /d  \<Path to directory with AppxManifest.xml>  /p  \<Output Path> mypackage.msix  /nv
+7. Sign the new Sparse Package. See [Signing an app package using SignTool](https://docs.microsoft.com/en-us/windows/win32/appxpkg/how-to-sign-a-package-using-signtool) or you can also use [Device Guard Signing](https://docs.microsoft.com/en-us/microsoft-store/device-guard-signing-portal).
+8. In RegisterPackageWithExternalLocation() method (in PackageIdentity.cpp) update the value of **externalLocation** to match the output location of your VS Build binaries and the value of **packagePath** to match the path to your signed Sparse Package (.msix). Note that these values cannot be relative paths and must be complete paths.
+9. Build the app
+10. Copy the PhotoStoreDemoPkg\Assets folder and resources.pri file to the same location as your VS Build binaries. You can replace Assets with your own images.
+11. Run the app
+
+### Removing the package
+If you need to remove the package from package manager you can run the following command in an admin command prompt:
+
+powershell -c “get-appxpackage -name \*PackageWithExternalLocationCppSample\* | remove-appxpackage"

Samples/ChatAppShare/SampleChatAppWithShare.sln

@@ -0,0 +1,51 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.14.36401.2
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "SampleChatAppWithShare", "SampleChatAppWithShare\SampleChatAppWithShare.vcxproj", "{DD6EC845-790A-4BD4-B638-AF0964704337}"
+EndProject
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "ShareApp", "ShareApp\ShareApp.vcxproj", "{006AFCE4-5393-4696-9319-9FDD3054774E}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|ARM64 = Debug|ARM64
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|ARM64 = Release|ARM64
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Debug|ARM64.Build.0 = Debug|ARM64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Debug|x64.ActiveCfg = Debug|x64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Debug|x64.Build.0 = Debug|x64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Debug|x86.ActiveCfg = Debug|Win32
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Debug|x86.Build.0 = Debug|Win32
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Release|ARM64.ActiveCfg = Release|ARM64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Release|ARM64.Build.0 = Release|ARM64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Release|x64.ActiveCfg = Release|x64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Release|x64.Build.0 = Release|x64
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Release|x86.ActiveCfg = Release|Win32
+		{DD6EC845-790A-4BD4-B638-AF0964704337}.Release|x86.Build.0 = Release|Win32
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Debug|ARM64.Build.0 = Debug|ARM64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Debug|x64.ActiveCfg = Debug|x64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Debug|x64.Build.0 = Debug|x64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Debug|x86.ActiveCfg = Debug|Win32
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Debug|x86.Build.0 = Debug|Win32
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Release|ARM64.ActiveCfg = Release|ARM64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Release|ARM64.Build.0 = Release|ARM64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Release|x64.ActiveCfg = Release|x64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Release|x64.Build.0 = Release|x64
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Release|x86.ActiveCfg = Release|Win32
+		{006AFCE4-5393-4696-9319-9FDD3054774E}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6709D164-3EDF-4B1A-894A-2C561B2062CC}
+	EndGlobalSection
+EndGlobal

Samples/ChatAppShare/SampleChatAppWithShare/BackgroundService.cpp

@@ -0,0 +1,100 @@
+#include "BackgroundService.h"
+#include <iostream>
+
+// Global constants definition
+const std::string PIPE_NAME = "\\\\.\\pipe\\HelloWorldService";
+const std::string HELLO_WORLD_RESPONSE = "Hello world";
+
+HelloWorldService::HelloWorldService() : m_running(false) {}
+
+HelloWorldService::~HelloWorldService() {
+    Stop();
+}
+
+bool HelloWorldService::Start() {
+    if (m_running) {
+        return false;
+    }
+
+    m_running = true;
+    m_serviceThread = std::thread(&HelloWorldService::ServiceLoop, this);
+
+    std::cout << "Hello World Service started. Listening on pipe: " << PIPE_NAME << std::endl;
+    return true;
+}
+
+void HelloWorldService::Stop() {
+    if (m_running) {
+        m_running = false;
+        if (m_serviceThread.joinable()) {
+            m_serviceThread.join();
+        }
+        std::cout << "Hello World Service stopped." << std::endl;
+    }
+}
+
+bool HelloWorldService::IsRunning() const {
+    return m_running;
+}
+
+void HelloWorldService::ServiceLoop() {
+    while (m_running) {
+        // Create named pipe
+        HANDLE hPipe = CreateNamedPipeA(
+            PIPE_NAME.c_str(),
+            PIPE_ACCESS_DUPLEX,
+            PIPE_TYPE_MESSAGE | PIPE_READMODE_MESSAGE | PIPE_WAIT,
+            1, // Max instances
+            1024, // Output buffer size
+            1024, // Input buffer size
+            0, // Default timeout
+            nullptr // Security attributes
+        );
+
+        if (hPipe == INVALID_HANDLE_VALUE) {
+            std::cerr << "Failed to create named pipe. Error: " << GetLastError() << std::endl;
+            continue;
+        }
+
+        // Wait for client connection
+        std::cout << "Waiting for client connection..." << std::endl;
+
+        if (ConnectNamedPipe(hPipe, nullptr) || GetLastError() == ERROR_PIPE_CONNECTED) {
+            std::cout << "Client connected!" << std::endl;
+            HandleClient(hPipe);
+        }
+        else {
+            std::cerr << "Failed to connect to client. Error: " << GetLastError() << std::endl;
+        }
+
+        CloseHandle(hPipe);
+    }
+}
+
+void HelloWorldService::HandleClient(HANDLE hPipe) {
+    char buffer[1024];
+    DWORD bytesRead;
+    DWORD bytesWritten;
+
+    // Read request from client
+    if (ReadFile(hPipe, buffer, sizeof(buffer) - 1, &bytesRead, nullptr)) {
+        buffer[bytesRead] = '\0';
+        std::cout << "Received request: " << buffer << std::endl;
+
+        // Send "Hello world" response
+        const char* response = HELLO_WORLD_RESPONSE.c_str();
+        if (WriteFile(hPipe, response, static_cast<DWORD>(HELLO_WORLD_RESPONSE.length()), &bytesWritten, nullptr)) {
+            std::cout << "Sent response: " << response << std::endl;
+        }
+        else {
+            std::cerr << "Failed to send response. Error: " << GetLastError() << std::endl;
+        }
+    }
+    else {
+        std::cerr << "Failed to read from client. Error: " << GetLastError() << std::endl;
+    }
+
+    // Flush the pipe to allow the client to read the pipe's contents before disconnecting
+    FlushFileBuffers(hPipe);
+    DisconnectNamedPipe(hPipe);
+}

Samples/ChatAppShare/SampleChatAppWithShare/BackgroundService.h

@@ -0,0 +1,27 @@
+#pragma once
+
+#include <windows.h>
+#include <string>
+#include <thread>
+
+// Forward declarations and constants
+extern const std::string PIPE_NAME;
+extern const std::string HELLO_WORLD_RESPONSE;
+
+class HelloWorldService {
+private:
+    bool m_running;
+    std::thread m_serviceThread;
+
+public:
+    HelloWorldService();
+    ~HelloWorldService();
+
+    bool Start();
+    void Stop();
+    bool IsRunning() const;
+
+private:
+    void ServiceLoop();
+    void HandleClient(HANDLE hPipe);
+};