I'm not sure what I did wrong

microsoft · May 20, 2020 · f314d90 · f314d90
1 parent d2aab9e
commit f314d90
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Showing 6 changed files with 141 additions and 1 deletion.
diff --git a/src/cascadia/CascadiaPackage/Package-Dev.appxmanifest b/src/cascadia/CascadiaPackage/Package-Dev.appxmanifest
@@ -3,9 +3,12 @@
 <Package
   xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
   xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:com="http://schemas.microsoft.com/appx/manifest/com/windows10"
   xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
   xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
+  xmlns:uap4="http://schemas.microsoft.com/appx/manifest/uap/windows10/4"
   xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
+  xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
   xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
   IgnorableNamespaces="uap mp rescap">
 
@@ -39,7 +42,7 @@
         Square150x150Logo="Images\Square150x150Logo.png"
         Square44x44Logo="Images\Square44x44Logo.png">
         <uap:DefaultTile
-          Wide310x150Logo="Images\Wide310x150Logo.png" 
+          Wide310x150Logo="Images\Wide310x150Logo.png"
           Square71x71Logo="Images\SmallTile.png"
           Square310x310Logo="Images\LargeTile.png"
           ShortName="ms-resource:AppShortNameDev">
@@ -58,6 +61,23 @@
             <desktop:ExecutionAlias Alias="wtd.exe" />
           </uap3:AppExecutionAlias>
         </uap3:Extension>
+
+        <com:Extension Category="windows.comServer">
+            <com:ComServer>
+                <com:SurrogateServer AppId="9f156763-7844-4dc4-bbb1-901f640f5155" DisplayName="WTShellExt">
+                    <com:Class Id="9f156763-7844-4dc4-bbb1-901f640f5155" Path="ShellExtension.dll" ThreadingModel="STA"/>
+                </com:SurrogateServer>
+            </com:ComServer>
+        </com:Extension>
+        <desktop4:Extension Category="windows.fileExplorerContextMenus">
+            <desktop4:FileExplorerContextMenus>
+                <desktop4:ItemType Type=".txt">
+                    <desktop4:Verb Id="Command1" Clsid="9f156763-7844-4dc4-bbb1-901f640f5155" />
+                </desktop4:ItemType>
+            </desktop4:FileExplorerContextMenus>
+        </desktop4:Extension>
+
+
       </Extensions>
 
     </Application>

diff --git a/src/cascadia/ShellExtension/MyShellExt.cpp b/src/cascadia/ShellExtension/MyShellExt.cpp
@@ -4,6 +4,9 @@
 using namespace winrt;
 using namespace winrt::Windows::Foundation;
 
+static WCHAR const c_szVerbDisplayName[] = L"ExplorerCommand Verb Sample";
+static WCHAR const c_szVerbName[] = L"Sample.ExplorerCommandVerb";
+
 struct MyCoclass : winrt::implements<MyCoclass, IPersist, IStringable, IMyShellExt>
 {
     HRESULT __stdcall Call() noexcept override
@@ -22,3 +25,76 @@ struct MyCoclass : winrt::implements<MyCoclass, IPersist, IStringable, IMyShellE
         return L"MyCoclass as a string";
     }
 };
+
+// Agressively copied from
+// https://github.com/microsoft/Windows-classic-samples/blob/master/Samples/Win7Samples/winui/shell/appshellintegration/ExplorerCommandVerb/ExplorerCommandVerb.cpp
+
+HRESULT MyShellExt::Invoke(IShellItemArray* /*psiItemArray*/,
+                           IBindCtx* /*pbc*/)
+{
+    return S_OK;
+}
+
+HRESULT MyShellExt::GetToolTip(IShellItemArray* /*psiItemArray*/,
+                               LPWSTR* ppszInfotip)
+{
+    // tooltip provided here, in this case none is provieded
+    *ppszInfotip = NULL;
+    return E_NOTIMPL;
+}
+HRESULT MyShellExt::GetTitle(IShellItemArray* /*psiItemArray*/,
+                             LPWSTR* ppszName)
+{
+    // the verb name can be computed here, in this example it is static
+    return SHStrDup(c_szVerbDisplayName, ppszName);
+}
+HRESULT MyShellExt::GetState(IShellItemArray* /*psiItemArray*/,
+                             BOOL fOkToBeSlow,
+                             EXPCMDSTATE* pCmdState)
+{
+    // compute the visibility of the verb here, respect "fOkToBeSlow" if this is
+    // slow (does IO for example) when called with fOkToBeSlow == FALSE return
+    // E_PENDING and this object will be called back on a background thread with
+    // fOkToBeSlow == TRUE
+
+    *pCmdState = ECS_ENABLED;
+    return S_OK;
+
+    // HRESULT hr;
+    // if (fOkToBeSlow)
+    // {
+    //     Sleep(4 * 1000); // simulate expensive work
+    //     *pCmdState = ECS_ENABLED;
+    //     hr = S_OK;
+    // }
+    // else
+    // {
+    //     *pCmdState = ECS_DISABLED;
+    //     // returning E_PENDING requests that a new instance of this object be called back
+    //     // on a background thread so that it can do work that might be slow
+    //     hr = E_PENDING;
+    // }
+    // return hr;
+}
+HRESULT MyShellExt::GetIcon(IShellItemArray* /*psiItemArray*/,
+                            LPWSTR* ppszIcon)
+{
+    // the icon ref ("dll,-<resid>") is provied here, in this case none is provieded
+    *ppszIcon = NULL;
+    return E_NOTIMPL;
+}
+HRESULT MyShellExt::GetFlags(EXPCMDFLAGS* pFlags)
+{
+    *pFlags = ECF_DEFAULT;
+    return S_OK;
+}
+HRESULT MyShellExt::GetCanonicalName(GUID* pguidCommandName)
+{
+    *pguidCommandName = __uuidof(this);
+    return S_OK;
+}
+HRESULT MyShellExt::EnumSubCommands(IEnumExplorerCommand** ppEnum)
+{
+    *ppEnum = NULL;
+    return E_NOTIMPL;
+}
diff --git a/src/cascadia/ShellExtension/MyShellExt.h b/src/cascadia/ShellExtension/MyShellExt.h
@@ -19,3 +19,22 @@ struct __declspec(uuid("8eb80de0-e1ff-442c-956a-c5f2b54ca274")) IMyShellExt : ::
 {
     virtual HRESULT __stdcall Call() = 0;
 };
+
+struct __declspec(uuid("9f156763-7844-4dc4-bbb1-901f640f5155"))
+    MyShellExt : winrt::implements<MyShellExt, IExplorerCommand>
+{
+    HRESULT Invoke(IShellItemArray* psiItemArray,
+                   IBindCtx* pbc);
+    HRESULT GetToolTip(IShellItemArray* psiItemArray,
+                       LPWSTR* ppszInfotip);
+    HRESULT GetTitle(IShellItemArray* psiItemArray,
+                     LPWSTR* ppszName);
+    HRESULT GetState(IShellItemArray* psiItemArray,
+                     BOOL fOkToBeSlow,
+                     EXPCMDSTATE* pCmdState);
+    HRESULT GetIcon(IShellItemArray* psiItemArray,
+                    LPWSTR* ppszIcon);
+    HRESULT GetFlags(EXPCMDFLAGS* pFlags);
+    HRESULT GetCanonicalName(GUID* pguidCommandName);
+    HRESULT EnumSubCommands(IEnumExplorerCommand** ppEnum);
+};
diff --git a/src/cascadia/ShellExtension/ShellExtension.vcxproj b/src/cascadia/ShellExtension/ShellExtension.vcxproj
@@ -36,6 +36,7 @@
       <DependentUpon>Foo.idl</DependentUpon>
     </ClCompile>
     <ClCompile Include="MyShellExt.cpp" />
+    <ClCompile Include="dllmain.cpp" />
     <ClCompile Include="$(GeneratedFilesDir)module.g.cpp" />
   </ItemGroup>
   <ItemGroup>

diff --git a/src/cascadia/ShellExtension/dllmain.cpp b/src/cascadia/ShellExtension/dllmain.cpp
@@ -0,0 +1,21 @@
+#include "pch.h"
+#include "MyShellExt.h"
+
+HRESULT __stdcall DllGetClassObject(GUID const& clsid, GUID const& iid, void** result)
+{
+    try
+    {
+        *result = nullptr;
+
+        if (clsid == __uuidof(MyShellExt))
+        {
+            return winrt::make<MyShellExt>()->QueryInterface(iid, result);
+        }
+
+        return winrt::hresult_class_not_available().to_abi();
+    }
+    catch (...)
+    {
+        return winrt::to_hresult();
+    }
+}
diff --git a/src/cascadia/ShellExtension/pch.h b/src/cascadia/ShellExtension/pch.h
@@ -21,3 +21,6 @@
 #include <unknwn.h>
 #include <wil/cppwinrt.h>
 #include <winrt/Windows.Foundation.h>
+
+#include <Shobjidl.h>
+#include <shlwapi.h>