there's no way that just works, right?

<!-- Enter a brief description/summary of your PR here. What does it
fix/what does it change/how was it tested (even manually, if necessary)?
-->
## Summary of the Pull Request

This dll is not signed, will fail the pipeline

<!-- Please review the items on the PR checklist before submitting-->
## PR Checklist

- [ ] Closes: #xxx
<!-- - [ ] Closes: #yyy (add separate lines for additional resolved
issues) -->
- [ ] **Communication:** I've discussed this with core contributors
already. If the work hasn't been agreed, this work might be rejected
- [ ] **Tests:** Added/updated and all pass
- [ ] **Localization:** All end-user-facing strings can be localized
- [ ] **Dev docs:** Added/updated
- [ ] **New binaries:** Added on the required places
- [ ] [JSON for
signing](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ESRPSigning_core.json)
for new binaries
- [ ] [WXS for
installer](https://github.com/microsoft/PowerToys/blob/main/installer/PowerToysSetup/Product.wxs)
for new binaries and localization folder
- [ ] [YML for CI
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/ci/templates/build-powertoys-steps.yml)
for new test projects
- [ ] [YML for signed
pipeline](https://github.com/microsoft/PowerToys/blob/main/.pipelines/release.yml)
- [ ] **Documentation updated:** If checked, please file a pull request
on [our docs
repo](https://github.com/MicrosoftDocs/windows-uwp/tree/docs/hub/powertoys)
and link it here: #xxx

<!-- Provide a more detailed description of the PR, other things fixed,
or any additional comments/features here -->
## Detailed Description of the Pull Request / Additional comments

<!-- Describe how you validated the behavior. Add automated tests
wherever possible, but list manual validation steps taken as well -->
## Validation Steps Performed

.pipelines/ESRPSigning_core.json

@@ -291,6 +291,7 @@
                 "Mono.Cecil.Rocks.dll",
                 "Newtonsoft.Json.dll",
                 "CommunityToolkit.WinUI.Controls.TitleBar.dll",
+                "CommunityToolkit.WinUI.Controls.OpacityMaskView.dll",
 
                 "NLog.dll",
                 "HtmlAgilityPack.dll",

src/modules/cmdpal/CmdPalModuleInterface/CmdPalModuleInterface.vcxproj

@@ -58,6 +58,7 @@
     </ClCompile>
     <Link>
       <OutputFile>$(OutDir)$(TargetName)$(TargetExt)</OutputFile>
+      <AdditionalDependencies>Shlwapi.lib;%(AdditionalDependencies)</AdditionalDependencies>
     </Link>
   </ItemDefinitionGroup>
 

src/modules/cmdpal/CmdPalModuleInterface/dllmain.cpp

@@ -14,6 +14,7 @@
 #include <common/utils/winapi_error.h>
 #include <common/interop/shared_constants.h>
 #include <Psapi.h>
+#include <Shlwapi.h>
 #include <TlHelp32.h>
 #include <thread>
 
@@ -49,6 +50,29 @@ private:
     // Track if this is the first call to enable
     bool firstEnableCall = true;
 
+    static bool IsUriProtocolRegistered(const std::wstring& protocol)
+    {
+        WCHAR executable[MAX_PATH] = { 0 };
+        DWORD buffer_length = MAX_PATH;
+        
+        // Query if there's an executable associated with this URI protocol
+        HRESULT hr = AssocQueryString(ASSOCF_INIT_IGNOREUNKNOWN,
+                                      ASSOCSTR_EXECUTABLE,
+                                      protocol.c_str(),
+                                      nullptr,
+                                      executable,
+                                      &buffer_length);
+        
+        if (SUCCEEDED(hr) && buffer_length > 0)
+        {
+            Logger::trace(L"URI protocol '{}' is registered with executable: {}", protocol, executable);
+            return true;
+        }
+        
+        Logger::trace(L"URI protocol '{}' is not registered. HRESULT: 0x{:X}", protocol, static_cast<unsigned long>(hr));
+        return false;
+    }
+
     static bool LaunchApp(const std::wstring& appPath, const std::wstring& commandLineArgs, bool elevated, bool silentFail)
     {
         std::wstring dir = std::filesystem::path(appPath).parent_path();
@@ -269,6 +293,13 @@ public:
             return;
         }
 
+        // Check if x-cmdpal URI protocol handler is registered
+        if (!IsUriProtocolRegistered(L"x-cmdpal"))
+        {
+            Logger::error("x-cmdpal URI protocol handler is not registered. Cannot launch CmdPal.");
+            return;
+        }
+
         if (!firstEnableCall)
         {
             Logger::trace("Not first attempt, try to launch");