New Notepad stub from Windows 10 Insider build 18963

NotepadUWP.cpp

#include <Windows.h>
#include <stdio.h>
#include <appmodel.h>
#include <inspectable.h>
#include <Shlwapi.h>

#ifdef _MSC_VER
#pragma comment(lib, "Ole32.lib")
#pragma comment(lib, "Shlwapi.lib")
#pragma comment(lib, "Shell32.lib")
#endif

static const GUID CLSID_DesktopAppxActivator = {
    0x168EB462,
    0x775F,
    0x42AE,
    { 0x91, 0x11, 0xD7, 0x14, 0xB2, 0x30, 0x6C, 0x2E } };

static const GUID IID_DesktopAppxActivator = {
    0x72E3A5B0,
    0x8FEA,
    0x485C,
    { 0x9F, 0x8B, 0x82, 0x2B, 0x16, 0xDB, 0xA1, 0x7F } };

/* COM class from twinui.dll */
class IDesktopAppxActivator : public IUnknown
{
public:
    virtual HRESULT Activate(
        const wchar_t *applicationUserModelId,
        const wchar_t *packageRelativeExecutable,
        const wchar_t *arguments,
        void **processHandle) = 0;

    virtual HRESULT ActivateWithOptions(
        const wchar_t *applicationUserModelId,
        const wchar_t *executable,
        const wchar_t *arguments,
        unsigned int options,
        unsigned int parentProcessId,
        void **processHandle) = 0;

    virtual HRESULT ActivateWithOptionsAndArgs(
        const wchar_t *applicationUserModelId,
        const wchar_t *executable,
        const wchar_t *arguments,
        unsigned int options,
        unsigned int parentProcessId,
        IInspectable *activatedEventArgs,
        void **processHandle) = 0;
};

bool WINAPI IsPackageinstalled(PCWSTR packageFamilyName)
{
    unsigned int count = 0, bufferLength = 0;

    long res = FindPackagesByPackageFamily(
        packageFamilyName,
        240,
        &count,
        nullptr,
        &bufferLength,
        nullptr,
        nullptr);

    if ((!res || res == ERROR_INSUFFICIENT_BUFFER) && count > 0)
        return true;
    return false;
}

HANDLE WINAPI LaunchCentennialAppWithParameters(PCWSTR applicationUserModelId)
{
    HRESULT hRes;
    class IDesktopAppxActivator *appxActivate = nullptr;
    HANDLE processHandle = nullptr;

    hRes = CoInitialize(nullptr);
    hRes = CoCreateInstance(
        CLSID_DesktopAppxActivator,
        nullptr,
        CLSCTX_INPROC_SERVER,
        IID_DesktopAppxActivator,
        (void **)&appxActivate);

    const wchar_t *arguments = PathGetArgsW(GetCommandLineW());
    hRes = appxActivate->Activate(
        applicationUserModelId,
        L"Notepad\\notepad.exe",
        arguments,
        &processHandle);

    if (hRes == ERROR_INSTALL_PACKAGE_NOT_FOUND)
        wprintf(L"%ls Package was not found.\n", applicationUserModelId);

    appxActivate->Release();
    CoUninitialize();
    return processHandle;
}

int WINAPI main(void)
{
    HANDLE hProcess = NULL;

    if (IsPackageinstalled(L"Microsoft.WindowsNotepad_8wekyb3d8bbwe"))
    {
        hProcess = LaunchCentennialAppWithParameters(L"Microsoft.WindowsNotepad_8wekyb3d8bbwe!App");
        WaitForSingleObject(hProcess, INFINITE);
        return 0;
    }

    if (IsPackageinstalled(L"Microsoft.WindowsNotepad.Dev_8wekyb3d8bbwe"))
    {
        hProcess = LaunchCentennialAppWithParameters(L"Microsoft.WindowsNotepad.Dev_8wekyb3d8bbwe!App");
        WaitForSingleObject(hProcess, INFINITE);
        return 0;
    }

    ShellExecuteW(
        nullptr,
        nullptr,
        L"ms-windows-store://pdp/?PFN=Microsoft.WindowsNotepad_8wekyb3d8bbwe",
        nullptr,
        nullptr,
        SW_SHOWNORMAL);
    return 0;
}

@WalkingCat small gift...

nice, thanks 👍

@zodiacon Here is the trick in new notepad wrapper.

Thanks for the tip!