smourier

using System;
using System.Runtime.InteropServices;

namespace ConsoleApp18
{
    public class Program
    {
        static void Main()
        {
            GetUserColorPreference(out var pref, false);

smourier

#include <windows.ui.composition.interop.h>
#include <ShellScalingAPI.h>
#include <DispatcherQueue.h>
#include <winrt/Windows.System.h>
#include <winrt/Windows.UI.Composition.Desktop.h>

extern "C" IMAGE_DOS_HEADER __ImageBase;

using namespace winrt;
using namespace Windows::UI;

smourier

#include <Windows.h>
#include <ShObjIdl_core.h>
#include <windows.applicationmodel.datatransfer.h> // for the IIDs (ABI namespace)
#include <winrt/windows.applicationmodel.datatransfer.h>
#include <winrt/windows.foundation.collections.h>
#include <winrt/windows.storage.h>

// compile at least with ISO C++20 Standard (/std:c++20)

using namespace winrt;

smourier

$Source = @"
using System;
using System.Runtime.InteropServices;

namespace wuapi
{
    [ComImport, Guid("ef8208ea-2304-492d-9109-23813b0958e1"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
    public interface IUpdateInstaller4
    {
        void _VtblGap0_29(); // skip 4 (IDispatch) + 25 IUpdateInstaller4 methods

smourier

#include <windows.h>
#include <strsafe.h>
#include <atlbase.h>
#include <mfapi.h>
#include <stdio.h>

#pragma comment(lib, "advapi32")
#pragma comment(lib, "mfreadwrite")
#pragma comment(lib, "mfplat")
#pragma comment(lib, "mfuuid")

smourier

private async Task OpenCapturePicker()
{
    var picker = new GraphicsCapturePicker();
    var handle = new WindowInteropHelper(this).Handle;

    var interop = (IInitializeWithWindow)(object)picker;
    interop.Initialize(handle);

    await picker.PickSingleItemAsync();
}

smourier

using System;
using System.Runtime.InteropServices;
using UIAutomationClient; // add a COM reference to Windows\System32\UIAutomationCore.dll, and set "Embed Interop Types" to false on this reference's properties

namespace ConsoleApp
{
    internal class Program
    {
        private static readonly CUIAutomation8 _ui = new CUIAutomation8();

smourier

<?xml version="1.0" encoding="utf-8"?>
<assembly manifestVersion="1.0" xmlns="urn:schemas-microsoft-com:asm.v1">
  <assemblyIdentity version="1.0.0.0" name="MyAtlFile" type="win32" />
  <file name="MyAtlFile.dll">
    <comClass
      description="Simple Object"
      clsid="{a377453e-a407-4533-9c2f-537164c6882e}"
      threadingModel="Apartment"
      tlbid="{3f4efe00-9913-4fd9-9576-e1c8fc14c724}" />
    <typelib

smourier

using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Text;

namespace ConsoleApp2
{
    internal class Program
    {
        // code must be ran as admin

smourier

#define _AFXDLL
#include <WinSock2.h> // MFC...
#include <windows.h>
#include <afxwin.h> // CBitmap
#include <atlbase.h>
#include <atlcom.h> // CComPtr
#include <d2d1.h>
#include <d2d1_3.h> // ID2D1DeviceContext5
#include <wincodec.h> // Wic