Windows Zwischenablage: Warten auf den Clipboard History Change

#include <windows.h>
#include <winrt/Windows.ApplicationModel.DataTransfer.h>
#include <winrt/Windows.Foundation.h>
#include <winrt/Windows.System.h>
 
namespace winrt {
  using namespace winrt::Windows::ApplicationModel::DataTransfer;
  using namespace winrt::Windows::Foundation;
  using namespace winrt::Windows::System;
 }

 void SetClipboardText(HWND hwnd, PCWSTR text) {
  OpenClipboard(hwnd);
  EmptyClipboard();
  auto size = sizeof(wchar_t) * (1 + wcslen(text));
  auto clipData = GlobalAlloc(GMEM_MOVEABLE, size);
  auto buffer = (LPWSTR)GlobalLock(clipData);
  strcpy_s(buffer, size, text);
  GlobalUnlock(clipData);
  SetClipboardData(CF_UNICODETEXT, clipData);
  CloseClipboard();
 }

 static constexpr PCWSTR messages[] = {
  L"314159", // Bug-Nummer
  L"e83c5163316f89bfbde7d9ab23ca2e25604af290", // Commit
  L"Widget polarity was set incorrectly."
 };

 winrt::IAsyncAction Sample() {
   co_await winrt::resume_foreground(queue);
  if (!winrt::Clipboard::IsHistoryEnabled()) {
    co_return;
  }

  winrt::handle changed(
    winrt::check_pointer(CreateEventW(nullptr, FALSE, FALSE, nullptr)));
  auto historyChanged = 
    winrt::Clipboard::HistoryChanged(winrt::auto_revoke, 
      [h = changed.get()](auto&&, auto&&) {
      SetEvent(h);
    });

  auto tempWindow = CreateWindowExW(0, L"static", nullptr, WS_POPUPWINDOW, 
    0, 0, 0, 0, nullptr, nullptr, nullptr, nullptr);

  for (auto message : messages) {
    SetClipboardText(tempWindow, message);
    co_await winrt::resume_on_signal(changed.get());
    co_await winrt::resume_foreground(queue);
  }

  DestroyWindow(tempWindow);
 }

 int wmain([[maybe_unused]] int argc, [[maybe_unused]] wchar_t* argv[]) {
  winrt::init_apartment();
  {
    auto controller = 
      winrt::DispatcherQueueController::CreateOnDedicatedThread();
    Sample(controller.DispatcherQueue()).get();
    controller.ShutdownQueueAsync().get();
  }

  winrt::uninit_apartment();
  return 0;
 }