Method GetState

src/TortoiseShell/ContextMenu.cpp:2374–2504

}

HRESULT __stdcall CShellExt::GetState(IShellItemArray* psiItemArray, BOOL fOkToBeSlow, EXPCMDSTATE* pCmdState)
{
	CTraceToOutputDebugString::Instance()(__FUNCTION__ ": Shell :: GetState\n");
	*pCmdState = ECS_ENABLED;
	Microsoft::WRL::ComPtr<IShellItemArray> ownItemArray;
	if (m_site)
	{
		Microsoft::WRL::ComPtr<IOleWindow> oleWindow;
		m_site.As(&oleWindow);
		if (oleWindow)
		{
			// We don't want to show the menu on the classic context menu.
			// The classic menu provides an IOleWindow, but the main context
			// menu in Win11 does not, except on the left tree view.
			// So we check the window class name: if it's "NamespaceTreeControl",
			// then we're dealing with the main context menu of the tree view.
			// If it's not, then we're dealing with the classic context menu
			// and there we hide this menu entry.
			HWND hWnd = nullptr;
			oleWindow->GetWindow(&hWnd);
			wchar_t szWndClassName[MAX_PATH] = { 0 };
			GetClassName(hWnd, szWndClassName, _countof(szWndClassName));
			if (wcscmp(szWndClassName, L"NamespaceTreeControl"))
			{
				CTraceToOutputDebugString::Instance()(__FUNCTION__ ": Shell :: GetState - hidden\n");
				*pCmdState = ECS_HIDDEN;
				return S_OK;
			}
			else
			{
				// tree view
				if (!psiItemArray)
				{
					// the shell disables dpi awareness for extensions, so enable them explicitly
					DPI_AWARENESS_CONTEXT context = SetThreadDpiAwarenessContext(DPI_AWARENESS_CONTEXT_PER_MONITOR_AWARE);
					Microsoft::WRL::ComPtr<INameSpaceTreeControl> nameSpaceTreeCtrl;
					oleWindow.As(&nameSpaceTreeCtrl);
					if (nameSpaceTreeCtrl)
					{
						// we do a hit test on the tree view to get the right-clicked item.
						// however this only works if the menu shows up due to a right-click.
						// if the menu is shown because of a key press (right windows key),
						// then this will get the wrong item if the mouse pointer is somewhere
						// over the tree view while the key is clicked!
						// if the mouse pointer is NOT over the tree view when the menu is brought up
						// via keyboard, then this works fine.
						auto msgPos = GetMessagePos();
						POINT msgPoint{};
						msgPoint.x = GET_X_LPARAM(msgPos);
						msgPoint.y = GET_Y_LPARAM(msgPos);
						POINT pt = msgPoint;
						ScreenToClient(hWnd, &pt);
						Microsoft::WRL::ComPtr<IShellItem> shellItem;

						nameSpaceTreeCtrl->HitTest(&pt, &shellItem);
						if (shellItem)
							SHCreateShellItemArrayFromShellItem(shellItem.Get(), IID_IShellItemArray, &ownItemArray);
						else