Use 32bit helper to interact between 32bit processes

QuickLook.Native/QuickLook.Native32/HelperMethods.cpp

@@ -0,0 +1,56 @@
+#include "stdafx.h"
+#include "HelperMethods.h"
+
+void HelperMethods::GetSelectedInternal(CComQIPtr<IWebBrowserApp> pwba, PWCHAR buffer)
+{
+	CComQIPtr<IServiceProvider> psp;
+	if (FAILED(pwba->QueryInterface(IID_IServiceProvider, reinterpret_cast<void**>(&psp))))
+		return;
+
+	CComPtr<IShellBrowser> psb;
+	if (FAILED(psp->QueryService(SID_STopLevelBrowser, IID_IShellBrowser, reinterpret_cast<LPVOID*>(&psb))))
+		return;
+
+	CComPtr<IShellView> psv;
+	if (FAILED(psb->QueryActiveShellView(&psv)))
+		return;
+
+	CComPtr<IDataObject> dao;
+	if (FAILED(psv->GetItemObject(SVGIO_SELECTION, IID_IDataObject, reinterpret_cast<void**>(&dao))))
+		return;
+
+	return ObtainFirstItem(dao, buffer);
+}
+
+void HelperMethods::ObtainFirstItem(CComPtr<IDataObject> dao, PWCHAR buffer)
+{
+	FORMATETC formatetc;
+	STGMEDIUM medium;
+
+	formatetc.cfFormat = CF_HDROP;
+	formatetc.ptd = nullptr;
+	formatetc.dwAspect = DVASPECT_CONTENT;
+	formatetc.lindex = -1;
+	formatetc.tymed = TYMED_HGLOBAL;
+
+	medium.tymed = TYMED_HGLOBAL;
+
+	if (FAILED(dao->GetData(&formatetc, &medium)))
+		return;
+
+	int n = DragQueryFile(HDROP(medium.hGlobal), 0xFFFFFFFF, nullptr, 0);
+
+	if (n < 1)
+		return;
+
+	DragQueryFile(HDROP(medium.hGlobal), 0, buffer, MAX_PATH - 1);
+}
+
+bool HelperMethods::IsCursorActivated(HWND hwnd)
+{
+	auto tId = GetWindowThreadProcessId(hwnd, nullptr);
+
+	GUITHREADINFO gui = {sizeof gui};
+	GetGUIThreadInfo(tId, &gui);
+	return gui.flags || gui.hwndCaret;
+}