Hopefully fix a crash bug related to #32, #37 and #44

QuickLook.Native/QuickLook.Native32/DOpus.cpp

@@ -111,7 +111,7 @@ void DOpus::ParseXmlBuffer(PWCHAR buffer)
 
 void DOpus::PrepareMessageWindow()
 {
-	WNDCLASSEX wx = {'\0'};
+	WNDCLASSEX wx = {sizeof wx};
 	wx.cbSize = sizeof(WNDCLASSEX);
 	wx.lpfnWndProc = msgWindowProc;
 	wx.lpszClassName = MSGWINDOW_CLASS;

QuickLook.Native/QuickLook.Native32/HelperMethods.cpp

@@ -42,7 +42,7 @@ void HelperMethods::GetSelectedInternal(CComQIPtr<IWebBrowserApp> pwba, PWCHAR b
 void HelperMethods::ObtainFirstItem(CComPtr<IDataObject> dao, PWCHAR buffer)
 {
 	FORMATETC formatetc;
-	STGMEDIUM medium;
+	STGMEDIUM medium = {sizeof medium};
 
 	formatetc.cfFormat = CF_HDROP;
 	formatetc.ptd = nullptr;

QuickLook.Native/QuickLook.Native32/Shell32.cpp

@@ -106,12 +106,12 @@ void Shell32::getSelectedFromExplorer(PWCHAR buffer)
 	for (auto i = 0; i < count; i++)
 	{
 		VARIANT vi;
+		VariantInit(&vi);
 		V_VT(&vi) = VT_I4;
 		V_I4(&vi) = i;
 
 		CComPtr<IDispatch> pdisp;
-		// ReSharper disable once CppSomeObjectMembersMightNotBeInitialized
+		if (S_OK != psw->Item(vi, &pdisp))
-		if (FAILED(psw->Item(vi, &pdisp)))
 			continue;
 
 		CComQIPtr<IWebBrowserApp> pwba;
@@ -139,7 +139,8 @@ void Shell32::getSelectedFromDesktop(PWCHAR buffer)
 	if (FAILED(psw.CoCreateInstance(CLSID_ShellWindows)))
 		return;
 
-	VARIANT pvarLoc = {VT_EMPTY};
+	VARIANT pvarLoc;
+	VariantInit(&pvarLoc);
 	long phwnd;
 	if (FAILED(psw->FindWindowSW(&pvarLoc, &pvarLoc, SWC_DESKTOP, &phwnd, SWFO_NEEDDISPATCH, reinterpret_cast<IDispatch**>(&pwba))))
 		return;

QuickLook.Native/QuickLook.Native32/WoW64HookHelper.cpp

@@ -51,7 +51,7 @@ bool WoW64HookHelper::Launch()
 	auto p = wcsrchr(fullPath, L'\\');
 	memcpy(p, HELPER_FILE, wcslen(HELPER_FILE) * sizeof WCHAR);
 
-	STARTUPINFO si = {'\0'};
+	STARTUPINFO si = {sizeof si};
 	PROCESS_INFORMATION pi = {nullptr};
 	si.cb = sizeof si;
 
@@ -70,9 +70,9 @@ void WoW64HookHelper::createJob()
 
 	hJob = CreateJobObject(nullptr, nullptr);
 
-	JOBOBJECT_BASIC_LIMIT_INFORMATION BasicLimitInformation = {'\0'};
+	JOBOBJECT_BASIC_LIMIT_INFORMATION BasicLimitInformation = {sizeof BasicLimitInformation};
 	BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
-	JOBOBJECT_EXTENDED_LIMIT_INFORMATION lpJobObjectInfo = {'\0'};
+	JOBOBJECT_EXTENDED_LIMIT_INFORMATION lpJobObjectInfo = {sizeof lpJobObjectInfo};
 	lpJobObjectInfo.BasicLimitInformation = BasicLimitInformation;
 
 	SetInformationJobObject(hJob, JobObjectExtendedLimitInformation, &lpJobObjectInfo, sizeof JOBOBJECT_EXTENDED_LIMIT_INFORMATION);

QuickLook/NativeMethods/QuickLook.cs

@@ -15,6 +15,8 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+using System;
+using System.Diagnostics;
 using System.Runtime.InteropServices;
 using System.Text;
 using System.Threading.Tasks;
@@ -23,7 +25,7 @@ namespace QuickLook.NativeMethods
 {
     internal static class QuickLook
     {
-        private const int MaxPath = 260;
+        private const int MaxPath = 8192;
 
         [DllImport("QuickLook.Native32.dll", EntryPoint = "Init",
             CallingConvention = CallingConvention.Cdecl)]
@@ -50,21 +52,38 @@ namespace QuickLook.NativeMethods
         private static extern void GetCurrentSelectionNative_64([MarshalAs(UnmanagedType.LPWStr)] StringBuilder sb);
 
         internal static void Init()
+        {
+            try
             {
                 if (App.Is64Bit)
                     Init_64();
                 else
                     Init_32();
             }
+            catch (Exception e)
+            {
+                Debug.WriteLine(e);
+            }
+        }
 
         internal static FocusedWindowType GetFocusedWindowType()
+        {
+            try
             {
                 return App.Is64Bit ? GetFocusedWindowTypeNative_64() : GetFocusedWindowTypeNative_32();
             }
+            catch (Exception e)
+            {
+                Debug.WriteLine(e);
+                return FocusedWindowType.Invalid;
+            }
+        }
 
         internal static string GetCurrentSelection()
         {
             StringBuilder sb = null;
+            try
+            {
                 // communicate with COM in a separate thread
                 Task.Run(() =>
                 {
@@ -74,7 +93,11 @@ namespace QuickLook.NativeMethods
                     else
                         GetCurrentSelectionNative_32(sb);
                 }).Wait();
-
+            }
+            catch (Exception e)
+            {
+                Debug.WriteLine(e);
+            }
             return sb?.ToString() ?? string.Empty;
         }