コード例 #1
0
VOID TaskDialogCreateIcons(
    _In_ PPH_UPDATER_CONTEXT Context
    )
{
    Context->IconSmallHandle = PH_LOAD_SHARED_ICON_SMALL(PhInstanceHandle, MAKEINTRESOURCE(PHAPP_IDI_PROCESSHACKER));
    Context->IconLargeHandle = PH_LOAD_SHARED_ICON_LARGE(PhInstanceHandle, MAKEINTRESOURCE(PHAPP_IDI_PROCESSHACKER));

    SendMessage(Context->DialogHandle, WM_SETICON, ICON_SMALL, (LPARAM)Context->IconSmallHandle);
    SendMessage(Context->DialogHandle, WM_SETICON, ICON_BIG, (LPARAM)Context->IconLargeHandle);
}
コード例 #2
0
ファイル: prpgthrd.c プロジェクト: ohio813/processhacker2
INT_PTR CALLBACK PhpProcessThreadsDlgProc(
    _In_ HWND hwndDlg,
    _In_ UINT uMsg,
    _In_ WPARAM wParam,
    _In_ LPARAM lParam
    )
{
    LPPROPSHEETPAGE propSheetPage;
    PPH_PROCESS_PROPPAGECONTEXT propPageContext;
    PPH_PROCESS_ITEM processItem;
    PPH_THREADS_CONTEXT threadsContext;
    HWND tnHandle;

    if (PhpPropPageDlgProcHeader(hwndDlg, uMsg, lParam,
        &propSheetPage, &propPageContext, &processItem))
    {
        threadsContext = (PPH_THREADS_CONTEXT)propPageContext->Context;

        if (threadsContext)
            tnHandle = threadsContext->ListContext.TreeNewHandle;
    }
    else
    {
        return FALSE;
    }

    switch (uMsg)
    {
    case WM_INITDIALOG:
        {
            threadsContext = propPageContext->Context =
                PhAllocate(PhEmGetObjectSize(EmThreadsContextType, sizeof(PH_THREADS_CONTEXT)));

            // The thread provider has a special registration mechanism.
            threadsContext->Provider = PhCreateThreadProvider(
                processItem->ProcessId
                );
            PhRegisterCallback(
                &threadsContext->Provider->ThreadAddedEvent,
                ThreadAddedHandler,
                threadsContext,
                &threadsContext->AddedEventRegistration
                );
            PhRegisterCallback(
                &threadsContext->Provider->ThreadModifiedEvent,
                ThreadModifiedHandler,
                threadsContext,
                &threadsContext->ModifiedEventRegistration
                );
            PhRegisterCallback(
                &threadsContext->Provider->ThreadRemovedEvent,
                ThreadRemovedHandler,
                threadsContext,
                &threadsContext->RemovedEventRegistration
                );
            PhRegisterCallback(
                &threadsContext->Provider->UpdatedEvent,
                ThreadsUpdatedHandler,
                threadsContext,
                &threadsContext->UpdatedEventRegistration
                );
            PhRegisterCallback(
                &threadsContext->Provider->LoadingStateChangedEvent,
                ThreadsLoadingStateChangedHandler,
                threadsContext,
                &threadsContext->LoadingStateChangedEventRegistration
                );
            threadsContext->WindowHandle = hwndDlg;

            // Initialize the list.
            tnHandle = GetDlgItem(hwndDlg, IDC_LIST);
            BringWindowToTop(tnHandle);
            PhInitializeThreadList(hwndDlg, tnHandle, &threadsContext->ListContext);
            TreeNew_SetEmptyText(tnHandle, &EmptyThreadsText, 0);
            PhInitializeProviderEventQueue(&threadsContext->EventQueue, 100);

            // Use Cycles instead of Context Switches on Vista and above, but only when we can
            // open the process, since cycle time information requires sufficient access to the
            // threads.
            if (WINDOWS_HAS_CYCLE_TIME)
            {
                HANDLE processHandle;
                PROCESS_EXTENDED_BASIC_INFORMATION extendedBasicInfo;

                // We make a distinction between PROCESS_QUERY_INFORMATION and PROCESS_QUERY_LIMITED_INFORMATION since
                // the latter can be used when opening audiodg.exe even though we can't access its threads using
                // THREAD_QUERY_LIMITED_INFORMATION.

                if (processItem->ProcessId == SYSTEM_IDLE_PROCESS_ID)
                {
                    threadsContext->ListContext.UseCycleTime = TRUE;
                }
                else if (NT_SUCCESS(PhOpenProcess(&processHandle, PROCESS_QUERY_INFORMATION, processItem->ProcessId)))
                {
                    threadsContext->ListContext.UseCycleTime = TRUE;
                    NtClose(processHandle);
                }
                else if (NT_SUCCESS(PhOpenProcess(&processHandle, PROCESS_QUERY_LIMITED_INFORMATION, processItem->ProcessId)))
                {
                    threadsContext->ListContext.UseCycleTime = TRUE;

                    // We can't use cycle time for protected processes (without KProcessHacker).
                    if (NT_SUCCESS(PhGetProcessExtendedBasicInformation(processHandle, &extendedBasicInfo)) && extendedBasicInfo.IsProtectedProcess)
                    {
                        threadsContext->ListContext.UseCycleTime = FALSE;
                    }

                    NtClose(processHandle);
                }
            }

            if (processItem->ServiceList && processItem->ServiceList->Count != 0 && WINDOWS_HAS_SERVICE_TAGS)
                threadsContext->ListContext.HasServices = TRUE;

            PhEmCallObjectOperation(EmThreadsContextType, threadsContext, EmObjectCreate);

            if (PhPluginsEnabled)
            {
                PH_PLUGIN_TREENEW_INFORMATION treeNewInfo;

                treeNewInfo.TreeNewHandle = tnHandle;
                treeNewInfo.CmData = &threadsContext->ListContext.Cm;
                treeNewInfo.SystemContext = threadsContext;
                PhInvokeCallback(PhGetGeneralCallback(GeneralCallbackThreadTreeNewInitializing), &treeNewInfo);
            }

            PhLoadSettingsThreadList(&threadsContext->ListContext);

            PhThreadProviderInitialUpdate(threadsContext->Provider);
            PhRegisterThreadProvider(threadsContext->Provider, &threadsContext->ProviderRegistration);

            SET_BUTTON_ICON(IDC_OPENSTARTMODULE, PH_LOAD_SHARED_ICON_SMALL(MAKEINTRESOURCE(IDI_FOLDER)));
        }
        break;
    case WM_DESTROY:
        {
            PhEmCallObjectOperation(EmThreadsContextType, threadsContext, EmObjectDelete);

            PhUnregisterCallback(
                &threadsContext->Provider->ThreadAddedEvent,
                &threadsContext->AddedEventRegistration
                );
            PhUnregisterCallback(
                &threadsContext->Provider->ThreadModifiedEvent,
                &threadsContext->ModifiedEventRegistration
                );
            PhUnregisterCallback(
                &threadsContext->Provider->ThreadRemovedEvent,
                &threadsContext->RemovedEventRegistration
                );
            PhUnregisterCallback(
                &threadsContext->Provider->UpdatedEvent,
                &threadsContext->UpdatedEventRegistration
                );
            PhUnregisterCallback(
                &threadsContext->Provider->LoadingStateChangedEvent,
                &threadsContext->LoadingStateChangedEventRegistration
                );
            PhUnregisterThreadProvider(threadsContext->Provider, &threadsContext->ProviderRegistration);
            PhSetTerminatingThreadProvider(threadsContext->Provider);
            PhDereferenceObject(threadsContext->Provider);
            PhDeleteProviderEventQueue(&threadsContext->EventQueue);

            if (PhPluginsEnabled)
            {
                PH_PLUGIN_TREENEW_INFORMATION treeNewInfo;

                treeNewInfo.TreeNewHandle = tnHandle;
                treeNewInfo.CmData = &threadsContext->ListContext.Cm;
                PhInvokeCallback(PhGetGeneralCallback(GeneralCallbackThreadTreeNewUninitializing), &treeNewInfo);
            }

            PhSaveSettingsThreadList(&threadsContext->ListContext);
            PhDeleteThreadList(&threadsContext->ListContext);

            PhFree(threadsContext);

            PhpPropPageDlgProcDestroy(hwndDlg);
        }
        break;
    case WM_SHOWWINDOW:
        {
            if (!propPageContext->LayoutInitialized)
            {
                PPH_LAYOUT_ITEM dialogItem;

                dialogItem = PhAddPropPageLayoutItem(hwndDlg, hwndDlg,
                    PH_PROP_PAGE_TAB_CONTROL_PARENT, PH_ANCHOR_ALL);
                PhAddPropPageLayoutItem(hwndDlg, GetDlgItem(hwndDlg, IDC_LIST),
                    dialogItem, PH_ANCHOR_ALL);

#define ADD_BL_ITEM(Id) \
    PhAddPropPageLayoutItem(hwndDlg, GetDlgItem(hwndDlg, Id), dialogItem, PH_ANCHOR_LEFT | PH_ANCHOR_BOTTOM)

                // Thread details area
                {
                    ULONG id;

                    for (id = IDC_STATICBL1; id <= IDC_STATICBL11; id++)
                        ADD_BL_ITEM(id);

                    // Not in sequence
                    ADD_BL_ITEM(IDC_STATICBL12);
                }

                PhAddPropPageLayoutItem(hwndDlg, GetDlgItem(hwndDlg, IDC_STARTMODULE),
                    dialogItem, PH_ANCHOR_LEFT | PH_ANCHOR_RIGHT | PH_ANCHOR_BOTTOM);
                PhAddPropPageLayoutItem(hwndDlg, GetDlgItem(hwndDlg, IDC_OPENSTARTMODULE),
                    dialogItem, PH_ANCHOR_RIGHT | PH_ANCHOR_BOTTOM);
                ADD_BL_ITEM(IDC_STARTED);
                ADD_BL_ITEM(IDC_KERNELTIME);
                ADD_BL_ITEM(IDC_USERTIME);
                ADD_BL_ITEM(IDC_CONTEXTSWITCHES);
                ADD_BL_ITEM(IDC_CYCLES);
                ADD_BL_ITEM(IDC_STATE);
                ADD_BL_ITEM(IDC_PRIORITY);
                ADD_BL_ITEM(IDC_BASEPRIORITY);
                ADD_BL_ITEM(IDC_IOPRIORITY);
                ADD_BL_ITEM(IDC_PAGEPRIORITY);
                ADD_BL_ITEM(IDC_IDEALPROCESSOR);

                PhDoPropPageLayout(hwndDlg);

                propPageContext->LayoutInitialized = TRUE;
            }
        }
        break;
    case WM_COMMAND:
        {
            INT id = LOWORD(wParam);

            switch (id)
            {
            case ID_SHOWCONTEXTMENU:
                {
                    PhShowThreadContextMenu(hwndDlg, processItem, threadsContext, (PPH_TREENEW_CONTEXT_MENU)lParam);
                }
                break;
            case ID_THREAD_INSPECT:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);

                    if (threadItem)
                    {
                        PhReferenceObject(threadsContext->Provider);
                        PhShowThreadStackDialog(
                            hwndDlg,
                            threadsContext->Provider->ProcessId,
                            threadItem->ThreadId,
                            threadsContext->Provider
                            );
                        PhDereferenceObject(threadsContext->Provider);
                    }
                }
                break;
            case ID_THREAD_TERMINATE:
                {
                    PPH_THREAD_ITEM *threads;
                    ULONG numberOfThreads;

                    PhGetSelectedThreadItems(&threadsContext->ListContext, &threads, &numberOfThreads);
                    PhReferenceObjects(threads, numberOfThreads);

                    if (PhUiTerminateThreads(hwndDlg, threads, numberOfThreads))
                        PhDeselectAllThreadNodes(&threadsContext->ListContext);

                    PhDereferenceObjects(threads, numberOfThreads);
                    PhFree(threads);
                }
                break;
            case ID_THREAD_SUSPEND:
                {
                    PPH_THREAD_ITEM *threads;
                    ULONG numberOfThreads;

                    PhGetSelectedThreadItems(&threadsContext->ListContext, &threads, &numberOfThreads);
                    PhReferenceObjects(threads, numberOfThreads);
                    PhUiSuspendThreads(hwndDlg, threads, numberOfThreads);
                    PhDereferenceObjects(threads, numberOfThreads);
                    PhFree(threads);
                }
                break;
            case ID_THREAD_RESUME:
                {
                    PPH_THREAD_ITEM *threads;
                    ULONG numberOfThreads;

                    PhGetSelectedThreadItems(&threadsContext->ListContext, &threads, &numberOfThreads);
                    PhReferenceObjects(threads, numberOfThreads);
                    PhUiResumeThreads(hwndDlg, threads, numberOfThreads);
                    PhDereferenceObjects(threads, numberOfThreads);
                    PhFree(threads);
                }
                break;
            case ID_THREAD_AFFINITY:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);

                    if (threadItem)
                    {
                        PhReferenceObject(threadItem);
                        PhShowProcessAffinityDialog(hwndDlg, NULL, threadItem);
                        PhDereferenceObject(threadItem);
                    }
                }
                break;
            case ID_THREAD_PERMISSIONS:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);
                    PH_STD_OBJECT_SECURITY stdObjectSecurity;
                    PPH_ACCESS_ENTRY accessEntries;
                    ULONG numberOfAccessEntries;

                    if (threadItem)
                    {
                        stdObjectSecurity.OpenObject = PhpThreadPermissionsOpenThread;
                        stdObjectSecurity.ObjectType = L"Thread";
                        stdObjectSecurity.Context = threadItem->ThreadId;

                        if (PhGetAccessEntries(L"Thread", &accessEntries, &numberOfAccessEntries))
                        {
                            PhEditSecurity(
                                hwndDlg,
                                PhaFormatString(L"Thread %u", HandleToUlong(threadItem->ThreadId))->Buffer,
                                PhStdGetObjectSecurity,
                                PhStdSetObjectSecurity,
                                &stdObjectSecurity,
                                accessEntries,
                                numberOfAccessEntries
                                );
                            PhFree(accessEntries);
                        }
                    }
                }
                break;
            case ID_THREAD_TOKEN:
                {
                    NTSTATUS status;
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);
                    HANDLE threadHandle;

                    if (threadItem)
                    {
                        if (NT_SUCCESS(status = PhOpenThread(
                            &threadHandle,
                            ThreadQueryAccess,
                            threadItem->ThreadId
                            )))
                        {
                            PhShowTokenProperties(
                                hwndDlg,
                                PhpOpenThreadTokenObject,
                                (PVOID)threadHandle,
                                NULL
                                );

                            NtClose(threadHandle);
                        }
                        else
                        {
                            PhShowStatus(hwndDlg, L"Unable to open the thread", status, 0);
                        }
                    }
                }
                break;
            case ID_ANALYZE_WAIT:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);

                    if (threadItem)
                    {
                        PhReferenceObject(threadsContext->Provider->SymbolProvider);
                        PhUiAnalyzeWaitThread(
                            hwndDlg,
                            processItem->ProcessId,
                            threadItem->ThreadId,
                            threadsContext->Provider->SymbolProvider
                            );
                        PhDereferenceObject(threadsContext->Provider->SymbolProvider);
                    }
                }
                break;
            case ID_PRIORITY_TIMECRITICAL:
            case ID_PRIORITY_HIGHEST:
            case ID_PRIORITY_ABOVENORMAL:
            case ID_PRIORITY_NORMAL:
            case ID_PRIORITY_BELOWNORMAL:
            case ID_PRIORITY_LOWEST:
            case ID_PRIORITY_IDLE:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);

                    if (threadItem)
                    {
                        ULONG threadPriorityWin32;

                        switch (id)
                        {
                        case ID_PRIORITY_TIMECRITICAL:
                            threadPriorityWin32 = THREAD_PRIORITY_TIME_CRITICAL;
                            break;
                        case ID_PRIORITY_HIGHEST:
                            threadPriorityWin32 = THREAD_PRIORITY_HIGHEST;
                            break;
                        case ID_PRIORITY_ABOVENORMAL:
                            threadPriorityWin32 = THREAD_PRIORITY_ABOVE_NORMAL;
                            break;
                        case ID_PRIORITY_NORMAL:
                            threadPriorityWin32 = THREAD_PRIORITY_NORMAL;
                            break;
                        case ID_PRIORITY_BELOWNORMAL:
                            threadPriorityWin32 = THREAD_PRIORITY_BELOW_NORMAL;
                            break;
                        case ID_PRIORITY_LOWEST:
                            threadPriorityWin32 = THREAD_PRIORITY_LOWEST;
                            break;
                        case ID_PRIORITY_IDLE:
                            threadPriorityWin32 = THREAD_PRIORITY_IDLE;
                            break;
                        }

                        PhReferenceObject(threadItem);
                        PhUiSetPriorityThread(hwndDlg, threadItem, threadPriorityWin32);
                        PhDereferenceObject(threadItem);
                    }
                }
                break;
            case ID_IOPRIORITY_VERYLOW:
            case ID_IOPRIORITY_LOW:
            case ID_IOPRIORITY_NORMAL:
            case ID_IOPRIORITY_HIGH:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);

                    if (threadItem)
                    {
                        IO_PRIORITY_HINT ioPriority;

                        switch (id)
                        {
                        case ID_IOPRIORITY_VERYLOW:
                            ioPriority = IoPriorityVeryLow;
                            break;
                        case ID_IOPRIORITY_LOW:
                            ioPriority = IoPriorityLow;
                            break;
                        case ID_IOPRIORITY_NORMAL:
                            ioPriority = IoPriorityNormal;
                            break;
                        case ID_IOPRIORITY_HIGH:
                            ioPriority = IoPriorityHigh;
                            break;
                        }

                        PhReferenceObject(threadItem);
                        PhUiSetIoPriorityThread(hwndDlg, threadItem, ioPriority);
                        PhDereferenceObject(threadItem);
                    }
                }
                break;
            case ID_PAGEPRIORITY_VERYLOW:
            case ID_PAGEPRIORITY_LOW:
            case ID_PAGEPRIORITY_MEDIUM:
            case ID_PAGEPRIORITY_BELOWNORMAL:
            case ID_PAGEPRIORITY_NORMAL:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);

                    if (threadItem)
                    {
                        ULONG pagePriority;

                        switch (id)
                        {
                            case ID_PAGEPRIORITY_VERYLOW:
                                pagePriority = MEMORY_PRIORITY_VERY_LOW;
                                break;
                            case ID_PAGEPRIORITY_LOW:
                                pagePriority = MEMORY_PRIORITY_LOW;
                                break;
                            case ID_PAGEPRIORITY_MEDIUM:
                                pagePriority = MEMORY_PRIORITY_MEDIUM;
                                break;
                            case ID_PAGEPRIORITY_BELOWNORMAL:
                                pagePriority = MEMORY_PRIORITY_BELOW_NORMAL;
                                break;
                            case ID_PAGEPRIORITY_NORMAL:
                                pagePriority = MEMORY_PRIORITY_NORMAL;
                                break;
                        }

                        PhReferenceObject(threadItem);
                        PhUiSetPagePriorityThread(hwndDlg, threadItem, pagePriority);
                        PhDereferenceObject(threadItem);
                    }
                }
                break;
            case ID_THREAD_COPY:
                {
                    PPH_STRING text;

                    text = PhGetTreeNewText(tnHandle, 0);
                    PhSetClipboardString(tnHandle, &text->sr);
                    PhDereferenceObject(text);
                }
                break;
            case IDC_OPENSTARTMODULE:
                {
                    PPH_THREAD_ITEM threadItem = PhGetSelectedThreadItem(&threadsContext->ListContext);

                    if (threadItem && threadItem->StartAddressFileName)
                    {
                        PhShellExploreFile(hwndDlg, threadItem->StartAddressFileName->Buffer);
                    }
                }
                break;
            }
        }
        break;
    case WM_NOTIFY:
        {
            LPNMHDR header = (LPNMHDR)lParam;

            switch (header->code)
            {
            case PSN_SETACTIVE:
                break;
            case PSN_KILLACTIVE:
                // Can't disable, it screws up the deltas.
                break;
            }
        }
        break;
    case WM_PH_THREADS_UPDATED:
        {
            ULONG upToRunId = (ULONG)wParam;
            BOOLEAN firstRun = !!lParam;
            PPH_PROVIDER_EVENT events;
            ULONG count;
            ULONG i;

            events = PhFlushProviderEventQueue(&threadsContext->EventQueue, upToRunId, &count);

            if (events)
            {
                TreeNew_SetRedraw(tnHandle, FALSE);

                for (i = 0; i < count; i++)
                {
                    PH_PROVIDER_EVENT_TYPE type = PH_PROVIDER_EVENT_TYPE(events[i]);
                    PPH_THREAD_ITEM threadItem = PH_PROVIDER_EVENT_OBJECT(events[i]);

                    switch (type)
                    {
                    case ProviderAddedEvent:
                        PhAddThreadNode(&threadsContext->ListContext, threadItem, firstRun);
                        PhDereferenceObject(threadItem);
                        break;
                    case ProviderModifiedEvent:
                        PhUpdateThreadNode(&threadsContext->ListContext, PhFindThreadNode(&threadsContext->ListContext, threadItem->ThreadId));
                        break;
                    case ProviderRemovedEvent:
                        PhRemoveThreadNode(&threadsContext->ListContext, PhFindThreadNode(&threadsContext->ListContext, threadItem->ThreadId));
                        break;
                    }
                }

                PhFree(events);
            }

            PhTickThreadNodes(&threadsContext->ListContext);

            if (count != 0)
                TreeNew_SetRedraw(tnHandle, TRUE);

            if (propPageContext->PropContext->SelectThreadId)
            {
                PPH_THREAD_NODE threadNode;

                if (threadNode = PhFindThreadNode(&threadsContext->ListContext, propPageContext->PropContext->SelectThreadId))
                {
                    if (threadNode->Node.Visible)
                    {
                        TreeNew_SetFocusNode(tnHandle, &threadNode->Node);
                        TreeNew_SetMarkNode(tnHandle, &threadNode->Node);
                        TreeNew_SelectRange(tnHandle, threadNode->Node.Index, threadNode->Node.Index);
                        TreeNew_EnsureVisible(tnHandle, &threadNode->Node);
                    }
                }

                propPageContext->PropContext->SelectThreadId = NULL;
            }

            PhpUpdateThreadDetails(hwndDlg, threadsContext, FALSE);
        }
        break;
    case WM_PH_THREAD_SELECTION_CHANGED:
        {
            PhpUpdateThreadDetails(hwndDlg, threadsContext, TRUE);
        }
        break;
    }

    return FALSE;
}
コード例 #3
0
INT_PTR CALLBACK PhpMemoryEditorDlgProc(
    _In_ HWND hwndDlg,
    _In_ UINT uMsg,
    _In_ WPARAM wParam,
    _In_ LPARAM lParam
    )
{
    PMEMORY_EDITOR_CONTEXT context;

    if (uMsg != WM_INITDIALOG)
    {
        context = GetProp(hwndDlg, PhMakeContextAtom());
    }
    else
    {
        context = (PMEMORY_EDITOR_CONTEXT)lParam;
        SetProp(hwndDlg, PhMakeContextAtom(), (HANDLE)context);
    }

    if (!context)
        return FALSE;

    switch (uMsg)
    {
    case WM_INITDIALOG:
        {
            NTSTATUS status;

            SendMessage(hwndDlg, WM_SETICON, ICON_SMALL, (LPARAM)PH_LOAD_SHARED_ICON_SMALL(PhInstanceHandle, MAKEINTRESOURCE(IDI_PROCESSHACKER)));
            SendMessage(hwndDlg, WM_SETICON, ICON_BIG, (LPARAM)PH_LOAD_SHARED_ICON_LARGE(PhInstanceHandle, MAKEINTRESOURCE(IDI_PROCESSHACKER)));

            if (context->Title)
            {
                SetWindowText(hwndDlg, context->Title->Buffer);
            }
            else
            {
                PPH_PROCESS_ITEM processItem;

                if (processItem = PhReferenceProcessItem(context->ProcessId))
                {
                    SetWindowText(hwndDlg, PhaFormatString(L"%s (%u) (0x%Ix - 0x%Ix)",
                        processItem->ProcessName->Buffer, HandleToUlong(context->ProcessId),
                        context->BaseAddress, (ULONG_PTR)context->BaseAddress + context->RegionSize)->Buffer);
                    PhDereferenceObject(processItem);
                }
            }

            PhInitializeLayoutManager(&context->LayoutManager, hwndDlg);

            if (context->RegionSize > 1024 * 1024 * 1024) // 1 GB
            {
                PhShowError(context->OwnerHandle, L"Unable to edit the memory region because it is too large.");
                return TRUE;
            }

            if (!NT_SUCCESS(status = PhOpenProcess(
                &context->ProcessHandle,
                PROCESS_VM_READ,
                context->ProcessId
                )))
            {
                PhShowStatus(context->OwnerHandle, L"Unable to open the process", status, 0);
                return TRUE;
            }

            context->Buffer = PhAllocatePage(context->RegionSize, NULL);

            if (!context->Buffer)
            {
                PhShowError(context->OwnerHandle, L"Unable to allocate memory for the buffer.");
                return TRUE;
            }

            if (!NT_SUCCESS(status = NtReadVirtualMemory(
                context->ProcessHandle,
                context->BaseAddress,
                context->Buffer,
                context->RegionSize,
                NULL
                )))
            {
                PhShowStatus(context->OwnerHandle, L"Unable to read memory", status, 0);
                return TRUE;
            }

            PhAddLayoutItem(&context->LayoutManager, GetDlgItem(hwndDlg, IDOK), NULL,
                PH_ANCHOR_RIGHT | PH_ANCHOR_BOTTOM);
            PhAddLayoutItem(&context->LayoutManager, GetDlgItem(hwndDlg, IDC_SAVE), NULL,
                PH_ANCHOR_RIGHT | PH_ANCHOR_BOTTOM);
            PhAddLayoutItem(&context->LayoutManager, GetDlgItem(hwndDlg, IDC_BYTESPERROW), NULL,
                PH_ANCHOR_BOTTOM | PH_ANCHOR_LEFT);
            PhAddLayoutItem(&context->LayoutManager, GetDlgItem(hwndDlg, IDC_GOTO), NULL,
                PH_ANCHOR_BOTTOM | PH_ANCHOR_LEFT);
            PhAddLayoutItem(&context->LayoutManager, GetDlgItem(hwndDlg, IDC_WRITE), NULL,
                PH_ANCHOR_BOTTOM | PH_ANCHOR_LEFT);
            PhAddLayoutItem(&context->LayoutManager, GetDlgItem(hwndDlg, IDC_REREAD), NULL,
                PH_ANCHOR_BOTTOM | PH_ANCHOR_LEFT);

            if (MinimumSize.left == -1)
            {
                RECT rect;

                rect.left = 0;
                rect.top = 0;
                rect.right = 290;
                rect.bottom = 140;
                MapDialogRect(hwndDlg, &rect);
                MinimumSize = rect;
                MinimumSize.left = 0;
            }

            context->HexEditHandle = GetDlgItem(hwndDlg, IDC_MEMORY);
            PhAddLayoutItem(&context->LayoutManager, context->HexEditHandle, NULL, PH_ANCHOR_ALL);
            HexEdit_SetBuffer(context->HexEditHandle, context->Buffer, (ULONG)context->RegionSize);

            {
                PH_RECTANGLE windowRectangle;

                windowRectangle.Position = PhGetIntegerPairSetting(L"MemEditPosition");
                windowRectangle.Size = PhGetScalableIntegerPairSetting(L"MemEditSize", TRUE).Pair;
                PhAdjustRectangleToWorkingArea(NULL, &windowRectangle);

                MoveWindow(hwndDlg, windowRectangle.Left, windowRectangle.Top,
                    windowRectangle.Width, windowRectangle.Height, FALSE);

                // Implement cascading by saving an offsetted rectangle.
                windowRectangle.Left += 20;
                windowRectangle.Top += 20;

                PhSetIntegerPairSetting(L"MemEditPosition", windowRectangle.Position);
                PhSetScalableIntegerPairSetting2(L"MemEditSize", windowRectangle.Size);
            }

            {
                PWSTR bytesPerRowStrings[7];
                ULONG i;
                ULONG bytesPerRow;

                for (i = 0; i < sizeof(bytesPerRowStrings) / sizeof(PWSTR); i++)
                    bytesPerRowStrings[i] = PhaFormatString(L"%u bytes per row", 1 << (2 + i))->Buffer;

                PhAddComboBoxStrings(GetDlgItem(hwndDlg, IDC_BYTESPERROW),
                    bytesPerRowStrings, sizeof(bytesPerRowStrings) / sizeof(PWSTR));

                bytesPerRow = PhGetIntegerSetting(L"MemEditBytesPerRow");

                if (bytesPerRow >= 4)
                {
                    HexEdit_SetBytesPerRow(context->HexEditHandle, bytesPerRow);
                    PhSelectComboBoxString(GetDlgItem(hwndDlg, IDC_BYTESPERROW),
                        PhaFormatString(L"%u bytes per row", bytesPerRow)->Buffer, FALSE);
                }
            }

            context->LoadCompleted = TRUE;
        }
        break;
    case WM_DESTROY:
        {
            if (context->LoadCompleted)
            {
                PhSaveWindowPlacementToSetting(L"MemEditPosition", L"MemEditSize", hwndDlg);
                PhRemoveElementAvlTree(&PhMemoryEditorSet, &context->Links);
                PhUnregisterDialog(hwndDlg);
            }

            RemoveProp(hwndDlg, PhMakeContextAtom());

            PhDeleteLayoutManager(&context->LayoutManager);

            if (context->Buffer) PhFreePage(context->Buffer);
            if (context->ProcessHandle) NtClose(context->ProcessHandle);
            PhClearReference(&context->Title);

            if ((context->Flags & PH_MEMORY_EDITOR_UNMAP_VIEW_OF_SECTION) && context->ProcessId == NtCurrentProcessId())
                NtUnmapViewOfSection(NtCurrentProcess(), context->BaseAddress);

            PhFree(context);
        }
        break;
    case WM_SHOWWINDOW:
        {
            SendMessage(hwndDlg, WM_NEXTDLGCTL, (WPARAM)context->HexEditHandle, TRUE);
        }
        break;
    case WM_COMMAND:
        {
            switch (GET_WM_COMMAND_ID(wParam, lParam))
            {
            case IDCANCEL:
            case IDOK:
                DestroyWindow(hwndDlg);
                break;
            case IDC_SAVE:
                {
                    static PH_FILETYPE_FILTER filters[] =
                    {
                        { L"Binary files (*.bin)", L"*.bin" },
                        { L"All files (*.*)", L"*.*" }
                    };
                    PVOID fileDialog;
                    PPH_PROCESS_ITEM processItem;

                    fileDialog = PhCreateSaveFileDialog();

                    PhSetFileDialogFilter(fileDialog, filters, sizeof(filters) / sizeof(PH_FILETYPE_FILTER));

                    if (!context->Title && (processItem = PhReferenceProcessItem(context->ProcessId)))
                    {
                        PhSetFileDialogFileName(fileDialog,
                            PhaFormatString(L"%s_0x%Ix-0x%Ix.bin", processItem->ProcessName->Buffer,
                            context->BaseAddress, context->RegionSize)->Buffer);
                        PhDereferenceObject(processItem);
                    }
                    else
                    {
                        PhSetFileDialogFileName(fileDialog, L"Memory.bin");
                    }

                    if (PhShowFileDialog(hwndDlg, fileDialog))
                    {
                        NTSTATUS status;
                        PPH_STRING fileName;
                        PPH_FILE_STREAM fileStream;

                        fileName = PH_AUTO(PhGetFileDialogFileName(fileDialog));

                        if (NT_SUCCESS(status = PhCreateFileStream(
                            &fileStream,
                            fileName->Buffer,
                            FILE_GENERIC_WRITE,
                            FILE_SHARE_READ,
                            FILE_OVERWRITE_IF,
                            0
                            )))
                        {
                            status = PhWriteFileStream(fileStream, context->Buffer, (ULONG)context->RegionSize);
                            PhDereferenceObject(fileStream);
                        }

                        if (!NT_SUCCESS(status))
                            PhShowStatus(hwndDlg, L"Unable to create the file", status, 0);
                    }

                    PhFreeFileDialog(fileDialog);
                }
                break;
            case IDC_GOTO:
                {
                    PPH_STRING selectedChoice = NULL;

                    while (PhaChoiceDialog(
                        hwndDlg,
                        L"Go to Offset",
                        L"Enter an offset:",
                        NULL,
                        0,
                        NULL,
                        PH_CHOICE_DIALOG_USER_CHOICE,
                        &selectedChoice,
                        NULL,
                        L"MemEditGotoChoices"
                        ))
                    {
                        ULONG64 offset;

                        if (selectedChoice->Length == 0)
                            continue;

                        if (PhStringToInteger64(&selectedChoice->sr, 0, &offset))
                        {
                            if (offset >= context->RegionSize)
                            {
                                PhShowError(hwndDlg, L"The offset is too large.");
                                continue;
                            }

                            SendMessage(hwndDlg, WM_NEXTDLGCTL, (WPARAM)context->HexEditHandle, TRUE);
                            HexEdit_SetSel(context->HexEditHandle, (LONG)offset, (LONG)offset);
                            break;
                        }
                    }
                }
                break;
            case IDC_WRITE:
                {
                    NTSTATUS status;

                    if (!context->WriteAccess)
                    {
                        HANDLE processHandle;

                        if (!NT_SUCCESS(status = PhOpenProcess(
                            &processHandle,
                            PROCESS_VM_READ | PROCESS_VM_WRITE,
                            context->ProcessId
                            )))
                        {
                            PhShowStatus(hwndDlg, L"Unable to open the process", status, 0);
                            break;
                        }

                        if (context->ProcessHandle) NtClose(context->ProcessHandle);
                        context->ProcessHandle = processHandle;
                        context->WriteAccess = TRUE;
                    }

                    if (!NT_SUCCESS(status = NtWriteVirtualMemory(
                        context->ProcessHandle,
                        context->BaseAddress,
                        context->Buffer,
                        context->RegionSize,
                        NULL
                        )))
                    {
                        PhShowStatus(hwndDlg, L"Unable to write memory", status, 0);
                    }
                }
                break;
            case IDC_REREAD:
                {
                    NTSTATUS status;

                    if (!NT_SUCCESS(status = NtReadVirtualMemory(
                        context->ProcessHandle,
                        context->BaseAddress,
                        context->Buffer,
                        context->RegionSize,
                        NULL
                        )))
                    {
                        PhShowStatus(hwndDlg, L"Unable to read memory", status, 0);
                    }

                    InvalidateRect(context->HexEditHandle, NULL, TRUE);
                }
                break;
            case IDC_BYTESPERROW:
                if (HIWORD(wParam) == CBN_SELCHANGE)
                {
                    PPH_STRING bytesPerRowString = PhaGetDlgItemText(hwndDlg, IDC_BYTESPERROW);
                    PH_STRINGREF firstPart;
                    PH_STRINGREF secondPart;
                    ULONG64 bytesPerRow64;

                    if (PhSplitStringRefAtChar(&bytesPerRowString->sr, ' ', &firstPart, &secondPart))
                    {
                        if (PhStringToInteger64(&firstPart, 10, &bytesPerRow64))
                        {
                            PhSetIntegerSetting(L"MemEditBytesPerRow", (ULONG)bytesPerRow64);
                            HexEdit_SetBytesPerRow(context->HexEditHandle, (ULONG)bytesPerRow64);
                            SendMessage(hwndDlg, WM_NEXTDLGCTL, (WPARAM)context->HexEditHandle, TRUE);
                        }
                    }
                }
                break;
            }
        }
        break;
    case WM_SIZE:
        {
            PhLayoutManagerLayout(&context->LayoutManager);
        }
        break;
    case WM_SIZING:
        {
            PhResizingMinimumSize((PRECT)lParam, wParam, MinimumSize.right, MinimumSize.bottom);
        }
        break;
    case WM_PH_SELECT_OFFSET:
        {
            HexEdit_SetEditMode(context->HexEditHandle, EDIT_ASCII);
            HexEdit_SetSel(context->HexEditHandle, (ULONG)wParam, (ULONG)wParam + (ULONG)lParam);
        }
        break;
    }

    return FALSE;
}