Null dc

Author: m | 2025-04-25

ok guys im back with a very long vid showing the rite way to make null dc online for null dc full package and biosnow when download Use GetDC(NULL); to get a DC for the entire screen. Use CreateCompatibleDC to create a DC compatible with the screen DC. Use CreateCompatibleBitmap to create a bitmap

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When recreating the window (see the window_procedure function) */HMODULE gl_module;bool quit = false;/* OpenGL function declarations. In practice, we would put these in a separate header file and add "extern" in front, so that we can use them anywhere after loading them only once. */PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB;PFNWGLCHOOSEPIXELFORMATARBPROC wglChoosePixelFormatARB;PFNWGLCREATECONTEXTATTRIBSARBPROC wglCreateContextAttribsARB;PFNGLGETSTRINGPROC glGetString;int WINAPI WinMain(HINSTANCE instance_handle, HINSTANCE prev_instance_handle, PSTR cmd_line, int cmd_show) { /* REGISTER WINDOW */ WNDCLASS window_class; // Clear all structure fields to zero first ZeroMemory(&window_class, sizeof(window_class)); // Define fields we need (others will be zero) window_class.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC; window_class.lpfnWndProc = window_procedure; window_class.hInstance = instance_handle; window_class.lpszClassName = TEXT("OPENGL_WINDOW"); // Give our class to Windows RegisterClass(&window_class); /* *************** */ /* CREATE WINDOW */ HWND window_handle = CreateWindowEx(WS_EX_OVERLAPPEDWINDOW, TEXT("OPENGL_WINDOW"), TEXT("OpenGL window"), WS_OVERLAPPEDWINDOW, 0, 0, 800, 600, NULL, NULL, instance_handle, NULL); HDC dc = GetDC(window_handle); ShowWindow(window_handle, SW_SHOW); /* ************* */ /* PIXEL FORMAT */ PIXELFORMATDESCRIPTOR descriptor; // Clear all structure fields to zero first ZeroMemory(&descriptor, sizeof(descriptor)); // Describe our pixel format descriptor.nSize = sizeof(descriptor); descriptor.nVersion = 1; descriptor.dwFlags = PFD_DRAW_TO_WINDOW | PFD_DRAW_TO_BITMAP | PFD_SUPPORT_OPENGL | PFD_GENERIC_ACCELERATED | PFD_DOUBLEBUFFER | PFD_SWAP_LAYER_BUFFERS; descriptor.iPixelType = PFD_TYPE_RGBA; descriptor.cColorBits = 32; descriptor.cRedBits = 8; descriptor.cGreenBits = 8; descriptor.cBlueBits = 8; descriptor.cAlphaBits = 8; descriptor.cDepthBits = 32; descriptor.cStencilBits = 8; // Ask for a similar supported format and set it int pixel_format = ChoosePixelFormat(dc, &descriptor); SetPixelFormat(dc, pixel_format, &descriptor); /* *********************** */ /* RENDERING CONTEXT */ HGLRC rc = wglCreateContext(dc); wglMakeCurrent(dc, rc); /* ***************** */ /* LOAD FUNCTIONS (should probably be put in a separate procedure) */ gl_module = LoadLibrary(TEXT("opengl32.dll")); wglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)get_proc("wglGetExtensionsStringARB"); wglChoosePixelFormatARB = (PFNWGLCHOOSEPIXELFORMATARBPROC)get_proc("wglChoosePixelFormatARB"); wglCreateContextAttribsARB = (PFNWGLCREATECONTEXTATTRIBSARBPROC)get_proc("wglCreateContextAttribsARB"); glGetString = (PFNGLGETSTRINGPROC)get_proc("glGetString"); FreeLibrary(gl_module); /* ************** */ /* PRINT VERSION */ const GLubyte *version = glGetString(GL_VERSION); printf("%s\n", version); fflush(stdout); /* ******* */ /* NEW PIXEL FORMAT*/ int pixel_format_arb; UINT pixel_formats_found; int pixel_attributes[] = { WGL_SUPPORT_OPENGL_ARB, 1, WGL_DRAW_TO_WINDOW_ARB, 1, WGL_DRAW_TO_BITMAP_ARB, 1, WGL_DOUBLE_BUFFER_ARB, 1, WGL_SWAP_LAYER_BUFFERS_ARB, 1, WGL_COLOR_BITS_ARB, 32, WGL_RED_BITS_ARB, 8, WGL_GREEN_BITS_ARB, 8, WGL_BLUE_BITS_ARB, 8, WGL_ALPHA_BITS_ARB, 8, WGL_DEPTH_BITS_ARB, 32, WGL_STENCIL_BITS_ARB, 8, WGL_ACCELERATION_ARB, WGL_FULL_ACCELERATION_ARB, WGL_PIXEL_TYPE_ARB, WGL_TYPE_RGBA_ARB, 0 }; BOOL result = wglChoosePixelFormatARB(dc, pixel_attributes, NULL, 1, &pixel_format_arb, &pixel_formats_found); if (!result) { printf("Could not find pixel format\n"); fflush(stdout); return 0; } /* **************** */ /* RECREATE WINDOW */ wglMakeCurrent(dc, NULL); wglDeleteContext(rc); ReleaseDC(window_handle, dc); DestroyWindow(window_handle); window_handle = CreateWindowEx(WS_EX_OVERLAPPEDWINDOW, TEXT("OPENGL_WINDOW"), TEXT("OpenGL window"), WS_OVERLAPPEDWINDOW, 0, 0, 800, 600, NULL, NULL, instance_handle, NULL); dc = GetDC(window_handle); ShowWindow(window_handle, SW_SHOW); /* *************** */ /* NEW CONTEXT */ GLint context_attributes[] = { WGL_CONTEXT_MAJOR_VERSION_ARB, 3, WGL_CONTEXT_MINOR_VERSION_ARB, 3, WGL_CONTEXT_PROFILE_MASK_ARB, WGL_CONTEXT_CORE_PROFILE_BIT_ARB, 0 }; rc = wglCreateContextAttribsARB(dc, 0, context_attributes); wglMakeCurrent(dc, rc); /* *********** */ /* EVENT PUMP */ MSG msg; while (true) { if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { if (msg.message == WM_QUIT) break; TranslateMessage(&msg); DispatchMessage(&msg); } // draw(); Compiled with g++ GLExample.cpp -lopengl32 -lgdi32 with MinGW/Cygwin or cl GLExample.cpp opengl32.lib gdi32.lib user32.lib with MSVC compiler. Make sure however, that the headers from the OpenGL registry are in the include path. If not, use -I flag for g++ or /I for cl in order to tell the compiler where they are. Obtaining OpenGLOne of the most common misconceptions about OpenGL is, that it were a library that could be installed from 3rd party sources. This misconception leads to many questions in the form "how to I install OpenGL" or "where to download the OpenGL SDK".This is not how OpenGL finds the way into computer system. OpenGL by itself is merely a set of specifications on what commands an implementation must follow. So it's the implementation that matters. And for the time being, OpenGL implementations are part of the GPU drivers. This might change in the future, when new GPU programming interface allow to truly implement OpenGL as a library, but for now it's a programming API towards the graphics drivers.When OpenGL got first released the API somehow found its way into the ABI (Application Binary Interface) contract of Windows, Solaris and Linux (LSB-4 Desktop) in addition to it's origin Sun Irix. Apple followed and in fact integrated OpenGL so deep into MacOS X, that the OpenGL version available is tightly coupled to the version of MacOS X installed. This has the notable effect, that system programming environments for these operating systems (i.e. the compiler and linker toolchain that natively targets these systems) must deliver also OpenGL API definitions. Such it is not necessary to actually

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1.1. That is a very old version (most recent one is 4.5). The way to get the most recent versions is to update your graphics drivers, but your graphics card must support those new versions.Full list of WGL functions can be found here.Graphics device interface (GDI)GDI (today updated to GDI+) is a 2D drawing interface that allows you to draw onto a window in Windows. You need GDI to initialize OpenGL and allow it to interact with it (but will not actually use GDI itself).In GDI, each window has a device context (DC) that is used to identify the drawing target when calling functions (you pass it as a parameter). However, OpenGL uses its own rendering context (RC). So, DC will be used to create RC.Basic setupCreating a windowSo for doing things in OpenGL, we need RC, and to get RC, we need DC, and to get DC we need a window. Creating a window using the Windows API requires several steps. This is a basic routine, so for a more detailed explanation, you should consult other documentation, because this is not about using the Windows API.This is a Windows setup, so Windows.h must be included, and the entry point of the program must be WinMain procedure with its parameters. The program also needs to be linked to opengl32.dll and to gdi32.dll (regardless of whether you are on 64 or 32 bit system).First we need to describe our window using the WNDCLASS structure. It contains information about the window we want to create:/* REGISTER WINDOW */WNDCLASS window_class;// Clear all structure fields to zero firstZeroMemory(&window_class, sizeof(window_class));// Define fields we need (others will be zero)window_class.style = CS_OWNDC;window_class.lpfnWndProc = window_procedure; // To be introduced laterwindow_class.hInstance = instance_handle;window_class.lpszClassName = TEXT("OPENGL_WINDOW");// Give our class to WindowsRegisterClass(&window_class);/* *************** */ For a precise explanation of the meaning of each field (and for a full list of fields), consult MSDN documenation.Then, we can create a window using CreateWindowEx . After the window is created, we can acquire its DC:/* CREATE WINDOW */HWND window_handle = CreateWindowEx(WS_EX_OVERLAPPEDWINDOW, TEXT("OPENGL_WINDOW"), TEXT("OpenGL window"), WS_OVERLAPPEDWINDOW, 0, 0, 800, 600, NULL, NULL, instance_handle, NULL);HDC dc. ok guys im back with a very long vid showing the rite way to make null dc online for null dc full package and biosnow when download Use GetDC(NULL); to get a DC for the entire screen. Use CreateCompatibleDC to create a DC compatible with the screen DC. Use CreateCompatibleBitmap to create a bitmap

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It.The FRS member object may be missing. This is an error.DEFAULT-FIRST-SITE-NAME\DC1Repairing the null Server-Reference attributesYou can use LDP.exe or ADSIedit.msc to repair missing Server-Reference attributes. These tools allow you to repair the attributes by resetting them to match the distinguished name (DN) of the server's NTDS settings object. To repair null Server-Reference attributes, follow these steps:Use one of the following methods to locate the DN path of the NTDS Settings object for the computer that has the missing (null) Server-Reference attribute:In LDP or ADSIedit, copy the DN path of the NTDS Settings object from the Configuration container in the root domain of the forest to Clipboard.-or-From the domain partition of Active Directory, copy the value of the Server-Reference attribute from a healthy domain controller to Clipboard. This domain controller needs to be in the same Active Directory domain and site as the broken computer, otherwise you have to edit the DN path.Locate the member object that has the null Server-Reference attribute:Start ADSIedit. In the Domain partition of Active Directory, locate the member object (nTFRSMember) that lacks the settings reference. The DN path is:Right-click the member object that has the null Server-Reference attribute, and then click Properties.Edit the value for the Server-Reference attribute:Configure the Attributes tab in ADSIedit:Select which properties to view: Set it to OPTIONAL.Select a property to view: Click the Server-Reference property.Under Edit Attribute, paste the DN path of the NTDS Settings object from Clipboard. The DN path for an NTDS Setting should have the following formatCN=NTDS Settings, CN= Computer name,CN= Site name, CN=Sites, CN=Configuration, DC= Root domain of forest,DC=COMwhere Computer name is the name of the domain controller with the null Server-Reference attribute and whereSite name is the name of the Active Directory site where that server's NTDS Settings object lives.Click SET, and then confirm the value that Var result = await client.GetStringAsync(new Uri(feedUrl)); // If no result, throw an exception if (result == null) { throw new InvalidOperationException( "The specified URL returned a null result"); } else { // LINQ to XML: Convert the returned string into an XDocument object var doc = XDocument.Parse(result); var dc = XNamespace.Get(" // Execute a LINQ query over the XML document // and return a collection of FeedItem objects var query = (from entry in doc.Descendants("item") select new FeedItem { Title = entry.Element("title").Value, Link = new Uri(entry.Element("link").Value), Author = entry.Element(dc + "creator").Value, Description = entry.Element("description").Value, PubDate = DateTimeOffset.Parse( entry.Element("pubDate").Value, System.Globalization.CultureInfo.InvariantCulture) }); return query; } } }}Figure 2 Implementing a Class to Retrieve Common Items from an RSS Feed in Visual BasicImports System.Net.HttpImports 'Represent a single content in the RSS feedPublic Class FeedItem 'Properties representing information 'which is common to any RSS feed Public Property Title As String = String.Empty Public Property Author As String = String.Empty Public Property Description As String = String.Empty Public Property PubDate As DateTimeOffset Public Property Link As Uri 'Return a collection of FeedItem objects from a RSS feed Public Shared Async Function ParseFeedAsync(feedUrl As String) As _ Task(Of IEnumerable(Of FeedItem)) Dim client As New HttpClient 'Download the feed content as a string Dim result = Await client.GetStringAsync(New Uri(feedUrl, UriKind.Absolute)) 'If no result, throw an exception If result Is Nothing Then Throw New InvalidOperationException( "The specified URL returned a null result") Else 'LINQ to XML: Convert the returned string 'into an XDocument object Dim document = XDocument.Parse(result)

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Share via We are currently in a hybrid Exchange/365 environment. We need to find out who doesn't have photos attached to their accounts. Unfortunately the scripts I'm using are indicating people don't have photos that do in fact have them, so I'm not getting anywhere. First I tried this script against my local AD: get-aduser -searchbase 'OU=Users,DC=mydomain,DC=local' -Filter {(Enabled -eq $true)} | Where {$_.thumbnailPhoto -eq $NULL} This output every user in the OU. Picking a user I knew had a photo (like myself) I exported all of the attributes of the user and there was no thumbnailPhoto attribute. There was however a jpegPhoto attribute, but changing the query to look for jpegPhoto -eq $NULL returned no results at all. So then I found a script to run against Exchange Online. I connected to it via Powershell and ran the following: get-mailbox -resultsize Unlimited -RecipientTypeDetails Usermailbox | Where {$_.HasPicture -eq $false} | Select-Object DisplayName,UserPrincipalName,HasPictureAgain, this output everybody, including myself (who definitely has a picture). What am I missing here?

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Can use LDP and ADSIedit to recover individual objects by using the same procedure that is described in the "Fixing Null Server-Reference Attributes" section; however, in this scenario, the procedure occurs on a larger scale.Detecting missing FRS member objectsYou can detect missing FRS member objects with the following tools:Use the ntfrsutl sets command-line output, and then parse it with the PERL script TOPCHK:S E R V E R S M I S S I N G I N B O U N D C O N N E C T I O N SThe following FRS member servers have outbound replication partners but no inbound connection objects. There could be several reasons for this:There are no connection objects under the NTDS Settings object for this server. This is an error.The ServerReference Attribute for this server is null. This is an error.This server could be in a different domain so there will be no FRS member object for it.The FRS member object may be missing. This is an error.DEFAULT-FIRST-SITE-NAME\DC1The output of the ntfrsutl sets command:NoteThere are no outbound connections in the following output.Recovering deleted FRS replica setsYou can recover deleted FRS replica sets by re-creating them or by restoring the system state.To re-create the SYSVOL replica by using ADSIEDIT, follow these steps:NotePay extra attention to avoid typos as you add object and attribute names and values into ADSIedit. If there is a DC in your Active Directory environment that did not replicate the accidental deletion of the Replica Set (for example, the DC was offline, was not connected to the network, or the replication schedule was not opened) you can use LDP.exe or ADSIedit to copy the values from that DC and paste them into ADSIedit on the "recovery" DC where you want to re-create the Replica Set objects. You can. ok guys im back with a very long vid showing the rite way to make null dc online for null dc full package and biosnow when download

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Skip to main content This browser is no longer supported. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. HMONITOR and the Device Context Article01/07/2021 In this article -->Each physical display is represented by a monitor handle of type HMONITOR. A valid HMONITOR is guaranteed to be non-NULL. A physical display has the same HMONITOR as long as it is part of the desktop. When a WM_DISPLAYCHANGE message is sent, any monitor may be removed from the desktop and thus its HMONITOR becomes invalid or has its settings changed. Therefore, an application should check whether all HMONITORS are valid when this message is sent.Any function that returns a display device context (DC) normally returns a DC for the primary monitor. To obtain the DC for another monitor, use the EnumDisplayMonitors function. Or, you can use the device name from the GetMonitorInfo function to create a DC with CreateDC. However, if the function, such as GetWindowDC or BeginPaint, gets a DC for a window that spans more than one display, the DC will also span the two displays. --> Feedback Additional resources In this article