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Microsoft Visual C & C++ Hot Answers

ZwReadFile() always fail ..why?
//Please help me to fix itThanksbelow is my codes//#define DEFAULT_LOG_FILE_NAME L"\\??\\C:\\image.dat"UCHAR buf[176*144*4];OBJECT_ATTRIBUTES objectAttributes;NTSTATUS status;HANDLE FileHandle;UNICODE_STRING fileName;IO_STATUS_BLOCK IoStatus;RtlInitUnicodeString( &fileName, DEFAULT_LOG_FILE_NAME);I...
ZwQuerySystemInformation: buffer size
Hi. How can I know beforehand the buffer size (or the number of processes) used in ZwQuerySystemInformation function? I use SYSTEM_PROCESS_INFORMATION as enum value of the SystemInformationClass parameter. Thanks in advance.Ciao guagliò! ...
ZwCreateFile problem
Hi, this is my first post over here.Well, I have a problem with ZwCreateFile, it just don't work. This is my code:#include <ntddk.h>#include <reg.h>#include <tcp.h>#include <file.h>#include <proc.h>VOID OnUnload( IN PDRIVER_OBJECT DriverObject ){}VOID DoSignature(...
ZwCreateFile does not Succeed at all?
Hi GurusI am using ZwCreateFile to open my PhysicalDrive0 from the Filter driver that i have written.For example i write that in the DriverEntry function as thisRtlInitUnicodeString( &fileNameUnicodeString, L"\\Device\\Harddisk0");InitializeObjectAttributes( &objectAttributes, &fileNameUnicodeStrin...
z-sorted quadtrees.
Hi, I'm writing a mapping program that is basically a big plane of polygons and lines.In order to render view of the plane in a reasonable time (it could be a very sparse plane with only parts of the map loaded) I am planning to use a quadtree or some similar spatial indexing scheme.However! Th...
Z-ordering of an SDI application with modeless CDialog
Hello, I have some modeless CDialogs in my application. My main window is a SDI application (CFormView in a CFrame) My problem is that my CDialog that are not modeless are always on top of my main window, I tried to create them with NULL as parent or CWnd::GetDesktopWindow() but it does not seem...

Microsoft Visual C & C++ New questions

event id 7016
Does anyone know what event id 7016 really is?...
Event IConnectionPoint
Hello,I have a dll ATL/COM that using ConnectionPoint. I add an event, but this event work just one time after I have an error message:"The object is not connected to the serveur"Thanks for your helpSanoukPS: My Fire MethodLock(); HRESULT hr = S_OK; for( int i = 0; i < m_nStreamIndex; i++ )...
Event Handling Mechanism in Windows
I have posted this question to other groups. But did not find an answer. Here's the question. Any thoughts on this is highly appreciated. =================================================================== Hi, I have some doubts regarding the event handling process in Windows. I referred ma...
event handling keywords
Hi,the event_source, __raise, __event etc, keywords used to catch and raise events in c++, are they part of standard c++ and available in all major c++ compilers or are they microsoft specific?Ab....
Event Handling incompatible with precompiled header !
I have made this very easy test with both VC7 and VC8, and I got unrecorevable errors. Did you ever tested this ? Know a workaround ? Regards, jean Davy In native C++ here is stdafx.h #pragma once #include <iostream> #include <tchar.h> [ event_source( native, optimize = speed, decora...
event handling in treeview control
My application was working fine in VC++ 5.0 Windows 95 machine. I have ported the application to VC++ 6.0 Windows NT machine. My application has tree control. In VC++ 6.0 Windows NT machine, it is not handling the following eventsOnBeginLabelEditOnEndLabelEditOnSelChangedWhereas events like OnClick,...

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