Visual C++

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  • How to write in a new line in a file in MFC?
    by ketu0001
    4 Replies
    Last post by Viorel.
      • Hi All I want to write data in file using MFC Application. How to add newline character for this I want to write each record in seperate line. each record consist of product ID and Product Name. My Code is as below: void CProductDlg: nButWrite() { // TODO: Add your control notification handler code here CStdioFile fileObj; CFileException fileException; CFileStatus fileStatus; char* szF
  • The ParseDateTime will not work on some locale settings?
    by Jerry Ou
    0 Replies
    Last post by Jerry Ou
      • Hi All: I have encountered a problem in time date format when changing user's locale, The code snippets are below. COleDateTime DataTime; DataTime.ParseDateTime(strTime, LOCALE_NOUSEROVERRIDE); The strTime is a CString variable, It likes "11/10/2007" or "25/10/2007" ....(the format is %d/%m/%Y) Here is my testing environment. In my XP+sp2 en version OS. T
  • Getting the pivot (windowing) century.
    by Ryan McBeth
    1 Replies
    Last post by Aleksandr Tokarev
      • To all, I need to get the pivot date for a two-digit year from the Regional options that are found under: Control Panel > Regional and Language Options > Customize > Date > Calendar. This is the value which will switch a two digit date to this century of last century basde on the two digit date. There doesn't seem to be an LCTYPE for getting that date under Ge
  • Detecting subfolder names
    by Celios
    2 Replies
    Last post by Celios
      • Hi. I am trying to detect subfolder names inside directories. Inside a directory, I used FindFirstFile and FindNextFile and they can detect the subfolders, but the WIN32_FIND_DATA's cFileName does not give me the names of the subfolders. How do I do this Thanks, Celios
  • How to extract flags from long value
    by Koray Samsun
    3 Replies
    Last post by Koray Samsun
      • Hi, i have an unsigned long value like 33557968 and want to extract set of flags (17 flags). How can i do that
  • getting current user name
    by cadouthat
    5 Replies
    Last post by Anonymous
      • how can i get the name of the current user - is it in the registry is there a function i want to do this in case i want to put something on the desktop or in my documents ect. thanks in advance
  • wlanapi.dll
    by ReinerZ
    3 Replies
    Last post by Nelson
      • Hi all, I'd want to use the new WLAN-API's, described in the latest Platform SDK (wlanapi.h). I think this API is new to Windows Vista, but have found another thread in this forums, that points out that there is a version of WLANAPI.DLL, that is capable of running on XP SP2. Does anybody know, where I can get this DLL Or is there any other chance, to work with 802.11-networks on pre Vista-s
  • Warning C4482 - Enums
    by Steve Jackson
    6 Replies
    Last post by xpnctoc
      • Maybe this isn't the correct forum, perhaps if I ask the question this way. Is there anything wrong with the way I am using the enum below FigureNames is simply an enum {jack, jill, etc..}. When compiling, it get the following warning; Warning 2 warning C4482: nonstandard extension used: enum 'Names' used in qualified name c:\Documents and Settings\Steve Jackson\My Documents\MySchool\C++\A
  • Icons in Solution Explorer
    by Thomas2054
    11 Replies
    Last post by Nishant Sivakumar
      • What does an inverse minus sign (small filled red circle with white '-' sign in it) next to a file in the Solution Explorer mean I would have included a jpg screen shot, but there does not appear to be a way to do that in this forum. More broadly speaking, where do I find icon definitions for the Solution Explorer and other parts of VS 2005 I am using VC++ 2005 Express. Thoma
  • StoragePortClassGuid: What is it and where can I get one?
    by DevanL
    3 Replies
    Last post by DevanL
      • consider the following: //Get list of all storage drivers hIntDevInfo = SetupDiGetClassDevs ( (LPGUID)&StoragePortClassGuid, NULL, //pDevId, // Enumerator NULL, // Parent Window (DIGCF_PRESENT | DIGCF_INTERFACEDEVICE // Only Devices present & Interface class )); notice the use of StoragePortClassGuid in the call tolimit the results for hIntDevInfo. My problem is I am trying
  • USA Daylight Savings Time (DST) Update - Yes updated but poorly
    by Damien Watkins - MSFT
    8 Replies
    Last post by crescens2k
      • Starting from March 2007, the Daylight Savings Time (DST) start date and end date for the United States will change. DST will start at 2:00 A.M. on the second Sunday in March and end at 2:00 A.M on the first Sunday in November. The C Run-Time (CRT) performs its own time handling only when the TZ environment variable is set, or when an underlying OS API time call fails. If the TZ envir
  • cannot find afxres.h
    by Brock Rogers
    2 Replies
    Last post by Brock Rogers
      • I'm using MS Visual Studio.NET version 7.0.9466 and .NET framewok 1.0. Whenever I try to add a class I get "fatal error RC1015: cannot open include file 'afxres.h'. I have verified that my include directories contain the location to that file but it's not recognizing it. I went into the registry and the vs install directory was pointing to C:\program files\blahblah\common7\ide\ ... I changed
  • BSTR Strings
    by Hooper
    7 Replies
    Last post by Simple Samples
      • Hi, I have an xml app where I am reading in the file and moving through the nodes, types. I would like to print these items, elements, text, values, out to the console. But when I do, std::cout << bstrValue; I just get what must be maybe an address. Steping through in the debugger I can see the address and text, but I would like to print out the value for now. And probab
  • Compiler selecting template function in error?
    by Simulacrum
    7 Replies
    Last post by Brian Kramer
      • class A { ... A operator =(A &rhs); A template<typename T> operator =(const T &rhs); A operator -(A &rhs); } int main(void) { A number; A otherNumber; A result; number="123"; //calls templated operator = as expected otherNumber="321"; //calls templated operator = as expected result=number - otherNumber; //calls
  • Multithreading Best Practice -Queueing
    by A.Russell
    14 Replies
    Last post by A.Russell
      • I have set up a thead that loops until it receives some data before processing it. It works well enough, however it uses a lot of CPU just while it isn't doing anything. What is the best way to deal with this situation Code Snippet //keep thread running all all the time while(true) { //wait for there to be work in the queue workQueueMutex->WaitOne(); try
  • import txt, separate line with space, in string
    by futurechromex3x
    3 Replies
    Last post by futurechromex3x
      • im trying to import a txt document into my program and each line contains 1 word when i load it one way it only loads the last line(espionage), if i do it the other way it loads all the words unseparated(applebaseballcomputerdriveespionage). so how do i load the list and each word separated by spaces here is the text file "apple baseball computer drive espionage" here is the code to onl
  • Why do I get "The transaction has already been implicitly or explicitly committed or aborted"?
    by hdp203
    6 Replies
    Last post by cacosta
      • Without using TransactionScope the code runs fine.  With ts, the exception is throwed when I call Update(). Below is my code in C++: try {    Transactions::TransactionScope^ ts = gcnew Transactions::TransactionScope();    SavePatient(hPatient, hProgress);    ts->Complete(); } catch (Exception^ e) {    MessageBox::Show
  • fscanf won't read past first character
    by &amp;#42;Cole&amp;#42;
    8 Replies
    Last post by Marius Bancila
      • I am trying to read from a file using fscanf and it won't read past the first character. I was wondering if anybody could tell me why Here is the code, I pass the file many times to different parts of the program, perhaps I'm doing this wrong Code Snippet #include <stdio.h> #include <cstdlib> #include "Rational.h" using namespace std; //funtions void getConstrai
  • Slider controls
    by Andrew Ellis
    3 Replies
    Last post by Andrew Ellis
      • Hi, I have created an application in which I have 3 slider controls. I can dectect when any othe the sliders controls is moving by detecting the WM_HScroll message. My question is how can I detect which one of the slider controls has been moved Thanks Andrew Ellis
  • bug in arithmetic conversion?
    by eric.slosser
    14 Replies
    Last post by eric.slosser
      • I've found what I think is a bug in how the C compiler treats binary operators when the operands are of different types. According the rules of 'standard arithmetic conversion', if one operand is a "float" and one is an "int", I would expect the operation to be performed with 'float' precision. The following code illustrates the bug. Following was typed into a ne
  • A compiing error about template
    by AILAB
    8 Replies
    Last post by AILAB
      • Dear Expert: I use visual studio 2005 to compile NeuroLib ( http://www.ia.unc.edu/dev/ ), and there are a lot of error like the following: ---------- e:\unc_proj\lib\neurolib\libraries\datatypes\Vector2D.txx(33) : error C2244: 'Vector2D<T>::{ctor}' : unable to match function definition to an existing declaration 3> definition 3> 'Vector2D<T>::Vector2D(const Ve
  • Upgrading from Microsoft Visual C++ 6.0
    by Humots
    3 Replies
    Last post by Bite Qiu - MSFT
      • I would like to upgrade to Microsoft Visual Studio 2005. I currently have Visual C++ 6.0. Does Visual C++ 6.0 qualify as an upgrade for the Microsoft Visual Studio Standard 2005 Upgrade, or do I have to buy the whole package Thanks.
  • 1st TIME USER, please help me to install the STK in Visual Studio 2005
    by sneakBeats
    4 Replies
    Last post by Damien Watkins - MSFT
      • Hello everyone, sorry if this is a stupid question, but I'm VERY new to this. Have been bumbling through C++ at uni (it's a module on my Sound Tech course) but now it's Xmas holidays and there are no tutors to pester! I've managed to get hold of Visual Studio 2005 and I need to know how to get the STK file working with it. My plan is to build a very simple interface that allows the user to m
  • fatal error C1083: on relese only
    by -anthrax-
    9 Replies
    Last post by -anthrax-
      • hi guys, I have a VC++ project which i have downloaded as a sample code which was originally written in VC++ 7.1. I'm using the evaluation copy of Visual Studio 2005 professional, whchi is still on evaluation perioud. there was no problems in converting it in to VC++ 8 (2005) and also when running in debugging mode. it works perfectly fine. as soon as i run it in relese mode i
  • 'View' contents get lost
    by sud_avr
    8 Replies
    Last post by Simple Samples
      • Hi all, I am newbie to all this. This is what I am trying to do by creating n MFC application. Display a window with a view. Write some text to the view. But each time I minimize the window and restore it, I see that my view contents are lost. I tried using the functions UpdateWindow() and Invalidate() on the view. This is a function associated with the message map of my view. LRESULT CTe