tcp socket

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  - 1
    - ToTitleCase I am converting some code to work in windows and I came across a function called ToTitleCase(). Is there a win32 equivalent to this? I found a ToUpper & ToLower but no ToTitle. Thanks Bob Tag: tcp socket Tag: 266699
  - 2
    - CXX0030: Error: expression cannot be evaluated when connecting to SQL server Hi all, I try to connect to a SQL database and get a 'CXX0030: Error: expression cannot be evaluated' due to the connection->Open function. The connection string was verified and therefore should work. I have no real idea where the problem is situated... I hope someone can help me out. Thanks in advance. Stijn try { m_hr = connection.CreateInstance(__uuidof(ADODB::Connection)); connection->CursorLocation = ADODB::adUseClient; connection->Open(L"Provider=SQLOLEDB.1;Integrated Security=SSPI;Initial Catalog=testing;Data Source=.",L"", L"", ADODB::adConnectUnspecified); } catch (_com_error &e) { e.Description(); } Tag: tcp socket Tag: 266698
  - 3
    - pixel decimation Hi all, How to do decimation. For example, I have a line of image pixel 2500. My screen resolution is 1280 by 1024. If i want the image to be displayed without a scroll bar in the bottom, How should i print the pixels on screen. any help would be great. Thanks, -thiru Tag: tcp socket Tag: 266694
  - 4
    - Creating a unique path separator Hi, If i have a tree structure, where the names can have ANY character in them, what would be the best method for finding a 'unique series of characters' to use as a separator when writing a path to an XML file? For instance, the structure could look like this: !"=A3$%^&*()_+1234567890- QWERTYUIOP{}qwertyuiop[] ASDFGHJKL:@~asdfghjkl;'# |ZXCVBNM<>?\zxcvbnm,./`=AC then im stuck for using a single character (lets pretend that all the extended characters have been used aswell - it could happen ... and probably will when i least want it to), so i have to use two characters for the separator. But of course, all the two character combinations could have been used up aswell in a gargantuan super path! So i would need to use three (or more - getting more and more unlikely, i know). All good suggestees will have a planet named after them, James. Tag: tcp socket Tag: 266688
  - 5
    - peculiar error, res.dll missing I have migrated one project from VC++ 6.0 to .NET2003(managed C++). I have modified the required code according to the .NET libraries. It is executing fine in both Debug mode as well as release mode.The name of the project is ardtd. The problem is while running the application(not from IDE). I put the exe and all the dlls required for that application. If i click on the exe file, it is supposed to execute fine but It says ardtdres.dll not found. I'm getting this error on the systems where .NET is not installed even though .NET framework is installed. If .NET is installed on the machine I'm not getting this error. Please let me know if you have any idea about this problem, Thank you in advance Tag: tcp socket Tag: 266685
  - 6
    - Newbie adding COM components to a project Hi, I am an experienced java and VB6 developer and had about 2 years experience of C++ about 8 years ago (but on UNIX). I have a COM object that I have used a lot in the VB6 environment by simply adding it to the references. I am then able to refer to the objects easily and intellisense works great. I am trying to write some code in C++ but I am having problems adding the COM object to the project. I do not know where to begin. I have access to the dll and to the tlb. Is there an easy way to do this? I am currently using Visual Studio 2005 Express but may be able to get my hands on the full VS 2005 environment. Any help really appreciated. Thanks David Tag: tcp socket Tag: 266684
  - 7
    - red exclamation mark icon Hi, Where I can find "red exclamation mark" icon, I was looking for this in few dll's but failed? m. Tag: tcp socket Tag: 266681
  - 8
    - error LNK2022: metadata operation failed - using Templates? I've seen several previous posts related to LNK2022 errors using templates, but I have not seen a resolution (one other person said the error goes away if he does not make his class a template, but that's not a preferred solution for me, as it wasn't for him) . I have a template LinkedList class that I can use successfully within the .Net form.h file, but if I try to access it from within another class (only in that class, no longer in the form) it compiles fine but then I get two link errors: City.obj : error LNK2022: metadata operation failed (80131187) : Inconsistent method declarations in duplicated types (types: node; methods: .ctor): (0x06000003). City.obj : error LNK2022: metadata operation failed (801311D6) : Differing number of methods in duplicated types (node): (0x02000004). I've commented out most of the lines of code so I know that this error occurs when I include a method call from with the City object to the linked list method insertAtHead. The linkedlist class (reduced for this example) is: #pragma once template <typename Item> ref class LinkedList { private: ref class node { public: node() { data = Item(); link=nullptr; } node(const Item% init_data, node ^init_link) { data = init_data; link = init_link; } Item data; node ^link; }; public: typedef node ^NodePtr; LinkedList(void); void insertAtHead(const value_type% entry); private: NodePtr head; }; and in the cpp file: template <typename Item> LinkedList<Item>::LinkedList(void) { head = nullptr; } template <typename Item> void LinkedList<Item>::insertAtHead(const Item% entry) { head = gcnew node(entry, head); } In the City class, I have: #pragma once #include "LinkedList.cpp" ref class City { public: City(System::String^ cityName); void addDest(City^ dest); private: System::String^ name; LinkedList<City^> destList; }; and in the City.cpp file: void City::addDest(City^ dest) { destList.insertAtHead(dest); } If I comment out destList.insertAtHead(dest); I no longer get the linker errors. As stated above, the LinkedList files (unmodified) work if I put the declaration of the linked list and calls to insertAtHead in my Form1.h file. Why should it make a difference if they are in my City class instead? Any suggestions would be greatly appreciated! cyndi Tag: tcp socket Tag: 266678
  - 9
    - dllregisterserver not registering com classes I have a COM DLL (created with the ATL COM wizard). It comes with the function: // DllRegisterServer - Adds entries to the system registry STDAPI DllRegisterServer(void) { // registers object, typelib and all interfaces in typelib HRESULT hr = _AtlModule.DllRegisterServer(); return hr; } This function does get called when the object is registered, but none of the interfaces I have defined get registered. Do I need to put code in to manually register my objects? What does that function register, then? Thanks, -PaulH Tag: tcp socket Tag: 266671
  - 10
    - Making Type Library for normal Windows DLL (not a COM server) I read this artical and tried to create tlb for my C++ class. import "oaidl.idl"; import "ocidl.idl"; [ uuid(634FE8B5-C847-4b25-B135-B39312741EDE) ] library Vdll_1Lib { importlib("stdole2.tlb"); [ dllname("Vdll_1.dll") ] module Vdll_1Mod { //[entry(1)] void Calculate_1(void); [ entry("Calculate_1") ] void Calculate_1 (void); } }; ---------- LIBRARY "Vdll_1.dll" EXPORTS Calculate_1 ------ #import "C:\Test\Vdll_1\Debug\Vdll_1.tlb" I am getting linking problems . ClientClass.obj : error LNK2019: unresolved external symbol "void __stdcall Vdll_1Lib::Calculate_1(void)" (?Calculate_1@Vdll_1Lib@@YGXXZ) referenced in function "public: virtual long __stdcall CClientClass::Add(wchar_t *)" (?Add@CClientClass@@UAGJPA_W@Z) Debug\ClientVdll.dll : fatal error LNK1120: 1 unresolved externals. Any suggestions for this issue? thanks abhi Tag: tcp socket Tag: 266662
  - 11
    - VC++ vs. FoxPro I've generated a DLL with Visual FoxPro 9.0 and, on the other side, I've go a VC++ project wich uses DLL methods. I Copy the TLB file into VC++ project folder and the I rebuild EXE. If I create the DLL in VFP 6.0 it works ok, but if I do in VFP 9.0, when I build EXE, it says 'Function does not take <n> parameters'. I call DLL functions in this way: vResult = Iobj->mymethod(vparam, vparam, ...); Tag: tcp socket Tag: 266659
  - 12
    - Urge for help in a game programming Four Win Description To program the play named "four win", the background board should consist of a lattice with 7 columns, into which in each case 6 stones fit. The playing field stands perpendicularly, so that a stone falls always widen-possible downward. The rules are : 1=2E The goal of the Game is to place four stones in a row or column wise or diagonally as a first player. 2=2E Each player receives 21 stones of his colour (pink/green). 3=2E The green player begins. 4=2E The player lets a stone fall alternating into a row. 5=2E If no more places are in a row, then this may not be selected. 6=2E Winner will be the player, who can accommodate first four stones in a continuous manner (horizontally, vertically, diagonally). 7=2E If the backboard is full and there is no certain winner, then the play ends undecided. For a better understanding go to: http://www.kielack.de/games/fourwins.htm The program is to cover the following capability characteristics: =B7 Play between two human players. =B7 Play between a human and a computer player. =B7 Play between two computer players. =B7 Each player is to extend the abstract class ,,Player ", which is available on the practical course web pages for the Download. References =B7 One can make Screenshots simply by pressing the key at the same time ,,pressure/print screen "and/or <Alt> and ,,pressure/print screen "(the screen and/or the active window copies as diagram into the intermediate file, so that these can be inserted in Word over Edit->Past as picture directly). =B7 The aim for this program is to show as simple text edition as shown in the example TicTacToe (see C++ program simpleTicTacToe.cpp). =B7 In the simplest case the computer player can make coincidental courses (see C++ program zufallszahlen.cpp (RandomNumbers). A more intelligent strategy for the computer player can be programmed according to the mini max algorithm (e.g. see. http://de.wikipedia.org/wiki/ http://en.wikipedia.org/wiki/Minimax_algorithm). An improved variant for this algorithm is the alpha beta search (e.g. see http://en.wikipedia.org/wiki/Alpha-Beta). Tag: tcp socket Tag: 266656
  - 13
    - Packet split Hi all, I have a problem recieving data from a host machine. I m usiing socket programing. I formed a packet on host machine. When i run the application on the local machine (both server and client) I reiceve all data and packets. When i run the server on a remote machine i recieve less size data than expected once a while. I should recieve a packet size of 1118. sometime i recieve two packets with the size of 342 and 746. I dont figure it out why i recieve like this. Any help would be great. Thanks, thiru Tag: tcp socket Tag: 266654
  - 14
    - Linker Warning Hi !!! I am using Microsoft Visual C++ 8.0 compiler. I have precompiled headers file "precomp.h" and "precomp.cpp". When I compile I have always this warning "precomp.cpp: no public symbols found, archive members will be inaccessible". I know that by other empty files is it OK, but by precompiled headers file it is OK that I have empty source file. What should I do, if I want to switch off the warning? Thanks. Tag: tcp socket Tag: 266652
  - 15
    - PeekNamedPipe not working! I am using PeekNamedPipe on anonymous pipes. It always returns 0 in lpBytesRead, lpTotalBytesAvail and lpBytesLeftThisMessage even if data is written in pipe. I want to check if data is available to read, before making a ReadFile call, so that it does not blocks. Is there some other way? Tag: tcp socket Tag: 266644
  - 16
    - How can i run an .exe on vista which i have designed on win2k3 Hi, I have developed a VC++ program on win2k3 environment. When i am running it on Vista then it is giving an error. "Side by side configuration is not proper" What it means? Thanks inadvance for suggestion. --Durgesh Tag: tcp socket Tag: 266640
  - 17
    - non admin FlushFileBuffers for a volume Hi All, In our software we need to flush all the data on a removable device(disk on key). The problem is that when user is non admin we can't obtain handle to the volume using CreateFile cause of the insufficient privileges. I'm looking for a work around to cause file/cache manager to flush all the data. Btw eject is not an option for us as after flushing we are doing some operation via disk on keys firmware that cause it to show "private" folders, if we do this without flush the data is lost on Win2k machines where Performance check box is by default turned on on disk on keys. Thanks in advance Tag: tcp socket Tag: 266638
  - 18
    - Write text to, split, join, and page count tiffs Ok, this has been asked over and over again....but i have to ask because there has to be a better way (without spending $$). First things first, I'm running many (thousands of) tif images through an application I have been building. So far, i have used the Image.GetFrameCount to get page counts and write strings on images, split, and join using the graphics object. For anyone that has used either of these, it is incredibly slow especially compared to some of these 3rd party libraries that you can purchase for hundreds to thousands of dollars....seems kind of pointless to spend more than $10 on what i need to use them for. I have used FreeImage from SourceForge, and, compared to namely LeadTools, it is STILL slower for getting page counts and I cant even do any drawing using the library. What I am looking for is either a library or an example of how I can perform these actions with speed as a must. I am primarily a C# developer but can delve a little in C++. I am willing to do a little C++ code, so if that helps with a solution please dont let that be a limit. ANY help in any of these areas is much more appreciated than you can imagine. Thank you in advance! Tag: tcp socket Tag: 266635
  - 19
    - Question about hooking Hi, I'm trying to hook another application's window to check for WM_MOVE messages. Does anyone know of any examples (that arent for keyboard and mouse hooks)? I suppose i want to do the same as SPY++, just for fewer messages! Thankyou in expectation, James Tag: tcp socket Tag: 266628
  - 20
    - Convert TCHAR to integer! Hello, As I now know that const or not, either way the parameter is accepted in the _ttoi() function. On that note... Please consider the following code: =================================================== case WM_COMMAND: if ((LOWORD(wParam) >= extnl_INT_INPUT_MVars[0].CW2_CV_ID) && (LOWORD(wParam) <= extnl_INT_INPUT_MVars[3].CW2_CV_ID) ) //Fetch function! UpDateSimExtrnlInputs_INT(wParam, lParam, &io, HWND_CW2_extnl_INT_INPUT_CV); ...other code .... ================================================== ===============================UpDateSimExtrnlInputs_INT() void UpDateSimExtrnlInputs_INT(WPARAM wParam, LPARAM lParam, IO *io, HWND HWND_CW2_extnl_INT_INPUT_CV[]) { int k; //TCHAR szBufferINPUT[] = _T("12345"); Tried it ! Gives error! TCHAR szBufferINPUT[10]; //Declare 10 character array SendMessage( (HWND) lParam, WM_GETTEXT, 5, (LPARAM)szBufferINPUT ); //Get the text in the control //The next line should convert the string buffer to an integer k = _ttoi(szBufferINPUT); //This line gives the error! } ===================================================== Here is the error that I get: c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(780): error C3861: '_ttoi': identifier not found, even with argument-dependent lookup I have re-posted this question, and the fellows that answered the previous post are very welcome to continue with it and I will more that willingly work on all your feedback. I find the previous post had too many topics and I was getting confused that's all! :) I don't disagree with you Brian, hence, yes, gosh, Yes we are in trouble! I know that the TEXT macro is defined in a few ways like as: #define _T(x) __T(x) and so that's where David got the following line: TCHAR szBufferINPUT[] = _T("12345"); But I get an error on this... c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(768): error C3861: '_T': identifier not found, even with argument-dependent lookup But you see that SendMessage() will get different text from different controls. So: TCHAR szBufferINPUT[] = _T("12345"); can't be so. The buffer has to be filled in with a new values everytime. And I did try it if you look at the above code! Anyways I still would appreciate some help on this topic! Thankyou news groups! -- Best regards Robert -- Best regards Robert Tag: tcp socket Tag: 266627
  - 21
    - Convert TCHAR to const char? Hello, I have the following sendMessage that returns text and is stored in a string of TCHAR type. ============================================== TCHAR szBufferINPUT[10]; SendMessage( (HWND) lParam, WM_GETTEXT, 5, (LPARAM)szBufferINPUT ); ============================================== Now, I need to convert this text string to an integer type.... So I fugure to go with the atoi function! But the atoi takes in a const char! I looked in many books for explanations on conversions from TCHAR to const char.... ya right! Haven't found one! So I searched the WIndows help and came up with this: "Remarks These functions convert a character string to a double-precision, floating-point value (atof and _wtof), an integer value (atoi, _atoi64, _wtoi and _wtoi64), or a long integer value (atol and _wtol). " So I guess my choice would be atoi or _wtoi right? in either case I getthe following errors respectively: c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(773): error C2664: '_wtoi' : cannot convert parameter 1 from 'TCHAR' to 'const wchar_t *' c:\_DTS_PROGRAMMING\C_PROGRAMMING\vc++\MY_APPS_LAB\XPPLC\WndProc_CW2.cpp(773): error C2664: 'atoi' : cannot convert parameter 1 from 'TCHAR' to 'const char *' Can anyone show me what I need to do for this to work along with a breif explaination so I can get one step closer to fully understand data types and their conversions! A little discouraged although axious to learn! All suggestions appreciated! -- Kind regards Robert Tag: tcp socket Tag: 266613
  - 22
    - Typelib info for IPersistFile interface ? Hi: I need my atl object to implement the IPersistFile interface. Any of you know where is the Typelib info (*.tlb,*.exe,*.dll,*.ocx,*.ocb file) for that interface? Upon OleView tool that interface is provided by ole32.dll, but that file doesn't have that kind of info embedded. Thanks in advance. Regards. Tag: tcp socket Tag: 266612
  - 23
    - Afx Out of curiosity, what does Afx stand for in MFC lingo? Thanks. Tag: tcp socket Tag: 266609
  - 24
    - Quick question! Hello, Say I have a break point on the following line of code: ============================================= static TCHAR szBufferINPUT[10]; for(i=0;i<4;i++) { HWND_CW2_extnl_INT_INPUT_CV[i] = CreateWindow( TEXT ("edit"), TEXT("zero"), WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT | ES_MULTILINE, extnl_INT_INPUT_MVars[i].ExtnlMVarLeft, extnl_INT_INPUT_MVars[i].ExtnlMVarTop, extnl_INT_INPUT_MVars[i].ExtnlMVarRight, extnl_INT_INPUT_MVars[i].ExtnlMVarBottom, hwnd,(HMENU)extnl_INT_INPUT_MVars[i].CW2_CV_ID, ((LPCREATESTRUCT) lParam)->hInstance,NULL); } =============================================== When the program execution stops at the line above and I view the locals variables watch, the value of the handle returned from the above statement at this point is 244842618. Obviously, I only look at the first control for now... so at, say when i = 0. So later in my code I click on the first edit control and I have another break point in the code handling for this control as done so in the following code: ================================================= case WM_COMMAND: if ((LOWORD(wParam) >= extnl_INT_INPUT_MVars[0].CW2_CV_ID) && (LOWORD(wParam) <= extnl_INT_INPUT_MVars[3].CW2_CV_ID) ) SendMessage( //***BREAKPOINT HERE*** (HWND) lParam, EM_GETLINE, 0, (LPARAM) szBufferINPUT ); ================================================= why is it that if I put a break point at SendMessage() line above, the value of lParam is not 244842618? It is 3212454 instead? Isn't lParam the child control's handle? Atleast this is what I read! Okay, okay... I actually read that it was the child Window handle! But isn't that the same thing? Why the different handle values? And the second part of my question is that I am trying to retreive the value from my edit control.... As you see as I create my edit controls I insert a default value of "zero" in them! Why is it that when I run the code above and when I put my cursor over the szBufferINPUT in the following line of code I get "". Means it is reading nothing when I expected a "zero" to be read? SendMessage( (HWND) lParam, EM_GETLINE, 0, (LPARAM) szBufferINPUT ); =================================================== [2nd Part of my question] Also, I have gone through this 6 months ago with some sympathetic news groups fellows and it still gets the best of me because everytime I see this I sort of generate a fear of it. But now that it is facing me one more time, I shall persue more knowledge on it! ***DATA TYPES!*** Okay, lest try this again! If I may politely ask you to be patient, god knows you all have! :) ***All the edit controls I have created can hold up to 4 characters max! The help files for the EM_GETLINE message says: "lParam Pointer to the buffer that receives a copy of the line. Before sending the message, set the first word of this buffer to the size, in TCHARs, of the buffer. For ANSI text, this is the number of bytes; for Unicode text, this is the number of characters. The size in the first word is overwritten by the copied line." But when we look at the prototype of this function it says that lParam should take a (LPARAM) or a (LPCTSTR) type right? But LPCTSTR has been defined as so in the WINNT.H of the Windows files: =============================================== typedef CONST WCHAR * LPCWCH, * PCWCH, * LPCWSTR, * PCWSTR and then: #ifdef UNICODE ....other type def's... typedef LPCWSTR LPCTSTR =============================================== So if I declare my string buffer in TCHARs as stipulated above! static TCHAR szBufferINPUT[10]; //Space for 10 characters! then how does the prototype parameter accept a TCHAR when it should accept a LPCTSTR? Because as typedefed above, if LPCTSTR is defined as a LPCWSTR type and further LPCWSTR is defined as a CONST WCHAR type so then, how is does the CONST WCHAR type defined as a TCHAR type, which is what we need right? Could this have something to do why I read "" instead of "zero" in the 1st part of my question? Sorry for the lenghty post! All help appreciated..... P.S. Sorry for the numerous postings, this month its like almost every line I try, turns up to be a many hours snag! -- Best regards Roberto Tag: tcp socket Tag: 266605
  - 25
    - thread Is there any way to create a thread that does not begin by calling a function? I would basically like a thread that starts executing at the current point in the program. This would be similar to calling the Unix fork() function but for threads. It would help make my code much cleaner. Thank you. Tag: tcp socket Tag: 266604
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  - 1
    - CBitmap - Load JPG Hi there, I'm using the CBitmap class to load images from file. At current I am having to use the LoadImage method of User32.dll to load my images but unfortunately it does not seem to support the loading of any other image than BMP. I was just wondering what the normal procedure for loading JPEG's, GIFS etc into a CBitmap object usuall is? Nick. Tag: tcp socket Tag: 266599
  - 2
    - importing messages from outlook express how we can import picture messages from outlook express using dbxMessage in vc++? Tag: tcp socket Tag: 266595
  - 3
    - What the....! is going on! Hello, This one I just had to post! It must be me again.... but I must know why! Check this out: ==================================== case WM_COMMAND: //IF EXIT BUTTON CLICKED THEN EXIT APPLICATION if (LOWORD(wParam) == WindowButtonsCW2[0].MW_btC_ID) DestroyWindow(hwnd); //End application //UPDATE SIMULATED BOOLEAN INPUTS else if ((LOWORD(wParam) >= ChkBoxes[0].MW_btC_ID) || (LOWORD(wParam) <= ChkBoxes[3].MW_btC_ID) ) UpdatingSimInputs_BOOL(lParam,&io); //UPDATE SIMULATED INTEGER INPUTS else if (LOWORD(wParam) == 150) UpDateSimExtrnlInputs_INT(); //***IT NEVER COMES HERE!!!*** return 0; ================================================== It never goes to the following line??????????????????????????? UpDateSimExtrnlInputs_INT(); The value of wParam is 16777366, which the LOWORD of this is 150! I tried it with brackets and no brakets after the if's and else if's, and same problem! If I remove all (else if's) then it works, like this: ============================================= case WM_COMMAND: //UPDATE SIMULATED INTEGER INPUTS if (LOWORD(wParam) == 150) UpDateSimExtrnlInputs_INT(); //***NOW IT COMES HERE!!!*** return 0; =============================================== This ought to be a good one, I tell ya! :-) Allfeedback welcome ! Thanks! -- Best regards Robert Tag: tcp socket Tag: 266586
  - 4
    - const std::map reference and __declspec property Inside my class, I'm maintaining a private map like this: std::map< unsigned long, AuthorizedDatabase > m_authorizedDatabases; The idea is to expose this as a property and be able to reference individual elements using a syntax like this: AuthorizedDatabase db = x.AuthorizedDatabases[0x09000112]; Currently, I had a failed attempt at this using a property and an accessor method: const std::map< unsigned long, AuthorizedDatabase >& GetAuthorizedDatabases() const; __declspec( property( get=GetAuthorizedDatabases ) ) const std::map< unsigned long, AuthorizedDatabase >& AuthorizedDatabases; This obviously won't work because I'm returning a const map reference and the operator[] is non-const because it can modify the map. I'd rather not return a non-const reference that could be modified, and I'd also like to avoid returning a complete copy of the map. Is there any container class better suited to this that has an operator[] that can be used on a const version of the object? Alternatively, is there a better way to go about accomplishing this? Thanks, -Matthew Tag: tcp socket Tag: 266584
  - 5
    - using tryparse Hello everyone, I've got a little problem, I'm programming in visual c++ and I try to get back some numbers from a form using tryparse. It works perfectly on my computer because the configuration is an english one. But on a french configuration where the dot of floats is a comma it doesn't work. I mean it works with a comma but I would like to stay in an english configuration with the dot. Thanks for your help -- ryo Tag: tcp socket Tag: 266578
  - 6
    - customize setting for \t escape sequence Hello, I am using MSVC C++ .NET. I am trying to write a simple console program using cout to display text to the console window. When I try to use the \t escape sequence, it gives me 3 spaces. I would like it to give me 4 spaces. How do I change this? Step by Step wallthrough or a link to a step by step "dummy" proof walk through would be GREAT! Thank you, -- Geoff glhart\\@\\hotmail.\\com Tag: tcp socket Tag: 266575
  - 7
    - "edit" control is read only? Hello, I am using the edit class as I am creating a control as so: ============================================== static HWND HWND1; LRESULT xxx; HWND1 = CreateWindow( TEXT ("edit"), TEXT("zero"), WS_CHILD | WS_VISIBLE | WS_BORDER | ES_LEFT | ES_MULTILINE, 10,10,50,30, hwnd,(HMENU)800, (HINSTANCE) GetWindowLong(hwnd,GWL_HINSTANCE),NULL); //Set the control as non read only! xxx = SendMessage( (HWND) HWND1, // handle to destination control (UINT) EM_SETREADONLY, // message ID (WPARAM) false, // = (WPARAM) () wParam; (LPARAM) 0); // = 0; not used, must be zero ); =================================================== Can anyone tell me why the edit control created with CreateWindow appears as read only. I don't see a flashing cursor in the control, nor can I type text in it! I know the above code is not much for you fellows to work with, however before I spend 4 hours reducing my project to a few compilable lines, If I may politely ask! I was just wondering if someone had this problem already where its solution would be an obvious and simplistic one! If not well, just let me know and its no problem, I will crunch it down to more of an analysable and compilable size! Also, xxx reurns a 1, apparently if the function fails, it should return a 0. So I guess my control is not set as read only! But why is it still read only? My code is 99% the same as the POPPAD1.C from M. Petzold's hand book! P.396. The only difference is that as a whole, my application is much larger and I am doing this on a child window where as he is doing it on the main wndProc window. I don't think this should make a difference.... But I could be wrong! All feedback for this is appreciated. Wish you all a nice day! :) -- Best regards Robert Tag: tcp socket Tag: 266560
  - 8
    - Are std::list and std::map safe to export? Is it safe to export a class containing public std::list and std::map members and suppress the C4251 warning? I've seen mixed results in my search for an answer. Some say to explicitly export an instantiation (http://support.microsoft.com/kb/q168958/) for vectors, but the remaining STL classes cannot be exported. Others have suggested disabling the warning or explicitly exporting instantiations of all related STL classes (http://www.unknownroad.com/rtfm/VisualStudio/warningC4251.html). What's the general consensus on using the various STL classes from across DLL boundaries? Thanks, -Matthew Tag: tcp socket Tag: 266558
  - 9
    - returning a char buffer from com object I have a COM object with a method: STDMETHODIMP CIMyAPI::GetValueA(CHAR * string, UINT * nMaxLen) { *nMaxLen = sprintf_s(string, *nMaxLen, "Hello"); return S_OK; } but, when I call this method from a class that instantiates my COM object like this: SomeFunction() { IIMyAPIPtr pIMyAPI; //... CHAR stringA[32] = {'\0'}; UINT len = sizeof(stringA); hr = pIMyAPI->GetValueA(stringA, &len); //... } stringA just contains "H" and not "Hello". So, how do I get a buffer in and out of a COM object? -PaulH If it helps, my IDL definition for this function is: [id(4), helpstring("method GetValueA")] HRESULT GetValueA([out] CHAR * string, [in,out] UINT * nMaxLen); Tag: tcp socket Tag: 266549
  - 10
    - Kill debug for single module Hi, I am having a problem with a certain DLL (thats basically littered with badly placed interupts / breakpoints) and I would like to disable the debugger picking them up for just the one DLL. Is this possible? if so would someone explain to me how to acomplish this in Visual Studio 2005. Cheers -- - Mark Randall http://www.temporal-solutions.co.uk "We're Systems and Networks..." "It's our job to know..." Tag: tcp socket Tag: 266547
  - 11
    - Slow function I'm creating an application that will be calling a function that takes about a minute or so to process some data. What is the standard procedure for doing something like this in Windows? I don't want the Graphical User Interface to freeze up or anything like that. I'm guessing that I can create a new thread to call the function using CreateThread and then pop up a modal dialog box telling the user to wait. Or is there a better way of doing this? Thank you. Tag: tcp socket Tag: 266541
  - 12
    - Link problem I recently moved a project from VS6 to VS2005 and am now receiving: libguide.lib(z_Windows_NT-586_util.obj) : error LNK2001: unresolved external symbol __iob How can I resolve this? Thanks, Drew Tag: tcp socket Tag: 266538
  - 13
    - creating a .tlb to for a COM DLL I'm working on a COM object DLL with VS2005, it compiles fine with no errors or warnings and registers okay, but no .tlb file is created with it. When I go to import it with a test app (#import "mydll.dll"), I get the compiler error "fatal error C1083: Cannot open type library file: 'mydll.dll': Error loading type library/DLL." I assume it's because there's no .tlb associated with it??? Because midl is build in to VS2005, I figured everything would "just work". I am using the /tlb "mydll.tlb" option and I have all the error-checking options turned on. Is there something else I need to do? Is there an obvious thing I'm doing wrong, perhaps? I did notice that midl, on warning lv 4 only, does have 32 warnings about "warning MIDL2111 : identifier length exceeds 31 characters :". Would that keep the .tlb from forming? Thanks, PaulH Tag: tcp socket Tag: 266531
  - 14
    - multifile program organization All my previous programs have had the classes and main() in the same .cpp file. For the first time, I have separated the classes into header (.h) and source (.cpp) files. My general question is: if I want to have two separate application programs (i.e. main() ) that will use these classes, what is the standard way of organizing the various files? Should I (1) add a new workspace to the original project folder, thereby, having two workspaces and their respective files in the same project folder? (2) add a new project folder to the original folder? (3) put the class files in a separate folder, then have two separate project folders for the two different application programs? I would just like to know what the standard practice is. (I use MS VC 6.0.) Tag: tcp socket Tag: 266526
  - 15
    - Ping code featuring IPv6 I am developing a mfc software who is in the need of pinging IPv4 and IPv6 addresses, but the code I'm working with only has the capability of pinging IPv4 addresses. There are some software requirements making it harder, the software is standalone, requiring no installation. It should also be able to run it even though the current user isn't an administartor on the computer. Has anyone any experiance in this topic or could point me in the right direction? /Mattias Tag: tcp socket Tag: 266525
  - 16
    - On runtimes, string wrapping and vs7 / vs8 Hi all. We have a dll with an api that use std::strings for a bunch of things. It worked fine as long as you match the application & library runtimes. Unfortunately, not all of our customers can match the runtimes due to other restrictions such as other dll:s, mfc stuff etc. So we made an effort to wrap the stuff we needed to wrap, ensuring that heap-allocated things whould get allocated / deallocated in the same heap. With VS2003, it worked like a charm. The developers were happy, tech support was even more happy, and the customers were not complaining as much as they used to. Then came VS2005, and our wrapping solution doesn't work anymore. The problems occur when you use a release-mode dll compiled with VS2003 with a debug-mode application compiled with VS2005. Now, I can imagine that our solution really is pushing it a bit, but I'd love to get some details on why it doesn't work. The solution relies on that the inline functions of the library objects gets compiled with the application code, and the objects will have some functions compiled with VS2003 and some with VS2005. My guess would be that there are some differences in object layout between VS2003 and debug mode VS2005, since the errors we get are heap corruptions and they can be triggered by using inlined setters on other object members. That is, I can get a heap corruption from a string destructor in an object without ever touching that string, but having touched other members in that object. In the below sample, I'd get this from the destructor on SampleLibClass::stringThing after a testcase that only use the nonWrappedSetter. So, a sketch of our solution (API_DECL is the standard dllimport / dllexport macro): // A wrapper for std::string class StringH { public: // application side interface API_DECL StringH(); API_DECL ~StringH(); API_DECL const char* c_str() const; API_DECL count_t length() const; // library side interface void init(const char *str); void init(const std::string& str); private: // defined in the cpp-file as: // struct StringH::Impl : public string { ... } struct Impl; Impl* pImpl; StringH(const StringH&) {} }; // this is how we use it in the library class SampleLibClass { public: // ... some stuff ... void setStringThing(const std::string &str) { setStringThing_(str.c_str()); } const std::string getStringThing() const { StringH sh; getStringThing_(sh); return std::string(sh.c_str()); } API_DECL int nonWrappedSetter(int prm) { nonWrappedInt = prm; } private: API_DECL void setStringThing_(const char *cstr); API_DECL void getStringThing_(StringH &sh) const; std::string stringThing; int nonWrappedInt; // ... more stuff ... } So... Does the object layout differ? Is this an ok-ish solution, or are we violating a bunch of things and we were simply lucky that it worked with VS2003 and the different runtimes there? Would it work if we removed all inlined non-wrapped setters and getters, moving their implementations to the sourcefile instead? Any hints appreciated! Our other option would be to scrap the strings, and vector<string> that we use and use const char* and const char* arrays instead, perhaps combined with a application side only wrapper that gets fully compiled with the application compiler. Many thanks, /Niklas Tag: tcp socket Tag: 266516
  - 17
    - VC++ 6.0 Linker query. The functions rijndaelEncrypt and rijndaelKeySeupEnc are clearly defined in rijndael-alg-fst.c. The compiling goes without any eror, but the linking throws up errors. I tried fiddling with the options in the linker with no luck. What am I missing here? I have used Bloodshed till now and compiling and building worked fine this way. Below is my build report: Deleting intermediate files and output files for project 'sfx - Win32 Debug'. --------------------Configuration: sfx - Win32 Debug-------------------- Compiling resources... Compiling... rijndael-alg-fst.c sfx.cpp Linking... sfx.obj : error LNK2001: unresolved external symbol "void __cdecl rijndaelEncrypt(unsigned int const * const,int,unsigned char const * const,unsigned char * const)" (?rijndaelEncrypt@@YAXQBIHQBEQAE@Z) sfx.obj : error LNK2001: unresolved external symbol "int __cdecl rijndaelKeySetupEnc(unsigned int * const,unsigned char const * const,int)" (?rijndaelKeySetupEnc@@YAHQAIQBEH@Z) Debug/sfx.exe : fatal error LNK1120: 2 unresolved externals Error executing link.exe. sfx.exe - 3 error(s) -- Tag: tcp socket Tag: 266504
  - 18
    - Converting FILETIME into two DWORDS Hi, i want to extract date and time from a filetime structure into two dwords in the same way in which NTFS store the file creation, modification and access date. Can anybody tell me how to do this. Thanks. Tag: tcp socket Tag: 266503
  - 19
    - Calculate angle between two lines hello, i want to calculate angle between two lines considering all the possiblities (acute, obtuse and parallel to Y-axis). If any one can tell me how to proceed with this (I have drawn these lines using MFC classes and want to display the angle.) thank you. Tag: tcp socket Tag: 266497
  - 20
    - Why crash ? Hi Experts: I have a a few lines of code and it crashes everytime at the line marked below. The code just converts a string into upper case string. Any help is appriciated. Thanks In Advance! Polaris ----------------------------------------------------- #include <iostream> #include <string> using namespace std; int main (int argc, wchar_t *argv[]) { wchar_t *str = L"abcdefghijklmn"; // transfer str to upper case wstring sUpper; int len = (int) wcslen (str); for (int i=0; i<=len; i++) sUpper[i] = towupper (str[i]); // crash here when i = 11 return 0; } Tag: tcp socket Tag: 266487
  - 21
    - Buttons Pop up [Part-2] Hello, If you are not familiar with the question of this post, you can get a quick glimps at its description at the first part of this post called "Buttons Pop up!" The reason I started a new post on the same question is so I don't clutter up the previous post! So here is a clean start! I have taken the advice of a news groups fellow to strip down my program so I can isolate the problem, and I did, however the situation still persists. I call this a "situation" because at this point, I don't know if the problem I am facing is normal when creating a windows with CreateWindow(); In short, I now have two (2) windows, and therefore it means I have 2 WndProc's, WndProc.cpp and WndProc_CW2.cpp which we will call Window#1 and Window #2 respectively. I also have a Main.cpp for the good old Windows message pump! The first window is based on WndProc.cpp with one(1) button which opens a child window based on WndProc_CW2.pp. I also have an exit button on the first window which is of no relevance to this issue. So when I click on a button on window#1, it opens window#2, and do you agree that some space on the second window is right above some buttons of the first window right underneath.... right! (lets call this space "space X"). So space X is the space that is on my second window where it aligns directly with the space containing a button on the opened window #1 which is right behind it. If I click on some of its space X, well, the button from the underneath window, pops up in the top window(window #2) currently open. ??? I can even move window#2 around and this newly poped up button stays in the client area! Does anyone have any I deas of what could be going on ! Here is a watered down skeleton of the app, it contains 6 very small files! Here's the code: -Excuse me if its a long post....You would not believe how much code I removed... however if you feel its still too long, its no problem, let me know and I will repost a shorter version. Although, it only looks long however its all basic routine code that is very common in every Windows code. ============================================Main.h //DECLARE CALLBACKS! LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM); LRESULT CALLBACK WndProc_CW2 (HWND, UINT, WPARAM, LPARAM); ================================================== ============================================Main.cpp #include <windows.h> #include "MAIN.h" static TCHAR *szMW_Name = TEXT ("MAIN APPLICATION 1"); //Name of window static TCHAR szMW_ClassName[] = TEXT ("MW"); //Class name of window //Declaration of Class name for Window based on WndProc_CW2 static TCHAR szCW2_ClassName[] = TEXT("CW2"); int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInnstance, PSTR szCmdLine, int iCmdShow) { HWND hwnd; MSG msg; WNDCLASS wndclass; //-MAIN WINDOW CONFIGURATION based on WndProc wndclass.style = CS_HREDRAW |CS_VREDRAW; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0; wndclass.cbWndExtra = 0; wndclass.hInstance = hInstance; wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION); wndclass.hCursor = LoadCursor (NULL, IDC_ARROW); wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH); wndclass.lpszMenuName = NULL; wndclass.lpszClassName = szMW_ClassName; //-REGISTRATION RegisterClass (&wndclass); //-CONFIGURATION -CHILD WINDOW #2 wndclass.lpfnWndProc = WndProc_CW2; wndclass.hIcon = LoadIcon (NULL, IDI_EXCLAMATION); wndclass.hIcon = NULL; wndclass.lpszClassName = szCW2_ClassName; //-REGISTRATION RegisterClass(&wndclass); //-CREATE MAIN APPLICATION WINDOW hwnd = CreateWindow (szMW_ClassName,szMW_Name, WS_OVERLAPPEDWINDOW , 20, 20, 750, 550,NULL,NULL, hInstance, NULL); ShowWindow(hwnd, iCmdShow); UpdateWindow (hwnd); //-WINDOWS MESSAGE LOOP while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return (int) msg.wParam; } =================================================== ==========================================WndPro.h struct hdMW_WindowButtonsTAG { int iCTL_idx; TCHAR *szMW_btC_Name; int MW_btC_RectLeft; int MW_btC_RectTop; int MW_btC_RectRight; int MW_btC_RectBottom; int MW_btC_ID; }; =================================================== ==========================================WndProc.cpp #include <windows.h> #include "WndProc.h" #define CW2_ID 2 static TCHAR *szCW2_Name = TEXT("Programming GUI"); //Child window title bar name extern TCHAR szCW2_ClassName[] = TEXT("CW2"); //Child window class name . This is declared as extern because I need the class name as a parameter for registration of the window in Main.cpp also. LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { //MAIN WINDOW CONTROL PROPERTIES hdMW_WindowButtonsTAG WindowButtons[] = { 1,TEXT("< EXIT >"),650,450,80,40,1, 2,TEXT("< GUI >"),200,30,180,30,2, }; static HWND hdCWdws[1]; static HWND hdMW_WindowButtons[2]; //Main window buttons int i; HDC hdc; PAINTSTRUCT ps; RECT rect; switch(message) { case WM_CREATE: hdc = GetDC(hwnd); //MAIN WINDOW BUTTON CONTROLS for(i=0;i<2;i++) { hdMW_WindowButtons[i] = CreateWindow( TEXT ("button"),WindowButtons[i].szMW_btC_Name, WS_CHILD | WS_VISIBLE |BS_PUSHBUTTON , WindowButtons[i].MW_btC_RectLeft, WindowButtons[i].MW_btC_RectTop, WindowButtons[i].MW_btC_RectRight, WindowButtons[i].MW_btC_RectBottom, hwnd,(HMENU)WindowButtons[i].MW_btC_ID, (HINSTANCE) GetWindowLong(hwnd,GWL_HINSTANCE),NULL); } ReleaseDC(hwnd,hdc); return 0; case WM_COMMAND: //IF EXIT BUTTON CLICKED THEN EXIT APPLICATION if (LOWORD(wParam) == WindowButtons[0].MW_btC_ID) { DestroyWindow(hwnd); //End application } //CREATE CHILD WINDOW #2 WHEN BUTTON #2 PRESSED else if (LOWORD(wParam) == WindowButtons[1].MW_btC_ID) hdCWdws[1] = CreateWindow( szCW2_ClassName,szCW2_Name, WS_CHILD | WS_CAPTION | WS_SYSMENU, 10, 10, 700, 450,hwnd,(HMENU)CW2_ID, (HINSTANCE) GetWindowLong(hwnd,GWL_HINSTANCE),NULL); //SHOW CHILD WINDOW #1 ShowWindow(hdCWdws[1],SW_SHOW); return 0; case WM_DESTROY: //CLEAR ALL OBJECTS PostQuitMessage(0); return 0; } return DefWindowProc(hwnd,message,wParam,lParam); } ================================================== ===========================================WndPro_CW2.h struct hdCW2_WindowButtonsTAG { int iCTL_idx; TCHAR *szMW_btC_Name; int MW_btC_RectLeft; int MW_btC_RectTop; int MW_btC_RectRight; int MW_btC_RectBottom; int MW_btC_ID; }; =================================================== ========================================WndProc_CW2.cpp #include <windows.h> #include "WndProc_CW2.h" LRESULT CALLBACK WndProc_CW2(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { //MAIN WINDOW CONTROL PROPERTIES hdCW2_WindowButtonsTAG WindowButtonsCW2[] = { 1,TEXT("< EXIT >"),580,350,80,40,1, }; static HWND hdCW2_WindowButtons[1]; int i; HDC hdc; switch(message) { case WM_SIZE: SetFocus(hwnd); return 0; case WM_CREATE: hdc = GetDC(hwnd); //MAIN WINDOW BUTTON CONTROLS for(i=0;i<1;i++) { hdCW2_WindowButtons[i] = CreateWindow( TEXT ("button"),WindowButtonsCW2[i].szMW_btC_Name, WS_CHILD | WS_VISIBLE |BS_PUSHBUTTON , WindowButtonsCW2[i].MW_btC_RectLeft, WindowButtonsCW2[i].MW_btC_RectTop, WindowButtonsCW2[i].MW_btC_RectRight, WindowButtonsCW2[i].MW_btC_RectBottom, hwnd,(HMENU)WindowButtonsCW2[i].MW_btC_ID, (HINSTANCE) GetWindowLong(hwnd,GWL_HINSTANCE),NULL); } ReleaseDC(hwnd,hdc); return 0; case WM_COMMAND: //IF EXIT BUTTON CLICKED THEN EXIT APPLICATION if (LOWORD(wParam) == WindowButtonsCW2[0].MW_btC_ID) { DestroyWindow(hwnd); //End application } return 0; case WM_CLOSE: //Handler to do code on close break; } return DefWindowProc(hwnd,message,wParam,lParam); } ==================================================== Agian, excuse the lenghty post..... So, basically, I always get the button to pop up from the bottom window on to the top window when clicked on space X! I am as we speak, trying to troubleshoot this, I surely appreciate any input from the news groups! Thankyou all! -- Best regards Robert Tag: tcp socket Tag: 266476
  - 22
    - Microsoft Agent I'm trying to add a Microsoft Agent character (the wizard) to my app. I placed a Microsoft Agent 2.0 ActiveX control on my MFC dialog. Then I added a variable for it. It created a class called CControl1, but it has no functions. Anyone know what I'm doing wrong? If I do this with a web browser control, the class it creates has plenty of useful functions. Tag: tcp socket Tag: 266474
  - 23
    - CDC::SelectBitmap method Hi there, For some reason I cannot seem to find any information on this method in the VS.NET 2005 documentation. I am currently having problems drawing a bitmap to a DC and most examples on the net that I come across suggest using the SelectObject method of a CDC object. My CDC object doesn't even have a SelectObject method, so I must have something different... if(m_bitmap!=NULL) { CSize pSizSize; m_bitmap.GetSize(pSizSize); CDC pCDCBitmap; pCDCBitmap.CreateCompatibleDC(dc); CBitmap pBmpBitmap = pCDCBitmap.SelectBitmap(m_bitmap); dc.BitBlt(rc.left, rc.top, pSizSize.cx, pSizSize.cy, pCDCBitmap, 0, 0, SRCCOPY); pCDCBitmap.SelectBitmap(pBmpBitmap); pCDCBitmap.DeleteDC(); } My code is very simple at the moment, but the bitmap is not appearing. I have tried calling the global SelectObject method but this produces the same result. The image has definitely been initialised in m_bitmap, and the BitBlt method is reached. Any ideas on what I could be doing wrongly? Nick. Tag: tcp socket Tag: 266466
  - 24
    - How can I validate file location in VC++ 6.0? Hi All, If I am taking input and output location from user in file handling application, how can I validate that given location exist or not using VC6 ? That is user is giving right directories or not. If the location read only extra. Tag: tcp socket Tag: 266464
  - 25
    - WaitForSingleObject on Console not working??? How can I know if there is input or not from keyboard in console application? I want to flush buffer to screen every second. In Unix, select( ) with stdin and timeout can work well( return timeout every second ), but in Windows, stdin is NOTSOCK, hence select won't work. In Windows, WaitForSingleObject( stdinHandle, 1000 ) will return "WAIT_OBJECT_0" when waiting for input. How come the following always goes into "WAIT_OBJECT_0"? What could I do? Is there any way to use select( ) in Windows with stdin? Thanks! #include <windows.h> #include <stdio.h> int main() { printf("->"); static HANDLE stdinHandle; // Get the IO handles // getc(stdin); stdinHandle = GetStdHandle(STD_INPUT_HANDLE); DWORD rc = WaitForSingleObject(stdinHandle, 1000); if( rc == WAIT_TIMEOUT ) { printf("Timeout..."); } else if( rc == WAIT_ABANDONED ) { printf("WAIT_ABANDONED"); } else if( rc == WAIT_OBJECT_0 ) // Always go into this branch, why??? { printf("WAIT_OBJECT_0"); } else if( rc == WAIT_FAILED ) { printf("Error:%d.", GetLastError()); } return 0; } Tag: tcp socket Tag: 266457

hi,
Can tcp socket be a one way communication. If i am only reading from
server(receive( , , , )), do i still have to write to server (send ( , , , ))
after each recieve call !!!!

-thiru

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Re: tcp socket by Igor

Igor
Wed Jul 19 10:57:32 CDT 2006

Thiru <Thiru@discussions.microsoft.com> wrote:
> Can tcp socket be a one way communication. If i am only reading from
> server(receive( , , , )), do i still have to write to server (send (
> , , , )) after each recieve call !!!!

Of course not. You are by no means obligated to send anything. I'm
curious - where did you get such an idea?
--
With best wishes,
Igor Tandetnik

With sufficient thrust, pigs fly just fine. However, this is not
necessarily a good idea. It is hard to be sure where they are going to
land, and it could be dangerous sitting under them as they fly
overhead. -- RFC 1925

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