Porting a project from C to Unmanaged and Managed C++

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  - 1
    - Cannot properly return unsigned char*... Hi everyone, I have a problem in returning an unsigned char* from a function. In the main function: string name = "yabansu"; unsigned char* arr1 = (unsigned char*) name.c_str(); cout << arr1 << endl; //Correctly prints "yabansu" Let's say I wrote a function called StringToBytes for doing the same thing above as the following: unsigned char* StringToBytes(string s) { cout << (unsigned char*) s.c_str() //Correctly prints "yabansu" return (unsigned char*) s.c_str(); } Then I call this function in the main() as below; string name = "yabansu"; unsigned char* arr2 = StringToBytes(name); cout << arr2 << endl; //prints weird characters instead of "yabansu" As you see, nothing is different and the string("yabansu") can be properly displayed within the StringToBytes() function. What could be the reason Thanks... Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 2
    - Need help getting Windows sockets to work in Visual Studio C++ So, I'm working on a program that is using the WSA socket library. I've compiled it at my home computer using a command line C++ compiler (MinGW). However, when trying to compile it on a different computer using Visual Studio, I get all kinds of errors. For simplicity's sake, here's a shorter version of the code: #include <Winsock2.h> #include <Winsock.h> #include <windows.h> #include <stdio.h> ... SOCKET socky; WSADATA info; if (WSAStartup(0x0202, &info)) { printf("WSAStartup problem"); } // create the socket socky = socket(PF_INET, SOCK_STREAM, 0); if(socky == INVALID_SOCKET){ printf("Socket call error"); exit(1); ... And here are the errors: socky.obj : error LNK2019: unresolved external symbol _socket@12 referenced in function _main socky.obj : error LNK2019: unresolved external symbol _WSAStartup@8 referenced in function _main S:\graphics\socky\Debug\socky.exe : fatal error LNK1120: 2 unresolved externals Visual studio is not finding any of the WSA functions. How do I fix this Am I missing a file Is it not finding a file What's going on! Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 3
    - XSLTemplate Hi guys, I have an XSL which uses the following: < xsl:import href="../lib/ads.xsl" /> and in my XSL i'm using a "Names Template" which is defined in that import. I'm loading this XSL using the following commands: CComPtr <IXMLDOMDocument2> pDoc; pDoc.CoCreateInstance(L"msxml2.FreeThreadedDOMDocument. 3.0 "); pDoc ->put_async(VARIANT_FALSE); pDoc ->put_resolveExternals(VARIANT_FALSE); CComPtr <IXSLTemplate> pTemp; pTemp.CoCreateInstance(L"msxml2.XSLTemplate. 3.0 "); pTemp.putref_stylesheet(pDoc); I'm getting an error "Named template 'ads' does not exist in the stylesheet". When I tried using "msxml2.FreeThreadedDOMDocument.5.0" and "msxml2.XSLTemplate.5.0" it works fine. I thought it might be an old version problem. but when i tried using "msxml2.FreeThreadedDOMDocument.6.0" and "msxml2.XSLTemplate.6.0" it did not work again. Anyone has an idea or refer me to the problem i've got Joe Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 4
    - typical problem with vector push_back Hi im facing a very strange problem: whenever i use vector push_back, then after like 20 push_backs, my program makes the system physical memory to shoot to around around 1.5 GB , execution gets so slow that it's almost dead and after some more time prog gets stuck at a point Below is the snippet where i think the prob shld be. can ne1 figure out the bug void AND::buildObject (const string& gateInput1, const string& gateInput2, const string& gateOutput) { AND_Gate.reserve(500); input1 = gateInput1; input2 = gateInput2; output = gateOutput; AND_Gate.push_back(*this); // <------ here's the problem. If i comment out this line then //program runs just as normal. Even reserve service of vector is not helping //AND_Gate is a vector which I have defined as: vector <AND> AND_Gate; and it contains the// objects of AND class } Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 5
    - Erro compiling .IDL: MIDL2025 Hello all, I'm trying to compile a idl interface in VS2005 but that always get this error: Error 1 error MIDL2025 : syntax error : expecting ] or , near "annotation" C:\Program Files\Microsoft SDKs\Windows\v6.0\Include\unknwn.idl 108 Error 2 error MIDL2026 : cannot recover from earlier syntax errors; aborting compilation C:\Program Files\Microsoft SDKs\Windows\v6.0\Include\unknwn.idl 108 Anybody have idea about what could be wrong Thanks! Pamella Here is the source code: IMusicStorePlugin.idl import "oaidl.idl"; import "ocidl.idl"; [ object, uuid(1510723C-5F70-4926-AB87-DC5BD8563721), dual, helpstring("IMusicStorePlugin interface"), pointer_default(unique) ] interface IMusicStorePlugin : IDispatch { [id(1), helpstring("Revokes all licenses")] HRESULT revokeAll(); }; [ uuid(1510723C-5F70-4926-AB87-DC5BD8563721), version(1.0), helpstring("MusicStorePlugin 1.0 Type Library") ] library MusicStoreLib { importlib("stdole32.tlb"); importlib("stdole2.tlb"); [ uuid(1510723C-5F70-4926-AB87-DC5BD8563721), helpstring("MusicStorePlugin Class") ] coclass MusicStorePluginClass { [default] interface IMusicStorePlugin; }; }; Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 6
    - Visual Studio 2005: CMD.EXE was started with above paths as cd UNC Hello, In our school labs, we deploy out Visual Studio 2005 /sp1. A couple of students have an issue with running their program in Visual C++ \\samba\dwithers\dc\My Documents\Visual Studio 2005\Projects\Lab1Practice\Lab1Practice CMD.EXE was started with above paths as cd UNC paths are not supported. Defaulting to windows directory User profiles are redirect to a network share, but i don't understand what the error means. any help will be greatly appreciated Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 7
    - Multithreading, Syncronisation problem, how to use Monitor::Enter() or what to use? C++/CLI, VS2005, .NET framework (3.0) Hi, What I want to do: Write a software watchdog, and log whenever a module fails to respond. Problem: Threads collide when they try to write to the log. Error: Unhandled Exception: System.IO.IOException: The process cannot access the file ' C:\test\watchdog\debug\log.txt' because it is being used by another process. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath) at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, I nt32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions o ptions, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy) at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share) at watchdog.loggerFunction.WriteFile(String ) in c:\test\watchdog\watchdog\loggerFunction.cpp:line 74 at watchdog.TimerThread.WorkerThread(Object Name) in c:\test\watchdog\watchdog\watchdogthread.cpp:line 27 at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, C ontextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart(Object obj) Code: File access I think its in this function I should use monitor/lock or a semaphore (even tried with [synchronization]) but not 100% shure how to use them. Code Snippet namespace watchdog{ void loggerFunction::WriteFile(String^ logentry) { // where and what should I use to avoid collisions Monitor::Enter(LoggerFunction::typeid); String^ logname = "Log"; String^ filenameextension= ".txt"; String^ filename; bool writelogheader = false; filename = logname + filenameextension ; if (!File::Exists(filename)) { writelogheader = true; } FileStream^ filestream = gcnew FileStream(filename, FileMode::OpenOrCreate, FileAccess::ReadWrite,FileShare::ReadWrite); // open or create StreamWriter^ streamwrite = gcnew StreamWriter(filestream); { streamwrite->BaseStream->Seek(0, SeekOrigin::End); if (writelogheader) { // write header for new file streamwrite->Write("DATE: TIME: Log Entry:\r\n"); streamwrite->Write("------------------------------------\r\n"); } //formatting DateTime, last digits is 100th of a second streamwrite->Write("{0}", DateTime::Now.ToString("yyyyMMdd hh:mm:ss:ff")); streamwrite->Write(" "); streamwrite->Write(String::Concat(logentry , "\r\n")); streamwrite->Flush(); streamwrite->Close(); filestream->Close(); } Monitor::Exit(LoggerFunction::typeid); } }; Code: thread.h Code Snippet namespace watchdog{ using namespace System; public ref class TimerThread { public: void WorkerThread(Object^ Name); }; public value class Alive{ public: String^ MyName; int SleepTimeMS; int WhoAmI; }; } Code: thread.cpp Code Snippet namespace watchdog { void TimerThread::WorkerThread(Object^ Name){ Alive^ name = (Alive^) Name; LoggerFunction^ functions = gcnew LoggerFunction; if ( Thread::CurrentThread->Name == nullptr ) { // to avoid invalid operation exception Thread::CurrentThread->Name = name->ModuleName; } while (true) { Thread::Sleep(name->SleepTimeMS); //Begin napping. if(IAmAlive == false) { functions->WriteFile(name->ModuleName); // do more work and finally shutting down Thread::Sleep(Timeout::Infinite); } else{ IAmAlive = false; // set IAmAlive to false and sleep // hopefully before waking up a // message has set it to true } } } } Code Main.c Code Snippet namespace watchdog { public ref class cMain { public: static void pMain(){ // init values Alive AliveCheck; LoggerFunction^ functions = gcnew LoggerFunction; TimerThread^ T = gcnew TimerThread; AliveCheck.SleepTimeMS = 2000; AliveCheck.ModuleName = "the first"; AliveCheck.WhoAmI = 0; Thread^ first = gcnew Thread(gcnew ParameterizedThreadStart(T, &TimerThread::WorkerThread)); first->Start(AliveCheck); // add more threads until i have nine AliveCheck.SleepTimeMS = 2000; AliveCheck.ModuleName = "the ninth"; AliveCheck.WhoAmI = 9; Thread^ nine = gcnew Thread(gcnew ParameterizedThreadStart(T, &TimerThread::WorkerThread)); nine->Start(AliveCheck); } }; } Hints, helpful pointers or code is much appriciated. Cheers, Andreas Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 8
    - MVP Hi: How we can get the MVP certification Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 9
    - Disable Build Log Is it possible to disable the creation of the build log I never read this log and I hate waiting the extra .0000005 seconds for it it to write. I'm talking about : Build log was saved at file://c:\Documents and Settings\UserName\My Documents\Visual Studio 2005\Projects\CS2\Lab_2\Debug\BuildLog.htm Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 10
    - Virtual inheritance Hello everyone, I have learned public/private/protected inheritance, but what is virtual inheritance Here is the sample, class Usable : public virtual Usable_lock http://www.research.att.com/~bs/bs_faq2.html#no-derivation thanks in advance, George Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 11
    - relinking RTM libraries for VS2005SP1 Hello.I cannot relinking CRT libraries (msvcr80.dll, ...) due to unhandld.obj. This obj is not generated during compiling. I used original makefile from VS2005 SP1. Can you help me. Thanks. Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 12
    - Function name conflict with ENUM name Suppose I have a ENUM T_MuxPos_type, where T_MuxPos_type{fixed;flexible;}. While I am coding, I have T_MuxPos_type Mux_pos. When Mux_pos = fixed, I have no problem with gcc but a compilation error with mvs2005: c:\mvs2005\bs_module\source\config.cpp(1925) : error C2872: 'fixed' : ambiguous symbol could be 'c:\panliu_bs\mvs2005\bs_module\source\declareenum.hpp(43) : T_MuxPos_type_E fixed' or 'c:\program files\microsoft visual studio 8\vc\include\ios(183) : std::ios_base &std::fixed(std::ios_base &)' If I solved this problem by Mux_pos = T_MuxPos_type::fixed, gcc compiler will complain about it. So what is the classic method to get rid of this ambigurity I seems to me I should use namespace to solve it, but I don't name how to use it against ENUM. Thanks! opera100 Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 13
    - Compiler bug? // Compiler Bug Example.cpp -- produces incorrect output in Visual Studio 2003 and 2005 for me // clay.s.douglass_at_intel com // #include <iostream> using namespace std; #include <conio.h> class VAddr { public : unsigned structure:5; unsigned offset:29; }; typedef union { struct { unsigned cmd:2; // 0 = write, 1 = read, 2-3 reserved unsigned reqId:5; unsigned lenCode:2; // 1 = 8 bytes, 2 = 16 bytes, 3 = 32 bytes, 0 = reserved; VAddr va; }; unsigned long long ll; } MemCmd; typedef struct { unsigned reqId:5; unsigned long long data; } MemData; int main() { //int i=0; MemCmd writeCmd = {1,2,3,{4,0}}; cout << "should be 4 is " << writeCmd.va.structure << " should be 0 is " << writeCmd.va.offset << endl; MemData d = {writeCmd.reqId,4}; MemCmd readCmd = {1,2,3,{4,0}}; cout << "should be 4 is " << readCmd.va.structure << " should be 0 is " << readCmd.va.offset << endl; /* prints: should be 4 is 4 should be 0 is 0 should be 4 is 6 should be 0 is 2 */ getch(); return 0; } Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 14
    - Read VGA Palette Hi I am trying to read the VGA palette color table using the following code in c: #include <limits.h> #include <stdlib.h> #include <string.h> #include <conio.h> #include <ctype.h> #include <stdio.h> #include <dos.h> #ifdef __cplusplus extern "C" { #endif //#include <iostream> //using namespace std; typedef struct RGB_t{ unsigned char r; unsigned char g; unsigned char b; unsigned char a; }RGB_t; typedef RGB_t Palette[256]; /*void SetMode13h(void) { union REGS regs; regs.w.ax = 0x0013; int386(0x10, &regs, &regs); }*/ void GetPalette(Palette pal, int startColor, int endColor) { int index; /* Set the palette data */ for (index = startColor; index <= endColor; index++) { outp(0x3C7, index); pal[index].r = inp(0x3C9); pal[index].g = inp(0x3C9); pal[index].b = inp(0x3C9); } } int main() { int i; int n; Palette pal; GetPalette(pal,0,256); printf( "Data display \n" ); printf( "Rea Green Blue\n" ); for (i=0;i<256;i++) { printf( "%u %u %u\n" ,pal[ i ].r,pal[ i ].g,pal[ i ].b); } getchar(); return 0; } #ifdef __cplusplus }; #endif and i have this error when i compile it in VC++ 8 1>Linking... 1>P_test1.obj : error LNK2019: unresolved external symbol _inp referenced in function _GetPalette 1>P_test1.obj : error LNK2019: unresolved external symbol _outp referenced in function _GetPalette 1>C:\Documents and Settings\User\Desktop\Reem\Thesis\Videocrd\palette1\Debug\palette1.exe : fatal error LNK1120: 2 unresolved externals any suggestions please Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 15
    - Is there a recommended standard name for a C++/CLI member function to free resources? I have just been learning about finalizers in C++/CLI and saw quite a bit of sample code that duplicated the same resource-freeing code in both the destructor and finalizer. It seems obvious to me that I should put the resource-freeing code in a single place -- another private member function (see sample code at the end of this message). So I have to questions: Am I doing the correct thing in this sample code Am I missing any important concept Is there a recommended standard name for the C++/CLI member function to free resources Many thanks for your help! - Kevin Hall ref class Resource { private: // Is there a recommended standard // name for this member function void FreeResources() { Console::WriteLine(L"Freeing resources..."); } public : virtual ~Resource() // IDisposable { FreeResources(); } protected : !Resource() // Finalize { FreeResources(); } }; Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 16
    - erro c2059 while migrant project from vc6.0 to vc2003 When I migrant the project from vc6.0 to vc2003 and rebuild it, there's always a 'C2059 newline' erro. One of the source file is as follows: /////////////////////////////////////////////////////////////////////////////// // Imports #import "c:\program files\common files\system\ado\msado15.dll" no_namespace rename ( "EOF", "adoEOF" ) #import "c:\program files\common files\Microsoft Shared\CDO\cdoex.dll" no_namespace #import "c:\program files\exchsrvr\bin\cdoexm.dll" no_namespace #include "cdoexstr.h" #include "cdoexerr.h" #include <Clusapi.h> ....... the copiling erro is error C2059: syntax error : ��newline�� fatal error C1903: unable to recover from last error, compilin Any one who can help me Thanks a lot Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
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  - 1
    - Calling C++ dll from C# I am trying to use a C++ dll in my C# application but unsuccessul. Here is what I have done: 1. The C++ code was developed using open BSD. 2. I made a C++ CLR dll using visual studio 2005 - "tc.dll" 3. In my C# application, I add the "tc.dll" as a reference from the solution explorer 4. I tried to instantiate the class of tc.dll using myClass mc = new myClass(); The C# program can not find the class at all. I assumed that since it is built as a assembly dll, all the class and their member functions in there should be visible if referenced. I am very new to C# and .Net, and not sure if what I am doing is indeed in the right direction. Please help. Thanks a lot, -Sue Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 2
    - SendKeys in C++ Hello everyone, Is there an equivalent to SendKeys.Send in C++ I have looked into keybd_event and SendInput, but to my knowledge you can only send one key at a time with those functions. Thanks for any help. Edit: I'm not using the .Net Framework so I can't use any of that stuff. Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 3
    - Closed Captioning on Amcap Hi all, I am not sure whether this is the right place to post this query, but here goes.. Can anyone help me to get Closed Captioning to working on Amcap. Wheever I use the "CC" option in Amcap, it throws an error saying "Cannot render closed captioning". Am I missing some filters that amcap is not able to enumerate Any help would be appreciated. Thnx in adv, Geek Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 4
    - Webbrowser control's BeforeNavigate2 event question Hi all Just want to ask how to retrieve the string( ) value of the TargetFrameName parameter in webbrowser control's BeforeNavigate2 event: void CMyClass::BeforeNavigate2Explorertestnews(LPDISPATCH pDisp, VARIANT* URL, VARIANT* Flags, VARIANT* TargetFrameName, VARIANT* PostData, VARIANT* Headers, BOOL* Cancel) { CString strLink = (CString)URL->bstrVal; AfxMessageBox(strLink); // it works, the URL is displayed in the messagebox CString strTargetFrameName = (CString)TargetFrameName->bstrVal; // it displays a blank messagebox even if the href's tag target's attribute is set to // "_self" AfxMessageBox(strTargetFrameName); } The goal here is to retreive the attribute(_blank, _self, etc) of the target tag of the active link in the webbrowser control when clicked. For ex: < a href= http://testsite123492.com target="_self"> Thank you k Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 5
    - Maximizing compatibility of VC++ 2k5 projects Hello ALL, I've got following question: how can I setup up the C++ compiler in VS2005 to compile applications with compatibility across win NT family... all applications I build can run only on XP SP2, failing to run under Win 2k and XP without SP2 (throws errors like "Invalid Win32 application, please reinstall"). I actually need to run my applications on Win NT family or at least on Win 2k. I use clean C++ and Win32 functions (all compatible with lower Win versions). Thanks in advance. Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 6
    - Finding in network service "File and Printer Sharing for Microsoft network " is installed Is there a way pogramatically,that I can determine if the network service "File and Printer Sharing "is enabled in a system Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 7
    - Still having problems with printing out INT64 integers Still having problems with printing out INT64 integers I am still having problems with this code. This prints out a number, but it's not exactly what I want. I need to print out an INT64 number that is in sync all the way through. For example: The hex: FF D8 FF E1 1E 63 45 78 is the first line of the file test.jpg. I would like to display its integer (unsigned) value: 18435766416983672184 But what it does it prints out is the number for hex 78 45 63 1E E1 FF D8 FF, which is 8666442042236197119. I thought this would be ok, but later when I want to do more stuff to the program it won't work. There has to be a simple way of reading in 64 bits of data and then output the decimal value into a .txt file. Please can someone help me! This is the code I have now, but if you can suggest a better way, I��ll take it! #include <stdio.h> #include <stdlib.h> int main( void ) { unsigned __int64 Oneline; char buf[ 8]; FILE *INfptr; FILE *OUTfptr; if ((fptr = fopen( "test.jpg" , "rb" )) == NULL ){ printf ( "Cannot open file\n" ); exit ( 1 ); } if ((fptr = fopen( "Kounter-report32.txt" , "w+" ))== NULL ){ printf ( "Cannot open file\n" ); exit ( 1 ); } do{ fread ( buf, 1, sizeof (buf), INfptr ); // fread(reinterpret_cast<char*>(&Oneline), 1, sizeof(Oneline), INfptr); (WAS using serveral different methods of reading and writing, they worked but not the way I need it too.) fprintf(OUTfptr,��%I64u/t��, Oneline); }while (!feof (INfptr)); fclose ( INfptr ); fclose ( OUTfptr ); } Thank you once again, and sorry for troubling you guys so much James Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 8
    - [C++/CLI] STL/CLR's Vector Problem. Hello, sorry if this isn't the good forum to post my question to. I have a STL/CLR vector called "vecteurMot": Code Snippet private: cliext::vector<mot^>^ vecteurMot; then I do a pusback to test it : Code Snippet vecteurMot->push_back(gcnew mot("Mot FR : ", "Mot JP : ", "Ceci n'est qu'un exemple" )); Everything compile, I run it then get a debugger error: "Additional information: The referenced object isn't defined to an object instance" (That might be wrong, tried to translate from french to English) Then I press Break, and the debugger show me those line : Code Snippet size_type size() { // return length of sequence return (_Mysize); } Code Snippet void push_back(value_type _Val) { // insert element at end insert_n(size(), 1, _Val); } in the Vector file. Hope you can help me. Thanks. Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 9
    - Wow i am suprised i cant find this.... I searched google i searched here and i searched mIrc and no one seems to know how to do this, they tell me to use a difrent compiler but i love microsoft and could not do that. I am sure you guys probably covered it some where but i can't find it so here goes. I use visual studio 2005 standard edition. I recently finished learning the core language of c++ and am moving on to implement that knowledge with win api in which i am trying to learn now. I am using this tutorial to learn win api http://members.fortunecity.com/harrycik/files/Forgers.htm. Obviously i cant use the old new >> console application >> empty project because it doesn't work, i tryed new >> win 32 project >> pre-compiled header and empty project but none work. This is the source I am trying to compile : #include <windows.h> int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) { MessageBox(NULL, "Goodbye, cruel world!", "Note", MB_OK | MB_SYSTEMMODAL); return 0; } and usually i have to add "stdafx.h" but i always get the error error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'const char [22]' to 'LPCWSTR' please help me i am so frustrated and just want to get making games again. Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 10
    - Win 32 timer - OnTimer not called I am a newbie to VC++ and I am trying to use a win32 timer (with MFC and VS 2005) . The problem is that the OnTimer function is never called. Here is part of the code that I've been trying to implement: void CxxDlg: nBnClickedStart() { //Create a Timer utmrTx = SetTimer(1, 1000, NULL); } void CxxDlg: nBnClickedStop() { // To Stop the timer KillTimer(utmrTx); } void CxxDlg: nTimer(UINT nIDEvent) { } I do not get any compile time error and when I debug the code, I see that uTmrTx is set to 1. Only issue is that the OnTimer function is never called. What am I doing wrong Thanks, IdleBrain. Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 11
    - Win32 Application Wizard Problem in VS2005 under Vista When I try to create a new C++ static library project, the Application Wizard's welcome screen that has both 'overview' and 'application settings' is completely disfunctional. Hyperlinks, 'Finish' and 'Cancel' buttons do nothing. Also some text is missing from the dialog (the current application settings bullets are blank). The only way out is to close the dialog using the red cross on the top-right-hand corner. Even the help button doesn't work. Obviously, I cannot create any new projects. I have installed VS2005 Enterprise under Vista Home Pro. I have also installed VS2005 SP1 as well as the service pack for VS2005 under Vista. I run VS2005 with administrative privilages. I don't have any problems with C# and ASP.NET projects. I even tried VS2008 Beta2 but had the same problem. One other symptom I see is when comparing file versions using VSS. One of the compare screens is normally blank until I force an update by selecting the text or covering it with another window. I am using SourceSafe version 8.0. I will really appreciate any help. Thanks in advance, Farhad Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 12
    - TreeView Control HitTest doesn't work Hi all. i have treeview control on my dialog. TreeView with cechkboxes. I need to find, on wich item user click. In NM_CLICK i try to found item through HitTest method: 1) Getting current Cursror coords: GetCursorPos(&pt); 2) Convert to Client coords: ScreenToClient(&pt); 3) And trying to recieve HTREEITEM through HitTest: HTREEITEM hItem = pTree->HitTest(pt,&uFlag) void CHitTestDlg::OnNMClickTree1(NMHDR *pNMHDR, LRESULT *pResult) { CTreeCtrl* pTree = (CTreeCtrl*) GetDlgItem(IDC_TREE1); UINT uFlags; CPoint point; HTREEITEM hItem; GetCursorPos(&point); ScreenToClient(&point); hItem = pTree->HitTest(point,&uFlags); } hItem will be 0x00000000... why so plz help:) Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 13
    - Debuggin Hi, when I am trying to debug, now and then Visual Studio opens a Assembler file to debug, I don't want that, eaven when it is my own code it opens a dissambly file. What is wrong thanks in advance, Patrik Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 14
    - How do i view external source dependancies in 2005 .Net? I am porting legacy code from Visual Studio C++ version 6 to 2005 .Net and i would like to know how do I view the external source dependancies in the solution explorer as you can in VS 6 These are usually header files that are declared in a C++ module but not part of the header folder of the project. I've looked all over the IDE / help to no avail, can anyone help me Thanks in advance! Tag: Visual C++ General Porting a project from C to Unmanaged and Managed C++ Visual C++
  - 15
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aemami

I hope someone is in the same situation as me - at least to share in my misery.

At our company, we have an existing codebase that consists of about 10 projects. All of the projects are a mix of C and unmanaged C++. We are using VS2005. The projects are not set up to have any /CLR support.

What I want to do is, convert all the .C files to .CPP. Once all the files are unmanaged C++, then they should be able to interact with Managed C++ according to C++ Interop (this is the assumption I am operating under).

My question is ... how straightforward of a task is this, what issues might arise, and is it possible and/or practical

My other option is to use PInvoke to make a C# wrapper for everything, but there is a LOT of code and using PInvoke to wrap everything sounds tedious and error-prone.

Thanks

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Re: Visual C++ General Porting a project from C to Unmanaged and Managed C++

crescens2k

That is one of the nice things, C++ was written to be compatible with C, so there should be very few problems arising.

Once you are past that stage, working with the CLR is easy. You can interact with C++/CLI with little more than compiling the source file with the /clr option.

You may want to read the native/managed interoperablility guide in the MSDN.

http://msdn2.microsoft.com/en-gb/library/zbz07712(VS.80).aspx

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