Visual C++

Page 172




  • Topics
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  • Using managed dll from unmanged C++
    by akdpr
    2 Replies
    Last post by Bite Qiu - MSFT
      • I have got a vb.net dll which has following Public Class MyClass // Constructors Public Sub New () // Methods Public Function MessageFromClient ( ByVal Message As String ) As Integer End Class I need to access this in my unmanged C++ application. I am new to VB and I don't what is the correct way to export a method from a VB.net assembly.
  • VS2005 Implement an existing IDL
    by Vedran211
    10 Replies
    Last post by Vedran Bratic
      • Hi, I was given an IDL file and was asked to implement it. How can I create a Project with VS2005, load the IDL somehow and let VS2005 generate the classes with empty methods. After that I just have to implement each method. That should actually be possible, because all the information about the classes already exists in the IDL-file, right Can somebody help me or give me a hint Thanks, Vedr
  • Allocation problem
    by Hilikus
    14 Replies
    Last post by Simple Samples
      • I'm using VS 2002, and I'm having an allocation problem. When the program tries to allocate a new block, access violation occurs, but not in my code and not always. Debugger says the error is in the CheckBytes(...) function, and as far as I can tell, it's a function that is called when the 'new' operator is used (when I break the execution, VS opens the dbgheap.c file). I sent my project to someon
  • Returning a ref class nullptr from a generic function
    by Gordon Watts
    6 Replies
    Last post by Gordon Watts
      • Hi, I'm a bit stuck. I see references to the answer to this in other posts, but I don't quite get it. I'd like the following prototype to comple: generic < class T> where T: ref class T ^GetBestObject ( const ::TObject *obj); with or without the constraint on T. I thought that by adding the constraint I would get around the error " error C3229:
  • Question about Base64Encode
    by JustMe565998
    1 Replies
    Last post by Bite Qiu - MSFT
      • Hi, one question about Base64Encode : char * target = new char[cLng]; int target_len = Base64EncodeGetRequiredLength(binVec.size()); Base64Encode( (const BYTE*)&binVec, binVec.size(), target, &target_len ); looks like this Code is ok, but now i need to put the result in 'target' into a BSTR. Any suggestions THX in advance JustMe
  • CWinApp destructor
    by Bill_Thompson
    2 Replies
    Last post by Sheng Jiang
      • Why doesn't the CWinApp class have a destructor
  • VS .Net 2005, how to disable intellisense...
    by ChandraP
    14 Replies
    Last post by Boris Jabes
      • Hi I am really frustrated with the performance of VS .Net 2005. This is because I always see at the bottom "updating intellisense..." and it uses 60% to 70% of CPU. How to disable this updating of intellisense... Please this is making Visual studio unusable. Thanks Chandra
  • string in array
    by procpass
    7 Replies
    Last post by Sam Wane
      • Hi, i want to insert string into array. how can i do this ex; int main() { char x= '0'; bitset<8> b1(x); char name[] = {'e','g','e','m','e','n'}; char bin_name[7][32]; for(int i=0;i<6;i++){ x = name ; bitset<8> b1(x); cout<<b1<<" "; bin_name [32]= b1; // its related my question, ii know that this can only include one character. }
  • cin();
    by datpin
    5 Replies
    Last post by datpin
      • i am beginer of c++ so i have some thing int a; cout<<"hello::"; cin>>a; cout>>a; when run output hello: 0 why d=0
  • why the fread function is crash?
    by houwenqiang
    3 Replies
    Last post by crescens2k
      • I have use one Dll that maked by another.this DLL is compiled with /MT.in this DLL ,he receiver one FILE pointer from my own program,then call the function fread to read data fron file . my program is compiled with /MT also, I send the stdin to the DLL.but when the function fread is running ,it is crash. I check my code and the dll code ,all have not error . so I do not get the reason of
  • Thread Sleeping and Hook Callbacks
    by Zyphon
    14 Replies
    Last post by Aleksandr Tokarev
      • Hey, I'm working on a Win32 application that doesn't have its own window, but listens to keys typed globally via a LLKeyboardHook and moves the mouse every couple of seconds. In order to keep the mouse from moving all the time, I have the thread sleep for a few seconds in between mouse moves, but during this time the hook callback doesn't execute, which makes sense because the thread is sle
  • VS .Net 2005, how to disable intellisense...
    by ChandraP
    14 Replies
    Last post by Boris Jabes
      • Hi I am really frustrated with the performance of VS .Net 2005. This is because I always see at the bottom "updating intellisense..." and it uses 60% to 70% of CPU. How to disable this updating of intellisense... Please this is making Visual studio unusable. Thanks Chandra
  • Member offsets in derived classes
    by Sam Hobbs
    14 Replies
    Last post by Sam Hobbs
      • I expected the offset of member m_RecordSize to be zero for both classBase and classDerived in the following but instead m_RecordSize is at offset 4 within classDerived. Is this due to the vtable in classDerived For what it is worth, the reason this is important is because I have many more classes derived from classDerived that I am writing to disk so I need to ensure I understand the format of
  • IDiaSymbol::get_callingConvention?
    by BarryTannenbaum
    5 Replies
    Last post by BarryTannenbaum
      • I modified the Dia2Dump sample application to add the following code to the bottom of the PrintFunctionType function: DWORD dwCallConv = -1; HRESULT hr; hr = pSymbol->get_callingConvention (&dwCallConv); if (S_OK == hr) { wprintf (L" [%d] ", dwCallConv); } I then dumped the version of vc80.pdb generated by building the sample. I *never* saw a successful return from get_ca
  • IWebBrowser::Stop doesn't work
    by SaloS
    1 Replies
    Last post by Sahir Shah
      • In some cases IWebBrowser :: Stop doesn't work. I.e. before call this method I call get_Busy and it returns true, and after IWebBrowser :: Stop method get_Busy returns true. I need to stop any navigation activities because I need to close window but I cannot. Because when I call DestroyWindow application hang up in method SetClicentState(NULL) in COleControlSite :: ~COleControlSite</FONT(
  • linking errors
    by coder007
    4 Replies
    Last post by coder007
      • hi all.. i am getting following linking errors during migration from vc6 to vc8.. warning LNK4221: no public symbols found; archive member will be inaccessible ( in debug only, no problem in release ) warning LNK4017: DESCRIPTION statement not supported for the target platform; ignored ( in both debug and release ) can any one please help thnx in advance..
  • Calling C++/CLI dll from C#
    by cgraus
    4 Replies
    Last post by cgraus
      • I work on an app that controls a Canon camera in C#. Until now, I used a common C# wrapper for their SDK. They have a new SDK. So, I wrote a wrapper in C++/CLI. But, it stopped working, it gives an error : The specified module could not be found. (Exception from HRESULT: 0x8007007E). I found on my notebook that creating a vanilla C++/CLI dll with a simple method, and calling it from C#, compile
  • How to link..?
    by hanumanth
    1 Replies
    Last post by Damien Watkins - MSFT
      • Hi all, I am having a Vc++ application containing several projects. I am compiling these each and individual projects using process class in c#. After compiling each project obj files are creating.After that how to link the compiled projects to make executable file Any ideas plz... Thanks --Hanu
  • Visual c++ 2005 error: C2597
    by WILLIAMXXX
    4 Replies
    Last post by WILLIAMXXX
      • Hello I have a label and a timer. For the label have I the code: this ->label1->Text(System: ateTime: econd); I click on Debug. I have then the next error: Error 1 error C2597: illegal reference to non-static member 'System: ateTime: econd' What go here wrong Can you me help Thanks
  • Compiler very slow and termination problems
    by herrerik
    2 Replies
    Last post by Bite Qiu - MSFT
      • Hi I just changed from vc++6.0 to vc++2005 PRO so the difference is big. I have some questions. 1. The same code takes more then three times to compile (!) compared to old 6.0. Is it doing something extra or is it badly coded Can i disable this extra it does to redoce time for compiling as i did fine with the "light compiling" done by my old compiler (vc++6.0). 2. The program im coding d
  • Linker error undefined symbol vc ++ .net 2003 can you help me solve
    by subramani_ponnusamy
    3 Replies
    Last post by Damien Watkins - MSFT
      • // The following code // returns error Linking... test.obj : error LNK2019: unresolved external symbol "public: virtual class IDCossapYPositions * __thiscall IDCossapYAxis::getPositions(void)" ( getPositions@IDCossapYAxis@@UAEPAVIDCossapYPositions@@XZ) referenced in function "public: class IMotorPositions * __thiscall IDCossapYAxis::getPositions(void)" ( getPositions@
  • cl : Command line error D8003 : missing source filename
    by subingya
    2 Replies
    Last post by Jonathan Caves - MSFT
      • Hi all i faced the following error in VC++ 2005: Build Log Rebuild started: Project: FilteredSubscribe, Configuration: Debug|Win32 Command Lines Creating temporary file "c:\Program Files\StreamBase Systems\StreamBase.5.0\sample\client\Debug\RSP00001E24363568.rsp" with contents [ /Od /I "C:\Program
  • How to acces picture in the resources
    by idos
    3 Replies
    Last post by Sarath.
      • Hi, I want to add pictures to my project so I go to Project->resource->add resource than I import the picture I want. But now the problem is, how to access my picture from my class for example my picture is pict.bmp, so after I added it to resources how to call it Thank you in advance :D
  • Embedding manifest takes forever while building dll
    by one seventh sword
    1 Replies
    Last post by Ted.
      • Hi, I am using visual C++ 8.0.50727.42 When I try to build a dll, the output window shows: Embedding manifest And it takes forever. Any idea
  • error LNK2001: unresolved external symbol
    by L_elfe
    4 Replies
    Last post by Artral
      • Hello everyone, I know that there is many post on this type of error but I didn't find any solution to my problem on them. I developped a code under Linux and I need to have an windows executable and the .dll. Code is write in C (I already try to add extend "C" { ...} ). Under Linux, all work well but when I create a project on Visual Studio, I didn't succed to compile. I wrote a little