C2664: cannot convert... What is going on here?

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  - 1
    - CToolBar Length problem Hi, there My toolbar has 24 items, and each of them has size (43, 49) as button size, size (35, 19) as image size. Only about 15 items are shown correctly. The others are chopped after a | symbol My code is m_wndToolBar.Create(this, WS_CHILD | WS_VISIBLE | CBRS_TO | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) m_wndToolBar.LoadToolBar(IDR_TOOLBAR) m_wndToolBar.SetButtonText(0, _T("Open 0")) m_wndToolBar.SetButtonText(1, _T("Save 0")) m_wndToolBar.SetButtonText(2, _T("ZoomIn 0")) ............................................................................. m_wndToolBar.SetSizes(CSize(43, 49), CSize(35, 19)) What is the problem here? How to extend the toolbar length Thanks in advance Gary Tag: C2664: cannot convert... What is going on here? Tag: 228895
  - 2
    - mailto with attachment problem What i'm trying to do is programmatically bring up a new message for the default mail client with an attachement already attached. I've successfully been able to bring up a new message with an e-mail address, subject, and body, but i can't attach a file no matter what i try. Some things seem to have no effect, and others seem to cause outlook to bring up a messagebox (Command line arguement is not valid). Here's some mailto: commands i've tried using in shell execute mailto:khorvath@vt.edu?subject=my report&body=see attachment&attachment="\\Gamingmachine\download temp\invoice.html" mailto:khorvath@vt.edu?subject=test&attachment=\\Workpc1\c$\DownloadTemp\redist.txt mailto:khorvath@vt.edu?subject=test&attachment="\\Workpc1\c$\DownloadTemp\redist.txt\" mailto:khorvath@vt.edu?subject=test?&attachment=\\Workpc1\c$\DownloadTemp\redist.txt mailto:khorvath@vt.edu?subject=test?&attachment="\\Workpc1\c$\DownloadTemp\redist.txt\" mailto:khorvath@vt.edu?subject=test?attachment=\\Workpc1\c$\DownloadTemp\redist.txt mailto:khorvath@vt.edu?subject=test?attachment="\\Workpc1\c$\DownloadTemp\redist.txt\" mailto:khorvath@vt.edu?subject=test&attachment="\\Workpc1\DownloadTemp\redist.txt\" mailto:khorvath@vt.edu?subject=test&attachment="c:\DownloadTemp\redist.txt" Of course the format in my cpp file is ShellExecute(NULL,"open","mailto:khorvath@vt.edu?&attachment=\"c:\\redist.tx t\"","","", SW_SHOW ); I've tried more but you get the idea that i've tweaked almost every aspect of this but can never get an e-mail with the attachment to come up. I read one article that said allowing attachments through mailto: is a security risk so it doesn't work. Is this true? I appreciate any information anyone can provide. Thank you very much in advance. Kenji Horvath Tag: C2664: cannot convert... What is going on here? Tag: 228894
  - 3
    - DLL Help I mostly program in C# and am having to create a C++ DLL for another project. I'm having problems with the function names of the dll becoming mangled after compilation. I have searched the newsgroups and only found to use the following line. #define EXPORT extern "C" __declspec (dllexport) EXPORT BOOL CALLBACK TESTFUNC(); However, this is not working. The function names are still becoming mangled. I'm using Visual Studio .NET 2003. Any help is greatly appreciated!! Tag: C2664: cannot convert... What is going on here? Tag: 228891
  - 4
    - USB driver devlopment environment I am a newbie to USB driver development, and at the moment I am to be developing a small program to read data from a USB device - which is effectively a drive I have been looking through the classes and methods for such a project, and header files are listed such as usb100.h and usbscan.h, but I am having difficulty in compiling a project (in Visual c++ .net) that will recognise the functions I am trying to use, e.g GetDescriptor(), and not come come up with all sorts of errors related to the header files themselves, let alone any programming I am trying to do I am developing on winXP, and have installed the DDK for XP Can you help me with this at all? I have looked for tutorials to get me started on this project, with no luck Thanks Tag: C2664: cannot convert... What is going on here? Tag: 228888
  - 5
    - Namespaces: Initializing variables Hi! How can I initialize variables in a namespace? This is what I thought should work: <namespace.h> namespace Aname { DWORD avariable } <namespace.cpp> DWORD Aname::avariable = 0; but apparantly the compiler thinks I am trying to declare a new variable with the same name as in the .h-file. I also know that I can do this: <namespace.h> namespace Aname { DWORD avariable = 0; } but when I include namespace.h in various other .cpp files, i get for example othersyde.obj : error LNK2005: "char (* Global::folder)[260]" (?folder@Global@@3PAY0BAE@DA) already defined in COSGlobalDecl.obj PLEASE help... Tag: C2664: cannot convert... What is going on here? Tag: 228884
  - 6
    - Simple question! int a = 10 // Now how to convert this number to a string? (char* /* Thanks in advance Joe */ Tag: C2664: cannot convert... What is going on here? Tag: 228871
  - 7
    - Can I put #ifdef inside a macro with parameters? I am writing a macro like this #define MACRO(a,b) #ifdef _DEBUG a+b #endif But on compiling I get 2 errors : "Expected macro formal parameters It seems to me that compiler is interpreting #ifdef and #endif as macro parameters Any workaround for this problem? Or can we put precompilers inside a c++ macro TI Sunil Tag: C2664: cannot convert... What is going on here? Tag: 228866
  - 8
    - Bug when generating some inlined (intrisic) strcat in vc 7.1 This is very easy to reproduce, just compile the sample code below (C or C++, it doesn't matter) with /O2 or /Ox option. Just adding a #pragma function(strcat) or compiling with /O1 or /Od removes the bug. I didn't try other version of Visual C++ than the one from Visual Studio.NET 2003 Entreprise Edition (french version, from MDSN subscription). Conditions to make this bug happen: 1) an inlined strcat (intrisic) and 2) first parameter of the inlined strcat is a not-inlinable function call returning the destination string pointer and 3) second parameter of the inlined strcat isn't a literal constant string (the inlined strcat must have to do an inlined strlen on it, the optimizer musn't be able to find a constant length). // BEGINNING OF SAMPLE #define WIN32_LEAN_AND_MEAN #include <windows.h> #include <stdio.h> #include <string.h> // making the variables below global prevent optimizations that "hide" the bug char sz1[256] = "abc"; char sz2[] = ".ghi"; int main (int argc, char **argv) { // lstrcat (below) instead of a second strcat to prevent its inlinning, because // the lstrcat replaces a more complex function from a DLL of mine. // The code generated for the inlined strcat is realy very bad ! strcat(lstrcat(sz1, "def"), sz2); // sz1 is (far) large enough for that // should print "abcdef.ghi" but the lstrcat make an exception ! printf("%s\n", sz1); return 0; } // END OF SAMPLE The generated code (with my comments) is plainly wrong: _main PROC NEAR ; Line 15 ; THE INSTRUCTION BELOW APPEAR TOO SOON push OFFSET FLAT:??_C@_03BHEEIFFN@def?$AA@ ; push second parameter of lstrcat ("def") mov eax, OFFSET FLAT:_sz2 ; get second parameter of strcat ; THE INSTRUCTION BELOW APPEAR TOO SOON TOO push OFFSET FLAT:_sz1 ; push first parameter of lstrcat (sz1) ; inlined strlen(sz2) mov edx, eax $L20160: mov cl, BYTE PTR [eax] inc eax test cl, cl jne SHORT $L20160 ; OOPS, WRONG ! backup ebx/esi AFTER pushing parameters for lstrcat and before ; calling lstrcat ! push ebx push esi sub eax, edx ; end of the inlined strlen(sz2) ; STILL WRONG ! same reason as above push edi ;THIS (WAS ABOVE) SHOULD BE HERE: push OFFSET FLAT:??_C@_03BHEEIFFN@def?$AA@ mov esi, edx ; backup strlen(sz2) value ;THIS (WAS ABOVE) SHOULD BE HERE: push OFFSET FLAT:_sz1 mov ebx, eax ; backup sz2 pointer ; lstrcat below is COMPLETELY LOST with the random values pushed from edi and esi ! ; => exception call DWORD PTR __imp__lstrcatA@8 ; inlined strcat, skip existing chars in the (never) returned pointer to sz1 from lstrcat dec eax $L20161: mov cl, BYTE PTR [eax+1] inc eax test cl, cl jne SHORT $L20161 ; and copy sz2 at the end of sz1 mov ecx, ebx shr ecx, 2 mov edi, eax rep movsd mov ecx, ebx and ecx, 3 ; Line 17 push OFFSET FLAT:_sz1 push OFFSET FLAT:??_C@_03OFAPEBGM@?$CFs?6?$AA@ rep movsb call _printf add esp, 8 pop edi pop esi ; Line 18 xor eax, eax pop ebx ; Line 19 ret 0 _main ENDP Tag: C2664: cannot convert... What is going on here? Tag: 228864
  - 9
    - convert character again Hi again, some day ago I asked how to convert a char and get its unicode value. The proposed solution was to call WideCharToMultiByte/MultiByteToWideChar Now, I'd rather not call the APIs directly, so I thought another solution: the following works perfectly. typedef wchar_t unicode_t; inline unicode_t widen(const char c) { return std::use_facet< std::ctype<wchar_t> > ( std::locale("") ).widen( c ); } My questions: 1) does it work by chance or... by design? is a wchar_t assumed large enough to hold a unicode value? It looks like there ARE some unicode chars whose code is > FFFF if there's a tight relation between wchar_t and unicode values, I think 'ctype::widen' may be assumed to convert to unicode, isn't it? 2) I read in MSDN there's a UTF-8 codepage named "65001". does it mean that std::use_facet< std::ctype<wchar_t> > ( std::locale(".65001") ).widen is able to read UTF-8 and convert to unicode? -- The set of solutions is never empty. Two solutions together form a new problem. -- Mycroft Holmes Tag: C2664: cannot convert... What is going on here? Tag: 228857
  - 10
    - Create static library When creating a static library, VC++ 6 generates several .obj files and one .lib file. Besides adding the header file of the library into the client project, which other files should be also included into the client project so that the class defined in the static library can be used by the client? Thanks! Tag: C2664: cannot convert... What is going on here? Tag: 228850
  - 11
    - cpp file lost During compiling or saving occsainally we get "filename.cpp does not exists. Do you want to overwrite with new one" In fact earlier saved copy is lost We have vc6.0 with sp 5 Tag: C2664: cannot convert... What is going on here? Tag: 228849
  - 12
    - static global variable How many instance of the variable will be produced if I declared a static global variable in one header file, and two .c / .cpp files included the header file? Example as the following: <abc.h> static int abc = 1; ... <abc1.c> #include "abc.h" void ChkAbc1() { int* Addr = &abc; } ... <abc2.c> #include "abc.h" void ChkAbc2() { int* Addr = &abc; } ... One more question, if a static global variable declared in a .c / .cpp file, can I extern this variable on the header file? Example as the following: <abc.h> extern int abc; ... <abc.c> #include "abc.h" static int abc = 1; ... <main.c> #include "abc.h" void main() { int* Addr = &abc; } ... Thanks in advance, Best Regards, Elliott Tag: C2664: cannot convert... What is going on here? Tag: 228840
  - 13
    - Visual C++ v1.52 Hi to all Can you help me find an installer for MS Visual C++ ver. 1.52, a download site or ftp.. Thanks in advance Allen Tag: C2664: cannot convert... What is going on here? Tag: 228839
  - 14
    - Exporting VC char * to dll and call it back from VB I am converting 3 c functions into dll... as follow. char* _stdcall Dummy3(char *w1, char *w2) { return "w1"; } char _stdcall Dummy2() { return 'a'; } int _stdcall Dummy() { return 1234; } and 1 def file as follow. LIBRARY MYDLL EXPORTS Dummy @1 Dummy2 @2 Dummy3 @3 now i am using VB Declare Function Dum2 Lib "Testing.dll" Alias "Dummy2" () As String Declare Function Dum3 Lib "Testing.dll" Alias "Dummy3" (ByRef w1 As String, ByRef w2 As String) As Integer Declare Function Dum1 Lib "Testing.dll" Alias "Dummy" () As Integer Besides Dum1. All the other have failed and turn the VB down immediate. I have tried many method and done many research on web. Still cant found solution. What is happening? Thanks for help Tag: C2664: cannot convert... What is going on here? Tag: 228838
  - 15
    - How to call constructor in the constructor ??? Hello, class A { public: A(); A(int a); } A::A() { //how to instance the A(1) here } A::A(int a) { cout << a; } As in the above code, how can I add a statement that can instance the A(int) in the A() constructor ??? Eric -- ========================== If you know what you are doing, it is not called RESEARCH! ========================== Tag: C2664: cannot convert... What is going on here? Tag: 228837
  - 16
    - Thread communication in an NT service (ATL) Hi, I have written an NT service which uses multithreading. To be specific a single parent thread within the service spawns several child threads. The thing i want to do is to Post a message back to the parent Thread once the Child Thread finishes its processing. How can i post a message from the child thread to the parent thread especially when there are no Windows involved. Thanks in Advance, Srinivas Tag: C2664: cannot convert... What is going on here? Tag: 228826
  - 17
    - Windows Installer object Hi How can I use Windows Installer object in my vc++ programs? I would like to have my program to use msiexec.exe to install a .msi package. I want to know more properties (like INSTALLDIR) of the MSI object, and if possible, some sample vc++ projects on MSI Thanks Peter Tag: C2664: cannot convert... What is going on here? Tag: 228825
  - 18
    - Getting the version of the version of itself? Hello All I am creating a Win32-Dynamic-Linked Library VC+6 and I am trying to get the version of that dll from within it self. I have looked through the MSDN and couldn't find anything to do this for DLL's :( I know it can be done because I have done it before for an EXE but have forgotten. Does anyone know how to do this. Thanks in advance Paul Kirby Tag: C2664: cannot convert... What is going on here? Tag: 228819
  - 19
    - using % to get 2 digit year Hi- I'm trying to use the mod operator to convert a 4 digit year to a 2 digit one. Here is what I'm doing: WORD shortYear = 2004%2000; the result is always 4 instead of the desired 04 I don't even know where to begin with this one. I googled pretty hard, but didn't find anything informative. Thanks for any help, Steve Tag: C2664: cannot convert... What is going on here? Tag: 228814
  - 20
    - Splitter window cursor Hi, I need to hide the cursor that comes on splitter window Is there any way out Thanks Tag: C2664: cannot convert... What is going on here? Tag: 228803
  - 21
    - Strange linker-problem (LNK1179) with a template-function Hello, I have defined a template-function in a header-file, which takes a pointer to a function and a parameter for that function as template-parameter (similiar to STL's for_each): template <class Fun, class Param> void for_each_radio(CSubWindows& subWindows, Fun fun, Param param) { for (int i = 0; i < subWindows.GetRadioCount(); ++i) { (subWindows.GetRadio(i)->*fun) (param); } } The template is 100% correct, I tested it...But the problem is, it only works if I use for_each_radio only once in my code. Else I get the linker error "LNK1179: Invalid or corrupt file: duplicate comdat ...for_each_radio..." It seems like the function will be instantiated twice with the same name because I don't use the /H and /Gy compiler options...How can I solve this horrible problem? of course there are include-guards in the header and I can't put in the code in a cpp (template!)... Tag: C2664: cannot convert... What is going on here? Tag: 228797
  - 22
    - accessing the environment variables. How to access the environment variables in VC++ 6.0 console application ? Can anybody of you please give me an example for the same ? --Bansidhar Tag: C2664: cannot convert... What is going on here? Tag: 228796
  - 23
    - stuck with what looks like a compiler bug in VS.NET 2003 vs VS.NET 2002 This is going to be a little vague I'm afraid as it's hard for me to provide explicit details without a vast quantity of extra information. I've recently changed compiler from .NET 2002 to .NET 2003. I have a fairly complicated application, which is an ISAPI extension that relies on several other rather large projects (Xalan, Xerces, ICU, boost). At some point, i'm at the bottom of a pretty deep call stack, and I throw an exception which travels up a lot of it. It seems that in one particular module, a couple of the functions don't manage to unwind the call stack properly -- it always crashes in either of these two functions during the unwind sequence. It's 100% reproducible with .NET 2003 and 100% not reproducible with .NET 2002, and depending on how I've been tinkering with the code, always crashes in the same place. I've tried sprinkling some extra try () { } catch (...) { throw; } blocks around various parts of these functions. The result is that I can make the problem go away, presumably by generating different unwind code. Oh, and this only happens with a release build. Normally I'd claim responsibility for mashing memory rather than pointing at the compiler, but in the case, the application (and those things that it relies on) have been proved to be very stable. I can also make this happen with a wide variety of initial conditions (effectively doing things that would drastically change the pattern of memory allocations up to that point), pageheap /full doesn't spot anything, and if I _don't_ throw the exception, then things all work as expected, even to the point of being able to conduct stress tests that previously passed. I realise that this is a bit of a long shot, but if anyone could offer any advice on what to try or look for to be certain as to what is going on that would be great. The application is open source, so if anyone has a great deal of spare time then it should be possible to recreate it locally. I'm out of ideas other than reading the compiler generated assembly at the moment (which isn't an easy task as my asm is a bit rusty these days). If it comes to it, I guess I'll have to drop back a compiler version, which would be a pity. Thanks, Mark Tag: C2664: cannot convert... What is going on here? Tag: 228791
  - 24
    - is STL in msvc 6.0 (sp5) thread safe Hi there! We have app server written in C++ (stl is used a lot). And we use Visual C++ 6.0 compliler to built it. App is not stable when it is heavy loaded. It eather crashes or some static data in it becomes corrupted (so server stops doing his duties). We put some stuff from server into a test and with a lot of threads doing subset of usual servers work. And test crashes within minute or so. 40 threads are intensively doing allocation, populating and freeing containers such as std::map and std::set. Threads write only to their own (private) containers and there are some shared containers that are only read (via find method). So the question is: are stl containers such as std::map and std::set in VC6.0 thread safe in mentioned manner? And if they ar not - where to find the fix? --- With best wishes, Kirill. * ...chasing dreams... Tag: C2664: cannot convert... What is going on here? Tag: 228788
  - 25
    - #pragma once Hi, Just out of curiosity, is using #pragma once equivalent to using #ifndef HEADER_H #define HEADER_H ... #endif ? Thanks, Nelson Tag: C2664: cannot convert... What is going on here? Tag: 228784
- Next
  - 1
    - loading bitmaps from files Hello all, I'm writing a programme which needs to load bitmap files (*.bmp) from disk and then access the raw pixel data. I'd like an easy way to get that raw data as one plane, 32 bits per pixel. Right now I'm using LoadImage() to get the file and then two calls to GetDIBits(). The first call is to get the BITMAPINFO structure data so I know how big a buffer to allocate for the pixel data, and the second call actually gets the raw data. hbmp = (HBITMAP)::LoadImage(NULL, lpszFile, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE); memset(&bmi, 0, sizeof(BITMAPINFO)); bmi.bmiHeader.biSize = sizeof(bmi.bmiHeader); rc = ::GetDIBits(::GetDC(NULL), hbmp, 0, 0, NULL, &bmi, DIB_RGB_COLORS); m_pclrBits = (COLORREF *)calloc(bmi.bmiHeader.biWidth * bmi.bmiHeader.biHeight, sizeof(COLORREF)); rc = ::GetDIBits(::GetDC(NULL), hbmp, 0, bmi.bmiHeader.biHeight, m_pclrBits, &bmi, DIB_RGB_COLORS); Currently my programme just assumes that the raw pixel data will always be 32bpp with only one plane, but I just don't know if that is the case. ::GetDC(NULL) returns the root (desktop) window, which on my computer is 32bpp, but it might not be on a different machine and for all I know GetDIBits() might "translate" the raw data into however many bits/pixel and planes the root window is using. Would I be better off using ::GetBitmapBits even though the MSDN library says that is an obsolute function? Is there a way to ensure that the raw data is _always_ 32bpp and in a single plane? I'd rather not have to write code to take number of colour planes, bits per pixel and the colour table and translate "by hand" the raw data into 32bpp. Too many variations/combinations, too much wasting time. :-P I'd prefer to write all the code myself, rather than downloading some third-part toolkit which woud probably have more function than I need. Thanks in advance. P.s. Is there no function to write bitmap data to a *.bmp file? I found the basic structure of a *.bmp file in the MSDN library help files, so if I had to I could hack up a *.bmp file writer, but I'd rather not. Is there a SaveImage() companion to LoadImage() that I could just pass an HBITMAP handle to? -- Cory Albrecht http://cory.doesntexist.com/ "Star Trekkin' across the universe! Always going forward 'cause we can't find reverse!" Tag: C2664: cannot convert... What is going on here? Tag: 228777
  - 2
    - unresolved external symbol __endthreadex and unresolved external symbol __beginthreadex I just don't get it. I punch in the code JUST as it is written and it = doesn't work: //*************************** // // Hello.h // //*************************** class CMyApp : public CWinApp { public: virtual BOOL InitInstance(); }; class CMainWindow : public CFrameWnd { public: CMainWindow(); protected: afx_msg void OnPaint(); DECLARE_MESSAGE_MAP() }; //************************** // // hello.cpp // //************************** #include <afxwin.h> #include "hello.h" CMyApp myApp; //////////////////////////// // CMyApp member functions BOOL CMyApp::InitInstance() { m_pMainWnd =3D new CMainWindow; m_pMainWnd->ShowWindow(m_nCmdShow); m_pMainWnd->UpdateWindow(); return TRUE; } //////////////////////////// // CMainWindow message map and member functions BEGIN_MESSAGE_MAP(CMainWindow, CFrameWnd) ON_WM_PAINT() END_MESSAGE_MAP() CMainWindow::CMainWindow() { Create(NULL, "The Hello Application"); } void CMainWindow::OnPaint() { CPaintDC dc(this); CRect rect; GetClientRect(&rect); dc.DrawText("Hello, MFC", -1, &rect, DT_SINGLELINE | DT_CENTER | DT_VCENTER); } --------------------Configuration: hello95 - Win32 = Debug-------------------- Compiling... hello.cpp Linking... nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol = __endthreadex nafxcwd.lib(thrdcore.obj) : error LNK2001: unresolved external symbol = __beginthreadex Debug/hello95.exe : fatal error LNK1120: 2 unresolved externals Error executing link.exe. The project was a Win32 Application. What have I done wrong? There is = no indication that anything else is necessary but to me it looks like = there are some includes not included or some libs not libed that should = be included and\or libed. --=20 George Hester __________________________________ Tag: C2664: cannot convert... What is going on here? Tag: 228775
  - 3
    - VC SDK I'm using VC 6 with latest Service pack (6). > http://msdn.microsoft.com/library/default.asp?url=/library/en-us/sysinfo/base/getting_the_system_version.asp I have been working with the above sample to display which OS the program is running on. Prior to updating the SDK and SP the code above worked flawlessly, Since updating, I get errors like > c:\working\ostest\hello\hello.cpp(59) : error C2039: 'wProductType' : is not a member of '_OSVERSIONINFOEXA' > c:\working\ostest\hello\hello.cpp(63) : error C2039: 'wSuiteMask' : is not a member of '_OSVERSIONINFOEXA' > c:\working\ostest\hello\hello.cpp(63) : error C2065: 'VER_SUITE_PERSONAL' : undeclared identifier According to MSDN these items are declared in Winbase.h. My include file for Winbase.h does not have these declarations. Has there been a change to this include file that your online sample does not address? I have even uninstalled everything and reinstalled, applying the Service Pack and Updating the SDK's. Is there an update that I missed? -- Regards, Steve Topilnycky Top Cat Computing http://www.topcatcomputing.com/ Tag: C2664: cannot convert... What is going on here? Tag: 228769
  - 4
    - Writing a C++ program to send an email Does anyone know of any API or COM object that allows you to send and email from a C++ program Tag: C2664: cannot convert... What is going on here? Tag: 228768
  - 5
    - max speed compilation failed I have a simpe win32 dll. when I make an optimization/max speed compilation, it always says: Compiling... Command line error D2016 : '/ZI' and '/O2' command-line options are incompatible if I use other options in optimization, it can compile. I wonder if I remove /ZI /O2, is it still in max speed ? or how can I get a max speed compilation ? thanks. /* Call Library source file */ #include "extcode.h" #include <ole2.h> #include <stdio.h> #include <conio.h> #include <winbase.h> void GetSeeThrough(unsigned char *aLine,int *seeThrough,int aLMax,int aLMin) { register i,j,k; for( j=0;j<256;j++) { //-----------added--below--------- if(j<=aLMin) { seeThrough[j]=150;//srcImage->Width; } else if(j>=aLMax) { seeThrough[j]=0; } else { k=0; for(i=0;i<150;i++)//srcImage->Width { if(j<=aLine[i])k++; } seeThrough[j]=k; } } } _declspec(dllexport) void Go(long count, long *time); _declspec(dllexport) void Go(long count, long *time) { int seeThrough[256]; unsigned char aLine[150]; int i; int tt1,tt2,tt3; *time=count*4; tt1=GetTickCount(); for(i=0;i<150;i++) { aLine[i]=i; } for(i=0;i<count;i++) { GetSeeThrough(aLine,seeThrough,255,0); } tt2=GetTickCount(); tt3=tt2-tt1; //milliseconds *time=tt3; } Tag: C2664: cannot convert... What is going on here? Tag: 228760
  - 6
    - Sharing data between apps Greetings, I know this has come up before, but I never needed to know the details. Well now I do. How do it use the CreateFile() API to create a memory-only data block that I can use to share data between two or more applications? If someone could point me to a good reference that would be great. Thanks Murrgon Tag: C2664: cannot convert... What is going on here? Tag: 228759
  - 7
    - typedef struct question i asked this before and forgot the answer: i am doing this: typedef struct { }MYSTRUCT and inside the struct i want to declare a pointer to a MYSTRUCT .... but the compiler doesn't like it, what do i need to do before hand again? thanks Tag: C2664: cannot convert... What is going on here? Tag: 228758
  - 8
    - CopyFile() very slow What is the best method (read fastest) of copying a file I'm using CopyFile() but it is extremely slow. Below i a small console app that illustrates this. Just replac the hardcoded file paths with the path to a file ~10MB Compile and run the program and see the reported times Then go to Windows Explorer and copy the same file My results were about 7 secs using CopyFile() an instantaneous through Explorer #include <windows.h #include <stdio.h #include <string.h #include <time.h #include <conio.h int main(int argc, char* argv[] char ampm[] = "AM" time_t ltime struct tm *today time( &ltime ) today = localtime( &ltime ) if( today->tm_hour > 12 strcpy( ampm, "PM" ) today->tm_hour -= 12 if( today->tm_hour == 0 ) /* Adjust if midnight hour. * today->tm_hour = 12 printf( "Begin time:\t\t\t\t%.8s %s\n" asctime( today ) + 11, ampm ) CopyFile("c:\\temp\\big_file.zip", "c:\\temp\\big_file2.zip", 0) time( &ltime ) today = localtime( &ltime ) printf( "End time:\t\t\t\t%.8s %s\n" asctime( today ) + 11, ampm ) int ch printf("\n\tPress any key to exit...\n") ch = getch() return 0 Thanks Drew Tag: C2664: cannot convert... What is going on here? Tag: 228755
  - 9
    - Determining System Boot/Login Time Is there a reasonably simple way to determine the date and time at which the system booted and/or when the current user logged in? Tag: C2664: cannot convert... What is going on here? Tag: 228749
  - 10
    - Extracting data from a VARIANT in C/C++ I am writing an add-in for an application. The add-in is a DLL written in C++. The parent application passes various parameters to a function in the DLL. On of these function parameters is type "_variant_t". I need to extract the string value from this _variant_t. I'm an old C programmer from way back, but I'm not much of a C++ programmer, so I am, as yet, unable to deduce the means fo doing this from the header files. Is there an MFC or Win32 library or class that provides the means of extracting specific data types from a _variant_t? Thanks in advance for any help. Steve Tag: C2664: cannot convert... What is going on here? Tag: 228742
  - 11
    - WS_SYSMENU without CLOSE BOX Hi there, I'm trying to create a new window which only has a Minimize Box and Maximize Box. I need to put WS_SYSMENU to show the Min and Max box, but the Close Box also shows up. Is there any way to create a window with just a min and max box without CLOSE box? Thanks, Robert Tag: C2664: cannot convert... What is going on here? Tag: 228741
  - 12
    - New[] and delete Hi, A Quick Question please .... If I use new[1] can I use delete, instead of delete[] ? I mean when I use, " Type_AddrObj lpAddress = new Type_AddrObj [1] ;" Then which is correct ? a) delete[] lpAddress ; b) delete lpAddress ; Since the size of array is always specified as 1. Thanks. Vipul Pathak ; Tag: C2664: cannot convert... What is going on here? Tag: 228735
  - 13
    - Disabled CTreeControl question Hello! If I select an item in a tree - and disable the whole tree - all the items in that tree is "grayed". How can I avoid that? This is how I would like things to work - only one item should be grayed - and I should not be able to click on this tree. -- - Lars Tag: C2664: cannot convert... What is going on here? Tag: 228733
  - 14
    - Compilation error with std list class Hi All, When I try to include the header for a class that has a member list<int> m_list; I get over 100 errors of the nature: "c:\program files\microsoft visual studio\vc98\include\functional(16) : error C2143: syntax error : missing '{' before '<'" Here is the complete header which I have cut down to the minimum in order to show the error: #include <list> using namespace std; class CMyContainer { public: CMyContainer(); int GetSize(); private: list<int> m_list; }; Any ideas what is wrong? Cheers, Rob Tag: C2664: cannot convert... What is going on here? Tag: 228721
  - 15
    - How to send Email in VC Applications? hi, What is the best way to send Email in VC applications? Thanks, Behzad Tag: C2664: cannot convert... What is going on here? Tag: 228718
  - 16
    - Is it possible? How to in VS 6 implement a library of a class so that the class can be used in an application like, main() { ClassFromLibrary o; o.method(); ... } Thanks! Tag: C2664: cannot convert... What is going on here? Tag: 228717
  - 17
    - Windows NT Screensaver Hi I've been tasked to create a screensaver that blanks the screen, and displays a customn dialog box when the use,r for want of a better word wiggles the mouse or uses the keyboard. However I'm not sure how to display the dialog box, if anyone could help it would be great. For reference I'm using vc++ 5.0 on Windows NT Thank Dave Tag: C2664: cannot convert... What is going on here? Tag: 228716
  - 18
    - Unknown bitmap format Hi, I want to update the toolbar, but it pops up "Unknown bitmap format",and I can't change it at all. How should I do? Thanks in advance. Cui Sheng Tag: C2664: cannot convert... What is going on here? Tag: 228705
  - 19
    - Error With Structures I have the following code in VC6: typedef struct SS1 { int a; int b; int c; } Struct1; void Test() { const NUM_STRUCTS=1; Struct1 *pS; Struct1 *pA; int ndx=0; pA=(Struct1*)malloc(NUM_STRUCTS*sizeof(Struct1)); for(ndx=0;ndx<NUM_STRUCTS;ndx++) { pS=pA+(ndx*sizeof(Struct1)); pS->a=101; pS->b=202; pS->c=303; } // end for for(ndx=0;ndx<NUM_STRUCTS;ndx++) { pS=pA+(ndx*sizeof(Struct1)); cout<<"\n*"<<pS->a; cout<<"\n*"<<pS->b; cout<<"\n*"<<pS->c; } // end for free(pA); } // The code works fine if NUM_STRUCTS is 1, but causes an assert error if NUM_STRUCTS is greater than one. I'm sure it is something simple, but I can't figure it out. Thanks in advance. -- Chip Pearson Tag: C2664: cannot convert... What is going on here? Tag: 228701
  - 20
    - Is the rand() known to be buggy? It repeat same value after 349 iterations! I am issuing the srand(1) statement before every time I use rand() in a for(;;) loop sequence. Consistently, the value 4313, that showed up in iteration 340, repeat itself in the 349th iteration ! If it would be a true random generator, and given that it is defined as returning type int, it would use one of the (primitive) generating polynomials of the 15th rank, such that it would guarantee not to repeat even once before exhausting all values between 1 and 32767, while 0 is not in the game (different seeds should only impact the order in which these 32767 numbers are generated (and possibly starting with different values)). Anybody have a handy true random generator source code? Thanks Tag: C2664: cannot convert... What is going on here? Tag: 228698
  - 21
    - URLOpenBlockingStream can't get new data from url until closing application aloha i am using the function URLOpenBlockingStream(...) to get some data from a url and then parsing the data. the problem is that after retrieving the data for the first time, the next time i am trying to pull the data again the data is the same old data from each url and i cant get a new data from the url until i am opening the browser and refresh it or closing and opening the application my code is CString getCurrentVal(CString tasUrl) { ::CoInitialize(0); CComPtr<IStream> pStream ; HRESULT hr = ::URLOpenBlockingStream ( NULL,_T(tasUrl),&pStream,0,NULL ); if (SUCCEEDED(hr) && pStream) { CString html; while(SUCCEEDED(pStream->Read(buffer, size, &bRead)) && bRead > 0){ html += CString(buffer, bRead); ... } ::CoUninitialize( ); } is anyone have any clew ? Tag: C2664: cannot convert... What is going on here? Tag: 228697
  - 22
    - interrupt handling ... I'm looking for a simple example of how to implement and interrupt handler and a call to a function in my code. I'm using Winme and VStudio 6 ... I guess it problably different for other OS (as usually with Windoze) it's not portable ... Thanks in advance :-) Tag: C2664: cannot convert... What is going on here? Tag: 228696
  - 23
    - Iterating through an enum??? Is there anyway to iterate through an enumeration?? FOr example for an enum defined below typedef enum TST1 = 1 TST2 = 10 END_TST = 100 } TST_TYPE If there anyway to do something lik for ( TST_TYPES i; i != END_ST; i++ TST_TYPE tst = TST_TYPES[i] or something similiar? I basically have an enum that I need to build another list from. Thanks -C Tag: C2664: cannot convert... What is going on here? Tag: 228692
  - 24
    - Dealing with folder name with spaces inside Hi, there When encountering folder name with spaces inside, such as C:\Documents and Settings, my system() program will return error. I am using CString strT.Format(_T("%s %s %s"), pszCmd, pszInput, pszOutput), then using system(strT) do the job. I thought it could be solved by adding "" arround those directories. Then I used strT.Format(_T("\"%s\" \"%s\" \"%s\""), pszCmd, pszInput, pszOutput) But it still failed. When I using those strings in Command Prompt, such as "pszCmd" "pszInput" "pszOutput", they works well. So what is the problem, and how to solve it Thanks lot Gary Tag: C2664: cannot convert... What is going on here? Tag: 228687
  - 25
    - Debug DLL files will only work on one computer Hi, Can anyone tell me why my Debug DLL files will only work on one computer? It seems like i can get it to work on another computer immediately after a recompile, but if i commit it to my CVS server for a while, and someone else downloads the DLL file on another computer, they are unable to use the DLL files. Is there some setting i am missing? Thanks! Tag: C2664: cannot convert... What is going on here? Tag: 228680

Can somebody please explain this one to me???

<snip>
G:\Othersyde\source\othersyde\COSBSPWorld.cpp(49) : error C2664: 'LoadInfo'
: cannot convert parameter 1 from 'struct OSFileIO::WORLDFILEINFO
Othersyde::CBSPWorld::*' to 'struct OSFileIO::WORLDFILEINFO *'
<snip>

OSFileIO and Othersyde are namespaces, CBSPWorld is a class.

This is how I declare the variable in CBSPWorld:
OSFileIO::WORLDFILEINFO m_world;

I don't get it...

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Never mind... by Morten

Morten
Fri Apr 23 11:52:22 CDT 2004

Forget it. I had left my brain somewhere. I was trying to access a
non-static variable in a static function... :-)

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