Eric Fritzinger
I am trying to disable the highlighting of a button when the mouse hovers over it while still maintaining the same functionality of the mouse move event. My initial attempts have worked, but not as well as just shutting off hot-tracking.
Is there a style or property I can set to disable it
Thanks!
~Eric
How to disable hot tracking on a CButton control?
Visual C++ General
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- invalid or corrupt file: duplicate COMDAT error encountered while migrating to Visual Studio 2005 I have a solution comprising of some 20+ projects, which I am trying to migrate to VS2005 (I was using VS2002). One of the projects is throwing up this linking error: fatal error LNK1179: invalid or corrupt file: duplicate COMDAT <mangled form of the function CXYCollection::get_Count> (Basically the mangled name of the function just after QueryInterface) The project makes a heavy use of class templates and I think it is the reason behind the error. I am providing excerpts from the relevent source and header files, so that the design of the code, inheritance hierarchy, etc could be understood. Contents of XYCollection.h class CXYCollectionEventsBase { public: CXYCollectionEventsBase(IXYCollection *coll, IXYCollectionListener *clis) : m_Collection(coll), m_Listener(clis) {} // IXYCollection HRESULT AddListener(/* [in] */ IXYCollectionListener *lis); HRESULT RemoveListener(/* [in] */ IXYCollectionListener *lis); protected: void FireElementAdded(IUnknown *elem); // other protected functions ListenerCollection<IXYCollectionListener> m_Listeners; IXYCollection *m_Collection; IXYCollectionListener *m_Listener; }; (IXYCollection, IXYCollectionListener are COM interfaces which implement IDispatch) // Itf is derived from IXYCollection template<class Itf, const IID *iid, class ElemItf, class KeyItf, class K, HRESULT ( __stdcall KeyItf::*const KeyFn)(K*), const bool clearAllowed = true, class Base = IDispatchImpl<Itf, iid> > class CXYCollection : public Base, public CXYCollectionEventsBase { public: typedef CXYCollection<Itf, iid, ElemItf, KeyItf, K, KeyFn, clearAllowed, Base> _MyT; CXYCollection(IUnknown *parent, IXYCollectionListener *lis = 0) : CXYCollectionEventsBase(this, lis), m_Parent(parent) {} ~CXYCollection() { std::for_each(m_Elements.begin(), m_Elements.end(), mem_stdcall_fun(&ElemItf::Release)); } // The contained elements typedef std::vector<ElemItf*> Elements; typedef typename Elements::iterator ElemIter; // IUnknown STDMETHOD_(DWORD, AddRef)() { return m_Parent->AddRef(); } STDMETHOD_(DWORD, Release)() { return m_Parent->Release(); } STDMETHOD(QueryInterface)(REFIID riid, void **ppUnk) { // code has been removed ... } // Itf STDMETHOD(get_Count)(/* [out, retval] */long *numElems); STDMETHOD(GetItem)(/* [in] */ long index, /* [out, retval] */ IUnknown **item); STDMETHOD(Item)(/* [in] */ long index, /* [out, retval] */ ElemItf **elem); STDMETHOD(Find)(/* [in] */ K key, /* [out, retval] */ ElemItf **elem); STDMETHOD(Add)(/* [in] */ ElemItf *elem); STDMETHOD(Remove)(/* [in] */ ElemItf *elem); // ... and several other function definitions inherited from itf protected: virtual bool AddElem(ElemItf *elem); bool RemoveElem(ElemItf *elem); static bool KeyCompare(long l, long r) { return l == r; } static bool KeyCompare(BSTR l, BSTR r) { return l && r && !wcscmp(l,r); } static void KeyDestroy(long) {} static void KeyDestroy(BSTR b) { SysFreeString(b); } Elements m_Elements; IUnknown *m_Parent; // ... and some other variables ... }; Contents of XYCollection.cpp Code for the functions of the class CXYCollectionEventsBase Places where the template XYCollection is used: Contents of XYTSPids.h #include "XYCollection.h" typedef CXYCollection<IXYMNs, &IID_IXYMNs, IXYMN,ITSCVPidComponent,long, &::ITSCVPidComponent::get_Pid, false> CXYMNsColl; class CXYTSPids : public CXYMNsColl { public: CXYTSPids(IUnknown *parent, IXYCollectionListener *lis = 0); // IXYMNs STDMETHOD(Find)(/*[in]*/ long pid, /*[out,retval]*/ IXYMN **res); protected: struct COrdPid; bool AddElem(IXYMN *pid); }; Contents of XYTSPids.cpp file Implementation of CXYTSPids Contents of XYSections.h file #include "XYCollection.h" class CXYSectionsBase : public IDispatchImpl<IXYSections, &IID_IXYSections> { // IXYSections STDMETHOD(FindHash)(/* [in] */ long hash, /* [out, retval] */ IXYSection **sec); STDMETHOD(FindAccessKey)(/* [in] */ long upper32, /* [in] */ VARIANT low64, /* [out, retval] */ IXYSection **sec); }; typedef CXYCollection<IXYSections, &IID_IXYSections, IXYSection,IXYSection, long, &IXYSection::get_Section, false, CXYSectionsBase> CXYSections; Contents of XYSections.cpp file // Implementations of the functions of CXYSectionsBase ... I would be higly obliged if the pros out here can provide me some solution to this problem, which has crept in after I compiled the solution in VC2005. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- createprocess Code Snippet STARTUPINFO si ={0}; PROCESS_INFORMATION pi = {0}; si.cb = sizeof(si); CreateProcess("C:\\WINDOWS\\notepad.exe", NULL,NULL,NULL,FALSE,NORMAL_PRIORITY_CLASS ,NULL,NULL,&si,&pi); printf("Failed because: %d\n", GetLastError()); CloseHandle(pi.hProcess); CloseHandle(pi.hThread); Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- mystery.c how does this work hey how can explain me how is this freaky program working this is alien stuff Code Snippet #include <stdio.h> main(t,_,a) char *a; { return !0<t t<3 main(-79,-13,a+main(-87,1-_, main(-86, 0, a+1 )+a)):1,t<_ main(t+1, _, a ):3,main ( -94, -27+t, a )&&t == 2 _<13 main ( 2, _+1, "%s %d %d\n" ):9:16:t<0 t<-72 main(_, t, "@n'+,#'/*{}w+/w#cdnr/+,{}r/*de}+,/*{*+,/w{%+,/w#q#n+,/#{l,+,/n{n+\ ,/+#n+,/#;#q#n+,/+k#;*+,/'r :'d*'3,}{w+K w'K:'+}e#';dq#'l q#'+d'K#!/\ +k#;q#'r}eKK#}w'r}eKK{nl]'/#;#q#n'){)#}w'){){nl]'/+#n';d}rw' i;# ){n\ l]!/n{n#'; r{#w'r nc{nl]'/#{l,+'K {rw' iK{;[{nl]'/w#q#\ n'wk nw' iwk{KK{nl]!/w{%'l##w#' i; :{nl]'/*{q#'ld;r'}{nlwb!/*de}'c \ ;;{nl'-{}rw]'/+,}##'*}#nc,',#nw]'/+kd'+e}+;\ #'rdq#w! nr'/ ') }+}{rl#'{n' ')# }'+}##(!!/" ) :t<-50 _==*a putchar(a[31]):main(-65,_,a+1):main((*a == '/' )+t,_,a\ +1 ):0<t main ( 2, 2 , "%s" ):*a== '/' ||main(0,main(-61,*a, "!ek;dc \ i@bK'(q)-[w]*%n+r3#l,{}:\nuwloca-O;m .vpbks,fxntdCeghiry" ),a+1);} Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Linker Error Hi, I have taken the Microsofts SDKs ColorTranslationSample from Vista PC from the Path c:\Program Files\Microsoft SDKs\Windows\v6.0\ samples\Multimedia\gdi\WCS\ into seperate folder. I followed the building procedure for this sample as given in the following link http://msdn2.microsoft.com/en-us/library/ms716692.aspx where it is given as building the sample from command prompt using vcbuild command. My first question is why this sample is specifically to be built from command prompt why not we build the solution directly by opening the project in VS2005 Then i tried doing that. I opened the project in VS2005 and started building. It gave me some 25 errors. I could find that icm.h file was missing. I placed that file in the working directory. Then compiled. Still errors were there, Then i saw icm.h was included as ``#include <icm.h>`` i changed it to ``#include "icm.h". Then all the 25 errors have been solved. But at the time of linking , it gave me linking error as below errr LNK2019: unresolved external symbol _WcsOpenColorProfileW@28 referenced in function ``private: long ___thiscall CTransformCreationDemo: emonstrateSystemGmmp(void)``( DemonstrateSystemGmmp@CTransformCreationDemo@@AAEJXZ errr LNK2019: unresolved external symbol _WcsGetDefaultRenderingIntent28 referenced in function ``private: long ___thiscall CTransformCreationDemo: emonstrateSystemDefaultIntent(void)``( DemonstrateSystemDefaultIntent@CTransformCreationDemo@@AAEJXZ errr LNK2019: unresolved external symbol _WcsDefaultColorProfileW@28 referenced in function ``private: long ___thiscall CTransformCreationDemo: emonstrateSystemDefaultIntent(void)``( DemonstrateSystemDefaultIntent@CTransformCreationDemo@@AAEJXZ errr LNK2019: unresolved external symbol _WcsDefaultColorProfileSize@24 referenced in function ``private: long ___thiscall CTransformCreationDemo: emonstrateSystemDefaultIntent(void)``( DemonstrateSystemDefaultIntent@CTransformCreationDemo@@AAEJXZ errr LNK2019: unresolved external symbol _WcsTranslateColors@40 referenced in function ``private: long ___thiscall CTransformCreationDemo: emonstrateFloatColorTranslation(void)``( DemonstrateFloatColorTranslation@CTransformCreationDemo@@AAEJXZ fatal error LNK1120: 5 unresolved externals. Can any one please help me out in solving this problem Thanks in advance. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Converting System::String to LPCWSTR I've been looking for a long time as to how to solve this, and eventually just thought I'd ask. I've been told of A2W, which apparently cannot convert from System::String (so says the compiler error), I've tried converting to a wchar_t first, but the method won't accept it, and I'm running out of luck. Here's what my code looks like now. pin_ptr<const wchar_t> wch = PtrToStringChars(fileName); IAVIFile *aviMedia = NULL; IAVIStream *aviStream = NULL; AVISTREAMINFO *aviSInfo = NULL; AVIFILEINFO aviFInfo; LONG bufferSize = NULL; DWORD length = NULL; wchar_t wcFileLoc; Single vidLength; AVIFileInit(); wcFileLoc = (wchar_t)wch; Error---> AVIFileOpen(&aviMedia, &wcFileLoc, OF_READ, NULL); AVIFileInfo(aviMedia, &aviFInfo, sizeof(AVIFILEINFO)); length = aviFInfo.dwLength; vidLength = (Single)length; In simple terms, I'm trying to put fileName into the second argument of AVIFileOpen, which says it takes an LPCWSTR. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Loop misalignment Well I'm doing DLLs that run in a host app that handles multi-cores for multiple instances of my DLLs, so more cores WOULD help, though I will also investigate multithreading for my own portions of the code, some of which could benefit greatly from parallel processing. The reason I'm at all paying attention to loop alignment is because changing one line can affect time-critical function performance by 50% or more. It's less than a millisecond per loop, so for general purpose it may be insignificant, but digital audio processing is a bunch of loops hundreds of times each a second, so a fraction of a millisecond adds up. The main frustration is that when I implement a new algorithm or make an existing one LOOK more efficient, it may be: A: More efficient B: Less efficient C: More efficient because of some random architecture voodoo I don't fully comprehend D: Less efficient because of some random architecture voodoo I don't fully comprehend E: None, all, or some fraction of the above Meaning that with a new algorithm, it takes longer to determine if it's worth using, and I'm more likely to give up on it as inefficient even though it IS better than the previous one, just because it isn't cut into little bite-size pieces. Or I may keep an algorithm even though it is actually slower than the old one just because it was accidentally optimized. Something that's mathematically 10x more accurate may seem 5x slower while it's really only 1.5x slower, a worthwhile tradeoff (usually...) And since time-critical code is pretty much trial-and-error as it is, I was hoping there was a way to keep from blindly guessing how much padding will make loops run quicker. Law #1 of optimization (comes before the other 2): Don't optimize unless the code is not worth executing without it. If signal processing fails to complete in time, it is nothing, and the end-user has a CPU-meter to glare at. So if there is one line of code that makes it 50% faster (every programmer's dream...) I want to know why, how, if there's an easier way to do it etc. Some functions just do run faster with a bit of padding, and want to know why and how. It actually seems to run better with char[numPadBytes] than with nop, so it's possibly something else entirely, like pushing different variables into registers, but I use so many loops, and padding right before them seems to be the big difference, while things like unrolling don't seem to help. The host application (Cakewalk Sonar) does the same thing - pads with nop before important loops. Apparently the Intel C++ compiler does loop alignment, but isn't exactly in budget right now. I can get better performance with a single line, but have to change that line (by guesswork) every time I edit any function it's in. Project-wide changes just end up being exponentially more of a nightmare, harder to determine what's really better or worse. Otherwise I'll just embark on the lifelong journey of making my IDEAS more efficient... Dave Heinemann Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Visual Studio 2005 - C++ - Using structures and vectors together. The variables declared in main will only be visible in main, that is what he meant. Just because you call a function from another doesn't mean the variables in the calling function are automatically put in scope of the function being called. What you need to do is either declare the variables in the function in which they are used, or, if you want them to be used in several function calls, pass them as parameters. But passing variables. int myfunc(int variable1, int* variable2); The above passes two variables, one by value so it can only be read, and one as a pointer (by reference) so you can modify it. This is what is meant in this case. You can have more or less parameters and you can use any type you want, so your vendor could be passed as. iny myfunc(vector<vendorStruct> vendor); or int myfunc(vector<vendorStruct>* vendor); if you want to modify the vector itself. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- cannot find dll It says "Unable to load botdll2.dll" so it has to be my DLL unless its missing something its dependent on. Do I need to manually check the 100's of matches that the dependency walker came up with I am not really familiar with the path environment variable. How do I place my DLL where windows can find it Thanks =D Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- regcure I was looking at my scheduled task for my laptop and I came across regcure as one of them. I have no idea what this is or what its suppose to do. Anyone have the answer Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- PLease HeLp Hi All, i have got the following error , eerror LNK2001: unresolved external symbol _getaddrinfo@16 Debug/pro.exe : fatal error LNK1120: 1 unresolved externals please note that i have also linked my project with "wsock32.lib" "....i am using MSVC 6.0 with SDK for Windows Server 2003 with SP2... Thanks Anand Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Parsing/errorcheck. If you create a C++ .NET project you will get all the functionality of .NET that you are used to in C# (although there are a couple of differences and some syntax differences in the way you call things and create things). If you don't compile it as a .NET project you won't be able to access .NET classes or namespaces and so won't be able to do the above that way. If you want to use a non-.NET project, you can use the ato functions (replacing the with the appropriate letter, eg. atoi). Unfortunately these functions do not throw exceptions, but return the rather ambiguous 0 if they fail, or various defines if they are out of range. If you know the value will not hit 0 you could do the following: Code Snippet char szInput[] = "1234"; int a = atoi(szInput); if(a == 0) printf("Could not convert string, not a valid number."); if(a == INT_MAX || a == INT_MIN) printf("Number out of integer range"); It all depends on how you want to do things, another example would be using atof for getting floats from strings, it's used in pretty much the same way. Sorry for the printfs, I'm working on C at the moment. Also, C# is based on C++, and both have had access to .NET for the same period of time. Asking if C++ is using C# code just sounds wrong. While it sounds pretty certain that you are using a native C++ project, if you're not have you made sure you're using the System namespace Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Identifcation and access of variables from strings You have the strings. You have the model variables. What's the difficulty here Just pass the strings to methods in the model class that expect them, and you should be on your way/ Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- ifstream issues - reading in a data file I am once more working to convert some older code from VC++ 6.0. I have run into a bug problem with ifstream. Below is a small sample project that I am trying to get to work as a "proof of concept" of sorts. It replicates my problem on a smaller scale. Here we go. Code Snippet #include "stdafx.h" #include <iostream> using namespace std; #include <fstream> char *filename = "PL_TABLE.DAT" ; int _tmain( int argc, _TCHAR* argv[]) { char comments[150]; ifstream datafile; datafile.open(filename); if (!datafile.good()) cout << "File Bad!" ; // Read header //Class.ReadHeader(datafile); int num_entries; datafile.getline(comments,150, ':' ) >> num_entries; datafile.get(); datafile.getline(comments,150); // read second comment line for ( int i=0; i<num_entries; i++) { int index; datafile.getline(comments,30); datafile >> index; if (index < 0 || index >=250) cout << "Error!" ; else cout << "No Error!" ; } } And here is the format of the "PL_TABLE.DAT". (The spacing is a bit off from what it looks like after I pasted it in here.) There are more listings than just these two but they represent the setup. number of players in file : 232 Name # T C D V R I T TC LC Z M B BC S A Tu Se D J WR L W H AH-1W 2 1 5 739 5 6 4 3 15 2 2 0 14 0 15 6 8 24 3 1 10000 13.87 3.28 4.44 AV-8B 3 2 6 662 5 2 80 2 14 1 1 0 16 6 14 7 0 23 3 0 10000 15.58 9.25 3.55 Now, the specific problem lies in that the line, " datafile >> index;", is not reading in an index regardless of what I try to tweak. It should be reading, 2 on the first loop, 3 on the next, and so on and so forth. Now that this has been brought to VS 2005, it won't run properly. What am I missing Any advice or comments are welcome, thank you. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Visble Clip bounds in a Graphics object I have created a Graphics object using Graphics(HDC *hdc) constructor. In this case how does the graphics object knows about the Visible region of the window. It does knows that other wise how does it can implement GetVisibleClipBounds function. In my case if after the creation of the Graphics object the window is resized i.e. the visible region is changed, anything drawn on the new found area is not actually drawn. As far as i can see the visible region is not getting updated in the Graphics object, can anyone help me with this. Will appreciate it Samit Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- _stat() and long names As documented (OK, you have to look for it), the \\ \realpathhere convention only lets you extend the total path length; the individual components (i.e. any given directory name or the file name) are still limited to 255 characters each. Open the documentation page for FindFirstFile, follow the "Naming a File" link under the 'lpFileName' parameter, and start reading under "Maximum Path Length". Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Access violation after porting project to VC2005 I have an application that used to work fine compiled with VC2003. Recently I re-compiled it with VC2005 and it started getting access violations. Application has 2 dlls that and one of them creates instance of std::map which it than passes to the other dll. I can see contents of the map in the debugger after and it looks fine. However when that second library calls map::begin() result returned from that function looks completely bogus and not at all points to the first element (or any other element) in the map. Can this be caused by different versions of STL used to compile each library The map in question is only accessed by a single thread so it's unlikely to be some race condition. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- ATL IDispEventSimpleImpl reverse order bug still present in VC++ 2005 ???? I'm cross-posting my question to this forum (original here : http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=1173728&SiteID=1 ) as it seems that ATL is also mentionned here. Sorry, if it's a bad practice ! I'm currently implementing an event sink with IDispEventSimpleImpl. I have the same problems than the ones described in KB288724 ( http://support.microsoft.com/kb/288724/en-us ), I'm receiving arguments in reverse order. What is confusing me is that this rather "old" knowledge base article applied only to Visual C++ 6.0. By looking into atlcom.h from VC++ 2005, it seems that IDispEventSimpleImpl::InvokeFromFuncInfo is the one described in the workaround section of KB288724, but I'm not sure with IDispEventImpl::GetFuncInfoFromID as its design has changed. Is it possible that this issue has not been solved with Visual C++ 2005 (2002 2003 ) Is it possible that the problem comes from the server (which has not been built with VC++ 2005 ATL) Has anyone observed such behavior Thanks in advance. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Link error : debugging information corrupt Hi I have a VC6 application which uses gdiplus When i build the pjt the following link error occurs gdiplus.lib(imagingguds.obj) : fatal error LNK1103: debugging information corrupt I have the latest platform sdk installed and i was able to use the gdiplus in my other vc6 projects Plz help Regards Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- error LNK2019: What .lib do i need to link? (C) sorry for the late reply, i could have sworn that i had alerts set up for this topic. Code Snippet 1>------ Build started: Project: RexTest, Configuration: Debug Win32 ------ 1>Linking... 1>REXTest.obj : error LNK2019: unresolved external symbol _REXDelete referenced in function _main 1>REXTest.obj : error LNK2019: unresolved external symbol _REXGetCreatorInfo referenced in function _main 1>REXTest.obj : error LNK2019: unresolved external symbol _REXGetInfo referenced in function _main 1>REXTest.obj : error LNK2019: unresolved external symbol _REXSetOutputSampleRate referenced in function _main 1>REXTest.obj : error LNK2019: unresolved external symbol _REXCreate referenced in function _main 1>REXTest.obj : error LNK2019: unresolved external symbol _REXUnloadDLL referenced in function _main 1>REXTest.obj : error LNK2019: unresolved external symbol _REXLoadDLL referenced in function _main 1>REXTest.obj : error LNK2019: unresolved external symbol _REXRenderSlice referenced in function _ExtractAllSlices 1>REXTest.obj : error LNK2019: unresolved external symbol _REXGetSliceInfo referenced in function _ExtractAllSlices 1>C:\Documents and Settings\esiadmin\My Documents\Programming\Test App\RexTest\Debug\RexTest.exe : fatal error LNK1120: 9 unresolved externals Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- mfcs80u.lib(dllmodul.obj) : error LNK2005: _DllMain@12 It depends on what you are trying to do, but general initialisation should be under WinApp::InitInstance. Please look at this technical note for more information. http://msdn2.microsoft.com/en-gb/library/zfz4xb9a(VS.80).aspx Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- VS2005 / corrupt solution file / References to non existing projects Hi, I have a problem with a number of VS2005 solution files (converted from VS2003). The solution builds but VS keeps updating the solution file which requires a check-out etc. The problem is caused as far as I can see by references to non existing projects! The solution files have references (GUIDs) to project files in the GlobalSection(ProjectConfigurationPlatforms). However some of the references are not listed at the top of the solution file and I cannot find (text search) any project file with such a GUID. If I remove the references then VS adds new references (again to non existing projects). The solution we have contains both vcproj files but also icproj (Intell compiler) with nested vcproj files. Does anybody have an idea what might cause this problem OR Does anybody have suggestions for debugging this problem Thanks in advance TomFr Example: GlobalSection(ProjectConfigurationPlatforms) = postSolution {35A5CE92-181C-4238-965E-870A39BA8D8D}.Debug.ActiveCfg = Debug|Win32 {35A5CE92-181C-4238-965E-870A39BA8D8D}.Debug.Build.0 = Debug|Win32 ... ... {84F9DB36-A887-44F6-B3AA-520FE484DC3A}.Release.ActiveCfg = Release|Win32 <== Non existing Reference. {84F9DB36-A887-44F6-B3AA-520FE484DC3A}.Release.Build.0 = Release|Win32 EndGlobalSection Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Interesting fast interop problem Hi all, Summary: Can I pass out a linked list value type/pointer (my own class) from C++ to C# If not, what are the overheads/caveats involved in passing things around as void*s in C# I'm trying to use C# as a basis for an audio application. I'm finding the speed is fine as long as I avoid a lot of object allocation/deallocation. By using a bit of C++ here and there I'm able to create and destroy critical objects in system memory rather than on the managed heap. Recently in an attempt to further improve the speed of the application I ditched my ArrayList based buffers for a simple sorted linked list. I believed that the greater efficiency of the buffers would outweigh the hit incurred from creating and destroying list nodes. I was wrong. So now down to the question. I'm looking for a way to implement the linked-list structure in C++ for use in C#. The main problem is that my major efficiency breakthrough hinges on passing the linked list nodes out directly to accessing classes so they can enumerate through all or part of the list. As you can see it's a catch 22. I either use managed C++ to implement the class, giving me no actual gain, or I use unmanaged C++ and I have to pass things out through a managed wrapper. I'm not sure if I can do this, or whether it will be any faster in the end. C++ won't even let me create the circular reference that is fundamental to implementing a linked list! Things are becoming too complicated and so far I haven't even matched the performance of the ArrayList, which has to copy itself as it grows or shift data when elements are removed. Any general suggestions on how to accomplish this task in other ways would be appreciated. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- BackupRead "Access denied" Problem (and backing up files in general) I'm sorry I didn't include those information in my earlier post. I'm running it on XP Professional. I'm running it under my account, which displays as "Computer administrator" in the User Accounts window. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- sort of CListCtrl Hi. For example, for(i=0; i<n; i++) { ... XXX.InsertItem(0, A); // CListCtrl XXXClass::XXX XXX.SetItemText(0, 1, B); XXX.SetItemText(0, 2, C); XXX.SetItemText(0, 3, D); ... } I could get the result of list, but it's reversed, i.e. last-in first-out. I want like this: A B C D i=0 i=1 i=2 ... What's wrong Sorry for this simple matter... Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Wrapper Lets a vendor gives you a Class1.dll, Class1.h, Class1.lib #ifdef CLASS1_EXPORTS #define CLASS1_API __declspec ( dllexport ) #else #define CLASS1_API __declspec(dllimport) #endif // This class is exported from the Class1.dll class CLASS1_API CClass1 { public : CClass1( void ); void M1(); }; // This is the constructor of a class that has been exported. // see Class1.h for the class definition CClass1::CClass1() { return ; } void CClass1::M1() { printf(__FUNCTION__ "\n" ); } You need to create a C++ Class Library project - ClassLib1. This class lib containes Class1: #pragma once #include "..\class1\class1.h" using namespace System; namespace ClassLib1 { public ref class Class1 { private : CClass1& m_cl1; public : Class1() : m_cl1(* new CClass1) { } ~Class1() { delete &m_cl1; } void M1() { m_cl1.M1(); } }; } add a refference to you Class1.lib using ClassLib1 properties -> Configuration properties->Linker->Input Additional Dependences: $(NoInherit) ; "[LibPath]Class1.lib" Or using #pragma comment(lib, "[LibPath]Class1.lib") Compile! Should be compiled! Then create C# project. Add a reference to you ClassLib1. static void Main( string [] args) { ClassLib1. Class1 cl = new ClassLib1. Class1 (); cl.M1(); } Make sure that Class1.dll, ClassLib1.dll lies beside your C# .exe program! By default ClassLib1.dll copied to output folder but not its dependences! It meand that you need manually copy Class1.dll. If everything is right then you will obtain this output: CClass1::M1 Press any key to continue . . . Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- please help me---I cannot import VBE6EXT.olb I developed the addin in MS word 2003 using VC++ 2005+ATL. I cannot solve the problem for three days: when I compile: It says: error C4772: #import referenced a type from a missing type library; '__missing_type__' used as a placeholder. The error is in here: #import "C:\Program Files\Common Files\Microsoft Shared\VBA\VBA6\VBE6EXT.olb" rename_namespace("VBE6") BUT the file( VBE6EXT.olb ) exactly is in the file. I have no any clue how to solve it. I searched a lot through google. But there is not any help. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Combobox 1) If u would like to add data to combo at the design time itself,go to it's properties,select 'Data' Column Yes' this is what I want, but this Data column is in "disable" status (gray color), so I can write there strings.. the dialog Messages empty, I can' t see the regular look..maybe It's connected to this problem to. It seems that it's problem with IDE or control or control properties.Check control properties once.If the problem is not because of properites,delete that combo, add a new one.If the problem still persists, close the ide,restart.Adding new combo should solve the problem.If not,it indicates that there is some problem with the IDE. CString strDate; taskDate; rs.GetFieldValue("task_date",taskDate); strDate = taskDate.Format(_T("%d/ %m/ %Y")); my problem is, How to define taskDate Please see : http://msdn2.microsoft.com/en-us/library/5f8k59f9(VS.80).aspx Thanx, Ch.T.Gopi Kumar. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Allocation problem Just to make sure I was clear before: CheckBytes function doesn't catch the error in this case, it crashes. Anyway, thanks for the replies, I guess it's back to 16000 lines of code for me... Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Error PROJ003 -- Error Spawning cmd.exe I did not see that answer but I don't have time looking at all of them. I did however see answers where the solution I suggested worked, and that fixes the problem to be the way it should be. Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Why no compilation error - Assigning int to std::string? Hello, I am sure I am missing something or may be I don't understand it properly but can somebody explain me why first line results into compilation error but second does not: Code Snippet std::string tmp_Error = 5 ; // Results in C2440 error std::string tmp_noError ; tmp_noError = 5 ; // No compilation error Thanks and Regards Yogi Watcher Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Asunchronous UI updating - other way? In my application, I receive some values from two threads; I have main class of main form, that is one thread TH1 that receives some events like button click and second thread TH2 that works in loop generates some values. When some value or action is received from TH1 or TH2, they both need to be displayed in a control in main form. If I try to change control from TH2, get an exception about cross-threading operation. I have solved that in the way that TH2 doesnt change controls but only properties in main form and in main form I have timer that every 1ms updates labels from properties. Works, no cross-therading troubles. Although I don't like this timer that works all the time, I wanted to make maybe some asynchronous event running - that TH2 would just fire some event in main therad and it would update interface. But I dont know how to do this. How When I tried to make some BackgroundWorker that would br run every time a property changes, it didn't change interface, just has thrown A first chance exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll How to force main window to update its controls in its own thread (I think that I just don't know how to implement those events) Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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- Deleting a CLI array I am used to the C++ requirement of using delete [ ] array_pointer; to free memory. If I have a CLI array like pString_progString = gcnew array <System: tring ^>(7); How do I delete it I have read that I should not use the "delete [ ]" form, but I do not know what to use. The help system for "array" makes no mention of this. I am new to the CLI constructs and thus may be missing something basic. Thanks. Thomas Tag: Visual C++ General How to disable hot tracking on a CButton control? Visual C++
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Re: Visual C++ General How to disable hot tracking on a CButton control?
Sdi
Where's the hot-tracking behavior coming from Is this a button on a toolbar control (whose hot-tracking image list you control) or a CBitmapButton (whose images you also control) or something else
Re: Visual C++ General How to disable hot tracking on a CButton control?
Eric Fritzinger
Ah, my apologies on the confusion. It is a regular CButton that I've subclassed.
Re: Visual C++ General How to disable hot tracking on a CButton control?
Sdi
As far as I know, 'plain' CButton's don't have hot tracking. So I'll ask again: where is the hot-tracking behavior coming from What does the debugger say about WM_MOUSEMOVE and related mouse messages
As far as I know, 'plain' CButton's don't have hot tracking. So I'll ask again: where is the hot-tracking behavior coming from What does the debugger say about WM_MOUSEMOVE and related mouse messages
Re: Visual C++ General How to disable hot tracking on a CButton control?
Eric Fritzinger
What do you mean by that
I'm a newbie MFC programmer with only a month's worth of experience. All I know is that I have a form I made using the resource editor that has several buttons on it that I dragged from the toolbox. They highlight when I mouse over them. I'm just trying to stop the highlighting.
Thanks for your help.
~Eric
Sdi wrote:
What does the debugger say about WM_MOUSEMOVE and related mouse messages
What do you mean by that
I'm a newbie MFC programmer with only a month's worth of experience. All I know is that I have a form I made using the resource editor that has several buttons on it that I dragged from the toolbox. They highlight when I mouse over them. I'm just trying to stop the highlighting.
Thanks for your help.
~Eric
Re: Visual C++ General How to disable hot tracking on a CButton control?
Sdi
You're dealing with "themed" controls: http://msdn2.microsoft.com/en-us/library/ms997646.aspx
You're dealing with "themed" controls: http://msdn2.microsoft.com/en-us/library/ms997646.aspx
In particular: http://msdn2.microsoft.com/en-us/library/ms997646.aspx#xptheming_topic9