How to determine the owner of serial port?

TheMSsForum.com: The Microsoft Software Forum

The MSS Forum ‹ VC
- Archive
  - Biz
  - MCSE
  - CRM
  - Drivers
  - Framework
  - ADO
  - ASP
  - Compact
  - Forms
  - Dotnet
  - C#
  - VB
  - FontpageGen
  - Excel
  - WorkSheet
  - Exchange
  - Setup
  - Fox
  - Fontpage
  - ASP
  - IIS
  - Entourage
  - Money
  - Messanger
  - PocketPC
  - Powerpoint
  - Project
  - Publisher
  - Excel
  - VB
  - Security
  - Portal
  - Services
  - SQLServerDev
  - SVCS
  - SQLServer
  - VB
  - VC
  - MFC
  - ExcelGen

- Previous
  - 1
    - Hooking the keyboard from IE Hi all, I have developed a BHO that installs low level keybaord hooks and CBT hooks globally whenever IE is opened.The keys that are pressed when IE is active are to be captured.I am trying to check whether the IE is active first, If it is i set a boolean flag.In the key hook proc ,if the flag is set, the keys are sent for further processing.The keyboard hooks is working fine(when checked separately), but the CBT hooks is not working properly. The IE page is taking a long time to load and after it loads, its not informing me abt whether the IE is active. The only code returns is the Window creations.Nothing else is happening. My hook proc is as follows: LRESULT CALLBACK CBTProc(int code, WPARAM wParam, LPARAM lParam) { if(code==HCBT_ACTIVATE) { GetClassName((HANDLE)wParam, text, TXTLENGTH); if (text[0]=='I' && text[1]=='E') IE_is_active=TRUE;// based on this my keyboard hooks is checked. else IE_is_active=FALSE; } return CallNextHookEx(hhookMsg, code, wParam, lParam); } Is this correct? wat am i missing in this?. thanks and regards, Hema Tag: How to determine the owner of serial port? Tag: 262628
  - 2
    - 3 doubts Hi, 1. How do I share memory(using #pramga data_seg) between VB & VC++ applications and both are in different processes. Is it possible? 2. How do I stop console window? (for ex: I have created console app. with MFC support. The o/p of this application is Dialog box only. But, console window also there. I want to stop console window only. How?). 3.How can I convert win32 console app. to win32 sdk app.? Thanks & Regards, -- Reesh Tag: How to determine the owner of serial port? Tag: 262625
  - 3
    - hi group i got CFileDialog multiselect problem please help hi guy's here is one problem i am facing. actually i am a new bee in mfc so please help. it is a problem related with multiple file selection. i am able to get only upto 10 filenames by following method. my problem is the folllowing code is working for only 10-12 files. void CMainFrame::OnProjectAddfile() { CFileDialog openDialog( TRUE, _T(""),_T(""), OFN_READONLY| OFN_HIDEREADONLY| OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT, _T("C Files (*.c)|*.c|(*.s)|*.s|(*.h)|*.h||")); if(openDialog.DoModal()==IDOK) { POSITION ps; CString MultiFileName[MAX_PATH]; int FileNumber=0; ps=openDialog.GetStartPosition(); while(ps) { MultiFileName[FileNumber]=openDialog.GetNextPathName(ps); FileNumber++; } } } so i tried this void CMainFrame::OnProjectAddfile() { CFileDialog openDialog( TRUE, _T(""),_T(""), OFN_READONLY| OFN_HIDEREADONLY| OFN_PATHMUSTEXIST| OFN_ALLOWMULTISELECT, _T("C Files (*.c)|*.c|(*.s)|*.s|(*.h)|*.h||")); LPSTR ptr = new char[50 * MAX_PATH]; memset(ptr,0,50*MAX_PATH); openDialog.m_ofn.lpstrFile = ptr; if(openDialog.DoModal()==IDOK) { POSITION ps; CString MultiFileName[MAX_PATH]; int FileNumber=0; ps=openDialog.GetStartPosition(); while(ps) { MultiFileName[FileNumber]=openDialog.GetNextPathName(ps); FileNumber++; } } delete []ptr; } but then also the problem did not got solved. openDialog.DoModal() is actually returning IDCANCEL when i select more than 12 files please help me it's very important for my project. Regards and thank's in advance Harshal shete Tag: How to determine the owner of serial port? Tag: 262621
  - 4
    - Running applications in Background I want to make an application in C (windows ) using Visual c++ 6.0 which runs in background. What do i need to do for it. There is no user input in the application . Tag: How to determine the owner of serial port? Tag: 262615
  - 5
    - Running applications in Background I want to make an application in C (windows ) using Visual c++ 6.0 which runs in background. What do i need to do for it. There is no user input in the application . Tag: How to determine the owner of serial port? Tag: 262614
  - 6
    - Running applications in Background I want to make an application in C (windows ) using Visual c++ 6.0 which runs in background. What do i need to do for it. There is no user input in the application . Tag: How to determine the owner of serial port? Tag: 262613
  - 7
    - CString memory allication question Hello there, I have a question on CStrings (the MFC class). When created from a character array, does the CString class free the memory of the array from which it was created automatically or does the caller have to to this? And if the later, can it be safely be done immediately after the construction of the CString? Here is an example. The question would be whether this code causes a memory leak or not. CString getSomeString() { TCHAR* test = new TCHAR[MAX_PATH]; _tcscpy(test, _T("myfile.txt")); return test; } void main() { while (true) { CString x = getSomeString(); } } Thanks in advance! Michael Tag: How to determine the owner of serial port? Tag: 262612
  - 8
    - Can I change the toolbar icon dynamically ? Hi, I need to change icon of my toolbar dynamically. I mean as per the state of the application, i need to change the icon. Like, I have a button on toolbar for checking mails. And I also have autocheck functionality. Now, when application is checking the mails, i need to show stop icon over there (on the same place). And after finishing checking, i need to show the normal check icon at that position. Can anybody let me know how can I achieve this using MFC ?? Regards, Jigar Mehta Tag: How to determine the owner of serial port? Tag: 262610
  - 9
    - char *pString question Hi folks, Easy one for the die-hard coders out there. I want to use a string in my program so I'm using a global (declared in the header file for my class) char *pString. So for example.. // In "MyClass.h" char *pString; In the .cpp file I wish to use this string i.e. assign it an intial value in the constructor such as - // In "MyClass.cpp" constructor pString = "Hello"; But, later on in the program I wish to reuse this same pointer to have different text. So for example, later on in the code I would like to make the string, for example, "Goodbye" such as - pString = "Goodbye"; Is there any harm in doing this? Thanks, David Tag: How to determine the owner of serial port? Tag: 262606
  - 10
    - bug: access to protected base class The following (simple, stripped down) combination of classes yields a compilation error at //1 using Visual C++ 2005 Express Edition : class A { public: typedef int type; }; class B { public: typedef A A_type; }; class C : protected B { public: using B::A_type; }; void test(C const & c) { //1 typedef C::A_type::type type; //2 typedef C::A_type a_type; typedef a_type::type type_2; } int main() { C c; test(c); } However, //2 , which is simply //1 broken up into two statements, does not yield a compilation error. Comeau compiles the code without error, and I cannot see any access-rule-violation in the code (that is, I agree with Comeau). Can anyone reproduce the bug on other versions of Visual Studio? Can anyone with a direct link to the VS-team report the bug? regards, Thomas Tag: How to determine the owner of serial port? Tag: 262600
  - 11
    - How to obtain the current highlighted folder of file? Hi everyone, I made a toolbar with a few buttons in Windows Explorer, and by clicking those buttons, I want take different actions on currently mouse selected folders or files. But so far I don't know how to set the function targeted on those folders and files, :( really need helps, have no clue how to do it... Sorry for my english... Millions of thanks Regards Michael Tag: How to determine the owner of serial port? Tag: 262596
  - 12
    - overloading conditonal operator Hello, i've written a class to abstract HANDLE's. now i want to override the conditional operator e.g.: class ApiHandle { ApiHandle() { m_Handle = INVALID_HANDLE_VALUE } ~ApiHandle() { if (m_Handle != INVALID_HANDLE_VALUE) CloseHandle(m_Handle); } ... protected: m_Handle; } ---- ApiHandle hProcess; hProcess = OpenProcess(...) if (hProcess) // how do i overload this conditional operator? { ... } i tried: BOOL operator==() { return m_Handle != INVALID_HANDLE_VALUE; } but this gives me compilation errors. Thanks in advance Christian Tag: How to determine the owner of serial port? Tag: 262594
  - 13
    - PictureBox Owner Draw Win32 How to make an owner drwan Picture Box in ATL ( not using MFC support). My aim to make the picture transparent in the dialog. I am using ATL composite control dialog. But in the Picture Control, there is no Owner draw property listed in Property Window. I manuall modified rc file and add SS_OWNERDRAW, But i am not gettiing the WM_DRAWITEM message.... I did try to set owner draw ::SetWindowLong( ::GetDlgItem( m_hWnd, IDC_STATIC_PIC ), GWL_STYLE, (::GetWindowLong(::GetDlgItem( m_hWnd, IDC_STATIC_PIC ), GWL_STYLE ) )| SS_OWNERDRAW ); also by SendDlgItemMessage() Since the I am not getting WM_DRAWITEM to my ATL dialog, i cant do anything to make picture box the transparent. Any suggestion , code are welcome Thanks Tag: How to determine the owner of serial port? Tag: 262590
  - 14
    - PictureBox Owner Draw How to make an owner drwan Picture Box in ATL ( not using MFC support). My aim to make the picture transparent in the dialog. I am using ATL composite control dialog. But in the Picture Control, there is no Owner draw property listed in Property Window. I manuall modified rc file and add SS_OWNERDRAW, But i am not gettiing the WM_DRAWITEM message.... I did try to set owner draw ::SetWindowLong( ::GetDlgItem( m_hWnd, IDC_STATIC_PIC ), GWL_STYLE, (::GetWindowLong(::GetDlgItem( m_hWnd, IDC_STATIC_PIC ), GWL_STYLE ) )| SS_OWNERDRAW ); also by SendDlgItemMessage() Since the I am not getting WM_DRAWITEM to my ATL dialog, i cant do anything to make picture box the transparent. Any suggestion , code are welcome Thanks Tag: How to determine the owner of serial port? Tag: 262588
  - 15
    - faq comp.lang.c++ Hi, What is the server of newsgroup comp.lang.c++, I can not add it to my outlook, help me. Thanks. Tag: How to determine the owner of serial port? Tag: 262580
  - 16
    - LNK2005 when using using overloaded malloc/free (dlmalloc) Hi, I want to use dlmalloc in VC C++ Projekt. dlmalloc (http://g.oswego.edu/dl/html/malloc.html) is a memory pool which performs (in my case) better than using the normal heap management. The files from dlmalloc are one *.c and one *.h file. I tried simply to add these files to my projekt. I then get LNK2005 error (multiple defined symbols) in the Debug Version. It compiles and links fine in the Release Version. But in the Release I get an exception in msize.c when the runtime initializes. I also tried to put dlmalloc into an extra static lib projekt, with the same results. I have tried to get this work for days now and I am not getting any further. With gcc and g++ I can just compile dlmalloc and link it into my application. But with Visual Studio I keep getting the mentioned behaviour. Any suggestions are highly welcome :) Thanks a lot, Chris Tag: How to determine the owner of serial port? Tag: 262573
  - 17
    - connection between 2 remote PCs Hey. OK assume this: PC1 192.168.1.100 -router 192.168.1.1 - internet addr. 123.11.22.33 PC2 192.168.0.100 -router 192.168.0.1 - internet addr. 456.44.55.66 How do I directly connect PC1 to PC2 using windows sockets so I can transfer something? ..... m_socket.Connect( uiPort, ????????............... Thanks Ufit Tag: How to determine the owner of serial port? Tag: 262566
  - 18
    - strcpy_s and friends Having at last upgraded to VC++2005, I am getting the usual myriad of errors and warnings one normally gets when porting a project to a new compiuler. I notice it *really* *really* wants me to use strcpy_s() etc instead of strcpy() etc. Out of curioity: I was under the impression that strcpy() was written into the tablets of stone which define the standard C-runtime library. Does strcpy_s() have a similar status or is it just a good wheeze by Microsoft to prevent them getting millions of complaints occasioned by buffer oveflows? [I am thinking about code portability here.] Dave -- David Webber Author MOZART the music processor for Windows - http://www.mozart.co.uk For discussion/support see http://www.mozart.co.uk/mzusers/mailinglist.htm Tag: How to determine the owner of serial port? Tag: 262563
  - 19
    - strftime crash?! Hi, I am using Microsoft Visual C++ Express Edition and have observed a nasty crash happening with the "strftime" function when you pass a format string that is not recognized by it. This code for instance seems to cause it to choke: char szBuffer[41]; tm *pTime; time_t now; time( &now ); pTime = localtime( &now ); // // crrrrasshh!! note the "%q" format specifier which is not // recognized by "strftime" // size_t len = strftime( buffer, 40, "%m-%d-%y %H:%M:%S,%q", pTime ); I would have expected the function to just ignore format specifiers that it didn't know about. Is it something wrong that I am doing or is it a bug? Please help. Thanks. -- Ranju. V http://nerdworks.in/ -- Tag: How to determine the owner of serial port? Tag: 262555
  - 20
    - Variable number of arguments problem Hello, I have a class, which supports rollback for certain methods. Calls to these methods have the same pattern: class X { ... bool Validate() const; void BeginChange(); void CommitChange(); void RollbackChange(); ... bool SafeCall(bool (X::*pfn)()) { bool res = false; if(Validate()) { BeginChange(); res = (this->*pfn)(); if(res) CommitChange(); else RollbackChange(); } return res; } }; My problem is with passing parameters to method of class X. I could make SafeCall function as template and overload it for 0-N parameters. However, it will be ugly and unmaintainable. I could make small template for method call only: template < typename T, typename Result, typename P1, ..., typename PN> struct Call { Result operator()( T* This, Result (T::*Pm)(P1), P1 p1) { return (This->*Pm)(p1); } ... // all overloads from P1 to P1 - PN }; But I don't know how to embed it inside X::SafeCall without changing SafeCall signature for each overload. Currently I have quite unpleasant macro to solve this. I want to get rid of it. Unfortunately, I can't use boost::tuple/std::tr1::tuple. Is there any feasible solution for my problem? Thanks in advance Alex Tag: How to determine the owner of serial port? Tag: 262544
  - 21
    - Porting VC6 program to VC.NET 2002 Dear all, I have an open source program that I want to port from VC6 to VC.NET. I basically used the VC6 project file and opened it in VC.NET then resave it However, the program requires UNICODE which just failed the compilation. The errors were a) CMiniFrameWnd::CreateEx (dwExStyle, NULL, &afxChNil, dwStyle, rectDefault, pParent) error C2065: 'afxChNil' : undeclared identifier b) BEGIN_MESSAGE_MAP(CCoolBar, baseCCoolBar) //{{AFX_MSG_MAP(CCoolBar) ON_WM_NCHITTEST() ON_WM_NCLBUTTONUP() ON_WM_SIZE() //}}AFX_MSG_MAP ON_MESSAGE(WM_SETTEXT, OnSetText) ON_MESSAGE(WM_NOTIFY, OnNotify) END_MESSAGE_MAP() error C2440: 'static_cast' : cannot convert from 'BOOL (__thiscall CCoolBar::* )(WPARAM,LPARAM,LRESULT *)' to 'LRESULT (__thiscall CWnd::* )(WPARAM,LPARAM)' I just can supply this much because the program was quite large. Any comments are welcome! Thanks Jack Tag: How to determine the owner of serial port? Tag: 262543
  - 22
    - reference type Hi all, if an object is pointed by a iterator, when we take the dereference of this iterator. it should return the lvalue instead of the rvalue. So if p is a mutable iterator, value type is T then *p should return T& not T. Can somebody explain this rule? Thanks Jack Tag: How to determine the owner of serial port? Tag: 262538
  - 23
    - What is partial specialization? template <class Iterator> struct iterator_traits<const T*> typedef T value_type; }; Don't understand Thanks Jack Tag: How to determine the owner of serial port? Tag: 262535
  - 24
    - Simple -> question struct int_node { int val; int_node *next; }; template <class Node> struct node_wrap { Node *ptr; node_wrap (Node *p = 0) : ptr(p) { } Node& operator *() const { return *ptr; } Node* operator->() const { return ptr; } node_wrap& operator++() { ptr = ptr->next; return *this; } node_wrap operator++(int) { node_wrap tmp = *this; ++*this; return tmp; } bool operator==(const node_wrap& i) const { return ptr == i.ptr; } bool operator !=(const node_wrap& i) cont { return ptr != i.ptr; } }; bool operator==(const int_node&, int n) { return node.val == n; } bool operator!=(const int_node& node, int n) { return node.val != n; } void main() { int_node *lost_head, *list_tail; int_node *in = new(int_node); in->val = 100; in->next = 0; list_head = list_tail = in; for (int i = 0; i < 10; ++i) { int_node* in = new (int_node); in->val = i; in->next = 0; list_tail->next = in; list_tail = in; } // content 100,0,1,2,3,4,5,6,7,8,9 node_wrap<int_node> r; r = find (node_wrap<int_node>(list_head), node_wrap<int_node>(), 10); if ( r != node_wrap<int_node>()) std::cout << (*r).val << std::endl; //output: none r = find (node_wrap<int_node>(list_head), node_wrap<int_node>(), 3); if (r != node_wrap<int_node>()) std::cout << (*r).val << std::endl; } I don't see why list_tail->next = in is needed. What is the final structure? What the programmer is trying to achieve? Thanks Jack Tag: How to determine the owner of serial port? Tag: 262529
  - 25
    - Bug List Does anybody know of a bug list for VC compilers?? I found a bug in the old version 6 compiler, and while I'm sure I'm not the first person to have run into this, I'd like to at least document the problem (and find out what other Known issues there are, to avoid beating my head against a wall) ... Tag: How to determine the owner of serial port? Tag: 262526
- Next
  - 1
    - .NET 2005 C++ iostream link error Anybody know why this does not link? I have tried google 50 odd ways and nobody else seems to have this problem quite. It is meant to be a console application... #include <iostream> int main(){return 0;} ------ Build started: Project: HelloWorld, Configuration: Debug Win32 ------ Compiling... HelloWorld.cpp Linking... HelloWorld.obj : error LNK2019: unresolved external symbol "public: __thiscall std::ios_base::Init::Init(void)" (??0Init@ios_base@std@@QAE@XZ) referenced in function "void __cdecl std::`dynamic initializer for '_Ios_init''(void)" (??__E_Ios_init@std@@YAXXZ) HelloWorld.obj : error LNK2019: unresolved external symbol "public: __thiscall std::ios_base::Init::~Init(void)" (??1Init@ios_base@std@@QAE@XZ) referenced in function "void __cdecl std::`dynamic atexit destructor for '_Ios_init''(void)" (??__F_Ios_init@std@@YAXXZ) C:\Documents and Settings\Kerewin\My Documents\Visual Studio 2005\Projects\HelloWorld\Debug\HelloWorld.exe : fatal error LNK1120: 2 unresolved externals Build log was saved at "file://c:\Documents and Settings\KKere\My Documents\Visual Studio 2005\Projects\HelloWorld\HelloWorld\Debug\BuildLog.htm" HelloWorld - 3 error(s), 0 warning(s) ========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== Points to note: 1. Strictly .NET 2005 C++ unmanaged. 2. Statically linking in LIBCPMTD.lib 3. Compiling with C++ exceptions enabled, /EHsc 4. XP Pro dev. environment. Any ideas? Oh, BTW http://comsc.dvc.edu/UsingVisualStudioNET05.pdf has a demo which apparently works... But not for me! Tag: How to determine the owner of serial port? Tag: 262525
  - 2
    - Slow OS response with growing project I am using Visual C++ .NET Version 7.1.3088 to construct a Solution containing multiple projects. I run on a Dell PC using XP but the source files are on a server running OS Windows Server 2003 Service Pack 1. Over the past several months, I have gradually been adding source files to the projects. Right now I have a total of 113 source files being built in. What has happened is that somewhere along the line as my project has been growing, some aspect of it is affecting the way the OS is behaving. An example: If I simply start up Visual C++ .NET for this project (ie not building or editting or anything else), and I go to some other folder on the Server using Explorer and copy a small file (about 2 KB in size, using CTRL C, CTRL V) it is now taking about 35 seconds to do the copy! And this file has nothing to do with my project. It does not look like a very slow steady copy, it looks like something is blocking the command and then finally it does the copy. In this dead time, no controls in Visual C++ .NET respond to inputs either. If I shut down Visual C++ .NET, things are back to normal. If I load a "smaller" project, the problem does not come up. I am not sure how to quantify "smaller"; I tried deleting files out of my project to see if I could find an "edge". If I deleted enough out, the behavior went away, but I was not able to narrow it down to a specific number of files (or a specific file.) The phenomenum occurs for other users using other desktop PCs and the same server. It appears that it may not happen for other servers. Also if I operate entirely on a desktop PC, there is no problem. Does anyone have any idea what this is all about and how we can go about diagnosing the source of the problem? -- Wayne Tag: How to determine the owner of serial port? Tag: 262524
  - 3
    - Function pointer class member.. Is it possible for the function f1 in the following code to access A.i? Without change void (*f)() to void (*f)(A) and call f1(a).... #include <iostream> using namespace std; class A { public: int i; void (*f)(); } a; void f1() { cout << "test"; } int main() { a.f = f1; (*a.f)(); } Tag: How to determine the owner of serial port? Tag: 262520
  - 4
    - VC2005 and boost::shared_ptr Hello group, There seems to be a bug int the interop layer in VC2005 when dealing with certain pointer types (or values?) Here is a repro case using Boost version 1.32 and C++/CLI : using namespace System; #pragma unmanaged #include <boost/shared_ptr.hpp> boost::shared_ptr<int> ReturnAPointer() { return boost::shared_ptr<int>(); } #pragma managed int main(array<System::String ^> ^args) { boost::shared_ptr<int> ptr=ReturnAPointer(); if (ptr) { System::Console::WriteLine("integer : "+ (*ptr)); } } ReturnAPointer clearly returns a NULL smart pointer (px==0). The boolean operator for shared_ptr is : typedef T * this_type::*unspecified_bool_type; operator unspecified_bool_type() const // never throws { return px == 0? 0: &this_type::px; } Clearly, this operator should return an int** equal to 0, and indeed it does so in the native layer. However, back in managed code, the return value of boolean operator - as shown by Visual 2005 - is 0xffffffff. Therefore, the WriteLine function is called, which, of course causes an assertion in shared_ptr::operator*. The obvious workaround is to replace the test by : if (ptr.get()!=NULL) But it kind-of defeats the whole purpose of shared_ptr' boolean operator, and it may be difficult to find those cases in existing code. Before I report this to MS feedback, can anyone confirm the behaviour? Any idea on a solution? Thanks in advance Arnaud MVP - VC PS : The problem is the same whatever the specialisation of shared_ptr Tag: How to determine the owner of serial port? Tag: 262515
  - 5
    - Access Violation Questions What cause Access Violation? How fix Access Violation? What is Access Violation? My AfxLoadLibrary(module.c_str()); cause a Access Violation, and I don't know how to fix, the curious is: I has 2 modules, then if I load module 1 all work fine, than when I try load module 2 I receive 998, if I load module 2 first all work fine, than when I try load module 1 I receive 998 Thanks for any help Tag: How to determine the owner of serial port? Tag: 262509
  - 6
    - VS2005 Add Event Handler (Apologies if double psot) Hi I'm making a menustrip for my main dialog - and I go into Add Event Handler and the class list and message type lists are both blank. There are items in them, because I've clicked in them and been able to change stuff, however I can't see the items. Screenshot's at http://i12.photobucket.com/albums/a214/LtBrenton/blankAEH.jpg (the name of the project's blanked out, but you can see the problem) Any ideas? -Lt PS: Sorry if this is a double post, I had some weird errors off OE so I'm sending it again :) Tag: How to determine the owner of serial port? Tag: 262507
  - 7
    - VS2005 Add Event Handler Hi I'm making a menustrip for my main dialog - and I go into Add Event Handler and the class list and message type lists are both blank. There are items in them, because I've clicked in them and been able to change stuff, however I can't see the items. Screenshot's at http://i12.photobucket.com/albums/a214/LtBrenton/blankAEH.jpg (the name of the project's blanked out, but you can see the problem) Any ideas? -Lt Tag: How to determine the owner of serial port? Tag: 262506
  - 8
    - Design for SCROLLINFO ??? Hello: *This is a design question, so do not try to understand the logic of what variables are supposed to do, for this is not relevant to my question. I have the following code in the WM_SIZE handler: case WM_SIZE: cxClient = LOWORD(lParam); cyClient = HIWORD(lParam); SetRect(&rectA1,_RECTA1_xTL,_RECTA1_yTL,_RECTA1_xRB,_RECTA1_yRB); si.cbSize = sizeof(si); si.fMask = SIF_RANGE | SIF_PAGE; si.nMin = iMinLines; si.nMax = ((iMaxLines-1)-_pdmTOTALOFLIMITS); si.nPage = ((_RECTA1_yRB - _RECTA1_yTL)/cyChar); SetScrollInfo(hwnd,SB_VERT,&si,TRUE); return 0; However, in my WM_COMMAND handler, I have a switch statement with 10 case conditions, where each 'case' needs to modify the SCROLLINFO structure. So right now I am doing redundant coding as so: case WM_COMMAND: switch (LOWORD(wParam)) { case : 1 //Set new limits _pdvSTARTITEMLINES = 1; _pdvFINISHITEMLINES= 5; si.cbSize = sizeof(si); si.fMask = SIF_RANGE | SIF_PAGE; si.nMin = iMinLines; si.nMax = ((iMaxLines-1)-_pdmTOTALOFLIMITS); si.nPage = ((_RECTA1_yRB - _RECTA1_yTL)/cyChar); SetScrollInfo(hwnd,SB_VERT,&si,TRUE); break; case 2: //Set new limits _pdvSTARTITEMLINES = 10; _pdvFINISHITEMLINES= 15; si.cbSize = sizeof(si); si.fMask = SIF_RANGE | SIF_PAGE; si.nMin = iMinLines; si.nMax = ((iMaxLines-1)-_pdmTOTALOFLIMITS); si.nPage = ((_RECTA1_yRB - _RECTA1_yTL)/cyChar); SetScrollInfo(hwnd,SB_VERT,&si,TRUE); break; case 3: //Set new limits _pdvSTARTITEMLINES = 2; _pdvFINISHITEMLINES= 20; si.cbSize = sizeof(si); si.fMask = SIF_RANGE | SIF_PAGE; si.nMin = iMinLines; si.nMax = ((iMaxLines-1)-_pdmTOTALOFLIMITS); si.nPage = ((_RECTA1_yRB - _RECTA1_yTL)/cyChar); SetScrollInfo(hwnd,SB_VERT,&si,TRUE); break; and so on... anyways , you get the idea.... this repeats for 10 times! Is their another way to set the SCROLLINFO structure without re-writting the following code for every case of the switch statement: si.cbSize = sizeof(si); si.fMask = SIF_RANGE | SIF_PAGE; si.nMin = iMinLines; si.nMax = ((iMaxLines-1)-_pdmTOTALOFLIMITS); si.nPage = ((_RECTA1_yRB - _RECTA1_yTL)/cyChar); SetScrollInfo(hwnd,SB_VERT,&si,TRUE); I tried to replace the above code with a SendMessage command as so: SendMessage(hwnd,WM_SIZE,NULL,NULL); so this would rise the WM_SIZE message in the queue and therefore re-fetch the SCROLLINFO definition in WM_SIZE. However, the fact that WM_SIZE also contains the definition for cyClient and cxClient, this assigned unwanted values to these variables. So, what to do in a case like this... should I do a local function and repeat the SCROLLINFO definitions in there...or use an 'if' statement in the WM_SIZE handler to not repeat unwanted code when doing the SendMessage instance (this doesn't sound like good coding habits)... Any suggestions would help. Thanking all in advance! -- Best regards Robert Tag: How to determine the owner of serial port? Tag: 262494
  - 9
    - Range checking before atol I would like to perform underflow and overflow checks before invoking the atol function. What is the correct way? The input to atol is a MFC CString. const CString input_value = "99999999999999999999999999999"; // how do I check the input_value is suitable for a long type? Tag: How to determine the owner of serial port? Tag: 262492
  - 10
    - Text parser library? Any exists C++ text parser library? Basically I need to parse the delimited text (fields separated by comma, tab, etc) to another text file in different structure. It's better the code use an xml or other format define the source/destinate mapping. Tag: How to determine the owner of serial port? Tag: 262491
  - 11
    - Difference between static_cast and C-Style casting I understand that dynamic_cast is safer than static_cast... and dynamic_cast do some sort of "type checking"... But what's the major difference between static_cast and C style casting? Or, why there is a static_cast? []s Fred Tag: How to determine the owner of serial port? Tag: 262482
  - 12
    - close() on a closed file descriptor in Visual Studio 8 Hi, normally closing a closed file descriptor is not a big deal, it just returns EBADF and everybody goes on with their lives. In Visual Studio 8 it seems to throw up an assertion. I'm dealing with some code that just goes through the file descriptor table and closes them all (pretty typical thing to do in Unix world and OK thing to do on Windows... until now). Would appreciate any ideas on how to change the behaviour of close() to relax and not assert it. Is there any way to tell whether fd is open (without digging into internal data structures of CRT)? Tag: How to determine the owner of serial port? Tag: 262478
  - 13
    - user breakpoint errors? I get an error "User breakpoint called from code at 0x...." Can someone explain to me what this means? When I catch it in the debugger, I scroll back through the call stack (passing the NTDLL calls) and its at the point where I delete an object. Some how this delete is throwing an exception, but I'm not sure why. Any ideas? Below is the code segment, but its not weird. mCleanBuffer is a BYTE * that's dynamically allocated at startup. try { //XTRACED1 ("'%d' attributes IVMsg", mAttribList.GetCount()); if (! mAttribList.IsEmpty () ) mAttribList.RemoveAll(); if (mCleanMsgBuffer != NULL) { delete [] mCleanMsgBuffer; <---- exception point mCleanMsgBuffer = NULL; } } catch (...) { XTRACEW0 ("Caught exception attempting to delete message buffer"); } TIA -C Tag: How to determine the owner of serial port? Tag: 262477
  - 14
    - Interpreting memory usage information I've got a memory problem that I'm trying to debug; as part of this, I occasionally check image size using Task Manager. I am seeing that "Mem Usage" is larger than "VM Size". How can this be? My understanding is that "Mem Usage" is the amount of memory actually mapped to RAM whereas "VM Size" is the total amount of memory mapped, whether to RAM or not. What am I not understanding? Thanks! Tag: How to determine the owner of serial port? Tag: 262476
  - 15
    - environment not passed to DLL I am having a problem with the environment variables after upgrading from VC6 to VC8. We have an executable which launches Java via the JNI_CreateJavaVM method in jvm.dll. Before launching the JVM we create several environment variables which the JVM uses. We are using SetEnvironmentVariable (have also tried _putenv) to set the variables in our process. Calls to GetEnvironmentVariable confirm that the variables are set properly. However, Java, launched through the dll, does not see the variables. The same exact code works if compiled with VC6. It only fails with VC8. Also, I tried creating another executable which modifies the environment variables then calls CreateProcess to start the other executable. In this case, it works and the JVM can see the environment variables. Did something change in VC8 that would cause this behavior? Tag: How to determine the owner of serial port? Tag: 262472
  - 16
    - Factory pressed dvd movies, ps2, psp & xbox backups for sale !!! We're offering all the latest factory pressed high quality dvd movies, ps2, psp and xbox silvers with factory printed colour inserts at fantastic prices, whether for personal use or reselling. We're shipping worldwide with various shipping methods. For resellers, please contact us for bulk discounts. For a complete list and prices, please email us at movieworld@time.net.my (Please state the type of list that you want and tell us your location as the prices varies for different locations. If you're reseller, please state the quantity you wish to order per shipment and we'll quote you a wholesale price depending on the quantity ordered.) * If you need references, we can provide them to you. Tag: How to determine the owner of serial port? Tag: 262469
  - 17
    - error C2061: syntax error : identifier 'Timer' Timer.h contains the following class Timer {}; and results in the following error: XYZ error C2061: syntax error : identifier 'Timer' Please advise Tag: How to determine the owner of serial port? Tag: 262467
  - 18
    - Software product activation solution April 06, 2006 Softnokey SDK 1.3 released. 1. Version 1.3 is Freeware 2. Easy to use 3. No DLL required 4. Visual C++ library 5. Delphi component 6. C++ Builder component http://www.freewebs.com/softwarenokey/ Tag: How to determine the owner of serial port? Tag: 262464
  - 19
    - LoadLibrary Error Hi All, I'm trying use LoadLibrary, but always fail, and I get error 998 (GetLastError();) How I fix this. HINSTANCE module = LoadLibrary("E:\\project-ucs\\_project\\system\\soa\\source-ucsms\\out-project\\debug\\wiz-addter.dll"); if(module == NULL) { // error // GetLastError(); MessageBox(err.c_str()); } Thanks Tag: How to determine the owner of serial port? Tag: 262460
  - 20
    - Magically appearing prototypes I've inherited a fairly complex application written using MSVC v6, which appears to rely on some odd features. It's behaviour with regard to header files and prototypes is strange. It seems often unnecessary to include a header or declare a prototype. For example the code uses "localtime", but does include time.h anywhere. Still, if the wrong number of arguments are given for localtime it gives an error. Windows.h is not included in many files, and it's functions still work. It does this with precompiled headers enabled or disabled. How is it doing this? Are prototypes being stored in a separate file somewhere? Is it possible to stop it from doing this, or at least emit warnings when missing prototypes are encountered? Tag: How to determine the owner of serial port? Tag: 262454
  - 21
    - Interesting #define #ifdef behavior Hello, I just spent an hour debugging an interesting problem involving the MS VC++ v6 compiler. Like most developers, we use #defines to trigger when certain code should be used. I found a module that simply refuses to process certain #defines and even #pragma message statements early in the source file. I'd like to know what problem I've run into and what the proper resolution needs to be. Obviously I can fix the code I'm working on. My problem comes with examining all our other code to look for similar problems. A short example follows: ===== start of sample code ===== // Uncomment the following line to use the secure servers #define USE_HTTPS_INSTEAD_OF_HTTP // NOTE: The above line is not honored and does not define the value. // NOTE: Neither of the messages appear in the compiler output. #ifdef USE_HTTPS_INSTEAD_OF_HTTP #pragma message( "Using HTTPS" ) #else #pragma message( "Using HTTP" ) #endif #include "StdAfx.h" #include "Delivery.h" #include <afxinet.h> #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif // NOTE: The following define is honored, but the one at the beginning of the file is not. // NOTE: The line was copied and not retyped. It appears to be where the #define // is located in the file. #define USE_HTTPS_INSTEAD_OF_HTTP // Much later in the source the following code appears #ifdef USE_HTTPS_INSTEAD_OF_HTTP printf ("Using HTTPS Connection\n"); CHttpConnection *HTTPConnection = InternetSession.GetHttpConnection (ServerList.GetAt (ServerIndex), HTTPS_FLAGS, HTTPS_PORT); #else printf ("Using HTTP Connection\n"); CHttpConnection *HTTPConnection = InternetSession.GetHttpConnection (ServerList.GetAt (ServerIndex), HTTP_FLAGS, HTTP_PORT); #endif // PROBLEM: Unless the second #define is added, the code always uses the HTTP Connection. ===== end of sample code ===== Thank you for your help, David Tag: How to determine the owner of serial port? Tag: 262450
  - 22
    - Owner Draw Win32 How to make an owner drwan Picture Box ( not using MFC support) I need the picture transparent in the in ATL composite dialog. Any suggestion , code are welcome Thanks Anil Tag: How to determine the owner of serial port? Tag: 262444
  - 23
    - pointer conversion issue in 64 bit xp hi all, i m facing an issue which is mentioned here: i m using a xp 64 bit machine i have a register function defined in a 32 bit component which is running on a 64 bit machine using wow64 support i need to call this register function from a 64 bit ported component. register function is smthing like this: typedef void (*PAUTHFUNCTION)( int,int) int register(HANDLE context,PAUTHFUNCTION); if i call this function from a 64 bit comp: like this void authfunction(int a ,int b) { --- } register(context,authfunction); i pass a 64 bit adress so far as authfunction is concerned,which is not understood by the 32 bit component where actually this register function is defined,and hence my registration is failing. can anyone provide a solution for it,actually i m kind of stuck waiitn for the response thanks in advance joyjit Tag: How to determine the owner of serial port? Tag: 262440
  - 24
    - Template and VS 2005 Hello, my project contains this files : Myfile.h template <int nbCar> class X: public Y { public: X(const QString &val); ~X(); X<nbCar> &f(const char *lpsz); }; MyFile .cpp template <int nbCar> X<nbCar>::X(const QString &val):Y(0, nbCar, val){ TRACE_CTOR(Qstring("X<%1>").arg(nbCar)); } template <int nbCar> X<nbCar>::~X(){ TRACE_DTOR(Qstring("X<%1>").arg(nbCar)); } template <int nbCar> X<nbCar> &X<nbCar>::fconst char *lpsz) { SetVal(lpsz); return *this; } I have no problem to compil MyFile.cpp, but I have this links errors .... AnotherFile.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall X<10>::X<10>(void)" (??1?$X@$09@@UAE@XZ) AnotherFile : error LNK2001: unresolved external symbol "public: virtual __thiscall X<10>::~X<10>(void)" (??1?$X@$09@@UAE@XZ) Why ? Thanks Stéphane Tag: How to determine the owner of serial port? Tag: 262439
  - 25
    - Valid File Name in Windows Hi all, In Windows characters lile * < > etc are not allowed in file name. Is there any such API or registery entries to get the list of invalid characters.? Thanks and Regards Ashish Garg Tag: How to determine the owner of serial port? Tag: 262438

Hi folks,

is there a way to determine the owner of a serial port?
I would like to log the name of the application/service that opened a
serial port in case my service failes to open it. (How) can this be
done?
Any informations are appreciated.

Top

Re: How to determine the owner of serial port? by Stuart

Stuart
Wed Apr 12 02:15:17 CDT 2006

internetsux@hotmail.com wrote:
> Hi folks,
>
> is there a way to determine the owner of a serial port?
> I would like to log the name of the application/service that opened a
> serial port in case my service failes to open it. (How) can this be
> done?
> Any informations are appreciated.
>

It seems as if this was not a problem under linux, but I can't find
anything about that for windows. I'd be very happy if I were able to
find out the owner of file locks, but it seems as if the Win32 API
doesn't support this kind of information :-(

Stuart

Top

Re: How to determine the owner of serial port? by Stuart

Stuart
Tue Apr 18 03:07:41 CDT 2006

internetsux@hotmail.com wrote:
> Hi folks,
>
> is there a way to determine the owner of a serial port?
> I would like to log the name of the application/service that opened a
> serial port in case my service failes to open it. (How) can this be
> done?
> Any informations are appreciated.
>

It seems as if this was not a problem under linux, but I can't find
anything about that for windows. I'd be very happy if I were able to
find out the owner of file locks, but it seems as if the Win32 API
doesn't support this kind of information :-(

Stuart

Top