ActiveX controls in MFC DLLs Dialog (solution worth mensioning)

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  - 1
    - ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Hi NewBies, I had a crash in winocc.cpp line 301 when trying to add DLL to a MFC ATL dialog and call from a CView App. After 100 trials my friend poped me a suggestion worth a ton of Gold ! To prevent crash in DLL when hosting an activex contrl inside a MFC DLL dialog Ensure the following In InitInstance of the DLL App class Have AfxEnableControlContainer() as the first line; In your calling applications view invoke the DLL as CoInitializeEx(NULL, COINIT_MULTITHREADED); I had it working but any ideas of why it is working ? Experts please help ! Thanks Deepak Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255758
  - 2
    - auto_ptr struct A { int a; int b; int c; }; Now I define an auto_ptr to point to a new area of memory... auto_ptr<A> a = new char[20]; Now when I do... delete a; Does it delete 12 bytes (the size of A) or 20 bytes (the size allocated)? -- Best regards Mark Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255757
  - 3
    - winsock2.h and inclusion order I get a weird problem when I include winsock2.h before my own util.h, which defines some general (templated) utility functions in it's own namespace. The compiler (embedded visual C++) gives me a few syntax errors on my util.h file when I include winsock2.h first. However, when I include them in the other order (so first util.h, then winsock.h), everything is fine. I am most puzzled. Is there some issue with winsock2.h? Actually, it behaves the same way with winsock.h. I can hardly believe there's a quirk in a header as often used as winsock, but the error can't really be in my own code, since it's really simple, clear code, which works fine in other circumstances. Any ideas? regards Mark NB: if this is not the correct newsgroup for this question, feel free to boot me to the correct one. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255756
  - 4
    - for(;;) scope Hi everyone! Revising some code I've found this: for(int i=0; i<m_aArray.GetSize(); i++) { ... if(bCondition) break; } if( i==m_aArray.GetSize()) { // The condition was not satisfied so do whatever ... } That caused an ASSERT(HowCanItBe) into my brain. If "i" is declared into the "for", how is possible to use it later? The code compile right, so Was I wrong thinking that "i" _is_declared_ into the "for"? Then, talking with the partners at work someone pointed out that in VS you can do it, but in C++Builder it wouldn't compile. The question is What is the standard? And how are declared that kinds of variables? Thank you in advance. Regards. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255750
  - 5
    - how to make my ocx like flash movie? Dear all. first.. i'm poor for english. --;; I'm write VC++ 6.0 activex control that contains shockwave flash control. I can catch fs command from flash control in my ocx(1), but how can I pass it to web page? (2) (1) (2) flash movie -> flash control -> my ocx -> web page I've thought it would be able by firing event from my ocx to web page which named 'fscommand', but it does not work. What shall I do? Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255746
  - 6
    - Operator Overloading I know that you can overload objects, but can the standard data types (integers, short, long, floats, etc.) have their = operator overloaded? I am developing a client server data application in C++ and I don't want to poll to see if the data has changed. I was thinking that overlaoding the = operator would indicate when there has been a change. Ofcourse I could make my own classes, but I have tens of thousands of lines of code that use the standard data types. Bascially, I just want to know what data has been changed and update it to the server without changing my exisitng code if possible. Is it possible to have an event triggered when a variable is changed? Overloading the = operator would be the same idea. Just wondering if there is something in MFC or the C++ language that would tell me when the value of a variable changes. The catch is that it has to be efficent too since my app has 750,000 variables. Are there any low level hooks into the OS that would help? I know its asking a lot, but does anyone have any ideas? Thanks for the help. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255745
  - 7
    - Static library problem Hi, I have a problem with static libraries in Visual Studio 2003. My problem is the following: I have project 'BaseFramework' which is a static library(.lib) project, this project uses some C functions from a vendor. I also have a project B which is an application(.exe) project, this project includes the a.lib file. The 'BaseFramework' project builds just fine, but my problem is that when I try to build project B I get a lot LNK2019 errors saing that the linker cannot resolve the C functions that the 'BaseFramework' project is using, like this: BaseFramework.lib(InetAddress.obj) : error LNK2019: unresolved external symbol _htonl@4 referenced in function "public: __thiscall BaseFramework::Wrapper::Net::InetAddress::InetAddress(unsigned short)" (??0InetAddress@Net@Wrapper@BaseFramework@@QAE@G@Z) Does anybody have clue as to what I should do? /Regards Rasmus Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255741
  - 8
    - using PRINTDLGEX API call to select a printer I'm new to API calls & using Visual C++, I have tried using this code (see below) from the MSDN website, but get compile errors right at the first line: : error C2065: 'LPPRINTDLGEX' : undeclared identifier : error C2146: syntax error : missing ';' before identifier 'pPDX' : error C2065: 'pPDX' : undeclared identifier we are using VFP 6.0 and using the older PrintDLG API call but are getting an intermittent problem (which is happening more & more as more of our users are using Window XP) where selecting a printer doesn't work. With Win9X we just used to run in a loop in VFP to get the user to select the printer again and it would normally be OK. I'm trying to use 'PPRINTDLGEX' instead to see if this solves the problem. Is this the best group to post this question even?! Please help!!! Grant. HRESULT DisplayPrintPropertySheet( HWND hWnd // Window that owns the property sheet ) { HRESULT hResult; LPPRINTDLGEX pPDX = NULL; LPPRINTPAGERANGE pPageRanges = NULL; // Allocate the PRINTDLGEX structure. pPDX = (LPPRINTDLGEX)GlobalAlloc(GPTR, sizeof(PRINTDLGEX)); if (!pPDX) return E_OUTOFMEMORY; // Allocate an array of PRINTPAGERANGE structures. pPageRanges = (LPPRINTPAGERANGE) GlobalAlloc(GPTR, 10 * sizeof(PRINTPAGERANGE)); if (!pPageRanges) return E_OUTOFMEMORY; // Initialize the PRINTDLGEX structure. pPDX->lStructSize = sizeof(PRINTDLGEX); pPDX->hwndOwner = hWnd; pPDX->hDevMode = NULL; pPDX->hDevNames = NULL; pPDX->hDC = NULL; pPDX->Flags = PD_RETURNDC | PD_COLLATE; pPDX->Flags2 = 0; pPDX->ExclusionFlags = 0; pPDX->nPageRanges = 0; pPDX->nMaxPageRanges = 10; pPDX->lpPageRanges = pPageRanges; pPDX->nMinPage = 1; pPDX->nMaxPage = 1000; pPDX->nCopies = 1; pPDX->hInstance = 0; pPDX->lpPrintTemplateName = NULL; pPDX->lpCallback = NULL; pPDX->nPropertyPages = 0; pPDX->lphPropertyPages = NULL; pPDX->nStartPage = START_PAGE_GENERAL; pPDX->dwResultAction = 0; // Invoke the Print property sheet. hResult = PrintDlgEx(pPDX); if ( (hResult == S_OK) && pPDX->dwResultAction == PD_RESULT_PRINT) { // User clicked the Print button, so // use the DC and other information returned in the // PRINTDLGEX structure to print the document } if (pPDX->hDC != NULL) DeleteDC(pPDX->hDC); if (pPDX->hDevMode != NULL) GlobalFree(pPDX->hDevMode); if (pPDX->hDevNames != NULL) GlobalFree(pPDX->hDevNames); return hResult; } Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255737
  - 9
    - Errors reported in VS 2005 I'm trying to move an app from VS6 to VS2005 and am getting some errors in message map: 3>.\MyApp.cpp(720) : error C2440: 'static_cast' : cannot convert from 'void (__thiscall CMyApp::* )(BOOL,HTASK)' to 'void (__thiscall CWnd::* )(BOOL,DWORD)' 3> Cast from base to derived requires dynamic_cast or static_cast on this line: ON_WM_ACTIVATEAPP() and: 3>.\MyApp.cpp(934) : error C2440: 'static_cast' : cannot convert from 'void (__thiscall CMyApp::* )(UINT)' to 'BOOL (__thiscall CCmdTarget::* )(UINT,NMHDR *,LRESULT *)' 3> None of the functions with this name in scope match the target type on this line: ON_NOTIFY_EX(TBN_DROPDOWN, ID_DISPLAY_SOMETHING, OnDisplayButtonMenu) What is the solution to this? Thanks, Drew Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255733
  - 10
    - LoadLibrary("rsaenh.dll") succeeds in Debugger, fails otherwise (Win I call LoadLibrary("rsaenh.dll") from a huge MFC MDI application (which is done implicitly by CryptAcquireContext(), my actual target API call :)). On Windows 2003 Server it fails, GetLastError() yields 0x000003E6 == 998 == ERROR_NOACCESS ("Invalid access to memory location") which probably means an access violation during dll startup. But if I connect a remote debugger (msvcmon -anyuser -tcpip) just before the LoadLibrary() call, it succeeds. Also on WinXP and Win2000 Server the call succeeds (even without debugger). Calling LoadLibraryEx() with DONT_RESOLVE_DLL_REFERENCES succeeds also on Win2003 Server, but a subsequent CryptAcquireContext() fails, supposedly because the library is not fully loaded. I obtained a hot fix from Microsoft support which seems to fit my problem (see http://support.microsoft.com/default.aspx?scid=kb;en-us;899750&sd=rss&spid=3198), but unfortunately it didn't help. Anybody knows what's going on here? Thx & regards, Stephan Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255732
  - 11
    - Should I use stsic class for DBAccess ? Hi I'm creating a small IS and I'm wondering if is a good idea to create one static class which will hold methods that will access the database. So I'd have only one class in the memory used for all db access. I think it is a good solution but .. maybe not. What do you think . ?? I have a class public static class DB Access { public static void InsertUse(string username) { ..... } .... } Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255728
  - 12
    - catching messages for control in dialog I am creating a dialog without MFC and have run into yet another problem. When I make my call to DialogBoxParam() to create and show the dialog, I supply it with a function that will handle the messages from the dialog. This has been working fine and things are coming along, until... I wanted to catch mouse messages for my list view that is in the dialog. If I click anywhere else in the dialog, I can catch the button down message, but if I click in the list view area, the message is not sent to the function. Where is it sent? I can only supply one DLGPROC so I'm not sure what to do at this point. Anyone have any ideas? Thanks, Steve Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255723
  - 13
    - explicit member template function specialization Hi, I have a problem with a template function inside a class (no template). The template parameter of the class is a policy class. But the explicit specialization of the template function does not work. Visual C++ 7.1 compiler said that the function cannot be explicitly specialized. But the same code compiles with the Comeau online compiler successfully. Here's a simplyfied version of the code (with same effect Comeau -> ok, VC++ 7.1 -> error): class Policy1 { public: typedef int type; }; class Policy2 { public: typedef long type; }; class ClassX { public: template<typename PolicyT> bool func(typename PolicyT::type arg); }; template<> bool ClassX::func<Policy1>(Policy1::type arg) { /* do something */ return true; } template<> bool ClassX::func<Policy2>(Policy2::type arg) { /* do something */ return true; } int main() { ClassX x; x.func<Policy1>(12); } Can anyone tell me, why this does not work (with VC++7.1)? Thx in advance, Georg Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255719
  - 14
    - add file explorer to form Hi I am trying to add a panel to my windows form, and in it have basically a windows explorer control, which will allow users to navigate to a file that they want to use for input. I am able to add an openFileDialog but I cannot find how to make the explorer a permanent part of the form. thanks Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255713
  - 15
    - Question abt VTable?? Hi, Where VTable stores? VTable creating in the run time means, before constructor or after constructor??? Thanks in advance. Regards, -- DKDS.Naidu. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255703
  - 16
    - to load a user's profile without logging in Hi everyone, Could anyone help me with the problem while unistallation. I want to delete entries from HKCU(HKUsers) corresponding to each and every user's account present on my local computer. Right now i am not able to load the ussers profile as i am using LoadUserProfile. The problem which i feel is that this function requires the token to a loggedon user(using LogonUser) , but i just want to load the profile without asking for the password. So is there any method of 1 ) Getting the user's account token without really asking for his password 2 ) Loading the users profile by any mechanism to make some changes to it without asking the user for the password. help on the above topic will be really appreciated. Thanks, Neo. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255698
  - 17
    - Property sheet behaviour OnApply In a tabbed dialogue, I make changes on various PropertySheets and press Apply. The standard recommendation at this stage seems to be to send the PropertySheet a PSM_CANCELTOCLOSE message, which (despite its name) disables the cancel button and turns the OK button into Close. This seems crazy. For if I now make any more changes in the PropertySheets, there is no going back. The "Close" button accepts them and the "Cancel" button is no longer available. A far more sensible behaviour (which is sort of suggested by the name of the message) would be to change the "Cancel" button into "Close" and leave the "OK" alone. Question: *is* this more sensible or am I missing something. Of course I can implement this behaviour with SetWindowText() on the Cancel button, but as there is no message to do it automatically, I am in danger of getting the English text "Close" on the button no matter what the language of the user. I can avoid this (I reckon) by the slightly devious method in the PropertySheet: CString sOk; CString sClose; CWnd *pWndOk = GetDlgItem( IDOK ); CWnd *pWndCancel = GetDlgItem( IDCANCEL ); if( pWndOk && pWndCancel ) { pWndOk->GetWindowText( sOk ); // Get "OK" text SendMessage(PSM_CANCELTOCLOSE); // "Ok" -> "Close" pWndOk->GetWindowText( sClose ); // Get "Close" text. pWndCancel->SetWindowText( sClose ); // "Cancel" -> "Close" pWndOk->SetWindowText( sOk ); // Reset "Ok" -> "Ok" pWndCancel->EnableWindow(TRUE); // Don't disable cancel. } but doing so makes me feel a little unclean, as I am sneakily bypassing what Mr Gates tells me to do. Someone please tell me it's ok! 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: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255697
  - 18
    - malloc() & page boundaries -- Difference between VC6 and VC7 CRT? I was wondering if anyone knew of any changes in the CRT that would cause malloc behavior to change between code built with VC6/VC7? We discovered a segfault bug in production code built with VC6 that was not crashing frequently at all. We fixed the bug, but in the meantime, our builds were in the process of being switched to VC7. In the VC7 built code, the same crash occurs much more frequently. This alarmed us, so we are investigating why VC7 behavior would differ so much from VC6. The nature of the bug is such that many small buffers (~16 bytes) are being malloc'd but the bug causes the code to read past the end of the buffer by 8 bytes. Straightforward, and this crashes whenever the address to the 17th byte lives on the next memory page which happens to not be allocated. The issue is in VC6 built code, this bug rarely occurs, almost as if the memory allocation never allocates that close to an invalid page, or never completely fills up an entire page. When the code is built in VC7, the crash occurs very, very frequently, as if the 16 bytes are being allocated at the end of the page prior to an invalid one. My question is if anything regarding malloc or the heap changed between VC6/VC7 that could be behind this. Do any of the compiler optimization flags affect malloc's ability to alloc up to the last available byte in a page? We have discovered the source of the bug in remote code and have fixed it, but we are questioning if it is safe to move to VC7 so quickly. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255690
  - 19
    - Implementing Log In C++, what is the correct syntax to implement the expression of "10 log e"? Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255687
  - 20
    - LINK flag equivalent to -Bsymbolic I have a "C" shared library that statically links openssl and a "C" application that uses it also statically links openssl. I want to keep the two instances separate. On solaris and linux the -Bsymbolic flag to the linker for the shared library serves this purpose. Could someone let me know what the equivalent linker flag in for microsoft LINK linker. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255686
  - 21
    - The Qsort I have the following: struct Books { string bookname; int bookid; }; ... Books Library[500]; Library is then filled by user, and ofcourse in not done in alphabetic order. So, what I want to do after inserting values into Library is sort it alphabetically by Library.bookname. How can I use the Visual C++ qsort built in to accomplish that. I have read the help file in visual for qsort but to tell you the truth I couldnt make much of it. I know that before calling the qsort, I have to first write a compare function. But really, more than that I dont know. Please Help Thanks in Advance Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255681
  - 22
    - inserting item into list view I have this code: <code> HWND hList = GetDlgItem(hDlg, IDC_LIST_CHARACTERS); LVCOLUMN column; // character column.mask = LVCF_TEXT|LVCF_WIDTH|LVCF_SUBITEM; column.pszText = "Character name"; column.cx = 200; column.iSubItem = 1; SendMessage(hList, LVM_INSERTCOLUMN, 0, (LPARAM)&column); // number of bones column.mask = LVCF_TEXT|LVCF_WIDTH|LVCF_SUBITEM; column.pszText = "Number of Bones"; column.cx = 90; column.iSubItem = 2; SendMessage(hList, LVM_INSERTCOLUMN, 0, (LPARAM)&column); LVITEM item; item.mask = LVIF_TEXT|LVIF_; item.pszText = "This is a test"; item.iItem = 0; item.iSubItem = 1; SendMessage(hList, LVM_INSERTITEM, 0, (LPARAM)&item); item.mask = LVIF_TEXT; item.pszText = "asdasdasdasd"; item.iItem = 1; item.iSubItem = 2; SendMessage(hList, LVM_INSERTITEM, 0, (LPARAM)&item); </code> When this finishes, there are no items listed in my list control. I have stepped through the code and everything looks fine except that the result from LVM_INSERTITEM is -1; This is weird, I can insert the columns, what would be wrong with the item? Anyone see a problem with this? Thanks for reading, Steve Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255672
  - 23
    - Question on Crypto API Hi, Using the Crypto API, we wrote a progam to store our company generated certificates and associated private and public key pair under the store location CERT_SYSTEM_STORE_CURRENT_USER and under the store name MY. When we access the SSL sites via IE, we noticed that our comapny certificates shows up on the Client authentication dialog box. Is there any way to set our certificates so that our company certificates does NOT get displayed on the Client authentication dialog box?. Thank you Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255669
  - 24
    - String Manipulations Can anyone provide information for how to retrieve the actual character string from a CString object? I am using the following code but it only returns the address of the string and not the literal characters of the string. I know it has to be something simple that I am overlooking but I have copied samples from MS that are supposed to work but give the same results CString strSports("Hockey is Best!"); TCHAR sz[1024]; lstrcpy(sz, strSports); cout << strSports ; If I follow documentation provided by Microsoft which states: // while this line will put the content of the string out: cout << (LPCTSTR) strSports; I still only receive the address of the CString object at the console. Please help! Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255664
  - 25
    - Will the following code assert: // headers... int main () { double d = 0; ASSERT (d == 0); } ? Or is it machine/[HW/SW]floating-point processing dependent? Might 1.0E-1024 be a convenient way to store zero on some machines? Is there any certainty with doubles of floats or do we 100% of the time have to call fabs with some precision spec? Thanks in advance, - Alan Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255661
- Next
  - 1
    - Dynamic allocation of 2D character array? I am trying to set up a 2D array of characters using 'new'. The following looks OK to me but is not accepted by the compiler: char *2d_array ; 2d_array = new char[10][100] ; Can anyone tell me the correct way to do this? Also, please tell me the correct syntax for deallocating the memory when it is no longer required. With thanks, Gerry Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255653
  - 2
    - about runtime lib hi, all, just curious, microsoft provides these six libs: 1) MT/d multi-thread, static link release and debug 2) MD/d multi-thread, dynamic link release and debug 2) ML/d single-thread, static link release and debug why isn't the single thread dynamic lib be provided? thanks Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255644
  - 3
    - Qsort not working I'm using qsort to sort an array of Doubles. However, it is not working. Does anyone know why? // Here is the compare function. int classA::compareValueByAscendOrder(const void* arg1, const void* arg2) { double* value_1 = (double*)arg1; double* value_2 = (double*)arg2; double delta_value = value_1 - value_2; if( delta_value < 0 ) { return -1; } else { if( delta_value > 0 ) { return 1; } else { return 0; } } } // Here is the calling function CArray<double, double> temp_array; temp_array.Add( 5 ); temp_array.Add( 3 ); temp_array.Add( 4 ); temp_array.Add( 2 ); qsort( temp_array.GetData(), temp_array.GetSize(), sizeof(double), compareValueByAscendOrder ); // After qsort, the array is not sorted. ===================== 5 3 4 2 after qsort 5 3 4 2 ===================== Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255643
  - 4
    - How will it new/allocate memory on windows2003 when a class have string-type members? HI,all I have a class named CCC which have some members of std::string type. I declare a class pointer like this: CCC* ccc = new CCC( xml_input ); then I send the ccc to another module within the process with msg_queue. then this lead to a error on windows 2003 platform, but it's works well on Redhat Linux 9.0. In addition, I find out the same binary execute file could work well on windows XP, but It faild on my windows 2003. I debug it, and It's assert when the object pointer ccc is released. what's the reason??? the error info on windows as follows: =============================================================== --------------------------- Microsoft Visual C++ Debug Library --------------------------- Debug Assertion Failed! Program: E:\works\server\debug\configer.exe File: dbgheap.c Line: 1132 Expression: _CrtIsValidHeapPointer(pUserData) For information on how your program can cause an assertion failure, see the Visual C++ documentation on asserts. (Press Retry to debug the application) =============================================================== Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255642
  - 5
    - systematic debugging of random freeze in debug mode My code contains a loop that has to perform calculations on data streamed from a circular buffer. The calculation has to be performed 50,000+ times (about 30 ms per cycle) spitting out a number after each cycle. The thing freezes in a poissonic manner (i.e. sometimes after 10 seconds of data aquizition, sometimes after 10 min of data aquizition, etc). I do have the debugger attached. The program just stops responding and I only can terminate it by "Debug->Stop debugging". There are no indiciations in the Debug output window which would warn me of the onset of the freeze. Since the freeze happens randomly, and I don't see any feedback in the debugger, I am puzzled how I can systematically debug this thing. Can anyone give a spepific advice on where I could start? Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255621
  - 6
    - visual c++ / write to cout in binary mode? Visual C++: How can I write to std::cout in binary mode? Helmut Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255614
  - 7
    - Preprocessor (cl -E) limits ? (Error C2018 ) Does anyone know why certain characters are permitted in a 8-bit source file when using cl -E and not others ? Example 1: ---------- #define Foo() Holà, Mundo! Foo() cl -E -P foo.c cat foo.i #line 1 "foo.c" Holà, Mundo! Example 2: ---------- #define ThreeQuarters() This is a ¾! ThreeQuarters() cl -E -P foo.c foo.c(2) : error C2018: unknown character '0xbe' This is not an UTF-8 limit problem ("Holà, Mundo!" is definitely NOT a valid UTF-8 sequence), so where's the problem? (note: yes, this is not a valid C source, but I'm just using the preprocessor) Version: Microsoft (R) 32-bit C/C++ Optimizing Compiler Version 13.10.3077 for 80x86 Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255607
  - 8
    - How do I disp. "Local Area Connection Status" dialog programmatica Hi, I have to display "Local Area Connection Status" dialog through Win32 application. Manually, double click on "Local Area Connection" tray icon in the tray or START -> SETTINGS ->NETWORK CONNECTIONS ->Local Area Connection. I have tested with WINSPY.EXE tool, the class name of this window is #32770. So,I confirmed it's dialog box. How do I display this window/dialog box????? Thanks in advance. Regards, -- DKDS.Naidu. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255601
  - 9
    - Ho to print increasing count in one line on command prompt Hi All, I have developed one Win32 Console Application. This application updates records in CSV file according to requirement. I want when user run this application through command prompt, he can see increasing number of modified records on screen during execution of application. That is user can see increasing count of modified records during execution in same line. Same as we see increasing percentage during format command. How can I achieve this? Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255599
  - 10
    - RegQueryValueEx(...) This is a multi-part message in MIME format. ------=_NextPart_000_000B_01C5EE2C.2C3AF440 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I am writing an NT service (Win32 Console App) to act as a scheduler. It = will launch another application at a determined time. I am storing the = name of the app and some parameters on when it is to be launched in the = registry. =20 I can retrieve registry entries that are stored as a DWORD with no = problem. The problem is when I try to read a string REG_SZ. The = following code just hangs when running as a service.=20 Note that if I run the same exact code below in an MFC app or a Win32 = Console App not as a service it retrieves the string with no problem. = The non-service console app and the service console app have the exact = same project settings and include files. BOOL GetRegyString(LPCTSTR pszKeyNm, LPCTSTR pszvalNm, LPTSTR = lpbyDataBuf, int nBufSize) { DWORD dwValType =3D REG_SZ; BOOL bSuccess =3D TRUE; HKEY hKey; if (OpenRegyKey(pszKeyNm, &hKey)) { strcpy(lpbyDataBuf,_T("Failed To Retrieve String From Registry")); if (RegQueryValueEx(hKey, pszvalNm, NULL, &dwValType, (LPBYTE) lpbyDataBuf, (LPDWORD) &nBufSize) =3D=3D ERROR_SUCCESS) { RegCloseKey(hKey); return bSuccess; } RegCloseKey(hKey); } return !bSuccess; } The Win32 Console App service code will run, but fail to get the string, = if I declare and set the following: DWORD dwBufSize; dwBufSize =3D sizeof(nBufsize); but will still hang with the following DWORD dwBufSize; dwBufSize =3D nBufsize; Not sure what is going on here. Thanks, Dave ------=_NextPart_000_000B_01C5EE2C.2C3AF440 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Diso-8859-1"> <META content=3D"MSHTML 6.00.2900.2769" name=3DGENERATOR> <STYLE></STYLE> </HEAD> <BODY bgColor=3D#ffffff> <DIV><FONT size=3D2>I am writing an NT service (Win32 Console App) to = act as a=20 scheduler. It will launch another application at a = determined=20 time.  I am storing the name of the app and some parameters on when = it is=20 to be launched in the registry.  </FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>I can retrieve registry entries that are stored as a = DWORD  with no problem.  The problem is when I try to read a = string=20 REG_SZ.  The following code just hangs when running as a=20 service. </FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>Note that if I run the same exact code below in = an MFC=20 app or a Win32 Console App not as a service it retrieves the string with = no=20 problem.  The non-service console app and the service console app = have the=20 exact same project settings and include files.</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>BOOL GetRegyString(LPCTSTR pszKeyNm, LPCTSTR = pszvalNm, LPTSTR=20 lpbyDataBuf, int nBufSize)<BR>{<BR> DWORD dwValType =3D = REG_SZ;<BR> BOOL=20 bSuccess =3D TRUE;<BR> HKEY hKey;</FONT></DIV> <DIV> </DIV> <DIV><FONT size=3D2> if (OpenRegyKey(pszKeyNm,=20 &hKey))<BR> {<BR>  strcpy(lpbyDataBuf,_T("Failed To = Retrieve=20 String From Registry"));</FONT></DIV> <DIV> </DIV> <DIV><FONT size=3D2>  if=20 (RegQueryValueEx(hKey,<BR>       pszva= lNm,<BR>       NULL,<BR>  &n= bsp;    &dwValType,<BR>    &n= bsp;  (LPBYTE)=20 lpbyDataBuf,<BR>       (LPDWORD)=20 &nBufSize) =3D=3D ERROR_SUCCESS)</FONT></DIV> <DIV> </DIV> <DIV><FONT=20 size=3D2>  {<BR>   RegCloseKey(hKey);<BR> &= nbsp; return=20 bSuccess;<BR>  }</FONT></DIV> <DIV> </DIV> <DIV><FONT = size=3D2>  RegCloseKey(hKey);<BR> }<BR> return=20 !bSuccess;<BR>}</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>The Win32 Console App service code will run, but = fail to get=20 the string, if I declare and set the following:</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>DWORD dwBufSize;</FONT></DIV> <DIV><FONT size=3D2>dwBufSize =3D sizeof(nBufsize);</FONT></DIV> <DIV><FONT size=3D2></FONT> </DIV> <DIV><FONT size=3D2>but will still hang with the following</DIV> <DIV><BR> <DIV><FONT size=3D2>DWORD dwBufSize;</FONT></DIV> <DIV><FONT size=3D2>dwBufSize =3D nBufsize;</FONT></DIV> <DIV> </DIV> <DIV>Not sure what is going on here.</DIV> <DIV> </DIV> <DIV>Thanks,</DIV> <DIV> </DIV> <DIV>Dave</DIV> <DIV> </DIV> <DIV> </DIV></DIV></FONT></BODY></HTML> ------=_NextPart_000_000B_01C5EE2C.2C3AF440-- Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255589
  - 11
    - WM_CLOSE hi i wrote a small program that runs a timer to look for windows of a specific class. The window belongs to another program. When the window exists i need to kill it. I know i cant use WM_DESTROY because its another thread. So i tried WM_CLOSE but the other program crashes. The window i send a WM_CLOSE to is a popup , not the main window of the other application. Am i supposed to do something extra , like another message or something ? thanks Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255586
  - 12
    - Warning? Hello, I am trying one of my very first windows program and I am getting the following warning: c:\DATASOURCE_EXTRA\Programming\VC++CodeTesting_WINDOWS\TESTING_CPZ\HangTheMan_ProgTest1\HTM.C(51) : warning C4244: 'return' : conversion from 'WPARAM' to 'int', possible loss of data Here is my code: #include <windows.h> #include "HTM.h" LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM); const int NUMLINES = (sizeof Words) / (sizeof Words[0]); //My functions void DrawOptions(HDC,HWND,BOOL,BOOL,int); int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInnstance, PSTR szCmdLine, int iCmdShow) { static TCHAR szAppName[] = TEXT ("HTM"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style = CS_HREDRAW |CS_VREDRAW; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0; wndclass.cbWndExtra = 0; wndclass.hInstance = hInstance; wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION); wndclass.hCursor = LoadCursor (NULL, IDC_ARROW); wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH); wndclass.lpszMenuName = NULL; wndclass.lpszClassName = szAppName; if (!RegisterClass (&wndclass)) { MessageBox (NULL, TEXT ("xxx"),szAppName, MB_ICONERROR); return 0; } hwnd = CreateWindow (szAppName, TEXT ("HTM ! "), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, NULL, NULL, hInstance, NULL); ShowWindow(hwnd, iCmdShow); UpdateWindow (hwnd); while (GetMessage (&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam; } LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { static int cxChar, cxCaps, cyChar, cxClient, cyClient; HDC hdc; static int i; PAINTSTRUCT ps; TCHAR szBuffer[10]; TEXTMETRIC tm; static int ColorTYPE = 1; switch (message) { case WM_CREATE: hdc = GetDC (hwnd); GetTextMetrics (hdc, &tm); cxChar = tm.tmAveCharWidth; cxCaps = (tm.tmPitchAndFamily & 1 ? 3 : 2) * cxChar / 2; cyChar = tm.tmHeight + tm.tmExternalLeading; ReleaseDC (hwnd, hdc); return 0; case WM_SIZE: cxClient = LOWORD(lParam); cyClient = HIWORD(lParam); return 0; case WM_PAINT: hdc = BeginPaint (hwnd, &ps); //MESSAGE BOARD COLORS DrawOptions(hdc,hwnd,TRUE,TRUE,ColorTYPE); for (i = 0; i < NUMLINES; i++) { TextOut (hdc,0,cyChar * i,Words[i].szWord, lstrlen(Words[i].szWord)); TextOut (hdc,20 * cxChar,cyChar * i,szBuffer, wsprintf(szBuffer,TEXT("%2d"),Words[i].iWLenght)); } EndPaint (hwnd, &ps); return 0; case WM_DESTROY: PostQuitMessage (0); return 0; } return DefWindowProc (hwnd, message, wParam, lParam); } void DrawOptions(HDC hdc,HWND hwnd,BOOL b_OPAQUE, BOOL b_GRAYBRUSH,int i_ColorTYPE) { //Windows objects HBRUSH hBrush; //CHOICE OF OPAQUE OR TRANSPARENT if (b_OPAQUE == TRUE) {SetBkMode(hdc,OPAQUE); SetBkColor(hdc,0);} else {SetBkMode(hdc,TRANSPARENT); SetBkColor(hdc,22000);} //CHOICE OF COLOR TYPE if (i_ColorTYPE == 1) {SetTextColor(hdc,65535);} else if (i_ColorTYPE == 2) {SetTextColor(hdc,16777215);} else if (i_ColorTYPE == 3) {SetTextColor(hdc,9999);} //SELECT BRUSH COLOR if (b_GRAYBRUSH == TRUE) {hBrush = (HBRUSH) GetStockObject(GRAY_BRUSH);} else {hBrush = (HBRUSH) GetStockObject(WHITE_BRUSH);} //SELECT THE BRUSH INTO THE DEVICE CONTEXT SelectObject(hdc,hBrush); //DISPLAY RECTANGLE Rectangle(hdc,0,0,300,300); } I have seen this warning before, but now I don't know how to get rid of it ! Please help, anyone, Ross Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255575
  - 13
    - Does Prog. cause Defragmentation Hello, It has been approximately 4 months that I have been compiling C, C++ and VC++ programs as learning examples. I may have approximately 140 programs on my machine. However it is lately that my computer has a very difficult time defraging. I mean, I leave defrag on all night and in the morning it only accomplished say, 12%. Can this be due to all the VC++ compiling which is tremendously fragmenting my hard drive? All suggestions appreciated! Ross Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255570
  - 14
    - Some strange error Hi, I defined a POINT object but VS.NET 2002 doesn't recongnize it. #include <windows.h> : : POINT aPoint2; c:\Documents and Settings\luckie\MFCSimV7_1\CMyApp.cpp(63): error C2065: 'aPoint2' : undeclared identifier void CMyApp::Render2D() { RECT rect; POINT aPoint2; <-error C2065 rect.left = 0; rect.top = 0; rect.bottom = 480; rect.right = 640; aPoint2.x = 0; aPoint2.y = 0; HDC hTempDC = CreateCompatibleDC(0); CoyDCToSurface (m_pBackBuffer, &aPoint2, g_hGDIBitmapDC, g_hGDIBitmap, 0, -1); } Thanks Jack Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255567
  - 15
    - how to play two movies synchronously in one computer? (in direct x) Hi, I need to play two films on a PC,both of them to be played quite synchronously. I have two IMediaControl, each for a film and I do start them just one after the other. But there is a delay between the two. the delay is different, maybe 1 ms maybe 15 ms. Is there any solution for a better timing ? thanks, Behzad Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255565
  - 16
    - Preparing for 64 bit windows I'd like to canvass opinions on style. I am preparing assorted DLLs for 64 bit windows by switching on the flag which puts out warnings about type mismatches etc. Of course I am getting lots of them. Mostly from just a few sources - schematically: int n = strlen(....); int n = ptr1 - ptr2; int n = vector.size(); Now most of the arrays I am dealing with are highly unlikely to be bigger than 128 elements, and bigger than 2^31 elements is inconceivable. [Instructions on music like "Andante", "Allegro", just do not run to tens of thousands of characters each!] But I like my code to compile without warnings. So I have a choice of two ways to go: 1. Use the "proper" types. size_t n = strlen(); INT_PTR n = ptr1 - ptr2; etc. This populates my code with variables of type "size_t", "INT_PTR", "UINT_PTR" and so forth and so on. What was a simple bit of integer arithmetic starts to look very ugly on the page, and is far less readable. 2. Put in explicit casts int n = (int)strlen(....); int n = int(ptr1 - ptr2); etc. Now I don't like all sorts of unnecessary casts around either (even though I am happy in general that avoiding compiler warnings when "downsizing an integer type" is a perfectly good reason for them). Either way the code starts to look a lot messier. Any views on which is better? Alternatives? 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: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255563
  - 17
    - Refresh the system tray I have created an application to end a specific program at a specific time each day. The application I am ending is not mine and I cannot modify it. When it starts, it is minimized to the system tray. When my application ends it, the icon is still in the system tray until the mouse pointer is pointed on the system tray. I have tried to investigate the Shell_NotifyIcon function, but since the application is not mine, I do not know the taskbar ID of the application. This seems to be a required piece of information for the function. Is there any other way to do a general refresh of the system tray (similar to what happens when the mouse pointer is on the system tray) programatically? Any help is appreciated. Thanks, AJ Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255556
  - 18
    - rebuilding dependent dlls - proper dependency? Hi, we have a complicated mesh of dependent dlls. Whenever we change anything in A.dll's objects, everything that links against its import lib A.lib gets rebuilt. This takes ages, and it seems very inefficient. Obviously, when changing any exported signature / symbol in any of A.dll's objects (read: a header change), we'll have to rebuild everything that depends on A.dll. But what if we only change the source? Is there a smarter way to decide when re-building the dependent dlls is necessary, than just the time stamp of A.lib? Is it sufficient to check for the time stamp of the objects' headers? Thanks for insight / ideas! Cheers, Axel. NB: I have the feeling "vc.language" is not the proper group - but I cannot think of a better one... Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255553
  - 19
    - 'bool' : undeclared identifier What do I need to do to make my VC 6.0 recognize bool? Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255550
  - 20
    - Weird First-chance exceptions and ODBC Hi all, I'm getting some very weird first-chance exceptions when I use the ODBC functions in my C program. It goes like this. void a(...) { // do some ODBC stuff: connect, run some queries, disconnect b(...) } The problem occurs when I call b. Immediately as its called, in the disassembly window the instruction is a push ebp, a first-chance exception is generated (of type 0xC0000005) saying that an instruction was failing to read address 0xfffffff4. As well an assertion is generated saying _CrtIsValidHeapPointer was invalid. Since i'm only calling a function and only a push ebp was performed how the heck does the program a. generate an exception and b. call _CrtIsValidHeapPointer ??? These types of things seem to occur exclusively to me when we try and use the ODBC functions. If we take those out these exceptions are not generated. Has anyone else experienced this or know a solution??? Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255548
  - 21
    - VC 6.0 and ClearCase We encounter a very bad performance when using VisualStudio together with the ClearCase version control system. VS permanently seems trying to synchronize or so. Especially the VC debugger is a pain. This problem doesn't occure when using WinDbg. Is there a setting in VS? Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255543
  - 22
    - Class and instances (Stack overflow) No. of class instances too big, x5000xmany bytes each stack overflows and crashes How do I create class instance on the heap? Thanks Jack Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255539
  - 23
    - Reboot a PC witch VC code Hi there, how i can write a c or c++ source to reboot a win 98 pc. I found this but doesn't work. Thanks. #define MAGIC 0 /* for cold restart */ /* #define MAGIC 0x1234 /* for warm restart */ #define BOOT_SEG 0xffffL #define BOOT_OFF 0x0000L #define BOOT_ADR ((BOOT_SEG << 16) | BOOT_OFF) #define DOS_SEG 0x0040L #define RESET_FLAG 0x0072L #define RESET_ADR ((DOS_SEG << 16) | RESET_FLAG) main() { void ((far *fp)()) = (void (far *)()) BOOT_ADR; *(int far *)RESET_ADR = MAGIC; (*fp)(); } Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255537
  - 24
    - Register for .NET Event in MFC C++ (How?) Folks, I have a C# .NET Assembly that is called from an MFC C++ application. The assembly is marked as COM visible so I'm accessing the assembly from MFC C++ via COM. Everything works great but here is my question: I need to create an event in the .NET Assembly and have the MFC C++ application register for this event and handle the event. Can anyone provide an example or a link for doing this? Any help would be appreciated. Thanks in advance, -- Anthony Yott Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255530
  - 25
    - Enumerating SQL Server database tables rows and sprocs using MFC Hi, I've been looking around for a while now after an efficient way to enumerate tables, rows and sprocs of a MsSQL database. The best I could come up with was SQL DMO, but one cannot have it installed without installing SQL Server itself or MSDE, so I'm looking for alternative. After a table name was fetched, I will need to know the rows it contains, what type they are, and what are the indexes and identity defined for this table. Effectively, if I could somehow get the CREATE SQL statement from the DB itself that would be ideal. Also, I will need a way to get the sprocs code from the DB, and all that without having any prequisites on either sides - client and server. I'm using VC++ with MFC. No managed C++ or .NET, unless I can use the algorythm in an unmanaged enviroment. Any links, articles, replies and sample code would be highly appreciated. Thanks in advance, Stilgar. Tag: ActiveX controls in MFC DLLs Dialog (solution worth mensioning) Tag: 255519

Hi NewBies,

I had a crash in winocc.cpp line 301 when trying to add DLL to a
MFC ATL dialog and call from a CView App. After 100 trials my friend
poped me a suggestion worth a ton of Gold !

To prevent crash in DLL when hosting an activex contrl inside a MFC DLL
dialog

Ensure the following

In InitInstance of the DLL App class
Have AfxEnableControlContainer() as the first line;

In your calling applications view invoke the DLL as
CoInitializeEx(NULL, COINIT_MULTITHREADED);

I had it working but any ideas of why it is working ? Experts please
help !

Thanks
Deepak

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