printf with format

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  - 1
    - handling text files Hello, In Microsoft Visual C++ 6.0 : (Console Application). I want to read and write from/to text file. How can I do that ? Need sample code please. Thanks :) Tag: printf with format Tag: 246727
  - 2
    - Binary Compatibility Question We have an application that was written using VS6. It uses a number of DLL type extensions and we need to write a new extension. We no longer support VS 6 in our development lab and would like to know if a DLL (written in "C") and built in VS.NET 2003 will be compatible with the VS application. Thanks, Sid. -- Sid Price's Software Tools. http://www.Softtools.com Tag: printf with format Tag: 246704
  - 3
    - dynamic_cast is shite! dynamic_cast doesn't return the correct values: e.g. in my project I have a lot of classes, say A, B, C, D - D being the most derived, A being base - if I put printf(this) in the constructors of them they all get different values, e.g. A will be 0x12fec0, B will be 0x12fec4, C will be 0x12fec8, D will be 0x12fecc, ..etc. I thought this was supposed to happen, but if I have an A* called "pa" (knowing myself that it is also a D*) if I do void test(A* pa) { D* pd = dynamic_cast<D*>(pa); // then d ends up as 0x12fec0, NOT 0x12fecc as I was hoping! } I tried to build a test project to demonstrate but in that all the constructors printed the same values! Help! And yes I have got multiple inheritance, I have also got virtual inheritance. Tag: printf with format Tag: 246698
  - 4
    - GetFileVersionInfo() I am trying to get various information about the version of a file in order to determine that it is the correct file. I have one working implementation, but I also need to generalize the code a bit in order to use it in a related project. The generalized code works exactly the same way as the non-generalized code with a couple exceptions, but I am running into an error with the GetFileVersionInfo(). Here's a sample: INT Validate(std::string _file, lpData _info) { LPVOID Data; DWORD dwLength; DWORD dwEmpty; dwLength = GetFileVersionInfoSize(_file.c_str(),&dwEmpty); if (!dwLength) return -1; Data = (LPVOID) malloc(dwLength+1); if (!Data) return -2; memset(Data,0,dwLength+1); if (!GetFileVersionInfo(_file.c_str(),NULL,dwLength,&Data)) { free(Data); return -3; } ... } The lpData is a structure containing the information I want to verify about the file. My problem is that the pointer is no longer valid after I call the GetFileVersionInfo(). I checked at run-time by watching the pointers - the 'Data' and '_info' pointers are valid before I call it, but then when it returns (it does not go into the body of the if-block), the values are invalid and cause a crash. E.g. the following: Before After Valid Invalid _info = 0x0012f2b4 --> 0x00050000 Data = 0x00fd7be0 --> 0x0034037c As I said before, I have another version that works just fine. Am I doing something wrong? I pretty much copy-pasted the code. TIA, Tag: printf with format Tag: 246694
  - 5
    - Reading the system time Hi, Is there a way to read the time so that: 1. If the PC is connected to the Windows Server (NT/2000 or 2003) then read the server time. 2. If the PC is a thin client and connected to the server through the Citrix Server then read the server time. 3. If the PC is NOT connected to the Windows Server (NT/2000 or 2003) then read the local time. Thanks. Regards, Sandford Tag: printf with format Tag: 246677
  - 6
    - Linking error when using multiple forms and #include<afxinet.h> Hello! I am developping a Visual C++ .NET multiple forms application, which uses FTP connection. When I use more than one form, and include the <afxinet.h> library (necessary for FTP connection), the linker errors occur: error LNK2005: "void * __cdecl operator new(unsigned int)"(??2@YAPAXI@Z) already defined in LIBCMTD.lib(new.obj) error LNK2005: "void __cdecl operator delete(void *)" (??3@YAXPAX@Z) already defined in LIBCMTD.lib(dbgdel.obj) fatal error LNK1169: one or more multiply defined symbols found In order to be clearer, I'll tell the simple steps to create the error: I create a Windows Form C++ .NET application; add a new form (add element->new form); simply include the <afxinet.h> in the Form1. Ok, if you try to run the application, it will. Now, just close the Visual Studio, open everything again, do a NEW compilation, and try to run. (!!!) That's the error! That's why I think it could be a bug of the Visual Studio... Thus, I can just work with FTP connection and only ONE form. We tried the MSDN help, that tells to ignore the library (LIBCMTD.lib), but this causes other link errors. We tried everything we could. If somebody could help me anyway I thank very much. Tag: printf with format Tag: 246674
  - 7
    - unused template class methods Hi to all, when trying to compile the code below, VC7.1 does it, even if GetSomeSpecialWin32TickCount is unknown. However both GCC and Comeau (in strict mode) give an error. What about compiling unused parst of template classes? We assumed compilers NOT to look inside member function bodies (and in fact VC7.1 does not even detect missing ;) #include <ctime> struct win32 {}; struct other {}; typedef other os_type; template <typename timetraits_t, typename timer_t = typename timetraits_t::value_type> class basic_timer { timer_t start_; timer_t stop_; inline static timer_t now() { return timetraits_t::get_time(os_type()); } public: typedef timer_t value_type; basic_timer() : start_(0) { } value_type start() { return start_ = now(); } value_type stop() { return (stop_ = now())-start_; } }; ////////////////////////////////////////////////////////////////////////// template <typename platform_t> struct clock_traits { typedef size_t value_type; template <typename any_t> inline static value_type get_time(any_t) { time_t t; return std::time(&t); } inline static value_type get_time(win32) { return GetSomeSpecialWin32TickCount(); } }; typedef basic_timer< clock_traits< os_type > > timer_chrono; ////////////////////////////////////////////////////////////////////////// int main() { timer_chrono t; t.start(); t.stop(); return 0; } Tag: printf with format Tag: 246663
  - 8
    - Need help in Including/converting C files in C++ project Hello, I've a few C files in hand containing functions that can be used to convert a string into MD5 hash string. When I tried to include the c sources and header files to the project, a lot of errors and warnings comes out. The c files can be compiled and run successfully when placed in a standalone project. (with "Project Properties"->"Advanced"->"Compile to" set to "C executables" of course, and compile option "-DMD=5" to specify the MD marco) So I think the sources are Okay. Would anyone please give me a pointer on how to "include the files in C++ project"/"convert these C files to C++ sources"? A second question is: If I included the files, would it be right to just specify the "-DMD=5" in the project properties, or I should specify it elsewhere? Thanks a lot. Regards, Lau Lei Cheong -- If you want to mail to me, please replace all instance of "e" to "a" in my email address. Thank you. Sorry for any inconvience caused, but there's many spam-mailers. Tag: printf with format Tag: 246653
  - 9
    - switching stdout to a file /* The MSDN Library 10/2001 gives this example for the use of dup()/dup2() to make "stdout" refer to a program-determined file and then restores it NOTE: All error checking deleted for "clarity" Also, the type and arguments of main are not proper either (that's the way it was there) */ #include <io.h> #include <stdlib.h> #include <stdio.h> void main( void ) { int old; FILE *new; old = _dup( 1 ); /* "old" now refers to "stdout" */ /* Note: file handle 1 == "stdout" */ new = fopen( "data", "w" ); /* stdout now refers to file "data" */ _dup2( _fileno( new ), 1 ); puts( "This goes to file 'data'\r\n" ); fclose( new ); /* Restore original stdout */ _dup2( old, 1 ); } /* BUT I'd like to know what's wrong with using this method instead */ void main(void) { FILE *savestdout = stdout; stdout = fopen( "data" , "w" ); ... fclose( stdout ); stdout = savestdout; } TIA Norm Tag: printf with format Tag: 246649
  - 10
    - MIDI question When I play a MIDI file with Windowsmedia player, and at the same time record on "stereomixer" with Audio Recorder, it records the audio of the midi to wav. When I then play the wav it sounds significatly worse than the original Midi. Any ideas why? It might be a problem of my sound card. thanks Tag: printf with format Tag: 246645
  - 11
    - EARN $$$ SEARCHING THE NET IN GOOGLE(READ BODY) You want to gain much money? So do I!join with me then! That is thus,there is sites that pay for each research in google. This consists of making 40 research per $0,80 day and receiving cent. Or either, to the end of the month they make 25. If to join a friend, and if it to make the 40 research per day and the 25$ to the end of the month. Raisins to gain 50$ (25$ yours and 25$ of your friend). 1º - They have to arrange a paypal account, that is gratuitous, for where the owners of the sites order the money day 14 of each month. For this they visit http://www.paypal.com, sign up, personal account, are enrolled and they do not need for your credit card, becouse having account then gives to make the transference to your account (when to appear, this cancel and thats it ') I currently use 2 sites, I go to leave the sites here but they make the max to obtain $. After confirming the account in the paypal here, they are register: - http://netbux.org/?r=68890 (opens the site, and in low it has to register, are register and such, in the paypal email, put the mail that you have registered before in www.paypal.com. After making signup, go to have one link similar to the from above one but to different numbers. They use this link to make the research. They can control the $ has accumulated in low in button "Stats".) - http://pay-pup.com/?r=36073 (Same procedures from above) LETS GO TO MAKE SOME $$$! Follow these easy steps: 1) Sign up and register here:http://netbux.org/?r=68890 2) Login and begin searching on Google or your prefered search engine! 3) Do this everyday and tell your friends to make even more money! Do the same steps for pay-pup http://pay-pup.com/?r=36073 Note: Netbux works same way put you can earn 80 cents a day insted of $1.00 How Pay-Pup Works At Pay-Pup, we pay our members to search the internet. There are no strings or gimmicks. You simply register with Pay-Pup and you earn money instantly from your very first search. You will earn $0.02 for every search you make for up to 50 paid searches per day, therefore the maximum pay per day for your individual searching is $1.00. Note: A paid search is one that is unique to your other searches, meaning that you will not get paid for searching the same thing twice. To make things even better, you will also earn $0.02 for every search that your referrals make for up to 50 searches a day as well! Therefore the maximum pay per day for each referral is $1.00. The more referrals, the more money! Upon registration, you will be given a unique referral url (also located in your 'stats' area) that you can give out to your friends, post it on your website, blog, etc. We also have some images that you can use to help advertise online with. An amazing feature with the referral program is that if someone comes here by way of your referral url, their ip address is recorded and attached to your account so if they close the browser, disconnect (only static ip's), turn off their computer (only static ip's), you will still get credit if they ever return! You only get paid for one level of referrals but you may already see an enormous earning opportunity here. There really isn't much to it. You search the net and you earn money. You refer your friends and you'll earn even more money. Your member statistics are updated instantly so you can always stay on top of your earned monies, referrals, searches, etc. We pay you at the beginning of every month via PayPal once you have reached $50 or more. Tag: printf with format Tag: 246634
  - 12
    - EARN $$$ SEARCHING THE NET IN GOOGLE(READ BODY) You want to gain much money? So do I!join with me then! That is thus,there is sites that pay for each research in google. This consists of making 40 research per $0,80 day and receiving cent. Or either, to the end of the month they make 25. If to join a friend, and if it to make the 40 research per day and the 25$ to the end of the month. Raisins to gain 50$ (25$ yours and 25$ of your friend). 1º - They have to arrange a paypal account, that is gratuitous, for where the owners of the sites order the money day 14 of each month. For this they visit http://www.paypal.com, sign up, personal account, are enrolled and they do not need for your credit card, becouse having account then gives to make the transference to your account (when to appear, this cancel and thats it ') I currently use 2 sites, I go to leave the sites here but they make the max to obtain $. After confirming the account in the paypal here, they are register: - http://netbux.org/?r=68890 (opens the site, and in low it has to register, are register and such, in the paypal email, put the mail that you have registered before in www.paypal.com. After making signup, go to have one link similar to the from above one but to different numbers. They use this link to make the research. They can control the $ has accumulated in low in button "Stats".) - http://pay-pup.com/?r=36073 (Same procedures from above) LETS GO TO MAKE SOME $$$! Follow these easy steps: 1) Sign up and register here:http://netbux.org/?r=68890 2) Login and begin searching on Google or your prefered search engine! 3) Do this everyday and tell your friends to make even more money! Do the same steps for pay-pup http://pay-pup.com/?r=36073 Note: Netbux works same way put you can earn 80 cents a day insted of $1.00 How Pay-Pup Works At Pay-Pup, we pay our members to search the internet. There are no strings or gimmicks. You simply register with Pay-Pup and you earn money instantly from your very first search. You will earn $0.02 for every search you make for up to 50 paid searches per day, therefore the maximum pay per day for your individual searching is $1.00. Note: A paid search is one that is unique to your other searches, meaning that you will not get paid for searching the same thing twice. To make things even better, you will also earn $0.02 for every search that your referrals make for up to 50 searches a day as well! Therefore the maximum pay per day for each referral is $1.00. The more referrals, the more money! Upon registration, you will be given a unique referral url (also located in your 'stats' area) that you can give out to your friends, post it on your website, blog, etc. We also have some images that you can use to help advertise online with. An amazing feature with the referral program is that if someone comes here by way of your referral url, their ip address is recorded and attached to your account so if they close the browser, disconnect (only static ip's), turn off their computer (only static ip's), you will still get credit if they ever return! You only get paid for one level of referrals but you may already see an enormous earning opportunity here. There really isn't much to it. You search the net and you earn money. You refer your friends and you'll earn even more money. Your member statistics are updated instantly so you can always stay on top of your earned monies, referrals, searches, etc. We pay you at the beginning of every month via PayPal once you have reached $50 or more. Tag: printf with format Tag: 246633
  - 13
    - EARN $$$ SEARCHING THE NET IN GOOGLE(READ BODY) You want to gain much money? So do I!join with me then! That is thus,there is sites that pay for each research in google. This consists of making 40 research per $0,80 day and receiving cent. Or either, to the end of the month they make 25. If to join a friend, and if it to make the 40 research per day and the 25$ to the end of the month. Raisins to gain 50$ (25$ yours and 25$ of your friend). 1º - They have to arrange a paypal account, that is gratuitous, for where the owners of the sites order the money day 14 of each month. For this they visit http://www.paypal.com, sign up, personal account, are enrolled and they do not need for your credit card, becouse having account then gives to make the transference to your account (when to appear, this cancel and thats it ') I currently use 2 sites, I go to leave the sites here but they make the max to obtain $. After confirming the account in the paypal here, they are register: - http://netbux.org/?r=68890 (opens the site, and in low it has to register, are register and such, in the paypal email, put the mail that you have registered before in www.paypal.com. After making signup, go to have one link similar to the from above one but to different numbers. They use this link to make the research. They can control the $ has accumulated in low in button "Stats".) - http://pay-pup.com/?r=36073 (Same procedures from above) LETS GO TO MAKE SOME $$$! Follow these easy steps: 1) Sign up and register here:http://netbux.org/?r=68890 2) Login and begin searching on Google or your prefered search engine! 3) Do this everyday and tell your friends to make even more money! Do the same steps for pay-pup http://pay-pup.com/?r=36073 Note: Netbux works same way put you can earn 80 cents a day insted of $1.00 How Pay-Pup Works At Pay-Pup, we pay our members to search the internet. There are no strings or gimmicks. You simply register with Pay-Pup and you earn money instantly from your very first search. You will earn $0.02 for every search you make for up to 50 paid searches per day, therefore the maximum pay per day for your individual searching is $1.00. Note: A paid search is one that is unique to your other searches, meaning that you will not get paid for searching the same thing twice. To make things even better, you will also earn $0.02 for every search that your referrals make for up to 50 searches a day as well! Therefore the maximum pay per day for each referral is $1.00. The more referrals, the more money! Upon registration, you will be given a unique referral url (also located in your 'stats' area) that you can give out to your friends, post it on your website, blog, etc. We also have some images that you can use to help advertise online with. An amazing feature with the referral program is that if someone comes here by way of your referral url, their ip address is recorded and attached to your account so if they close the browser, disconnect (only static ip's), turn off their computer (only static ip's), you will still get credit if they ever return! You only get paid for one level of referrals but you may already see an enormous earning opportunity here. There really isn't much to it. You search the net and you earn money. You refer your friends and you'll earn even more money. Your member statistics are updated instantly so you can always stay on top of your earned monies, referrals, searches, etc. We pay you at the beginning of every month via PayPal once you have reached $50 or more. Tag: printf with format Tag: 246632
  - 14
    - Please help me solve it. Hi, I try to use the CEdit::SetTabStops(), .... int nTabStop[]={100*4,20*4,2*4}; m_edit1.SetTabStops(3,nTabStop); m_edit1.SetWindowText("test01\ttest02\ttest03\ttest04"); ... it can't work at all. But CListBox::SetTabStops() works well. If you know how to use CEdit::SetTabStops(), please help me. Thanks in advance. Cui Sheng Tag: printf with format Tag: 246620
  - 15
    - To mark randall To Mark Randall::First of all thanks for replying . Well i wann to kno the virtual memory layout of the code. and about the assembly cod suppose i hav e a assembly code i wann to convert it into the exe file wann to know how t his can happen. As far as i know the the pointe addres that we mention in t he C++ program are the virtual address like suppose i say int i;int* i_ptr=&i;Here &i returns the virtua address of "i" in the code. But if u compile this program and get th ASM file you can see the registers . I dont think the assembly code i the ASM file specifies the virrtual addr ess. So perhaps for paging th ASM code is converted to EXE file. I am not s ure if this is wha happens. I want to know if it is true. And the stack is not like thi as you have mentioned. [Function 1 Vars] [Stack Pointer] [Func tion Vars] [Stack Pointer] [Function 3 Vars] [Stack Pointer] But as far as know it is like first the invironment varriables are pushed into th stack. then the global values and then the main and other functions Well main is replaced by other functions which are found in th crt0.cpp f ile. And the stack pointers you have mentioned, are the storing the virtual addr ess or the physical address? If my grammer i poor sorry - DeltaOn ----------------------------------------------------------------------- Posted via http://www.codecomments.co ----------------------------------------------------------------------- Tag: printf with format Tag: 246612
  - 16
    - In memory layout of the C++ program To Mark Randall::First of all thanks for replying . Well i wann to kno the virtual memory layout of the code. and about the assembly cod suppose i have a assembly code i wann to convert it into the exe file wann to know how this can happen. As far as i know the the pointe addres that we mention in the C++ program are the virtual address. lik suppose i say int i;int* i_ptr=&i;Here &i returns the virtual address of "i" in th code. But if u compile this program and get the ASM file you can se the registers. I dont think the assembly code in the ASM file specifie the virrtual address. So perhaps for paging the ASM code is converted t EXE file. I am not sure if this is what happens. I want to know if it i true. And the stack is not like this as you have mentioned. [Function Vars] [Stack Pointer] [Function 2 Vars] [Stack Pointer] [Function Vars] [Stack Pointer] But as far as i know it is like first the invironment varriables ar pushed into the stack. then the global values and then the main an other functions. Well main is replaced by other functions which ar found in the crt0.cpp file. And the stack pointers you have mentioned, are they storing the virtua address or the physical address? If my grammer is poor sorry - DeltaOn ----------------------------------------------------------------------- Posted via http://www.codecomments.co ----------------------------------------------------------------------- Tag: printf with format Tag: 246611
  - 17
    - what is segment not defined ? Hi, I am using edgcc to compile some c++programs.. everything goes smooth... However when I try to compile programs with objects (any type maybe int,char* ,class,struct ect) defined OUTSIDE main, compilation error occurs... as test.int.c test.c(48) : warning C4068: unknown pragma test.c(49) : error C2341: '.CRT$XCU' : segment must be defined using #pragma dat a_seg or code_seg prior to use Kindly suggest what does it mean... test.c has code outside main as class X { public: int ix; X(int ii=0) : ix(ii) {} }; X ox; int X::*pmi = &X::ix; X *px = &ox; main(){...} Tag: printf with format Tag: 246603
  - 18
    - string to int Hi, All For String ( not char ) to int, which funtion I can call? for VB, str(), val () for java String.Tovalue(X) for VC ? Thank you vrey much. Best regards, Boki. Tag: printf with format Tag: 246598
  - 19
    - Can't get VS to convert a dynamic link library to static library. I have a 'C' project that is a Win32 DLL project that I am trying to convert to a static library. I removed the all instances of the DLL on my hard drive to make sure that I was linking with the new static library instead of running with the DLL. I am compiling this library VS.NET 2003. I have changed the VC compiler option under the General tab to Static Library. The project compiles find and builds the .LIB file as expected. No DLL file is generated either, which is also what is expected. I am able to link the .LIB file into my EXE with no errors. However, when I try to run the EXE, I get an error stating that the DLL file for the library that I built cannot be found. I don't understand why the LIB file is still trying to run as a DLL instead of a static library. I have checked and double checked for any errant files that may be linked in, and cannot figure out what is wrong. I have checked the DEF file for any LIBRARY directives. I even checked the RC file for any DLL file references. I can't see any reason why the thing is still behaving like a DLL. Can someone give me any advice on what to do here? -- ----------------------------------- Ken Varn Senior Software Engineer Diebold Inc. EmailID = varnk Domain = Diebold.com ----------------------------------- Tag: printf with format Tag: 246591
  - 20
    - Outlook CommandBar Hi there IS there a Control that comes with Windows or VC6 that i can use to reproduce the look of a "Scrollable Toolbar" ? In other words a Toolbar that is clipped if it exeeds a pre-defined size and scrolls with 2 buttons and the ends etc.. I thought of the Outlook CommandBar but i donc want to worry about what version of Outlook the user has and weather or not i can legaly recycle it etc... thanks. Tag: printf with format Tag: 246586
  - 21
    - Very bad crashes when debugging with Spy++ I have experienced a scenario whereby I experience very bad crashes, when using Spy++. When this crash occurs, not only one program crashes but the whole system hangs - even Ctrl+Alt+Del doesn't do anything. The only thing to do is press the motherboard reset switch. I experience it when debugging while also using Spy++. I tried to reproduce it using a blank "hello world" app rather than my own and it didn't do it, so it must be something about my app, but there are no other symptons of it so it seems strange that it should only affect Spy++, I wondered whether anyone else had seen it nonetheless? Also worthy of note is that this still occurs if my app has only ever had one main thread. Steps taken to reproduce the crash: 1) Start VS.NET, and run windows application under debugger by starting with F5. 2) Start Spy++, and spy on the application's window. 3) Close the application. (Closes without exception and returns to the IDE correctly) 4) Press F5 again (not necessarily having recompiled) to try to start the app again - and crash! The app never starts, the system is from that point on doomed, and will respond to absolutely nothing other than a hardware reset. It doesn't do it if I close down Spy++ between steps (3) and (4) - I can then start it up again and continue spying. My guess is that when spying (as in step (2)), Spy++ has acquired some kind of low-level hook to the application, and when it closed down, managed to get its claws into the IDE because it was its parent process and somehow this has blocked some very low-level function. Tag: printf with format Tag: 246577
  - 22
    - VC++ beginner question Hello, I am a beginner of C++. I read a book and try the following program using free VC++ 2003 Toolkit. The code compile successful by VC++ 5 but fail by VC++ 2003 toolkit. Why? Anyone can help me. Thanks in advance. Atsushi #include <iostream.h> #include <iomanip.h> //for setw() etc class airtime { private: int minutes; int hours; public: void set() { char dummy; cout<<"Enter time (format 23:59):"; cin>>hours>>dummy>>minutes; } void display() { cout<<hours<<":"<<setfill('0')<<setw(2)<<minutes; } int AirtimeToMins() { int imins=hours*60 + minutes; return imins; } }; //end class airtime void main() { airtime t1; int iminutes; char choice; do { cout<<"For t1, "; t1.set(); iminutes=t1.AirtimeToMins(); cout<<"Minutes="<<iminutes; cout<<"\nDo another (y/n)?"; cin>>choice; }while(choice != 'n'); } Tag: printf with format Tag: 246570
  - 23
    - Image Name in Task Manager Hi all, I have a C++ application, with a long name, sometimes I can see the full name in Task Manager when it is running, but some times the short name is displayed in Task Manager. Can some one explain or point to a document to explain this? TIA, JoeZ Tag: printf with format Tag: 246562
  - 24
    - hilite menu Hi! I have a popup menu in my aplicattion. There are several items with a bmp image. When these items are highlighted moving the cursor over them, the image appears ugly (the blue highlight bar over the image converts the colors to the opposite ones). Are there solutions to this problem? It's important to use only APIs and not MFC objects. May be an option to don't covert the image with the highlight? Thanks Jordi Tag: printf with format Tag: 246552
  - 25
    - how to permit only one instance of the program to run ? Hi, How to permit only one instance of a program to run at any time? I mean , the program 1st checks to see the program is already running and if another instance it is already running exists. best bn Tag: printf with format Tag: 246551
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  - 1
    - Hi HI, winbase.h 'sleep' function contradicts with signatur of 'sleep ' defined in my library. I have changed the signature of the function in my library header but not in library code .lib Will it work... Also is there any other way I can remove this linkage error ....maybe not including windows cpp library file which has this sleep function. Thanks,.. .cpp.a.a Tag: printf with format Tag: 246547
  - 2
    - #using not working ? Hi, I am using a simple statement of the form #using <mscorlib.dll> however the MS VC++ compiler complains... "fatal error C1021: invalid preprocessor command 'using'" Kindly suggest....what is the problem and how do i make it work... Thanks a.a.cpp Tag: printf with format Tag: 246541
  - 3
    - Manifest of repro Right now I am now confronting with the Internal Compiler Error bug of the VC++ 6.0 compiler :( How to repro every possible ways that Microsoft has announced in the kb? Is it a quick long list that I can read and type? In the kb, they said it could be 1) misuse of pragma (pack,?) 2) using "using namespace" recursively 3) compiling large prototype files 4) and a dozen of poss. And I've nearly touched all of the above.... :( Is it recommended to create a console application to repro every possibility to see what's gone wrong? My compiler VC++ 6.0, yes. pretty old with no SPs, Tag: printf with format Tag: 246539
  - 4
    - remove non empty direcory Hello, I would like to know the simplest way ro remove a non empty directory using VC++ 6.0. thnks François Tag: printf with format Tag: 246538
  - 5
    - Where can I write code for event in VC.Net windows application? I am quite new with VC.Net and am using it to a multi-form windows application. I found that only one or two events are able to be generated automatically in code view by double click on these controls. I can write code for these event function. But I don't know how to create other event functions in code view. So I have no place to write code to. Please tell me how to solve this problem, or where I can find some samples. Thank you in advance for your help. Tag: printf with format Tag: 246535
  - 6
    - DrawText with DT_CALCRECT I am getting unexpected values returned when I use DrawText(DT_CALCRECT) and have a SetWorldTransform(). Using a fixed piece of text I get differing text widths returned depending on the scale factor used. Sample code and output shown below. If anyone can enlighten me as to whats going on, or what I'm doing wrong, then that would be greatly appreciated. Thanks. char text[] = "January 2005"; float s = 0.9f; for(s = 0.9f; s< 1.6f; s += .1f) { XFORM xForm; xForm.eM11 = s; xForm.eM12 = 0; xForm.eM21 = 0; xForm.eM22 = s; xForm.eDx = 0; xForm.eDy = 0; SetGraphicsMode(hdc, GM_ADVANCED); SetWorldTransform(hdc, &xForm); int logpixelsy = GetDeviceCaps(hdc, LOGPIXELSY); LOGFONT lf; ZeroMemory(&lf, sizeof(LOGFONT)); lf.lfHeight = -(int)((logpixelsy * 30)/72); lf.lfWeight = FW_BOLD; intlStrcpy(lf.lfFaceName, TEXT("Arial")); lf.lfOutPrecision = OUT_DEFAULT_PRECIS; lf.lfClipPrecision = CLIP_DEFAULT_PRECIS; lf.lfQuality = PROOF_QUALITY; lf.lfPitchAndFamily = DEFAULT_PITCH; lf.lfCharSet = DEFAULT_CHARSET; HFONT hFont = CreateFontIndirect(&lf); HFONT hOld = (HFONT)SelectObject(hdc, hFont); RECT measure = {0,0,32767,32767}; DrawText(hdc, text, len, &measure, DT_CALCRECT); SelectObject(hdc, hOld); DeleteObject(hFont); char buff[100]; sprintf(buff, "scale=%g textwidth=%d, textheight=%d\n", s, measure.right, measure.bottom); OutputDebugString(buff); xForm.eM11 = 1; xForm.eM12 = 0; xForm.eM21 = 0; xForm.eM22 = 1; xForm.eDx = 0; xForm.eDy = 0; SetWorldTransform(hdc, &xForm); } scale=0.9 textwidth=253, textheight=48 scale=1 textwidth=249, textheight=46 scale=1.1 textwidth=250, textheight=46 scale=1.2 textwidth=255, textheight=47 scale=1.3 textwidth=254, textheight=47 scale=1.4 textwidth=253, textheight=46 scale=1.5 textwidth=251, textheight=47 Tag: printf with format Tag: 246534
  - 7
    - Array of class and a pointer to it Hello, I defined a class name MyClass. I would like to define an array of 4 by 8 of that class. I would like to define a pointer to the array of MyClass. I tried it with static definition: MyClass m_MyClass[4][8] ; I can not seem to find the way to define a pointer to this array?!?!? I tried also to define it with the new operator but had similar results. Any ideas how to do it? Eitan Tag: printf with format Tag: 246531
  - 8
    - Load a ICON in a Button hello i've having a bit of a problem with loading a Icon in a Button. Basicaly I got a Dialog resource with a button on it. And with the "property bag" of the button i set it to "Icon" Then I load the icon like so : ( i make sure the button is 16x16) HWND hbut2 = GetDlgItem(IDC_BUTTON2); ::SetWindowPos(hbut2, NULL, 0, 0, 16, 16, SWP_NOMOVE); HICON icon = LoadIcon(_Module.GetResourceInstance(), MAKEINTRESOURCE(IDI_ICON4)); ::SendMessage(hbut2, (UINT)BM_SETIMAGE, (WPARAM)IMAGE_ICON, (LPARAM)icon); Now for some reason, the button loads the Icon 32x32 =/ I made the icon myself and made sure the Icon is 16x16. So is it the LoadIcon API that loads the icon as 32x32 or is it the Button that cannot accept icons smaller then 32x32 ? ok thanks for you input =] Tag: printf with format Tag: 246528
  - 9
    - Spin Control hi I'm using a Spin Control on a dialog resource in VC6 . Im not using MFC. I there a documentation on how i can interface with that control even though im not using MFC ? thanks. Tag: printf with format Tag: 246525
  - 10
    - API export registry Hello, Is there an api to export a registry key to a .reg file just like you can do from regedit? Thank you. Tag: printf with format Tag: 246506
  - 11
    - issue with the new VC .NET #import for smart pointers OK. this is my second issue with the new VC .NET #import for smart pointers. for the following declaration in an ODL dispinterface IFoo { methods: [id(1)] IDispatch* GetFoo2(); } dispinterface IFoo2 { } I get in VC 6 these wrappers: _COM_SMARTPTR_TYPEDEF(IFoo, __uuidof(IDispatch)); _COM_SMARTPTR_TYPEDEF(IFoo2, __uuidof(IDispatch)); in VC 7 I get _COM_SMARTPTR_TYPEDEF(IFoo, __uuidof(IFoo)); _COM_SMARTPTR_TYPEDEF(IFoo2, __uuidof(IFoo2)); The problem is that I am having difficulting utilizing the generated wrappers because IFoo2 is not returned what is returned is IDispatch. I know I can access these without the wrappers but that just seems stupid. Probably I need to make a minor modifications on how I use the smart pointer but I am at a loss for what that would be. Any help or insight would be appreciated. - BAZ Tag: printf with format Tag: 246504
  - 12
    - C/C++ .net forms I am trying to build a C/C++ .net form that displays data received from a comm port. I have created a C/C++ .net form project, but I can't figure out where to place the C/C++ code that runs in an endless loop monitoring the comm port, recieving a data packet every 5 secs and updating the form. When the form is closed, I want to close the port handle. I have createdI have the code to manage the comm port. I've done something similar in a VB project with "form load". Tag: printf with format Tag: 246496
  - 13
    - How include animated GIF into CEdit ? I need put small animated gifs (like emoticons) into CEdit control in place of blinkinh caret. Thanks for help. Tag: printf with format Tag: 246492
  - 14
    - start off with port progarmming .... Hi, I am using the following code to start off with port progarmming .... int main() { int t; t=_inp(1); cout<<t; return 0; } but it gives 'Windows priviliged exception' Kindly suggest.... Thanks a.a.cpp Tag: printf with format Tag: 246490
  - 15
    - In memory layout of the C++ program Hi, I read the common object file format. But i am not pretty sure how machine language is converted to exe file. How can i generate the virtual address. I wann to know how the memory layout of a C++ program in done in memory i.e virtual memory and the physical memory also. With the VC++ compiler or some other compiler also i can get the assembly code for that program but how is this program converted to exe file and why is it converted as a assembly program is directly converted into the binary code , so why need to convert it into the exe file or other formats?Can any one suggest some links also. -- DeltaOne ------------------------------------------------------------------------ Posted via http://www.codecomments.com ------------------------------------------------------------------------ Tag: printf with format Tag: 246489
  - 16
    - COM - Should interfaces be marshalled when passing between threads Hi, My understanding is that you dont need to marshal interface pointers between threads of a process when they are all in a Multi Threaded Apartment (all threads in the process call CoInitializeEx(NULL, COINIT_MULTITHREADED)). I am getting apparently conflicting advice from some pages - here are a couple of snippets: 1) From "http://msdn.microsoft.com/msdnmag/issues/1100/wicked/" Passing a raw interface pointer (a 32-bit address in memory) to another thread without marshaling it bypasses COM's concurrency mechanism, and can produce all sorts of undesirable behavior if the sending and receiving threads reside in different apartments. (In Windows® 2000, because two objects can share an apartment but reside in different contexts, it can even get you in trouble if the threads are in the same apartment.) 2) From "http://support.microsoft.com/?kbid=150777" Multi-threaded Apartment model (MTA): ... Interfaces are not marshaled between threads. Thanks for this and past help, David. Tag: printf with format Tag: 246487
  - 17
    - error C2666: '[]' : 3 overloads have similar conversions I'm getting this error message from VC6 error C2666: '[]' : 3 overloads have similar conversions. These are the three operators T & operator [](int idx) { assert( idx < Size) ; return ptr[idx]; } T operator [](int idx) const { assert( idx < Size) ; return ptr[idx]; } operator T *() { return ptr; } The statements that trips the error are size_t i; for (c = stuff; *c; ++c) { buffer[++i] = *c; If I change the type of i from size_t to int, or change the type of the idx parameter in the operators to size_t, the error goes away. Can anyone explain why the the error? Tag: printf with format Tag: 246484
  - 18
    - vtable help needed for RTTI solution Hello I have made the following code to give me custom run-time type information because the standard RTTI doesn't give me what I want, i.e. it doesn't seem to be able to compare two objects and give a definitive boolean, yes or no answer as to whether the first either is, or is derived from, the second (but not the other way round, i.e. fn(D*,B*) must return true; but fn(B*, D*) false.) (I can't think how this is possible using standard RTTI - if it is please demonstrate a replacement for my _tmain function that accomplishes the same thing...) I'm quite happy with the code, as it seems to work in the way that I want, *but* it does involve a bit of work in two places and it's largely the second of these I'm looking for the sort of trickery I know only you experts are capable of... you might find it easier to compile it first to see what it does, then read it, rather than the other way round... 1) I need to explicitly specify getsingleid for every class that I want to derive from IRegable (I'm not too fussed about this, as I've got used to the idea of including a special header file containing a list of the instantiations at the bottom of the template's cpp file) 2) I need to override getid(bool) for *every* class that I want to derive from IRegable - implementing it isn't *too* time consuming in its logic - as for each class I implement it for, I only have to look at the classes it directly implements aswell as its own name to write its implementation, but my main worry is forgetting to implement it at all - if I derive a class B from IRegable (and implement getid(bool)) but then derive a class D from B and forget to implement getid(bool), the compiler doesn't complain, and D falls back on B's implementation of getid, giving it the wrong ID, obviously therefore causing fn(B,D) to give a false positive. This bothers me - and I was wondering if it was in some way possible to 'hack into the vtable' in order to accomplish this more elegantly (or not, as the case may be!) I'm really looking for, well, basically some magic way of not having to remember implement getid for every class. But my gut instinct tells me it's possible... is it? If it's not, please tell me! (p.s., it is necessary to have the multiple inheritance and the 'virtual public' thing) (p.p.s., in the real app, '32' might be replaced by something larger depending on how many classes there are.) #include <bitset> #include <string> using namespace std; static int nextid = 0; template<class T> bitset<32> getsingleid() { static bitset<32> retval; if(retval.none()) retval.set(nextid++); return retval; } class IRegable { public: virtual bitset<32> getid(bool bComposite) const = 0; virtual string getname() = 0; static void fn(IRegable* obj1, IRegable* obj2) { if(((obj1->getid(true)) & (obj2->getid(false))).any()) _tprintf(_T(" ... is a %s\n"), (obj2->getname()).data()); else _tprintf(_T(" ... is not a %s\n"), (obj2->getname()).data()); }; ~IRegable() {_tprintf(_T("IRegable object \"%p\" is dying!\n"), (void*)this);} }; class ChildWindow : virtual public IRegable { public: virtual bitset<32> getid(bool bComposite) const {return getsingleid<ChildWindow>();} virtual string getname() {return string(_T("ChildWindow"));} }; class Window : virtual public IRegable { public: virtual bitset<32> getid(bool bComposite) const {return getsingleid<Window>();} virtual string getname() {return string(_T("Window"));} }; class WndProcWindow : public Window { public: virtual bitset<32> getid(bool bComposite) const { return bComposite ? getsingleid<WndProcWindow>() | Window::getid(true) : getsingleid<WndProcWindow>(); } virtual string getname() {return string(_T("WndProcWindow"));} }; class SimpleControl : public ChildWindow { public: virtual bitset<32> getid(bool bComposite) const { return bComposite ? getsingleid<SimpleControl>() | ChildWindow::getid(true) : getsingleid<SimpleControl>(); } virtual string getname() {return string(_T("SimpleControl"));} }; class ComplexControl : public ChildWindow, public Window { public: virtual bitset<32> getid(bool bComposite) const { return bComposite ? getsingleid<ComplexControl>() | ChildWindow::getid(true) | Window::getid(true) : getsingleid<ComplexControl>(); } virtual string getname() {return string(_T("ComplexControl"));} }; int _tmain(int argc, _TCHAR* argv[]) { { ChildWindow child; Window win; WndProcWindow wndproc; SimpleControl simple; ComplexControl complex; IRegable* objs[] = {&child, &win, &wndproc, &simple, &complex}; for(int i = 0; i < 5; i++) { _tprintf(_T("Object of type %s:\nSimple ID : %s\nComplex ID: %s\nAddress: 0x%p\n"), objs[i]->getname().data(), (objs[i]->getid(false).template to_string<char,char_traits<char>,allocator<char> >()).data(), (objs[i]->getid(true).template to_string<char,char_traits<char>,allocator<char> >()).data(), (void*)(objs[i])); for(int j = 0; j < 5; j++) IRegable::fn(objs[i], objs[j]); } } } Tag: printf with format Tag: 246480
  - 19
    - WebBrowser Objects Hi Im using the IWebBrowser2 class. Is it possbile to create it windowless ? Where would i find the instructions on how to set up so the object is windowless ? I already have a COM container that supports IOleInPlaceSiteWindowless so just wondering if it can be done. thanks Tag: printf with format Tag: 246479
  - 20
    - Limit the memory for a child process Hi I am writing a system that needs to start other applications, and needs to evaluate those applications. However, I would like to be able to restrict the amount of memory these child processes can consume. What I need is: before or after the process is created, I would like to set a memory limit (like 16Mb, 64Mb, etc) on the child process. The child process should not be able to consume (allocate) more memory, be it real or virtual, than this limit. Is this possible in any way? Thank you -Lenard Tag: printf with format Tag: 246472
  - 21
    - STL valarray In the STL documentation for valarray, it states: "These template classes and functions are permitted unusual latitude, in the interest of improved performance. Specifically, any function returning valarray<T> may return an object of some other type T'. In that case, any function that accepts one or more arguments of type valarray<T> must have overloads that accept arbitrary combinations of those arguments, each replaced with an argument of type T'. (Put simply, the only way you can detect such a substitution is to go looking for it.)" Has anybody got an example of what they refer to as 'such a situation', and why does it state any function ..."must have overloads..." - why must it have overloads? What if I want to define a function that returns or takes as argument a valarray<T>, and I define that it will only ever take a valarray<T> as an argument? Thanks Tag: printf with format Tag: 246470
  - 22
    - memset question Hello, I am a little unsure which of the following is correct:- wchar_t buf[33]; memset(buf, L'\0', 33); or...... wchar_t buf[33]; memset(buf, L'\0', 66); I think the second, a wchar_t is two bytes right? and memset 3rd param is a byte count. Am I correct Many thanks -John Tag: printf with format Tag: 246463
  - 23
    - problem with GetChunk in windowsXP Hi, I have a program using ADO with access database. It works quite smoothly in win2000, but in windows XP, there is serious problems, I use the following lines to get the buf from my db and it gives run time error. _variant_t varChunk; varChunk = MeasureDB->m_pRs->Fields->Item["Points"]->GetChunk(ChunkSize); COleVariant s1(varChunk); CString s2=s1.bstrVal; // this line gives exception error Thanks for any hints, Behzad Tag: printf with format Tag: 246459
  - 24
    - Internal compiler error, VC++ 6 Hi, I get the following error message when compiling (without any hint which line envokes the error): fatal error C1001: INTERNAL COMPILER ERROR (compiler file 'F:\9782\vc98\p2\src\P2\main.c', line 494) Please choose the Technical Support command on the Visual C++ Help menu, or open the Technical Support help file for more information Error executing cl.exe. I'm using VC++ 6 and have Service Pack 6 installed. Unfortunately I can't find information about this problem on the internet or in the MSDN help. Does anybody have an idea, what might couse the error? TIA and greets, Johanna Tag: printf with format Tag: 246458
  - 25
    - Uninitialized memory error IDispatchPtr Hello, When I run the following basic code ( vc6 or vc7 ) using purify i get these errors. The code works as intended but since my app makes extensive use of this functionality I am concerned. error: ------------------------------------------------------------------------ [W] UMC: Uninitialized memory copy in SHDocVw::IShellWindows::Item(_variant_t const&) {7 occurrences} Copying 4 bytes from 0x0013f144 (4 bytes at 0x0013f144 uninitialized) Address 0x0013f144 points into a thread's stack Address 0x0013f144 is 4 bytes past the start of local variable 'va' in main Thread ID: 0xa94 Error location SHDocVw::IShellWindows::Item(_variant_t const&) [c:\documents and settings\owner\desktop\wavetest\debug\shdocvw.tli:700] inline IDispatchPtr IShellWindows::Item ( const _variant_t & index ) { IDispatch * _result = 0; => HRESULT _hr = raw_Item(index, &_result); if (FAILED(_hr)) _com_issue_errorex(_hr, this, __uuidof(this)); return IDispatchPtr(_result, false); } main [c:\documents and settings\owner\desktop\wavetest\wavetest.cpp:31] nMax = pShellWindows->GetCount(); for (nIndex = 0; nIndex < nMax; nIndex++) { _variant_t va(nIndex, VT_I4); => spDisp = pShellWindows->Item(va); SHDocVw::IWebBrowser2Ptr spBrowser(spDisp); if (spBrowser != NULL) code: ------------------------------------------------------------------------ #include "stdafx.h" #import <shdocvw.dll> int main(int argc, char** argv) { long nIndex; long nMax; HRESULT sc; sc = ::CoInitialize(NULL); SHDocVw::IShellWindowsPtr pShellWindows; pShellWindows.CreateInstance(__uuidof(SHDocVw::ShellWindows)); IDispatchPtr spDisp; nMax = pShellWindows->GetCount(); for (nIndex = 0; nIndex < nMax; nIndex++) { _variant_t va(nIndex, VT_I4); spDisp = pShellWindows->Item(va); SHDocVw::IWebBrowser2Ptr spBrowser(spDisp); if (spBrowser != NULL) { printf("->%d\t%s\n", nIndex, (LPCTSTR)spBrowser->GetLocationURL()); } } Sleep(2000); return 0; } Tag: printf with format Tag: 246457

Hello,

In console application (Visual C++ 6.0)
How can I printf with format ?

Need sample, please.

Thanks :)

Re: printf with format by David

David
Sat May 07 07:49:34 CDT 2005

"John M" <nobody@nospam_please.com> wrote in message
news:uLYJSqtUFHA.4056@TK2MSFTNGP15.phx.gbl...

> In console application (Visual C++ 6.0)
> How can I printf with format ?
>
> Need sample, please.

What is the problem? The argument list of printf is very flexible
and a sample would probably not illustrate what you want. The
format string is defined very clearly in the standard Microsoft
documentation. What is it you need to understand?

Dave
--
David Webber
Author MOZART the music processor for Windows -
http://www.mozart.co.uk
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