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• Given an ELF binary built from C++ with gcc, how can I determine the sizeof some type in it?

  - by user321735

  Is there some way using binutils tools to get this? For example: // x.cc typedef long long MyInt; int main(int argc, char* argv[]) { // blah blah blah } Then: g++ -g x.cc -o a.out How can I analyze a.out to get sizeof(MyInt)? GDB can do it, but I don't want to use GDB because it's really slow for large binaries.

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• Program for WIndows Embedded

  - by Syma

  Hi, We have request from our clients to provide a POS terminal version of our web-based software. They want to be able to enter record to their database from POS terminal (via web service) instead of using PC browser. I am the one to develop this application, as I am the lead developer of the main application. I haven't done any Windows embedded programming or .net compact edition before and would appreciate link to good tutorial or info on how to start developing for Windows CE 6.0 enabled POS terminal or device. Thanks

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• I want to compile a batch file into an exe using c++, i can get through parsing the batch file and w

  - by Nareshkumar Rao

  Ok, here's the thing, I am creating an application in DevC++ that will read in a batch file. then, one by one parsing it using: system(getline(myfile,line)); After setting everything up, I save the newly created file as "main.cpp". The problem is, I want to compile it into an exe, from my program, for the end user. So basically, I'm asking whether I can compile a C++ file from a C++ Exe..

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• How to change the default behavior of overwriting when GCC -fstack-protector-all is set?

  - by Vicente Botet Escriba

  I would like to use the GCC -fstack-protector-all option on release mode. The main issue is that when there is an override a code is built. I would like to plug something that will just dump the stack and let the program continue. Is there a way to do that?

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• How do I output installation status using gtk in c?

  - by Runner

  int main( int argc, char *argv[] ) { GtkWidget *window; gtk_init (&argc, &argv); window = gtk_window_new (GTK_WINDOW_TOPLEVEL); gtk_widget_show (window); gtk_main (); return 0; } The above is just a empty winform,I want to output dynamic information in it(not editable), how should I do that?

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• Variable Addition in C Language

  - by pavun_cool

  Hi all, main() { char a,b,c; a=6; b=-5; c = a+b ; printf ("%d %d %d \n" , a, b,c ) ; } Here , what actually happens 00000110 10000101 -------- 10000111 -------- So values c will -11 , then how come it is 1.

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• Databank for city information

  - by Kimble

  I'm hacking on a semi commercial(ads) travel related web site and would like to add a couple of lines about the biggest cities in Europe. Just a few lines about what (if anything) the city is known for, main attractions and so on. Can someone recommend me a data source with a compatible license? Bonus points for being easily importable.

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• JQuery addclass to another div (but not parent) if no data is found

  - by Danny

  I have this to add a class to the main table that the report is in if there is no data returned. $('#report-area table td:contains("Sorry, your search did not return any data")').parents('#reportArea').addClass('no-report-data') However, I have another div area "#report-footer" but it's not inside #report-area. I'd like to also add the .no-report-data class to "#report-footer" as well but in this case I don't think the .parents selector will work. Is there another selector I can use to do this?

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• How to implement a login page in a GWT app?

  - by Gatis

  My WebApp needs to authenticate user before allowing any sort of access. The scenario I'm trying to implement is a login page with username and password fields. Once user hits "send" button, a sign like "Verifing..." should be shown up while an RPC call verifies credentials. In case of success, load the main app screen. What is the best way to implement that?

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• Why is used umask ?

  - by fabrizioM

  I am reading some source code and I found at the very begin of the main routine this statement: umask(077); What could be the reason for that? The man page (man 2 umask) states: umask -- set file creation mode mask This clearing allows each user to restrict the default access to his files But is not clear to me why would do that? as a shortcut ?

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• Are there any difference between windows NT and windows XP driver development?

  - by user198729

  I found this tutorial on windows NT driver development, but not sure whether it can be applied for windows XP without modification. Anyone knows? UPDATE BTW, is it a MUST to use cdecl calling convention(int _cdecl main) to communicate with a driver?

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• Converting a const char* into a double

  - by Koning Baard

  I am trying to convert a const char* to a double precision floating point number: int main(const int argc, const char *argv[]) { int i; double numbers[argc - 1]; for(i = 1; i < argc, i += 1) { /* -- Convert each argv into a double and put it in `number` */ } /* ... */ return 0; } Can anyone help me? Thanks

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• Andriod passing objects between activities

  - by Stan

  Say if I have a locationManager(LM) object in activity A, which is my main menu. All the sub-activities need to use LM. In a good design, should I pass LM object to sub-activities? how? Please suggest some good coding pattern. Thanks.

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• How to access object slicing?

  - by kam

  class A { public: int i; int j; }; class B : public A { public: int k; }; main() { A *a = new B; } is it possible to access slicing data?

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• Winforms - why does a "Show()" after a system tray double click end up in my app minimized?

  - by Greg

  Hi Winforms - why does a "Show()" after a system tray double click end up in my app minimized? How do I ensure Inthe notifyicon double click event that my hidden main form comes back visible as normal, not minimized (nor maximised for that matter too)

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• Qt gstreamer problem

  - by ZolaKt

  Ptterb can you post your full code please? I copied your code. Added fvidscale_cap to pipeline, with: self.player.add(self.source, self.scaler, self.fvidscale_cap, self.sink) gst.element_link_many(self.source,self.scaler, self.fvidscale_cap, self.sink) From the main program I create a new QWidget, and pass its winId() to Vid constructor. The widget start loading, but crashes. The output says: should be playing Segmentation fault

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• how to handle click event in win32 API?

  - by Rakesh

  I have created a simple win 32 application..in which it has a textbox and a button in a dialog window..first when I created this..it didnt display the dialog window and then what I did is added the code below to handle the close(WM_CLOSE) of the dialog window...but I want to know, how to handle the button click event.. LRESULT WINAPI myProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { if(message == WM_CLOSE ) { PostQuitMessage(0); } return 0; } to call the above in my main pgm I used SetWindowLong(hwnd,DWL_DLGPROC, (long)myProc)

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• how works applications which blocks web sites?

  - by noisy

  I know only one low-level way of blocking websites - hosts file. However, it is obvious that main stream programs has some other way of achieving this. I have an idea for new model of this kind of program, but without possibility of blocking sites it is useless :(

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• finding empty directories unix

  - by soField

  i need to find empty directories for given list of directories some directories have directories inside it if inside directories also empty i can say main directory is empty otherwise it's not empty how can i test this for example A>A1(file1),A2 this is not empty beacuse of file1 B>B1(no file) this is empty C>C1,C2 this is empty thanks

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• Implicit conversion while using += operator?

  - by bdhar

  Conside the following code: int main() { signed char a = 10; a += a; // Line 5 a = a + a; return 0; } I am getting this warning at Line 5: d:\codes\operator cast\operator cast\test.cpp(5) : warning C4244: '+=' : conversion from 'int' to 'signed char', possible loss of data Does this mean that += operator makes an implicit cast of the right hand operator to int? P.S: I am using Visual studio 2005

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• printing the instance in Python

  - by kame

  Hello! With this code: class Complex: def __init__(self, realpart, imagpart): self.real = realpart self.imag = imagpart print self.real, self.imag class Circle: def __init__(self, radius): print "A circle wiht the radius", radius, "has the properties:" print "circumference =", 3.14*radius print "area =", 3.14*radius**2 I get this output: >>> Complex(3,2) 3 2 <__main__.Complex instance at 0x01412210> But why does he print the last line?

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• Persisting and applying Linq Query to collection

  - by MattiasK

  I have a scenario where I would want a plugin to construct a LINQ (to objects) query, send it across an appdomain and then apply and run it against a collection of my choosing Is it possible, how? If not, perhaps I could send a whole method (interface) across the appdomain and run it against the data on the appside? The main thing is that I want the data to reside in the CurrentDomain and the logic for operating on it in the plugin so I don't have to send the data across the boundary...

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• How do I store and switch over preferences?

  - by kunjaan

  I want to store some user preferences Would Enum be a good datastructure to store them? If so, how do I do it? This is the final usage of the datastructure. main(){ int my_val = PREFERENCES.BLACK; switch(PREFERENCES){ case BLACK: ... }

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• How to get the substring in C#?

  - by Nano HE

  Hi, I can get the first three characters with the function below. However, how can I get the output of the last five characters (Three) with Substring() function. Or other string function will be used? Thank you. static void Main() { string input = "OneTwoThree"; // Get first three characters string sub = input.Substring(0, 3); Console.WriteLine("Substring: {0}", sub); // Output One. }

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• Does binding temporary to a reference require a copy constructor in C++?

  - by vitaut

  Consider the following code: class A { A(const A&); public: A() {} }; int main() { const A &a = A(); } This code compiles fine with GCC, but fails to compile with Visual C++ with the following error: test.cc(8) : error C2248: 'A::A' : cannot access private member declared in class 'A' test.cc(2) : see declaration of 'A::A' test.cc(1) : see declaration of 'A' So is it necessary to have a copy constructor accessible when binding a temporary to a reference?

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