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Search found 56 results on 3 pages for 'narek'.

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• An "About" message box for a GUI with QT

  - by Narek

  QMessageBox::about( this, "About Application", "<h4>Application is a one-paragraph blurb</h4>\n\n" "Copyright 1991-2003 Such-and-such. " "For technical support, call 1234-56789 or see\n" "<a href=\"http://www.such-and-such.com\">http://www.such-and-such.com</a>" ); This code is creating the About message box which I…

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• Qt - QPushButton text formatting

  - by Narek

  I have a QPushButton and on that I have a text and and icon. I want to make the text on the button to be bold and red. Looked at other forums, googled and lost my hope. Seems there is no way to do that if the button has an icon (of course if you don't creat a new icon wich is text+former icon). Is that the only way? Anyone has a better idea?

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• Vim Editor is very smart?

  - by Narek

  I am programming in C++ or Java. So I want to use Vim editor, because it is very flexible. I have heard that I can configure the Vim editor to be able to go from object to the definition from function to the definition from class name to the definition Do we have any professional Vim-er that could tell me how exactly to configure Vim for…

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• Qt - QTimeEdit as a timer viewer

  - by Narek

  I have a QTimeEdit which I want to set to some value and the each second I want to decrease by 1 the value that shows the QTimeEdit. So when it will be 0, the I want to have a QMeesageBox that says "Your time is off.". Can I some how do this with QTimeEdit interface, or I should use QTimer?

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• Difference of function argument as (const int &) and (int & a) in C++

  - by Narek

  I know that if you write void function_name(int& a), then function will not do local copy of your variable passed as argument. Also have met in literature that you should write void function_name(const int & a) in order to say compiler, that I dont want the variable passed as argument to be copied. So my question: what is the…

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• Passing array to function with pointer loses array size information!

  - by Narek

  If I write int main() { int a[100] = {1,2,3,4,}; cout<<sizeof(a)/sizeof(a[0])<<endl; return 0; } I get 400! If I write void func(int *a); int main() { int a[100] = {1,2,3,4,}; func(a); return 0; } void func(int *a) { cout<<sizeof(a)/sizeof(a[0])<<endl; } Then I get 400! …

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• What kind of good approaches use c++ programmers for storing error messages?

  - by Narek

  Say I have a huge code and have different kinds of error messages. For that I want to have a separate place where I store error codes and error messages. For example, for an error that occured because the program could not open a file I stroe: F001 "Can not open a file." "The same error message in another language" "The same…

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• Qt- how to set QWidget width

  - by Narek

  How to set QWidget width? I know setGeometry(QRect& rect) function to do that, but in that case I should use geometry() function to get former parameters of my QWidget, then I should increment the width and use setGeometry(..). Is there any ditect way to say QWidget aa; aa.setWidth(165); //something like this?

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• Qt - serialize/deserialaize text plus picture

  - by Narek

  I want to use a field (kind of QTextEdit), which is capabale of storing picture and text (like MS Word is doing) and it serializes and deserialaizes picture+text data. Is there any Qt Widget that allows us to manipulate with picture and text simultaniously and it has set/get functions which operate with serializable type? In…

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• How does compiler understand the pointer type?

  - by Narek

  How c++ compiler understands the pointer type? As I know pointer has a size equal to WORD of the OS (32 or 64). So does it store dome info in that 32(or 64) bits about type? Just because you can not have a pointer on one type and assign to that pointer another pointer with a different type.

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• Does C++ have recursion depth?

  - by Narek

  In Python there is a recursion depth. Seems it is because Python is an interpreter, not a compiler. Does C++ have the same concept? Or it only connected with RAM limit?

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• Qt -how to know whether content in child widgets has been changed?

  - by Narek

  In QMainWindow I have 2 QSplitters. In that splitters I have QTextEdit, QLineEdits, QTableWinget, Ragio buttons and so on... I want to know if somthing has been chaged after pressing File-New menu button. Is there any general method for doing this? Somwhere I have read that it is recomended to use isWindowModified() function…

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• Web and stand-alone apps development tendency

  - by Narek

  There is a strong tendency of making web apps and even seems that very soon a lot of features will be available online so that for every day use people will have all necessary software free online and they will not need to install any software locally. Only specific (professional) tools that usually people don’t use at home…

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• Virtual functions and templates in C++ - can they be replaced with other (existing in C++) opertaion

  - by Narek

  For example concept of Templates in C++ are for comfort as compiler generates some additional code, for your class or for your function, isn't it? So we could live without template by doing some additional (manual work). What about virtual functions??? Are there any situations where both of them are irreplaceable?

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• How to export some data into .rtf or .doc?

  - by Narek

  Say I have created a GUI (Qt) that operates with some data(text+image). How I can export that data in one of listed formates in title. I guess it is better to export info .rtf as it is free cross-platform formt(??), isn't it?

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• Generate set/get methods for a c++ class

  - by Narek

  Is there any tool that generates set and get methods for a class. Just I create classes very frequently and would like to have a tool which for each class-member wil generate following functions: Member_Type getMemberName() const; void setMemberName(const Member_Type & val);

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• Assembly instruction address...

  - by Narek

  Why avery time when I disassembly the same .exe file the same instruction is in the same address? And what address is that(RAM? HDD? Virtual?)?

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• Problem with default member functions of class in C++ (constructor, destructor, operator=, copy cons

  - by Narek

  We know that compiler generates some member functions for user-defined class if that member functions are not defined but used, isn't it. So I have this kind of code: class AA { }; void main() { AA a; AA b(a); a = b; } This code works fine. I mean no compiler error. But the following code.... class AA { …

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• How to cin Space in c++?

  - by Narek

  Say we have a code: int main() { char a[10]; for(int i = 0; i < 10; i++) { cin>>a[i]; if(a[i] = ' ') cout<<"It is a space!!!"<<<endl; } return 0; } How to cin a Space symbol from command line? If you write space, program ignores! :(

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• Analog of Java Form Layout in Qt

  - by Narek

  Once I have programmed GUI with Java and have used Form Layouts. Form layout (if I am not mistaken that is from SWT library) made possible to give right, left, top and bottom adges of any GUI element (widget) with respect to other widgets in the same widget (parent widget) or with respect to the adges of parent widget. So…

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• Qt - How to place a QTextEdit with left and right margins in a QVBoxLayout?

  - by Narek

  How to place a QTextEdit with left and right margins in a QVBoxLayout? I could use, of course, a QHBoxLayout, place the QTextEdit into that horizontal layout in between to spacings (addSpacing(40)) and only then the horizontal layout could add into the vertical layout, but want to know if there is a direct way of doing…

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• c++ - FIFO implementation

  - by Narek

  While implementing a FIFO I have used the following structure: struct Node { T info_; Node* link_; Node(T info, Node* link=0): info_(info), link_(link) {} }; I think this a well known trick for lots of STL containers (for example for List). Is this a good practice? What it means for compiler when you…

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• Instruction for installing an environment with Qt and Qt integration with Visual Studio 2008.

  - by Narek

  I want to use Qt lib but I don't know how to install Visual Studio 2008+Qt+Qtintegration. I have read some forums, that step by step tell what to download, where to download from, and then what to do. But that was for old versions of mentiond products. I ask to Qt developers tell me the way to install these items on…

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• How does the stream manipulators work?

  - by Narek

  It is well known that the user can define stream manipulators like this: ostream& tab(ostream & output) { return output<< '\t'; } And this can be used in main() like this: cout<<'a'<<tab<<'b'<<'c'<<endl; Please explain me how does this all work? If…

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• What key concepts and nuances in C++ you know?

  - by Narek

  What kind of key points and concepts should a person know from C++ (and from programming in general) to be considered that he/she possesses C++ (and programming, in general) skills good. e.g. //Even if sizeof(T) may not be equal to 1, this code steps over array elements T v[]; for(T *p = v ; *p !=…

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