In the doc: QDesktopServices  

http://doc.qt.io/qt-4.8/qdesktopservices.html#openUrl

    bool QDesktopServices::openUrl ( const QUrl &amp; url ) [static]

&gt; Opens the given url in the appropriate Web browser for the user&#39;s desktop environment, and returns true if successful; otherwise returns false.

You can try this code

    QString link = &quot;http://www.google.com&quot;;
    QDesktopServices::openUrl(QUrl(link));

Read [QDesktopServices][1] and [QUrl][2] to get further information.


  [1]: http://qt-project.org/doc/qt-4.8/qdesktopservices.html#openUrl
  [2]: http://qt-project.org/doc/qt-4.8/qurl.html

you are looking for openUrl() in the desktop services class

http://qt-project.org/doc/qt-4.8/QDesktopServices.html



When using this statement

    create table demo (
        ts timestamp
    )

    insert into demo select current_timestamp

I get the following error:

&gt;Cannot insert an explicit value into a timestamp column. Use INSERT with a column list to exclude the timestamp column, or insert a DEFAULT into the timestamp column

How do I insert the current time to a `timestamp` column?

SQL Server: Cannot insert an explicit value into a timestamp column

I&#39;ve heard it&#39;s meant to be a security feature, but it often seems like a security problem. If I want to write a server that uses a privileged port, not only do I have to worry about how secure my code is, I have to especially worry about whether I&#39;m using `setuid` right and dropping privileges.

Why are ports below 1024 privileged?

I wonder how to open a link in a default user browser using Qt (that would open it across all platforms (Win Mac Lin))?

How to open a link in a default user browser in Qt?

<p>I wonder how to open a link in a default user browser using Qt (that would open it across all platforms (Win Mac Lin))?</p>


I saw usages of these two phrases: global scope and global namespace. What is the difference between them?

Global scope vs global namespace

How do I check whether a file exists in a given path or not in Qt?

My current code is below:

    QFile Fout(&quot;/Users/Hans/Desktop/result.txt&quot;);
        
    if(!Fout.exists()) 
    {       
      eh.handleError(8);
    }  
    else
    {
      // ......
    }

But when I run the code it is not giving the error message specified in `handleError` even though the file I mentioned in the path does not exist.

How to check whether file exists in Qt in c++

Is it possible to exclude a source file in the compilation process using wildcard function in a Makefile?

Like have several source files,

    src/foo.cpp
    src/bar.cpp
    src/...

Then in my makefile I have,

    SRC_FILES = $(wildcard src/*.cpp)

But I want to exclude the bar.cpp. Is this possible?

Exclude source file in compilation using Makefile

I do not understand what is the difference between QImage and QPixmap, they seem to offer the same functionality. When should I use a QImage and when should I use a QPixmap?


What is the difference between QImage and QPixmap?

In [a C++ question about optimization and code style][1], several answers referred to &quot;SSO&quot; in the context of optimizing copies of `std::string`. What does SSO mean in that context?

Clearly not &quot;single sign on&quot;. &quot;Shared string optimization&quot;, perhaps?


  [1]: https://stackoverflow.com/questions/10231349/are-the-days-of-passing-const-stdstring-as-a-parameter-over

Meaning of acronym SSO in the context of std::string

Does Qt automatically remove connections between objects , when one of the side is deleted ?

e.g `connect (A .. , B ..)` , when A (a pointer) is deleted , or B is deleted , will the connection be disconnected ? 

Is it necessary to use disconnect explicitly in destructor ?

Are signals in Qt automatically disconnected when one of the class is deleted

How to change the title of the window in Qt? (Both for `QDialog` and `QMainWindow`.)

How to change the Title of the window in Qt?

I have three files . The contents of main.cpp are


    #include&lt;iostream&gt;
    #include&lt;QString&gt;
    
    #include &quot;util.h&quot;
    
    int main()
    {
        using Util::convert2QString;
    
        using namespace std;
        int n =22;
        QString tmp = convert2QString&lt;int&gt;(n);
    
        return 0;
    }



util.h

    namespace Util
    {
        template&lt;class T&gt;
        QString convert2QString(T type , int digits=0);
    }


util.cpp


    namespace Util
    {
        template&lt;class T&gt;
            QString convert2QString(T type, int digits=0)
            {
                using std::string;
                
                string temp = (boost::format(&quot;%1%&quot;) % type).str();
    
                return QString::fromStdString(temp);
            }
    }

When I try to compile these files with following command I get undefined reference error

    vickey@tb:~/work/trash/template$ g++ main.cpp  util.cpp -lQtGui -lQtCore  -I. -I/usr/local/Trolltech/Qt-4.8.0/include/QtCore -I/usr/local/Trolltech/Qt-4.8.0/include/QtGui -I/usr/local/Trolltech/Qt-4.8.0/include
    /tmp/cca9oU6Q.o: In function `main&#39;:
    main.cpp:(.text+0x22): undefined reference to `QString Util::convert2QString&lt;int&gt;(int, int)&#39;
    collect2: ld returned 1 exit status

Is there something wrong with the template declaration or implementation ? why M I getting these linking errors :?


Content Type	Original Author	Original Content on Stackoverflow
Question	myWallJSON	View Question on Stackoverflow
Solution 1 - C++	jdi	View Answer on Stackoverflow
Solution 2 - C++	Tan Viet	View Answer on Stackoverflow
Solution 3 - C++	Nathan Boyd	View Answer on Stackoverflow

How to open a link in a default user browser in Qt?

C++ Problem Overview

C++ Solutions

Solution 1 - C++

Solution 2 - C++

Solution 3 - C++

Why are ports below 1024 privileged?

SQL Server: Cannot insert an explicit value into a timestamp column

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