qdebug Questions
7
Solved
I'm using a lot of qDebug() << statements for debug output. Is there any cross-platform way I can redirect that debug output to a file, without resorting to shell scripts? I'm guessing that o...
9
Solved
Often when I need to debug something it's easier to print something using qDebug() instead of debugging step-by-step using a debugger.
The problem is that from time to time the output of qDebug() ...
Honorine asked 9/10, 2012 at 12:6
11
Solved
I am trying to display a number using QDebug in the Hex format. Below is the code which I have written. It is working but the output has string contents enclosed in double quotes:
How to remove th...
8
Solved
I'm using the the C++/Qt print function qDebug,
but sometimes I would like to control how ", space and newline is appended
and not use the default qDebug.
Let's take a simple example:
QString v...
5
Solved
So when you use qDebug() to print a QString, quotation marks appears suddenly in the output.
int main()
{
QString str = "hello world"; //Classic
qDebug() << str; //Output: "hello world"
/...
5
Solved
In Qt Creator on Windows, qDebug() statements don't work, and the following message appears in the output window:
Cannot retrieve debugging output.
How can it be fixed?
Fodder asked 17/1, 2013 at 12:38
3
Solved
I disable the qDebug() messages by writing
CONFIG(release, debug|release):DEFINES += QT_NO_DEBUG_OUTPUT
in the .pro file. This works fine. I would like to know if there is any way to enable qDe...
7
Solved
Is qDebug() thread-safe? By thread-safe I don't just mean not-crashing, but also if I call qDebug() from different threads, is it possible for the output to become mixed-up? I tested it with this c...
Isleen asked 20/3, 2014 at 8:25
1
Can qDebug() output the data in binary format?
For example, I want to check some status variation:
unsigned char status;
...
qDebug() << "Status: " << status;
I want to generate outp...
3
Solved
Coming from MFC, I treated qDebug() much like TRACE(), assuming that it is removed from Release builds by the preprocessor (in MFC it's done using #define TRACE 1 ? (void*) 0 : AfxTrace).
To my su...
6
Solved
Is there any easy way to get the following work? I mean is there any helper class in Qt which prepares the string for qDebug?
QString s = "value";
qDebug("abc" + s + "def");
4
Solved
I currently have a terribly annoying problem while developing programs using Qt and Qt Creator. Whenever I try using qDebug() with a QCoreApplication or QApplication instantiated before using qDebu...
Untangle asked 1/6, 2015 at 21:25
2
Solved
I am trying to use some vector data's name with struct. I am trying to get see which name in qDebug()
To be more clear:
const std::string& testName = "asdfqwer";
qDebug() << testName;
...
4
When running my Qt5 application on linux, I don't see any output from qDebug, qWarning, qCritical or qFatal. I know that I can use qInstallMsgHandler to install a message handler and see them, but ...
2
Solved
I am using a qDebug() of Qt Framework for printf something on the screen. It works just fine when I run application from Qt Creator, but when I try to execute it from Windows cmd it shows nothing. ...
Gallaway asked 17/11, 2012 at 14:56
1
Solved
I have seen bits of Qt code that uses qDebug as if it were printf()
qDebug( format, ... );
Mostly i see it used like std::cout
qDebug() << "one " << var_one;
What is the differenc...
1
Solved
I cannot print out a QString in Qt using QDebug.
Below are some attempts (none work):
QDebug(letters.toStdString());
QDebug(letters.toLatin1());
QDebug() << letters.toUtf8();
QDeb...
Maund asked 20/1, 2014 at 11:34
2
Solved
How do I use qDebug in a Qt console application to output to the Qt Creator "application output" window? Currently qDebug writes to the console window which interferes with the non-debug output.
U...
Bairam asked 2/8, 2012 at 2:22
3
Solved
Sometimes I want to output a single line in qDebug(), but with some conditional text, like
if (fontMetricsLeading < 0)
qDebug() << "!!!";
qDebug() << fontMetricsLeading;
However,...
1
Solved
I have a QByteArray to store data received from a GPS, which is part binary and part ASCII. I want to know for debug proposals know what's being received, so I'm writing a qDebug like this:
//QByt...
Bonni asked 6/6, 2012 at 11:18
1
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