C++ Reference in QtCreator help
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Do you have a C++ project open? It appears to me that Qt Creator may not scan the source files for symbols unless a C++ project is open.
Have you restarted Qt Creator? I have also found that sometimes Qt Creator needs to be restarted after the qch is registered with it.
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Yes, I did this. Actualy I mean context help, like in "this post":http://qtcreator.blogspot.com/2009/07/context-sensitive-help.html
Content and index are working fine.
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The hover-and-hit-F1 context help works for me with the Qt Creator snapshot from Jun 7 (from revision b4bf0289b1, for Windows). If I hover-F1 over #include <algorithm>, it pulls up the algorithms page. If I hover-F1 over #include <vector>, it pulls up the vector page. If I hover over #include <numeric>, it does not work (probably because there is no numeric keyword in the index). The context help has been somewhat problematic, but it has been getting more reliable over time. I find recent development builds work more often than not.
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bradley: We try not to break creator, but sometimes something does slip through... having said that: Most of the people working on qt creator do so using creator from the branch they work on, so we do tend to notice most breakages:-)
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I tried with Qt Creator 2.0.1 and yes, the context help does not work. I did not debug the Qt Creator, but STL reference (available here: http://developer.qt.nokia.com/wiki/Qt_Creator_Documentation_Gallery) does work in the context mode. This makes me wonder if the context tags were generated correctly when the cppref.qch file was created?
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The context help (F1) seems only to work, if the correct #include statement is in the code. I tried "cppref.qch" and also the Linux Man Pages (available here http://developer.qt.nokia.com/wiki/Qt_Creator_Documentation_Gallery) with Qt Creator 2.2.1 and also the latest nightly build of 2.3.
Here an example code to test the context help:@#include <QtCore/QCoreApplication>
#include <cmath>
#include <cstdio>
#include <cstdlib>int main(int argc, char *argv[])
{
QCoreApplication a(argc, argv);
abs(10.0);
char name[] = "world";
FILE *out = fopen( "output.txt", "w" );
if( out != NULL )
fprintf( out, "Hello %s\n", name );
sqrt(12.2);
rand();
return a.exec();
}
@For example, for the math functions abs() and sqrt() the context help works only if <cmath> is included and recognized by QtCreator (cmath.h must be in the PATH or in INCLUDEPATH of the *.pro project file). The same behavior for rand() and <cstdlib>. But for printf, fprintf or fopen the context help does not work at all, even with <cstdio>. Also no context help for the keywords.
Normally, a context help system should be independent of the syntax parser, i.e. the include files, as it happens often that one would like to know the correct include file for a specific function.
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Same problem for QCoreApplication and its #include statement, as soon as the #include <QtCore/QCoreApplication> statement is commented (//) or removed, "QCoreApplication" change its color and no more context help via F1.
So the problem seems to be general for all qch-help files and not only the C++-reference or Linux Man Pages help files. It is a problem of Qt Creator and not the help files or their context tags.
I have put a bug-report here:
https://bugreports.qt.nokia.com/browse/QTCREATORBUG-5948 -
To finalize this thread - you can find cpp reference in qch format here "CPP-reference":http://en.cppreference.com/w/Cppreference:Archives
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I took the liberty of adding that link to the "Qt Creator documentation gallery":https://qt-project.org/wiki/Qt_Creator_Documentation_Gallery (below the other link to and C++ reference in QCH format;-)
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Qt Creator 2.8.1 here with "Linux Man Pages Qt Help integrated":http://shinnok.com/rants/2011/07/19/linux-man-pages-integration-with-qt-creator/
It runs out something is still not right with recognising the right headers.
In this example, F1 for the fabs function works:
@
#include <math.h>
int main()
{
fabs(-1);
}
@but in this, F1 for the printf does not work:
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#include <stdio.h>
int main()
{
printf("");
}
@