Posts by Kob0724

Hey guys, I have what I would consider a fairly unique problem. I'm not even sure where to start looking for a solution. I have template class that uses a typedef to define a map. But when I go to make an iterator for that map, I get a compile errors. Here's my class (it's fairly simple):

template<class S>
class RangeValidatorDependency : public Dependency{
public:
    typedef std::map<std::pair<S,S>, Teuchos::RCP<const Teuchos::ParameterEntryValidator> > RangeToValidatorMap;

      
        RangeValidatorDependency(std::string dependent, std::string dependee, RangeToValidatorMap rangesAndValidators,
        Teuchos::RCP<const Teuchos::ParameterEntryValidator> defaultValidator)
                :Dependency(dependent, dependee, Dependency::RangeValiDep)
        {
                this->defaultValidator = defaultValidator;
                this->rangesAndValidators = rangesAndValidators;
        }

        virtual Teuchos::RCP<const Teuchos::ParameterEntryValidator> getValidatorFor(S value) const{
                RangeToValidatorMap::const_iterator it;
                for(it = rangesAndValidators.begin(); it != rangesAndValidators.end(); it++){
                        S min = it->first.first;
                        S max = it->first.second;
                        if(value >= min && value <=max)
                                return it->second;
                }
                return defaultValidator;
        }
private:
        Teuchos::RCP<const Teuchos::ParameterEntryValidator> defaultValidator;
        RangeToValidatorMap rangesAndValidators;
};

The problem occurs on this line

RangeToValidatorMap::const_iterator it;

This is the compile error I get.

TivaBuena_StandardDependencies.hpp:16: error: expected `;' before ‘it’

I'm not sure what to do. Anyone know what the problem is?

If you would rather use C++ though, QT is a nice set of classes that works right on top of C++. It's mainly geared toward GUI development, but I think it has some network fucntionality too. You might want to check that out.

Holy cow kid. Can you give us a little more to work on then that? What error are you getting?

Well, you're going to need some functions and classes that obviously allow you to do network type things. C++ by default comes with none of these, (although I bet you could find some libraries or something out there). I suggest checking out Java. It's got tons of really hand stuff for doing things over a network, and in many respects is like a simpler version of C++.

Well guys, I figured it out. Many thanks to thiago from the QT mailing list. Here's the deal. I was class forwarding QXmlStreamWriter in my header files, but aparently just on Macs, class forwarding with QXmlStreamWriter or QXmlStreamReader class forwarding does not work. So the soultion was to use

#include <QXmlStreamWriter>

in my header file instead of

class QXmlStreamWriter;

Are there any words that do work?

I think the problem is here

#
//Removes the instance of the characters matching.
#
for(int index3=index2;index3<lengthSecondWord;index3++)

You're removing every single instance of the character at index1 from the second word. You only want to remove one instance of the character if I'm not mistaken, the instance of the character at index2.

Eclipse is nice. I really like the plugin system. It made developing for QT really easy.

Valkyrie is a pretty nice front-end for ValGrind. and its free.

http://www.open-works.net/projects/valkyrie.html

What are the words that don't work?

The -E garnered no resutls. I'm not looking for stuff about QXmlStreamWrtier (I know all about that), my problem seems to be with this QCoreXmlStreamWriter. I don't think it's an install problem. When I had my friend compile it on his Mac, he installed QT himself. So we both independently installed QT of eachother, and yet we both get the same error. Besides, QT is pretty simple to install.

What version(s) of QT are on the machines which work?

Why do the same directories repeat over and over in the compiler command line?

If you do a search of /usr/local/Trolltech/Qt-4.4.0/include, do any of those files contain QCoreXmlStreamWriter?
If they do, check to see if such references are inside #ifdef ... #endif conditional switches. If they are, you need those switches on the command line.

All computers are using QT 4.4

The qmake program is what generates the make file. Why it decides to include the same directories twice I do not know. When I compile on both the linux box and the beowulf cluster, the same "double include" is in the command as well. In fact the commands on the various platforms all look virtually the same.

I only found QCoreXmlStreamWriter in one file. Here is where it appears:
include/QtCore/qxmlstream.h

#if defined Q_XMLSTREAM_RENAME_SYMBOLS
// don't worry, we'll undef and change to typedef at the bottom of the file
# define QXmlStreamAttribute QCoreXmlStreamAttribute
# define QXmlStreamAttributes QCoreXmlStreamAttributes
# define QXmlStreamEntityDeclaration QCoreXmlStreamEntityDeclaration
# define QXmlStreamEntityDeclarations QCoreXmlStreamEntityDeclarations
# define QXmlStreamEntityResolver QCoreXmlStreamEntityResolver
# define QXmlStreamNamespaceDeclaration QCoreXmlStreamNamespaceDeclaration
# define QXmlStreamNamespaceDeclarations QCoreXmlStreamNamespaceDeclarations
# define QXmlStreamNotationDeclaration QCoreXmlStreamNotationDeclaration
# define QXmlStreamNotationDeclarations QCoreXmlStreamNotationDeclarations
# define QXmlStreamReader QCoreXmlStreamReader
# define QXmlStreamStringRef QCoreXmlStreamStringRef
# define QXmlStreamWriter QCoreXmlStreamWriter
#endif

I've been trying to compile a program I wrote with QT on a Mac for about a week now and I can't get it to work for the life of me. I'm very confused because the code compiles just fine on a linux machine using a core 2 duo, and also on a Beowulf cluster. I've tried compiling it on both an IMac and a MacBook (both Core 2 Duos) and in each case I get the same compilation errors. The errors seem to be complaining about something called QCoreXmlStreamWriter. I've googled this and I get 0 results (something I found extremely odd). I do not have the words QCoreXmlStreamWriter anywhere in my source code (believe me, I've checked many times). I also made sure that I included the xml module in my QT project file. I am absolutely stumped. Any one have an idea? An example of one of the compile errors along with the make command being used is included below.

etutils.cpp: At global scope:
etutils.cpp:145: error: prototype for 'void SubLineGroup::generateInputFileSection(QCoreXmlStreamWriter&)' does not match any in class 'SubLineGroup'
etutils.h:256: error: candidate is: virtual void SubLineGroup::generateInputFileSection(QXmlStreamWriter&)
etutils.cpp:177: error: prototype for 'void SubComboGroup::generateInputFileSection(QCoreXmlStreamWriter&)' does not match any in class 'SubComboGroup'
etutils.h:300: error: candidate is: virtual void SubComboGroup::generateInputFileSection(QXmlStreamWriter&)
etutils.cpp:199: error: prototype for 'void SubSPGroup::generateInputFileSection(QCoreXmlStreamWriter&)' does not match any in class 'SubSPGroup'
etutils.h:340: error: candidate is: virtual void SubSPGroup::generateInputFileSection(QXmlStreamWriter&)

g++ -c -pipe -g -Wall -W -DQT_XML_LIB -DQT_GUI_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/local/Trolltech/Qt-4.4.0/mkspecs/macx-g++ -I. -I/usr/local/Trolltech/Qt-4.4.0/lib/QtCore.framework/Versions/4/Headers -I/usr/local/Trolltech/Qt-4.4.0/include/QtCore -I/usr/local/Trolltech/Qt-4.4.0/include/QtCore -I/usr/local/Trolltech/Qt-4.4.0/lib/QtGui.framework/Versions/4/Headers -I/usr/local/Trolltech/Qt-4.4.0/include/QtGui -I/usr/local/Trolltech/Qt-4.4.0/include/QtGui -I/usr/local/Trolltech/Qt-4.4.0/lib/QtXml.framework/Versions/4/Headers -I/usr/local/Trolltech/Qt-4.4.0/include/QtXml -I/usr/local/Trolltech/Qt-4.4.0/include/QtXml …

Yea, I'd come across the same stuff Duoas. I was just hoping there might be a way to do it without having to make my own radio button images. But I guess not. Thanks anyway!

Cheers.

I'm not sure if this is the best place for this thread, but it's the best I could come up with. I'm using a QT Style Sheet to style a radio button like this:

QRadioButton{
	background:#5F7536;
	color:#CBF57D;
	font:bold;
}

It works fine except that in addition to changing the color of the text to #CBF57D, it also changes the color of the indicator to #CBF57D. I don't want this. I want the indicator to stay black as if I hadn't styled the indicator at all. Does anyone know how to do this? I tried this, but it didn't work:

QRadioButton::indicator{
	color:black;
}

Neither did:

QRadioButton::indicator{
background:black;
}

Anyone have any ideas?

I think I may have exactly the cure for what ails ya'. If you're using QT, QT offers an excellent feature called QT Style Sheets. They're basically like CSS style sheets for QT Widgets. Check this out

I found the problem. This is the constructor of CheckArray, a subclass of ETArray:

CheckArray::CheckArray(const QString &title, const QString &rowHead, const QString &colHead, int rows, int cols, QWidget *parent)
	:ETArray(title, parent)
{
	
	theRowHead = rowHead;
	theColHead = colHead;
	
	allCheck = new QCheckBox("Check all boxes?");
	
	colHeadVector = new std::vector<QLabel*>();
	rowHeadVector = new std::vector<QLabel*>();
	theGrid->addWidget(allCheck,0,0);
	
	changeSize(rows, cols);
	setCheckable(true);
	etResize();
}

As you can see, I called new again in here creating a second set of vectors. The first set (that I created in ETArray) must have been the ones that never got deleted. Ancient Dragon, thanks for the advice. I'm new to C++ (long time java user though), and still not quite sure when I should and shouldn't use pointers. I'm going to go back and make the change you suggested.

I can not understand why I am getting this memory leak. First, here is the ouput from valgrind.

==27078== 24 bytes in 1 blocks are definitely lost in loss record 45 of 827
==27078==    at 0x4A061A5: operator new(unsigned long) (vg_replace_malloc.c:167)
==27078==    by 0x434B8F: ETArray::ETArray(QString const&, QWidget*) (etutils.cpp:343)
==27078==    by 0x434D4E: CheckArray::CheckArray(QString const&, QString const&, QString const&, int, int, QWidget*) (etutils.cpp:430)
==27078==    by 0x44B14F: SurfCntrlParams::SurfCntrlParams(QWidget*) (surfcntrlparams.cpp:111)
==27078==    by 0x44B7EC: SurfCntrlParams::instance() (surfcntrlparams.cpp:23)
==27078==    by 0x406F48: MetaWindow::addTab(int) (metawindow.cpp:115)
==27078==    by 0x40728E: MetaWindow::setupTabs() (metawindow.cpp:99)
==27078==    by 0x4579A0: MetaWindow::qt_metacall(QMetaObject::Call, int, void**) (moc_metawindow.cpp:69)
==27078==    by 0x58BDA7A: QMetaObject::activate(QObject*, int, int, void**) (qobject.cpp:3001)
==27078==    by 0x458D57: TramontoSim::ready() (moc_tramontosim.cpp:79)
==27078==    by 0x4209AD: TramontoSim::readyEmitter() (tramontosim.cpp:70)
==27078==    by 0x458DC1: TramontoSim::qt_metacall(QMetaObject::Call, int, void**) (moc_tramontosim.cpp:69)

This is the line that seems to be in question:

ETArray::ETArray(const QString &title, QWidget *parent)
	:ETGroupBox(title, parent)
{
	colHeadVector = new std::vector<QLabel*>(); //line 342
	rowHeadVector = new std::vector<QLabel*>(); //line 343
	widgetVector = new std::vector<std::vector<QWidget*>* >();  //line 344
	arrayGrid = new QGridLayout(); //line 345
	theGrid->addLayout(arrayGrid,1,0); //line 346
}

I don't understand why I am getting a memory leak because in the destructor I make sure to delete the vector, and all the QLabels should be deleted by QT since they all are assigned a parent widget in a different part of the program. Here's my desctructor:

ETArray::~ETArray(){
	delete colHeadVector;
	delete rowHeadVector;
	for(int i=0; i<widgetVector->size(); i++){
		delete  widgetVector->at(i);
	}
	delete widgetVector;
}

Anyone have any ideas?

I figured it out. The problem was that I was defining type_pairPotList in the constructor of FuncCntrlParams. Like this:

//funcntrlparams.cpp
.
.
FuncCntrlParams::FuncCntrlParams(QWidget *parent)
	:QWidget(parent)
{
	QStringList type_pairPotList = QStringList() << "Pair LJ12-6 CS" << "Pair Coulomb CS" << "Pair Coulomb" << "Pair Yukawa CS";
.
.
}
.
.

Once I took it out of the constructor like this:

//funcntrlparams.cpp
.
.
QStringList type_pairPotList = QStringList() << "Pair LJ12-6 CS" << "Pair Coulomb CS" << "Pair Coulomb" << "Pair Yukawa CS";
FuncCntrlParams::FuncCntrlParams(QWidget *parent)
	:QWidget(parent)
{
.
.
}
.
.

Everything worked.
Thanks for bearing with me mitrmkar. I'm still transitioning from Java and I think because of my Java mindset I figured since I'd already declared the variable outside of the constructor, the only place to define it now would be in the constructor.

You need to #include the respective header file in interpotcntrlparams.cpp.

Yea I did do that.
interpotcntrlparams.cpp

//interpotcntrlparams.cpp
#include "interpotcntrlparams.h"
#include "surfcntrlparams.h"
#include "funccntrlparams.h"
.
.
.

And I still get the error:

net/home/f07/xxx/workspace/tramontoGUI/interpotcntrlparams.cpp:48: undefined reference to `FuncCntrlParams::type_pairPotList'

I can't do that. I have to define it in the header file or else I get this error:

net/home/f07/xxx/workspace/tramontoGUI/interpotcntrlparams.cpp:48: undefined reference to `FuncCntrlParams::type_pairPotList'

Yea, I already have those in the .h file. I tried something new though. I took the reference to type_pairPotList out of interpotcntrlparams.cpp and I still got the error. This time it was this:

debug/mymetawindow.o: In function `qt_noop()':
/home/f07/xxx/QT/include/QtCore/qglobal.h:1425: multiple definition of `FuncCntrlParams::type_pairPotList'
make[1]: Leaving directory `/net/home/f07/xxx/workspace/tramontoGUI'
debug/funccntrlparams.o:/home/f07/xxxx/QT/include/QtCore/qglobal.h:1425: first defined here
debug/moc_funccntrlparams.o: In function `qt_noop()':
/home/f07/xxx/QT/include/QtCore/qglobal.h:1425: multiple definition of `FuncCntrlParams::type_pairPotList'
debug/funccntrlparams.o:/home/f07/xxx/QT/include/QtCore/qglobal.h:1425: first defined here

So it would seem like the problem is squarely located in my funcctnrlparams.h file. Here's that file with a little more detail:

#ifndef FUNCCNTRLPARAMS_H_
#define FUNCCNTRLPARAMS_H_

#include <QWidget>
#include <QStringList>
class FuncCntrlParams : public QWidget
{
	Q_OBJECT
	
public:
	/**
	 * Constructs a new FuncCntrlParams QWidget.
	 */
	FuncCntrlParams(QWidget *parent=0);
	static QStringList type_pairPotList;
};

QStringList FuncCntrlParams::type_pairPotList = QStringList() << "Pair LJ12-6 CS" << "Pair Coulomb CS" << "Pair Coulomb" << "Pair Yukawa CS";
#endif /*FUNCCNTRLPARAMS_H_*/

I keep getting this error:

debug/moc_funccntrlparams.o: In function `qt_noop()':
/home/f07/xxx/QT/include/QtCore/qglobal.h:1425: multiple definition of `FuncCntrlParams::type_pairPotList'
debug/interpotcntrlparams.o:/net/home/f07/xxx/workspace/tramontoGUI/interpotcntrlparams.cpp:95: first defined here

But I'm not defining type_pairPotList any where in the interpotcntrlparams.cpp file. This is what my code looks like at line 95 in interpotcntrlparams.cpp.

#include "funccntrlparams.h"
.
.
//line 91
void InterPotCntrlParams::surfUpdate(int newSurfNum)
{
	confIpot_wf_nLayout(newSurfNum);
}

The only place i ever reference type_pairPotList in interpotcntrlparams.cpp is here:

void InterPotCntrlParams::confIpot_wf_nLayout(int newNumOfSurfaces)
{
.
.
for(int i=ipot_wf_nComboVector->size(); i<newNumOfSurfaces; i++)
		{
			surfNumCombo->addItem(QString("Surface %1").arg(i+1));

			ipot_wf_nComboVector->push_back(new QComboBox());
			(ipot_wf_nComboVector->back())->addItems(FuncCntrlParams::type_pairPotList);
			ipot_wf_nGrid->addWidget(ipot_wf_nComboVector->back(),0,1);
			ipot_wf_nComboVector->back()->hide();
		}
.
.
}

This is where I actually declare and define type_pairPotList:

//funccntrlparams.h
.
.
.
class FuncCntrlParams : public QWidget
{
	Q_OBJECT
	
public:
	/**
	 * Constructs a new FuncCntrlParams QWidget.
	 */
	FuncCntrlParams(QWidget *parent=0);
	static QStringList type_pairPotList;
};

QStringList FuncCntrlParams::type_pairPotList = QStringList() << "Pair LJ12-6 CS" << "Pair Coulomb CS" << "Pair Coulomb" << "Pair Yukawa CS";

Does anyone know why I am getting this error?

That seems to do the trick. Everything works now. Much obliged and thanks for the reference.

I"ll preface this with the fact I'm pretty new to C++ (my background is in Java, so having to deal with these pointers is proving to be a little confusing). I'm trying to iterate through a vector that I passed to a function. I can't get this code to work for the life of me. Everything in my program compiles fine except for this one line of code. I keep getting this error:

mymetawindow.cpp: In constructor ‘MyMetaWindow::MyMetaWindow(const std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > >&)’:
mymetawindow.cpp:20: error: conversion from ‘__gnu_cxx::__normal_iterator<const std::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >’ to non-scalar type ‘__gnu_cxx::__normal_iterator<std::basic_string<char, std::char_traits<char>, std::allocator<char> >*, std::vector<std::basic_string<char, std::char_traits<char>, std::allocator<char> >, std::allocator<std::basic_string<char, std::char_traits<char>, std::allocator<char> > > > >’ requested

I have no idea what it means.

#include <QtGui>
#include <QTabWidget>
#include <QLabel>
#include <QString>
#include <iostream>
#include <string>
#include <vector>

#include "mymetawindow.h"

MyMetaWindow::MyMetaWindow(const std::vector<std::string>& tabNames )
{
	fileMenu = menuBar()->addMenu(tr("&File"));
	editMenu = menuBar()->addMenu(tr("&Edit"));
	testLabel = new QLabel(QString(tr("This is a test")));
	testLabel2 = new QLabel(QString(tr("This is a second test")));
	myMetaTab = new QTabWidget();
	setCentralWidget(myMetaTab);
	
	std::vector<std::string>::iterator it = tabNames.begin(); //error in compiling is right here
	
}

Any help would be greatly appreciated.

It works! Excellent! Thank you so much! Solved.

Copy to Clipboard

String newString = oldString.replace("\\","\n");

That kind of works. The problem with it though is that it also replaces instances of "\" with a "\n". I only want instances of "\\" to be replaced with a "\n".

All this regex stuff has me really confused. How could I just replace all the occurrences of "\\" in a string with "\n"?

See this happens though even if I add a tab to the JTabbedPane(). I have made sure to change the background color of the component inside it but the tab itself will not change color. I should have been more clear in my original post. What I'm really looking to do here is to change the color of the Tab.

So for some reason I can't seem to set the background color of a JTabbedPane. This code:

metaTabPane = new JTabbedPane();
metaTabPane.setOpaque(true);
metaTabPane.setBackground(Color.green);

does nothing. The JTabbedPane stays the same grayish-blue default color. What am I doing wrong?

Bummer, I was hoping I wouldn't have to do that. But you're right. It did work. Thanks a bunch!