Linker errors!!

[Seema Rao]

Hi all,

I just wanted to subclass QToolButton, but while building this sample I am getting strange linker errors!!. Can some body explain why this is happening, here is the code I have written,

//toolbutton.h
#ifndef TOOL_BUTTON
#define TOOL_BUTTON

#include <QToolButton>
#include <QEvent>
#include <QMouseEvent>

class ToolButton: public QToolButton
{
Q_OBJECT

public:
ToolButton();

protected:

void mousePressEvent(QMouseEvent *e);
void enterEvent(QEvent * e);
void leaveEvent(QEvent * e);

};
#endif

//toolbutton.cpp
#include "toolbutton.h"

ToolButton::ToolButton(){}

void ToolButton::enterEvent(QEvent * e)
{

}
void QToolButton::mousePressEvent(QMouseEvent *e)
{

}
void QToolButton::leaveEvent(QEvent *e)
{


}

//main.cpp
#include <QtGui>
#include "toolbutton.h"

int main(int argc,char *argv[])
{
QApplication myapp(argc,argv);
QWidget *wid= new QWidget;

ToolButton *mybutton = new ToolButton;
ToolButton *mybutton1 = new ToolButton;
mybutton1->setAutoRaise(1);
mybutton->setAutoRaise(1);
QHBoxLayout *layout= new QHBoxLayout;
layout->addWidget(mybutton);
mybutton->setToolTip("hi this is button");
layout->addWidget(mybutton1);

wid->setLayout(layout);
wid->show();


return myapp.exec();
}


I am using Qt 4.0.1, here is the linker error I got,

/usr/bin/ld: Dwarf Error: Invalid or unhandled FORM value: 14.
/usr/bin/ld: Dwarf Error: Could not find abbrev number 1843.
moc_toolbutton.o(.gnu.linkonce.d._ZTV10ToolButton+ 0x50): undefined reference to `ToolButton::mousePressEvent(QMouseEvent*)'
moc_toolbutton.o(.gnu.linkonce.d._ZTV10ToolButton+ 0x78): undefined reference to `ToolButton::leaveEvent(QEvent*)'
collect2: ld returned 1 exit status
make: *** [toolbutton] Error 1
Can some body please help?

Thanks in Advance,
Seema Rao

[munna]

comment Q_OBJECT and try

[jpn]

void QToolButton::mousePressEvent(QMouseEvent *e)
-> void ToolButton::mousePressEvent(QMouseEvent *e)

void QToolButton::leaveEvent(QEvent *e)
-> void ToolButton::leaveEvent(QEvent *e)

- call base class constructor!
- I also suggest you to get used to a habit of adding parent widget as ctor parameter..