[SOLVED] QToolButton: not able to enable or disable button in my function

[rizoritis]

Hello,

I am currently trying to enable and disable certain toolbar buttons in my app. I am able to enable and disable them when I am in my constructor for the app, but when I call a separate function to handle this it builds fine, but I get an exception when I try to run it. My code is as follow:

Constructor:
@UI_3::UI_3(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::UI_3)
{
ui->setupUi(this);

/*Create the tool bar and add it to the main window*/
QToolBar *toolBar  = new QToolBar(this);
toolBar->setFloatable(false);   /*Do not allow the toolbar to be undockable*/
toolBar->setMovable(false); /*Do not allow the toolbar to be moved*/
addToolBar(Qt::LeftToolBarArea, toolBar);   /*Add tool bar to the main window*/
/*Create buttons and display icon/tect for each*/
QToolButton *onButton = new QToolButton(toolBar);
onButton->setIcon(QIcon("C:/Qt/Projects/CNCUI_3AXIS/icons/yes.png"));
onButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
onButton->setText("NC On");
QToolButton *offButton = new QToolButton(toolBar);
offButton->setIcon(QIcon("C:/Qt/Projects/CNCUI_3AXIS/icons/no.png"));
offButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
offButton->setText("NC Off");
QToolButton *openFileButton = new QToolButton(toolBar);
openFileButton->setIcon(QIcon("C:/Qt/Projects/CNCUI_3AXIS/icons/directory_open.png"));
openFileButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
openFileButton->setText("Open");
QToolButton *runButton = new QToolButton(toolBar);
runButton->setIcon(QIcon("C:/Qt/Projects/CNCUI_3AXIS/icons/arrow_green.png"));
runButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
runButton->setText("Run");
QToolButton *stopButton = new QToolButton(toolBar);
stopButton->setIcon(QIcon("C:/Qt/Projects/CNCUI_3AXIS/icons/error.png"));
stopButton->setToolButtonStyle(Qt::ToolButtonTextUnderIcon);
stopButton->setText("Stop");
/*Add buttons and separators to toolbar*/
toolBar->addWidget(onButton);
toolBar->addSeparator();
toolBar->addWidget(offButton);
toolBar->addSeparator();
toolBar->addWidget(openFileButton);
toolBar->addSeparator();
toolBar->addWidget(runButton);
toolBar->addSeparator();
toolBar->addWidget(stopButton);

...
onButton->setEnabled(true);
offButton->setEnabled(false);
openFileButton->setEnabled(false);
runButton->setEnabled(false);
stopButton->setEnabled(false);
...
}@

Function that doesnt allow me to disable and enable toolbar buttons:
@void UI_3::setModeFocusFor(MODE_FOCUS mode)
{
switch(mode)
{
case(MANUAL):
/Only enable manual tab/
ui->manualTab->setEnabled(true);
ui->editTab->setEnabled(false);
ui->autoTab->setEnabled(false);
ui->plotTab->setEnabled(false);
ui->mdiTab->setEnabled(false);
/Only enable manual toolbar buttons/
onButton->setEnabled(false);
offButton->setEnabled(true);
openFileButton->setEnabled(false);
runButton->setEnabled(false);
stopButton->setEnabled(false);
break;
case(EDIT):
/Only enable edit tab/
ui->editTab->setEnabled(true);
ui->autoTab->setEnabled(false);
ui->manualTab->setEnabled(false);
ui->plotTab->setEnabled(false);
ui->mdiTab->setEnabled(false);
/Only enable edit toolbar buttons/
onButton->setEnabled(false);
offButton->setEnabled(true);
openFileButton->setEnabled(true);
runButton->setEnabled(false);
stopButton->setEnabled(false);
break;
}
}
@

The exception occurs right at the first onButton->setEnabled(true) call.

The class in the header file is as follows:
@class UI_3 : public QMainWindow
{
Q_OBJECT

public:
explicit UI_3(QWidget *parent = 0);
~UI_3();

private slots:
void on_tabWidget_currentChanged(QWidget *arg1); /Slot for handling tab mode changes/
void setModeFocusFor(MODE_FOCUS mode);
/Slots for handling toolbar button clicks/
void onButton_clicked();
void offButton_clicked();
void openFileButton_clicked();
void runButton_clicked();
void stopButton_clicked();

private:
Ui::UI_3 *ui;
QToolBar *toolBar; /Main window tool bar/
QToolButton *onButton; /Button for turning NC on/
QToolButton *offButton; /Button for turning NC off/
QToolButton *openFileButton; /Button for loading a part program file/
QToolButton *runButton; /Button for running a program/
QToolButton *stopButton; /Button for stopping a program/

};@

Any help would be great. Thanks!

[rizoritis]

I solved the problem. The error was in the following:

@ QToolBar *toolBar = new QToolBar(this);

QToolButton *onButton = new QToolButton(toolBar);
QToolButton *offButton = new QToolButton(toolBar);
QToolButton *openFileButton = new QToolButton(toolBar);
QToolButton *runButton = new QToolButton(toolBar);
QToolButton *stopButton = new QToolButton(toolBar);@

It should be:

@ toolBar = new QToolBar(this);

onButton = new QToolButton(toolBar);
offButton = new QToolButton(toolBar);
openFileButton = new QToolButton(toolBar);
runButton = new QToolButton(toolBar);
stopButton = new QToolButton(toolBar);@

because the pointers were already instantiated in the header file so I was doing it twice by accident and that made it throw an exception.