Another "reuse" question

Anonymous_Banned275

I have a working class declared as QPlainTextEdit.
I like to add "status bar" and was looking to use multiple inheritance using QMainWindow.

Coded as folloows I get an error

/mnt/A_BT_DEC10/BT__PROGRAMS/A_MAR7_MAR15/A_BT_LIBRARY/terminal_Bluetooth/console.h:79: warning: Class Console inherits from two QObject subclasses QPlainTextEdit and QMainWindow. This is not supported!

What would be another logical way to add "status bar" to existing class ?

I am asking this because
"status bar" is part of the QMainWindow and there is no .ui file. It is "added " in code , passed to class. .

#ifndef CONSOLE_H
#define CONSOLE_H

#include <QPlainTextEdit>
#include <QMainWindow>

class Console : public QPlainTextEdit, public QMainWindow
{
    Q_OBJECT

signals:
    void getData(const QByteArray &data);

public:
    explicit Console(QWidget *parent = nullptr);

    void putData(const QByteArray &data);
    void setLocalEchoEnabled(bool set);

protected:
    void keyPressEvent(QKeyEvent *e) override;
    void mousePressEvent(QMouseEvent *e) override;
    void mouseDoubleClickEvent(QMouseEvent *e) override;
    void contextMenuEvent(QContextMenuEvent *e) override;

private:
    bool m_localEchoEnabled = false;
};

#endif // CONSOLE_H

JKSH

@AnneRanch said in Another "reuse" question:

What would be another logical way to add "status bar" to existing class ?

Add a QStatusBar to the bottom

Anonymous_Banned275

@JKSH OK, kindly allow me to "BUMP|".

Here is the "Console" class declaration / definition.
it is derived from QPlainTextEdit
and has NO UI
( no Console.ui ! )

It is NOT related to QMainWindow which has "status bar" as standard.

This class / object is originally "embedded " in QMainWindow , actually in "mdiArea" which does have " status bar " .

I need to have similar class which is no longer part of the original mdiArea, hence I need to add "status bar" to QPlainTextEdit

QPlainTextEdit has "standard " widow title bar, but no status bar !

I was hoping for "multiple inheritance " - adding QMainWindow , but it did not work!

I believe QPlainTextEdit is derived from QWidget...

Console::Console(QWidget *parent) :
    QPlainTextEdit(parent)
{
    document()->setMaximumBlockCount(100);
    // font here ?? document()->set
    QPalette p = palette();
    // test chnage background color
    p.setColor(QPalette::Base, Qt::black);
    p.setColor(QPalette::Text, Qt::white);

    setPalette(p);
    //QStatusBar *pSB = new QStatusBar();
    text = " TEST status tip ..... ";
    setStatusTip(text);
    text = " Console display raw serial ASCII data...";
    setToolTip(text);
    //setstate(" TEST state ");
    //setState(text);

}

Christian Ehrlicher

Simply build a new widget, add a layout and put the QPlainTextEdit and the status bar in there.

Anonymous_Banned275

@Christian-Ehrlicher ...and that is NOT what I expect from C++ " reuse " feature

Here is yet another task.
I can add messages / tool tip...

Adding message into same class,
not a member of the mdiArea,

puts it in the middle of the form
how do I move it to the bottom of the form - using code.?-

Adding message into same class when it is a member of mdiAreaa subwidows puts the message
into main mdiArea status bar when

mouse hovers above the subwindow (status tip ?)

Console::Console(QWidget *parent) :
    QPlainTextEdit(parent)
{
    document()->setMaximumBlockCount(100);
    // font here ?? document()->set
    QPalette p = palette();
    // test change background color
    p.setColor(QPalette::Base, Qt::black);
    p.setColor(QPalette::Text, Qt::white);

    setPalette(p);
    //QStatusBar *pSB = new QStatusBar();
    text = " TEST status tip ..... (shows in mdiArea status bar ) ";
    setStatusTip(text);


this is the only one which does as expected 

    text = " Console display raw serial ASCII data...";
    setToolTip(text);

  **this  message does not show anywhere** 

    QStatusBar *pTEST = new QStatusBar();
    pTEST->showMessage(" TEST status bar message ");
    pTEST->show();

Christian Ehrlicher

@AnneRanch said in Another "reuse" question:

and that is NOT what I expect from C++ " reuse " feature

Then you should find another programming language or another tookit which does what you want instead.

JKSH

@AnneRanch said in Another "reuse" question:

**this message does not show anywhere**

auto pC = new Console; // Original class
auto pSB = new QStatusBar; // Additional status bar

auto layout = new QVBoxLayout;
layout->addWidget(pC);
layout->addWidget(pSB);

auto consoleWithStatusBar = new QWidget;
consoleWithStatusBar->setLayout(layout);
consoleWithStatusBar->show();

pSB->showMessage(" TEST status bar message ");