QTabWidget fill all parent widget

[kaszewczyk]

Hello,
I want to split main window into 2 parts in first one i plan to put QTabWidget, in second i want to draw some things with QPainter, but i found problem with displaying drawing part becous when i created QTabWidget object it take all window space, could someone help me please.

Best Ragards
kaszewczyk

[high_flyer]

Can you show your code?
Did you consider using QSplitter?

[kaszewczyk]

I can't use splitter becouse i have to use layouts and QSplitter dont suport this.

MainWidget

class Window : public QWidget
{
    Q_OBJECT
 
public:
    Window(QWidget *parent = 0);
    ~Window();
 
private:
    QHBoxLayout* mainLay;
    QVBoxLayout* renderLay;
    QVBoxLayout* tabLay;
    QTabWidget* tabWidget;
    RenderArea* topRender;
    RenderArea* bottomRender;
    PageOne* tabPageOne;
    PageTwo* tabPageTwo;
 
};

class Window : public QWidget
{
    Q_OBJECT

public:
    Window(QWidget *parent = 0);
    ~Window();

private:
    QHBoxLayout* mainLay;
    QVBoxLayout* renderLay;
    QVBoxLayout* tabLay;
    QTabWidget* tabWidget;
    RenderArea* topRender;
    RenderArea* bottomRender;
    PageOne* tabPageOne;
    PageTwo* tabPageTwo;

};

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RenderArea

class RenderArea : public QWidget
{
    Q_OBJECT
 
public:
    RenderArea(QWidget* parent = 0);
    virtual ~RenderArea();
 
protected:
    void paintEvent(QPaintEvent* _p);
 
private:
    void paintOscyloCoordSystem(QPainter& __pa, QPen& __pe);
    QString scaleNum;
};

class RenderArea : public QWidget
{
    Q_OBJECT

public:
    RenderArea(QWidget* parent = 0);
    virtual ~RenderArea();

protected:
    void paintEvent(QPaintEvent* _p);

private:
    void paintOscyloCoordSystem(QPainter& __pa, QPen& __pe);
    QString scaleNum;
};

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MainWidget Constructor:

Window::Window(QWidget *parent)
    : QWidget(parent)
{
    mainLay = new QHBoxLayout;
    renderLay = new QVBoxLayout;
    tabLay = new QVBoxLayout;
    tabWidget = new QTabWidget(this);
    topRender = new RenderArea;
    bottomRender = new RenderArea;
    tabPageOne = new PageOne(tabWidget);
    tabPageTwo = new PageTwo(tabWidget);
 
    renderLay->addWidget(topRender);
    renderLay->addWidget(bottomRender);
 
    tabWidget->addTab(tabPageOne, "Strona1");
    tabWidget->addTab(tabPageTwo, "Strona2");
    tabLay->addWidget(tabWidget);
 
    mainLay->addLayout(tabLay);
    mainLay->addLayout(renderLay);
    setLayout(mainLay);
}

Window::Window(QWidget *parent)
    : QWidget(parent)
{
    mainLay = new QHBoxLayout;
    renderLay = new QVBoxLayout;
    tabLay = new QVBoxLayout;
    tabWidget = new QTabWidget(this);
    topRender = new RenderArea;
    bottomRender = new RenderArea;
    tabPageOne = new PageOne(tabWidget);
    tabPageTwo = new PageTwo(tabWidget);

    renderLay->addWidget(topRender);
    renderLay->addWidget(bottomRender);

    tabWidget->addTab(tabPageOne, "Strona1");
    tabWidget->addTab(tabPageTwo, "Strona2");
    tabLay->addWidget(tabWidget);

    mainLay->addLayout(tabLay);
    mainLay->addLayout(renderLay);
    setLayout(mainLay);
}

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I consider to wrap QTabWidget in class inheriting from QWidget then create object of this class in main window and add to layout but i dont know if it's good idea?

[high_flyer]

I can't use splitter becouse i have to use layouts and QSplitter dont suport this.

Can you explain exactly what you mean by that?
Because QSplitter does support layouts (it is a QWidget subclass), unless you mean something that I can't make out from the sentence above..

[kaszewczyk]

Like u see in code above i have main horizontal layout becouse i want to splitt my application in two parts left and right.
In left part i want to put QTabWidget where i will have in each page settings for drawing.
In the right part of window i will have 2 objects of the RenderArea class lay vertically, in them i will do drawing.
So if its allright to do:
maiLay->addWidget(QTabWidget)
mainLay->addLayout(RenderPartLay)
but i cant do this same with splitter cus this class do not have addLayout method right?

[high_flyer]

QSplitter is a QWidget, which has setLayout().
Only layouts have addLayout().
You can have a layout on both sides of the QSplitter.
Read the QSplitter documentation, it is meant exactly for what you want.