QWidget in a QGraphicsScene ..!!!

[salmanmanekia]

HI
The below code must show a button in a scene ,but the scene shows a widget in a scene with no button ,it seems as if only a widget is created but widget remains empty...any IDEA !!

class MainScene:public QGraphicsScene
{
public:
	QGraphicsProxyWidget *proxy;
	Navigation *navigate;
	MainScene();
 
	void displayNavigationStatus();
	virtual ~MainScene();
};
 
 
MainScene::MainScene()
{
        navigate =  new Navigation;
	displayNavigationStatus();
}
 
void MainScene::displayNavigationStatus()
{   
	proxy = addWidget(navigate);
}
 
MainScene::~MainScene()
{
}
 
class Navigation:public QWidget
{
 
public:
		Navigation();
		~Navigation();
 
private:
	QSize buttonIconSize; 
 
	QPushButton *backButton ;
 
	void setBackButton();
 
};
 
#include "Navigation.h"
 
Navigation::Navigation()
{
		backButton = new QPushButton();
		setBackButton();
 
}
void Navigation::setBackButton()
{
	backButton->setIcon(QIcon(BACKBUTTON_DIR_LOCATION));
	backButton->setIconSize(buttonIconSize);
    backButton->setGeometry(BACK_BUTTON_X,BACK_BUTTON_Y,BUTTON_PARAM,BUTTON_PARAM);
 
}

class MainScene:public QGraphicsScene
{
public:
	QGraphicsProxyWidget *proxy;
	Navigation *navigate;
	MainScene();
	
	void displayNavigationStatus();
	virtual ~MainScene();
};
 

MainScene::MainScene()
{
        navigate =  new Navigation;
	displayNavigationStatus();
}

void MainScene::displayNavigationStatus()
{   
	proxy = addWidget(navigate);
}

MainScene::~MainScene()
{
}

class Navigation:public QWidget
{

public:
		Navigation();
		~Navigation();
	
private:
	QSize buttonIconSize; 
		
	QPushButton *backButton ;

	void setBackButton();
	
};

#include "Navigation.h"

Navigation::Navigation()
{
		backButton = new QPushButton();
		setBackButton();
	
}
void Navigation::setBackButton()
{
	backButton->setIcon(QIcon(BACKBUTTON_DIR_LOCATION));
	backButton->setIconSize(buttonIconSize);
    backButton->setGeometry(BACK_BUTTON_X,BACK_BUTTON_Y,BUTTON_PARAM,BUTTON_PARAM);

}

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[munna]

try this

backButton = new QPushButton(this);

backButton = new QPushButton(this);

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[salmanmanekia]

No difference..still only the grey screen..

[salmanmanekia]

any help.!!!

[high_flyer]

try calling backButton->show();

[salmanmanekia]

still no difference..!!

[high_flyer]

The below code must show a button in a scene

Your code however suggest a widget in a scene, *in* which a button is located.
If you try to show this widget normally (not in a scene) does the button show then?

[aamer4yu]

Agree with high_flyer

Also in

void Navigation::setBackButton()
{
    backButton->setIcon(QIcon(BACKBUTTON_DIR_LOCATION));
    backButton->setIconSize(buttonIconSize);
    backButton->setGeometry(BACK_BUTTON_X,BACK_BUTTON_Y,BUTTON_PARAM,BUTTON_PARAM);
}

void Navigation::setBackButton()
{
    backButton->setIcon(QIcon(BACKBUTTON_DIR_LOCATION));
    backButton->setIconSize(buttonIconSize);
    backButton->setGeometry(BACK_BUTTON_X,BACK_BUTTON_Y,BUTTON_PARAM,BUTTON_PARAM);
}

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make sure the geometry u set is proper. May be they are not getting initialised properly