Load new view (.ui) from the previous view

[d_stranz]

Agreed. I think it is a quite dangerous thing to put in the hands of a user who could make changes that destroy an app's GUI.

[das.joyita]

Hi, Thanks for the replies both of you. Sorry, but I am still confused. Not sure how to use QAbstractAnimation:: finished () linking to the hiding of parent view.

QPropertyAnimation *animation = new QPropertyAnimation(parent, QString("windowOpacity").toLatin1());//windowOpacity");
    QPropertyAnimation *animation2 = new QPropertyAnimation(second, QString("windowOpacity").toLatin1());//"windowOpacity");
    animation->setDuration(3000);
    animation2->setDuration(3000);
    animation2->setStartValue(0.0);
    ui->centralWidget->setEnabled(true);
    second->show();
    animation->setStartValue(1.0);
 
    animation->setEndValue(0.0);
    animation2->setEndValue(1.0);

QPropertyAnimation *animation = new QPropertyAnimation(parent, QString("windowOpacity").toLatin1());//windowOpacity");
    QPropertyAnimation *animation2 = new QPropertyAnimation(second, QString("windowOpacity").toLatin1());//"windowOpacity");
    animation->setDuration(3000);
    animation2->setDuration(3000);
    animation2->setStartValue(0.0);
    ui->centralWidget->setEnabled(true);
    second->show();
    animation->setStartValue(1.0);

    animation->setEndValue(0.0);
    animation2->setEndValue(1.0);

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I am doing the above code, but now things are running very quickly and I cant see any animation, only the second view. The first parent view is visible but behind the second view.

[d_stranz]

void MainWindow::dissolve( QWidget * pFadeOut, QWidget * pFadeIn )
{
	QByteArray	opacityProp( QString( "windowOpacity" ).toLatin1() );
	QPropertyAnimation *  pFadeOutAnimation = new QPropertyAnimation( pFadeOut, opacityProp );
	QPropertyAnimation *  pFadeInAnimation  = new QPropertyAnimation( pFadeIn,  opacityProp );
 
	int duration = 3000;
	pFadeOutAnimation->setDuration( duration );
	pDafeOutAnimation->setStartValue( 1.0 );
	pFadeOutAnimation->setEndValue( 0.0 );
 
        // Hide the fade out widget when the animation has stopped
	connect( pFadeOutAnimation, &QPropertyAnimation::finished, pFadeOut, &QWidget::hide );
 
        pFadeInAnimation->setDuration( duration );
	pFadeInAnimation->setStartValue( 0.0 );
	pFadeInAnimation->setEndValue( 1.0 );
 
        // Ensure the fade in widget is showing, but make it invisible by setting opacity to 0
	if ( !pFadeIn->isVisible() )
	{
		pFadeIn->setWindowOpacity( 0.0 );
		pFadeIn->show();
	}
 
	pFadeOutAnimation->start( QAbstractAnimation::DeleteWhenStopped );
	pFadeInAnimation->start( QAbstractAnimation::DeleteWhenStopped );
}

void MainWindow::dissolve( QWidget * pFadeOut, QWidget * pFadeIn )
{
	QByteArray	opacityProp( QString( "windowOpacity" ).toLatin1() );
	QPropertyAnimation *  pFadeOutAnimation = new QPropertyAnimation( pFadeOut, opacityProp );
	QPropertyAnimation *  pFadeInAnimation  = new QPropertyAnimation( pFadeIn,  opacityProp );
	
	int duration = 3000;
	pFadeOutAnimation->setDuration( duration );
	pDafeOutAnimation->setStartValue( 1.0 );
	pFadeOutAnimation->setEndValue( 0.0 );

        // Hide the fade out widget when the animation has stopped
	connect( pFadeOutAnimation, &QPropertyAnimation::finished, pFadeOut, &QWidget::hide );
	
        pFadeInAnimation->setDuration( duration );
	pFadeInAnimation->setStartValue( 0.0 );
	pFadeInAnimation->setEndValue( 1.0 );
	
        // Ensure the fade in widget is showing, but make it invisible by setting opacity to 0
	if ( !pFadeIn->isVisible() )
	{
		pFadeIn->setWindowOpacity( 0.0 );
		pFadeIn->show();
	}
	
	pFadeOutAnimation->start( QAbstractAnimation::DeleteWhenStopped );
	pFadeInAnimation->start( QAbstractAnimation::DeleteWhenStopped );
}

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Not tested, so may require some edits.

[das.joyita]

Thanks so much. Its works beautifully. You are a savior