background color of a MainWindow

[sabeesh]

Hi,
How can I set the background color as black of a MainWindow? Please help me!!!!!!!!!
Sabeesh

[ufo-vl]

This code generated from Qt Designer,

QPalette palette;
    QBrush brush(QColor(255, 255, 255, 255));
    brush.setStyle(Qt::SolidPattern);
    palette.setBrush(QPalette::Active, QPalette::Base, brush);
    QBrush brush1(QColor(0, 0, 0, 255));
    brush1.setStyle(Qt::SolidPattern);
    palette.setBrush(QPalette::Active, QPalette::Window, brush1);
    palette.setBrush(QPalette::Inactive, QPalette::Base, brush);
    palette.setBrush(QPalette::Inactive, QPalette::Window, brush1);
    palette.setBrush(QPalette::Disabled, QPalette::Base, brush1);
    palette.setBrush(QPalette::Disabled, QPalette::Window, brush1);
    Dialog->setPalette(palette);

QPalette palette;
    QBrush brush(QColor(255, 255, 255, 255));
    brush.setStyle(Qt::SolidPattern);
    palette.setBrush(QPalette::Active, QPalette::Base, brush);
    QBrush brush1(QColor(0, 0, 0, 255));
    brush1.setStyle(Qt::SolidPattern);
    palette.setBrush(QPalette::Active, QPalette::Window, brush1);
    palette.setBrush(QPalette::Inactive, QPalette::Base, brush);
    palette.setBrush(QPalette::Inactive, QPalette::Window, brush1);
    palette.setBrush(QPalette::Disabled, QPalette::Base, brush1);
    palette.setBrush(QPalette::Disabled, QPalette::Window, brush1);
    Dialog->setPalette(palette);

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Dialog - it's your MainWindow.

I think, this code is possible to optimize.

[rajesh]

try this in your mainwindow class constructor:
tested code:

QPalette palette; 
palette.setColor(backgroundRole(), Qt::black); 
setPalette(palette);

QPalette palette; 
palette.setColor(backgroundRole(), Qt::black); 
setPalette(palette);

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[sabeesh]

Hi,
Thankyou
it's working

Sabeesh