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Converting QPixmap to QByteArray/bg: Difference between revisions

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(Convert ExpressionEngine links)
 
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QPixmap pixmap;
QPixmap pixmap;
QByteArray bArray;
QByteArray bArray;
QBuffer buffer( &bArray );
QBuffer buffer( &bArray );
buffer.open( QIODevice::WriteOnly );
buffer.open( QIODevice::WriteOnly );
pixmap.save( &buffer, "PNG" );
pixmap.save( &buffer, "PNG" );
</code>
</code>



Latest revision as of 15:58, 16 March 2015

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Български English

Преобразуване на QPixmap до QByteArray

Това е един от начините за преобразуване на QPixmap до QByteArray.

Удобен е в случайте, когато искате да съхранявате QPixmap в база от данни и т.н.

QPixmap pixmap;
QByteArray bArray;
QBuffer buffer( &bArray );
buffer.open( QIODevice::WriteOnly );
pixmap.save( &buffer, "PNG" );

Сега променливата bArray съдържа изображението като последователност от байтове.

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