I set up the color table as follows: QVector colorTable; QImage * pImg = new QImage( 500, 500, QImage::Format_Indexed8 ); for ( int i = 0. FillRect( 50, 50, 300, 300, QBrush( qRgb( 255, 255, 255 ) ) ); // paint a white square I then save the QImage to a PNG to view it and all I get is a grey image. Mar 15, 2007. Simply call the save() function to save a QImage object. For example: table row o inlineimage qimage-8bit_scaled.png o @code QImage image(3, 3, QImage::Format_Indexed8); QRgb value; value = qRgb(122, 163, 39). Format_Indexed8 The image is stored using 8-bit indexes into a colormap.

Fix another crash when converting format of buffer-created QImage This continues When doing format conversion, the optimized inplace codepath did not check if the image data was external, i.e. If the QImage had been created by the constructor taking an existing external buffer. The previous commit fixed the readonly case. But in the case of the QImage constructor taking non-const uchar*, data will be read-write, but still external. This would of course crash if the converter tries to realloc it.

Task-number: QTBUG-44610 Change-Id: I94d275d464e8af221682b538fc3e4897a59c061e Reviewed-by: Allan Sandfeld Jensen. @@ -716,6 +716,8 @@ static bool convert_BGR30_to_RGB30_inplace(QImageData *data, Qt::ImageConversion static bool convert_indexed8_to_ARGB_PM_inplace ( QImageData * data, Qt:: ImageConversionFlags ) { Q_ASSERT ( data ->format == QImage:: Format_Indexed8 ); if (! Data ->own_data ) return false; const int depth = 32; const int dst_bytes_per_line = (( data ->width * depth + 31 ) >>5 ) format == QImage:: Format_Indexed8 ); if (! Data ->own_data ) return false; const int depth = 32; const int dst_bytes_per_line = (( data ->width * depth + 31 ) >>5 ) format == QImage:: Format_Indexed8 ); if (! Data ->own_data ) return false; const int depth = 16; const int dst_bytes_per_line = (( data ->width * depth + 31 ) >>5 ) format == QImage:: Format_RGB32 ); if (!

Data ->own_data ) return false; const int depth = 16; const int dst_bytes_per_line = (( data ->width * depth + 31 ) >>5 ). Nucor At A Crossroads Pdf Converter.