When you add a pixmap to a scene using addPixmap, only the current pixmap is used. Further changes will not affect the scene. So you should call addPixmap after you make changes. Also …

2012年2月19日 · QPixmap QPixmap.scaled (self, int width, int height, Qt.AspectRatioMode aspectRatioMode = Qt.IgnoreAspectRatio, Qt.TransformationMode transformMode = …

2013年4月10日 · The Widget we should use to show pictures is a QLabel. we can do it directly from QtCreator, by setting its pixmap property. we should first create a resource file and then …

2010年6月29日 · I want to set an image on QPushButton, and the size of QPushButton should depend on the size of the image. I am able to do this when using QLabel, but not with …

2016年12月16日 · I am write a paint program. pix = QPixmap(600,500); // set size to 600X500 How to change size after this? Someting like: pix.setSize(800,600); // Change size to 800X

2012年6月12日 · QPixmap pixmap(<image path>); QByteArray bytes; QBuffer buffer(&bytes); buffer.open(QIODevice::WriteOnly); pixmap.save(&buffer, "PNG"); // writes pixmap into bytes …

2017年11月30日 · There is a nice series of articles at Qt Labs that explains a lot about the Qt graphics system. This article in particular has a section on QImage vs. QPixmap. Here's a …

2016年5月12日 · How would you suggest to handle svg with QPixmap? The construct QPixmap(":/myfile.svg"); then call of scaled() does not work. The QPixmap gets pixelised. Thx.

2016年7月12日 · Hi all, I wonder if there is a way to display a QPixmap/QImage in QML with a Image instance? Like this: Item { Image { id: preview anchor...

2015年4月1日 · I have some problems with drawing image on QWidget with QPainter from resources. I'm sure I'm missing something but I really dont know what. If I use absolute path, it …