2011年9月13日 · A pixmap stores and displays a graphical image as a rectangular array of pixel color values. while a pixmap that uses only a single bit to denote the color of each pixel is often referred to as a bitmap. Bitmap is also sometimes used to refer to any pixmap. Reference. Look at here to read more about PixMap. File extensions. bitmap is .BMP

2017年11月30日 · QPixmap is an "image object" whose pixel representation are of no consequence in your code, Thus QPixmap is designed and optimized for rendering images on display screen, it is stored on the XServer when using X11, thus drawing QPixmap on XWindow is much faster than drawing QImages, as the data is already on the server, and ready to use.

2015年2月4日 · From the X11 protocol specification: The data for a pixmap is said to be in XY format if it is organized as a set of bitmaps representing individual bit planes, with the planes appearing from most-significant to least-significant in bit order.

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

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 you need to destroy QPainter before you use the pixmap to ensure that all changes will be written to the pixmap and to avoid memory leak.

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 add the image to that resource file. To create a Qt Resource File, we go to the menus: File > Qt > Qt Resource File. we can set the image of the QLabel using Qt Creator...

2017年10月13日 · I have an image that contains tiles. I want to make a QPixmap of each tile within the QPixmap. I thought QPixmap's copy(x,y,width,height) method would do this for me, but must be copying the entire

2016年12月30日 · pixmap = QPixMap(r'C:\filename.jpeg') The documentation what you are referring to is the way you would load a Qt resource. One can convert an image that is needed by the application to a Qt resource so as to load it in a platform independent manner.

2012年2月19日 · Return type of this function is QPixmap, so it returns a scaled copy of the original pixmap. Then you need a width and a height, describing the (maximum) final size of the pixmap. Two more optional parameters. aspectRatioMode deals with the, well aspect ratio. The documentation details the different options and their effects.

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.