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What is the difference bitween Bitmap and Pixmap? 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
What is the difference between QImage and QPixmap? QBitmap is only a convenient QPixmap subclass ensuring a depth of 1, its a monochrome (1-bit depth) pixmap Just like QPixmap , QBitmap is optimized for use of implicit data sharing QPicture is a paint device that records and replays QPainter commands -- your drawing --
python - Creating QPainter object by passing pixmap via . pixmap . . . This is caused by a change in Qt6, which returns a copy of the pixmap, not a pointer to the actual one Due to this, using label pixmap() requires keeping a reference, otherwise it will be destroyed by the garbage collection Just create a temporary variable: pixmap = self label pixmap() and painter = QPainter(pixmap) –
xlib - What is the difference between XYPixmap, ZPixmap, XImage . . . 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
Qt PyQt( Other?): How do I change specific colors in a pixmap? For example, I have a pixmap with white and black pixels, and I want to change all white pixels to blue, but leave the black ones alone Or maybe change the black to white and the white to blue [I am searching for a solution in Qt PyQt, but maybe this is a general question as to how pixmaps are handled composed ]
qt - QPixmap and SVG - Stack Overflow At least with respect to the limited use case of icons, this should now be the accepted answer Note that the QIcon::addFile() method also implicitly accepts SVG files now, permitting each icon mode and state to be associated with its own SVG file
Why QPixmap looks ugly on laptop when DPI is set to 125% I resize the pixmap to fit the QLabel size It looks just fine when DPI is set to 100% But on my laptop, where DPI is set to 125% (to make text bigger, this is the default recommended config on the laptop), the pixmap looks ugly (the lines are blured): In comparison, I set the same png image as icon to a QPushButton and it looks just fine
qt - How to use QPainter on QPixmap - Stack Overflow 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