Image Viewer Example
Basic Drawing Example
QT5 TUTORIAL MAINWINDOW AND IMAGEVIEWER USING CREATOR – PART A – 2020
QT5 TUTORIAL MAINWINDOW AND IMAGEVIEWER USING CREATOR – PART B – 2020
QT drawing a circle [duplicate]
What is the difference between QImage and QPixmap?
Diff between QImage, QPixmap, QPicture
- Qt provides four classes for handling image data: QImage, QPixmap, QBitmap and QPicture. QImage is designed and optimized for I/O, and for direct pixel access and manipulation, while QPixmap is designed and optimized for showing images on screen. QBitmap is only a convenience class that inherits QPixmap, ensuring a depth of 1. Finally, the QPicture class is a paint device that records and replays QPainter commands.
- QImage: Fast to draw to, slow to display.
QPixmap: Slow to draw to, fast to display.
Qt5 C++ Drawing Ellipse (QPainter, QPen, QBrush) In Qt #26