PyQt5 QSpinBox - Setting Style Strategy

PyQt5 QSpinBox - Setting Style Strategy

In PyQt5, the QFont object associated with any widget, including QSpinBox, has a method called setStyleStrategy() which allows you to specify how Qt should select a font to match a given request.

QFont.StyleStrategy is an enumeration that provides the following flags:

  1. QFont.PreferDefault: Prefers the default font matching algorithm.
  2. QFont.PreferBitmap: Prefers bitmap fonts (as opposed to outline fonts).
  3. QFont.PreferDevice: Prefers to use device fonts.
  4. QFont.PreferOutline: Prefers outline fonts.
  5. QFont.ForceOutline: Forces the use of an outline font.
  6. QFont.PreferMatch: Prefers a font that matches the exact attributes set in the font.
  7. QFont.PreferQuality: Prefers a quality font, even if it means sacrificing some attributes.
  8. QFont.PreferAntialias: Prefers an antialiased font.
  9. QFont.NoAntialias: Do not antialias the font.
  10. QFont.NoSubpixelAntialias: Disables subpixel antialiasing.

You can use these flags (possibly in combination) to adjust the font style strategy of a QSpinBox or any other widget.

Here's an example of how to set the style strategy for a QSpinBox:

import sys from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QSpinBox from PyQt5.QtGui import QFont class SpinBoxApp(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): layout = QVBoxLayout() self.spinBox = QSpinBox(self) # Get the current font of the spin box font = self.spinBox.font() # Set the style strategy font.setStyleStrategy(QFont.PreferAntialias | QFont.PreferQuality) # Apply the modified font back to the spin box self.spinBox.setFont(font) layout.addWidget(self.spinBox) self.setLayout(layout) self.setGeometry(100, 100, 300, 200) self.show() if __name__ == '__main__': app = QApplication(sys.argv) ex = SpinBoxApp() sys.exit(app.exec_())

In the above code, the QFont.PreferAntialias and QFont.PreferQuality flags are combined using the bitwise OR (|) operator to prefer both antialiasing and font quality for the QSpinBox.

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