Draw transparent image over the screen with Qt-CodePudding

The

Here's my PyQt6 code, it draws the image fullscreen but sadly you can't see through it, it has a black background:

import sys from PyQt6.QtCore import Qt from PyQt6.QtGui import QImage from PyQt6.QtWidgets import QApplication, QMainWindow from PyQt6.QtGui import QPainter class Img(QMainWindow): def __init__(self, img_path, parent=None): super().__init__(parent) self.qimg = QImage(img_path) self.setStyleSheet('QMainWindow {background:transparent}') self.setWindowFlags( Qt.WindowType.WindowStaysOnTopHint | Qt.WindowType.FramelessWindowHint | Qt.WindowType.WindowTransparentForInput ) self.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground) def paintEvent(self, qpaint_event): painter = QPainter(self) rect = qpaint_event.rect() painter.drawImage(rect, self.qimg) self.showFullScreen() if __name__ == "__main__": app = QApplication(sys.argv) img_path = 'coords.png' window = Img(img_path) window.show() sys.exit(app.exec())

Answers don't need to be PyQt6, perhaps PyQt5 or written in Go.

CodePudding user response：

I have tried your code and it works fine, apparently it seems to be a problem of the image, I recommend you to use some kind of external application to erase the transparent parts like

If you want to do this automatically I recommend you to use opencv.