基本上我正试图在我的无框窗口周围画一个边框。它的大小是550和407.我创建我的QPainter然后我的线条,最后我试图绘制它们。
def draw_border(self):
painter = QPainter()
painter.begin(self)
pen = QPen(QColor(255, 1, 1))
painter.setPen(pen)
left = QLine(0, 0, 0, 407)
bottom = QLine(0, 407, 550, 407)
right = QLine(550, 407, 550, 0)
painter.drawLine(left)
painter.drawLine(bottom)
painter.drawLine(right)
painter.end()
我希望有三条线:左,右和底,但没有任何反应。
我不知道错误在哪里,因为你没有提供MCVE,所以我只提出我的解决方案,即重用widget的rect(),这样行将适应窗口的大小:
from PySide2 import QtGui, QtCore, QtWidgets
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Widget, self).__init__(parent)
self.setWindowFlags(self.windowFlags() | QtCore.Qt.FramelessWindowHint)
def paintEvent(self, event):
painter = QtGui.QPainter(self)
pen = QtGui.QPen(QtGui.QColor(255, 1, 1))
painter.setPen(pen)
width = pen.width()
rect = self.rect().adjusted(0, -width, -width, -width)
painter.drawRect(rect)
if __name__ == "__main__":
import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.resize(550, 407)
w.show()
sys.exit(app.exec_())