""" 【简介】 不规则的,可以拖动的窗体实现例子
"""
import sys from PyQt5.QtWidgets import QApplication, QWidget from PyQt5.QtGui import QPixmap, QPainter, QCursor, QBitmap from PyQt5.QtCore import Qt
class ShapeWidget(QWidget): def init(self, parent=None): super(ShapeWidget, self).init(parent) self.setWindowTitle("不规则的,可以拖动的窗体实现例子") self.mypix()
# 显示不规则 pic
def mypix(self):
self.pix = QBitmap("./images/mask.png")
self.resize(self.pix.size())
self.setMask(self.pix)
print(self.pix.size())
self.dragPosition = None
# 重定义鼠标按下响应函数mousePressEvent(QMouseEvent)和鼠标移动响应函数mouseMoveEvent(QMouseEvent),使不规则窗体能响应鼠标事件,随意拖动。
def mousePressEvent(self, event):
if event.button() == Qt.LeftButton:
self.m_drag = True
self.m_DragPosition = event.globalPos() - self.pos()
event.accept()
self.setCursor(QCursor(Qt.OpenHandCursor))
if event.button() == Qt.RightButton:
self.close()
def mouseMoveEvent(self, QMouseEvent):
if Qt.LeftButton and self.m_drag:
# 当左键移动窗体修改偏移值
self.move(QMouseEvent.globalPos() - self.m_DragPosition)
QMouseEvent.accept()
def mouseReleaseEvent(self, QMouseEvent):
self.m_drag = False
self.setCursor(QCursor(Qt.ArrowCursor))
# 一般 paintEvent 在窗体首次绘制加载, 要重新加载paintEvent 需要重新加载窗口使用 self.update() or self.repaint()
def paintEvent(self, event):
painter = QPainter(self)
painter.drawPixmap(0, 0, self.width(), self.height(), QPixmap("./images/boy.png"))
if name == 'main': app = QApplication(sys.argv) form = ShapeWidget() form.show() app.exec_()