PyQt5可拖動無框窗口

Question

我找到了一個在無框窗口上設置邊框的例子，但它不可拖動。我怎樣才能使無框窗口可拖動？特別是如果我能看到一個例子，它會很棒。這是我的示例代碼（通常代碼更長，這就是爲什麼有許多庫只是不介意它們）;

from PyQt5.QtWidgets import (QMessageBox,QApplication, QWidget, QToolTip, QPushButton, 
          QDesktopWidget, QMainWindow, QAction, qApp, QToolBar, QVBoxLayout, 
          QComboBox,QLabel,QLineEdit,QGridLayout,QMenuBar,QMenu,QStatusBar, 
          QTextEdit,QDialog,QFrame,QProgressBar 
          ) 
from PyQt5 import QtCore, QtWidgets, QtGui 
from PyQt5.QtGui import QIcon,QFont,QPixmap,QPalette 
from PyQt5.QtCore import QCoreApplication, Qt,QBasicTimer 

import sys 

class cssden(QMainWindow): 
    def __init__(self): 
     super().__init__() 


     self.mwidget = QMainWindow(self) 
     self.setWindowFlags(QtCore.Qt.FramelessWindowHint) 


     #size 
     self.setFixedSize(320, 450) 
     self.center 


     #label 
     self.lbl = QLabel(self) 
     self.lbl.setText("test") 
     self.lbl.setStyleSheet("background-color: rgb(0,0,0);" 
           "border: 1px solid red;" 
           "color: rgb(255,255,255);" 
           "font: bold italic 20pt 'Times New Roman';") 
     self.lbl.setGeometry(5,5,60,40) 

     self.show() 

    #center 
    def center(self): 
     qr = self.frameGeometry() 
     cp = QDesktopWidget().availableGeometry().center() 
     qr.moveCenter(cp) 
     self.move(qr.topLeft()) 

app = QApplication(sys.argv) 
app.setStyleSheet("QMainWindow{background-color: darkgray;border: 1px solid black}") 

ex = cssden() 
sys.exit(app.exec_()) 

Answer 1

您需要自己處理鼠標事件。

• 我們需要在mousePressEvent添加事件，這將讓我們最後的窗口中點擊
• 然後的地方，我們將添加一個mouseMoveEvent，這將計算最後單擊點之間的距離，當前的鼠標位置。我們將根據這個距離移動窗口。

這是固定的代碼：

from PyQt5.QtWidgets import (QMessageBox,QApplication, QWidget, QToolTip, QPushButton, 
          QDesktopWidget, QMainWindow, QAction, qApp, QToolBar, QVBoxLayout, 
          QComboBox,QLabel,QLineEdit,QGridLayout,QMenuBar,QMenu,QStatusBar, 
          QTextEdit,QDialog,QFrame,QProgressBar 
          ) 
from PyQt5 import QtCore, QtWidgets, QtGui 
from PyQt5.QtGui import QIcon,QFont,QPixmap,QPalette 
from PyQt5.QtCore import QCoreApplication, Qt,QBasicTimer, QPoint 

import sys 

class cssden(QMainWindow): 
    def __init__(self): 
     super().__init__() 


     self.mwidget = QMainWindow(self) 
     self.setWindowFlags(QtCore.Qt.FramelessWindowHint) 


     #size 
     self.setFixedSize(320, 450) 
     self.center() 


     #label 
     self.lbl = QLabel(self) 
     self.lbl.setText("test") 
     self.lbl.setStyleSheet("background-color: rgb(0,0,0);" 
           "border: 1px solid red;" 
           "color: rgb(255,255,255);" 
           "font: bold italic 20pt 'Times New Roman';") 
     self.lbl.setGeometry(5,5,60,40) 

     self.oldPos = self.pos() 

     self.show() 

    #center 
    def center(self): 
     qr = self.frameGeometry() 
     cp = QDesktopWidget().availableGeometry().center() 
     qr.moveCenter(cp) 
     self.move(qr.topLeft()) 

    def mousePressEvent(self, event): 
     self.oldPos = event.globalPos() 

    def mouseMoveEvent(self, event): 
     delta = QPoint (event.globalPos() - self.oldPos) 
     #print(delta) 
     self.move(self.x() + delta.x(), self.y() + delta.y()) 
     self.oldPos = event.globalPos() 

app = QApplication(sys.argv) 
app.setStyleSheet("QMainWindow{background-color: darkgray;border: 1px solid black}") 

ex = cssden() 
sys.exit(app.exec_())