PyQt5的学习之路(四)

绝对定位

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QWidget, QApplication, QLabel

class Myform(QWidget):
def __init__(self):
super(Myform, self).__init__()
self.initUI()

def initUI(self):
l1 = QLabel('l1', self)
l1.move(0, 0)

l2 = QLabel('l2', self)
l2.move(40, 40)

l3 = QLabel('l3', self)
l3.move(80, 80)

self.setGeometry(300, 200, 200, 150)
self.setWindowTitle('absolute position')
self.show()

if __name__ == '__main__':
app = QApplication(sys.argv)
w = Myform()
sys.exit(app.exec_())

盒子布局

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QWidget, QApplication, QPushButton, QHBoxLayout, QVBoxLayout

class Myform(QWidget):
def __init__(self):
super(Myform, self).__init__()
self.initUI()

def initUI(self):
ok = QPushButton('OK')
cancel = QPushButton('Cancel')

# 创建一个水平布局
hbox = QHBoxLayout()
hbox.addStretch(1)  # 拉伸因子,会占据多余空间
hbox.addWidget(ok)
hbox.addWidget(cancel)

# 创建一个垂直布局
vbox = QVBoxLayout()
vbox.addLayout(hbox)
vbox.addStretch(1)

# 将水平布局放到垂直布局里
self.setLayout(vbox)

self.setGeometry(300, 300, 300, 200)
self.setWindowTitle('box')
self.show()

if __name__ == '__main__':
app = QApplication(sys.argv)
w = Myform()
sys.exit(app.exec_())

网格布局

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QWidget, QApplication,QPushButton, QGridLayout

class Myform(QWidget):
def __init__(self):
super(Myform, self).__init__()
self.initUI()

def initUI(self):
grid = QGridLayout()   # 创建网格布局
self.setLayout(grid)    # 将网格布局添加到窗口中

btns = ['存储', '取存', '退格', '清屏',
'累存', '积存', '清存', '/',
'7', '8', '9', '*',
'4', '5', '6', '-',
'1', '2', '3', '+',
'0', '.', '+/-', '='
]

positions = [(i, j) for i in range(6) for j in range(4)]

for position, btn in zip(positions, btns):
if btn == '':
pass
btn = QPushButton(btn)
grid.addWidget(btn, *position)

#self.setGeometry(300, 300, 300, 200)
self.move(300, 300)
self.setWindowTitle('grid')
self.show()

if __name__ == '__main__':
app = QApplication(sys.argv)
w = Myform()
sys.exit(app.exec_())

网格布局二

#!/usr/bin/python
# -*- coding: utf-8 -*-

import sys
from PyQt5.QtWidgets import QApplication, QWidget, QLabel, QLineEdit, QTextEdit, QGridLayout

class Myform(QWidget):
def __init__(self):
super(Myform, self).__init__()
self.initUI()

def initUI(self):
title = QLabel('Title')
author = QLabel('Author')
article = QLabel('Article')

titleEdit = QLineEdit()
authorEdit = QLineEdit()
articleEdit = QTextEdit()

grid = QGridLayout()
grid.setSpacing(10)   # 设置组件间的距离

grid.addWidget(title, 1, 0)
grid.addWidget(titleEdit, 1, 1)

grid.addWidget(author, 2, 0)
grid.addWidget(authorEdit, 2, 1)

grid.addWidget(article, 3, 0)
grid.addWidget(articleEdit, 3, 1, 5, 1)

self.setLayout(grid)

self.move(300, 300)
self.setWindowTitle('layout')
self.show()

if __name__ == '__main__':
app = QApplication(sys.argv)
w = Myform()
sys.exit(app.exec_())