Python 如何使用with pyqt4将小部件添加到gridlayout的中心
在我的示例程序中,我想将小部件添加到gridlayout的中心。我使用了对齐方法,但不起作用。有人能帮我调整网格布局中心的小部件吗。先谢谢你 下面是我的示例代码:Python 如何使用with pyqt4将小部件添加到gridlayout的中心,python,python-2.7,pyqt,pyqt4,qpushbutton,Python,Python 2.7,Pyqt,Pyqt4,Qpushbutton,在我的示例程序中,我想将小部件添加到gridlayout的中心。我使用了对齐方法,但不起作用。有人能帮我调整网格布局中心的小部件吗。先谢谢你 下面是我的示例代码: import sys from PyQt4 import QtGui,QtCore class Example(QtGui.QWidget): def __init__(self): super(Example, self).__init__() self.initUI() def in
import sys
from PyQt4 import QtGui,QtCore
class Example(QtGui.QWidget):
def __init__(self):
super(Example, self).__init__()
self.initUI()
def initUI(self):
self.grid = QtGui.QGridLayout(self)
self.title_hbox = QtGui.QHBoxLayout()
self.title_hbox.addStretch()
self.close_pushbtn = QtGui.QPushButton("Close")
self.title_hbox.addWidget(self.close_pushbtn)
self.grid.addLayout(self.title_hbox,0,0)
self.line = QtGui.QFrame(frameShape=QtGui.QFrame.HLine)
self.grid.addWidget(self.line,1,0)
self.order_hbox = QtGui.QHBoxLayout()
vbox = QtGui.QVBoxLayout()
label = QtGui.QLabel("address ")
vbox.addWidget(label)
hbox=QtGui.QHBoxLayout()
le =QtGui.QLabel("scroll area")
hbox.addWidget(le)
self.order_hbox.addLayout(vbox)
self.order_hbox.addLayout(hbox)
self.grid.addLayout(self.order_hbox,2,0)
self.addhbox = QtGui.QHBoxLayout()
self.add_btn = QtGui.QPushButton("Add") #@ Add button i want to adjust the center of the gridlayout (its tacking whole length..)
self.addhbox.addWidget(self.add_btn,QtCore.Qt.AlignCenter)
self.grid.addLayout(self.addhbox,3,0)
self.resize(800, 300)
self.show()
def main():
app = QtGui.QApplication(sys.argv)
ex = Example()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
我的添加按钮占据了整个宽度,但我想调整小部件的中间部分您必须更改按钮的QSizePolicy,使其不会水平扩展 不要滥用self,它用于“self”保留引用,但在布局的情况下,在极少数情况下,您可以访问它。另一方面,为了维持秩序,我首先声明了小部件 最后我删除了一些不必要的布局
def initUI(self):
self.close_pushbtn = QtGui.QPushButton(
text="Close",
sizePolicy=QtGui.QSizePolicy(QtGui.QSizePolicy.Maximum, QtGui.QSizePolicy.Maximum)
)
self.line = QtGui.QFrame(frameShape=QtGui.QFrame.HLine)
self.add_btn = QtGui.QPushButton(
text="Add",
sizePolicy=QtGui.QSizePolicy(QtGui.QSizePolicy.Maximum, QtGui.QSizePolicy.Maximum)
)
label = QtGui.QLabel(text="address ")
le = QtGui.QLabel(text="scroll area")
title_hbox = QtGui.QHBoxLayout()
title_hbox.addWidget(self.close_pushbtn, alignment=QtCore.Qt.AlignRight)
order_hbox = QtGui.QHBoxLayout()
order_hbox.addWidget(label)
order_hbox.addWidget(le)
addhbox = QtGui.QHBoxLayout()
addhbox.addWidget(self.add_btn, alignment=QtCore.Qt.AlignCenter)
grid = QtGui.QVBoxLayout(self)
grid.addLayout(title_hbox)
grid.addWidget(self.line)
grid.addLayout(order_hbox)
grid.addLayout(addhbox)
self.resize(800, 300)
self.show()
另一个选项是在每一侧使用拉伸:
def initUI(self):
self.close_pushbtn = QtGui.QPushButton(text="Close")
self.line = QtGui.QFrame(frameShape=QtGui.QFrame.HLine)
self.add_btn = QtGui.QPushButton(text="Add")
label = QtGui.QLabel(text="address ")
le = QtGui.QLabel(text="scroll area")
title_hbox = QtGui.QHBoxLayout()
title_hbox.addStretch()
title_hbox.addWidget(self.close_pushbtn)
order_hbox = QtGui.QHBoxLayout()
order_hbox.addWidget(label)
order_hbox.addWidget(le)
addhbox = QtGui.QHBoxLayout()
addhbox.addStretch()
addhbox.addWidget(self.add_btn)
addhbox.addStretch()
grid = QtGui.QVBoxLayout(self)
grid.addLayout(title_hbox)
grid.addWidget(self.line)
grid.addLayout(order_hbox)
grid.addLayout(addhbox)
self.resize(800, 300)
self.show()
在网格布局中,我应用了相同的逻辑,但它不起作用