import sys
from PyQt5.QtWidgets import QApplication ,QWidget ,QFormLayout , QLineEdit, QLabel
class Winform(QWidget):
  def __init__(self,parent=None):
    super(Winform,self).__init__(parent)
    self.setWindowTitle("窗体布局管理例子") 
    self.resize(400, 100) 
    fromlayout = QFormLayout()
    labl1 = QLabel("标签1")
    lineEdit1 = QLineEdit()
    labl2 = QLabel("标签2")
    lineEdit2 = QLineEdit()
    labl3 = QLabel("标签3")
    lineEdit3 = QLineEdit()
    fromlayout.addRow(labl1, lineEdit1)
    fromlayout.addRow(labl2, lineEdit2)
    fromlayout.addRow(labl3, lineEdit3)
    //fromlayout->setRowWrapPolicy(QFormLayout::WrapLongRows);//该参数通常适用于小屏幕中，当标签和文本框在本行显示不全时，文本框会显示在下一行，使得标签独占一行
    fromlayout->setLabelAlignment(Qt::AlignLeft);//设置标签的对齐方式
    self.setLayout(fromlayout)  
if __name__ == "__main__": 
    app = QApplication(sys.argv) 
    form = Winform()
    form.show()
    sys.exit(app.exec_())

QFormLayout* layout = new QFormLayout();//顶级布局管理器
QVBoxLayout* vlayout = new QVBoxLayout();//被嵌套使用的布局管理器
QLineEdit* text1 = new QLineEdit();
QLineEdit* text2 = new QLineEdit();
QLineEdit* text3 = new QLineEdit();
vlayout->addWidget(text2);//子管理器布局
vlayout->addWidget(text3);
layout->addRow("Name:",text1);//往QFormLayout中添加表项
layout->addRow("Tel:",vlayout);
layout->setSpacing(10);
setLayout(layout);//设置顶级布局管理器
this->setWindowTitle("FTP");