Qt4--FormLayout
FormLayout显然对于Form非常适合。
QFormLayout *formLay=new QFormLayout;
QLineEdit *name=new QLineEdit;
QLineEdit *email=new QLineEdit;
QLineEdit *address=new QLineEdit;
formLay->addRow(tr("&Name:"),name);
formLay->addRow(tr("&Email:"),email);
formLay->addRow(tr("&Address:"),address);
setLayout(formLay);
仅需要这些代码就可以显示如下:
formLay->setLabelAlignment(Qt::AlignRight);
formLay->setRowWrapPolicy(QFormLayout::WrapAllRows);(默认的是QFormLayout::DontWrapAllRows)之后变为
另外注意到tr("&Name:"),加这个'&'是什么意思呢,实际上在为一个Label setBuddy时必须加&,在FormLayout中自动把LineEdit设为Label的Buddy了。如果使用其他Layout需要用下面代码显示指定Buddy:
QLineEdit *nameEd = new QLineEdit(this);
QLabel *nameLb = new QLabel("&Name:", this);
nameLb->setBuddy(nameEd);
QLineEdit *phoneEd = new QLineEdit(this);
QLabel *phoneLb = new QLabel("&Phone:", this);
phoneLb->setBuddy(phoneEd);
设置Buddy有神马用呢?当你按Alt+A时Address对应的LineEdit自动获得Focus。
另外只有Label才可以有Buddy
Layout之间可以相互嵌套,Vlayout->addLayout(hLayout);
但是注意FormLayout没有addLayout,只有addChildLayout,并且addChildLayout的访问权限还是protected。
本文来自博客园,作者:高性能golang,转载请注明原文链接:https://www.cnblogs.com/zhangchaoyang/articles/1987767.html