利用setSizeConstraint(QLayout::SetFixedSize)方法使对话框尺寸保持相对固定（有控件决定），不能经过拖动改变大小。
extension.h
- #ifndef EXTENSION_H
- #define EXTENSION_H
- #include <QtGui/QDialog>
- #include <QWidget>
- class Extension : public QDialog
- {
- Q_OBJECT
- public:
- Extension(QWidget *parent = 0, Qt::WFlags flags = 0);
- ~Extension();
- void createBaseInfo();
- void createDetaiInfo();
- private:
- QWidget *baseWidget;
- QWidget *detaiWidget;
- public slots:
- void sl_Extension();
- };
- #endif // EXTENSION_H
extension.cpp
- #include "extension.h"
- #include <QVBoxLayout>
- #include <QGridLayout>
- #include <QLabel>
- #include <QLineEdit>
- #include <QComboBox>
- #include <QPushButton>
- Extension::Extension(QWidget *parent, Qt::WFlags flags)
- : QDialog(parent, flags)
- {
- setWindowTitle(tr("Extension Dialog"));
- createBaseInfo();
- createDetaiInfo();
- QVBoxLayout *mainLayout = new QVBoxLayout(this);
- mainLayout->addWidget(baseWidget);
- mainLayout->addWidget(detaiWidget);
- mainLayout->setSpacing(10);
- mainLayout->setSizeConstraint(QLayout::SetFixedSize);
- }
- Extension::~Extension()
- {
- }
- void Extension::createBaseInfo()
- {
- baseWidget = new QWidget;
- QLabel *labName = new QLabel(tr("Name:"));
- QLabel *labSex = new QLabel(tr("Sex:"));
- QLineEdit *edtName = new QLineEdit;
- QComboBox *cbbSex = new QComboBox;
- cbbSex->insertItem(0,tr("male"));
- cbbSex->insertItem(1,tr("female"));
- QPushButton *btnOk = new QPushButton(tr("Ok"));
- QPushButton *btnDetai = new QPushButton(tr("Detai"));
- connect(btnDetai,SIGNAL(clicked()),this,SLOT(sl_Extension()));
- QGridLayout *baseLayout = new QGridLayout(baseWidget);
- baseLayout->addWidget(labName,0,0);
- baseLayout->addWidget(edtName,0,1);
- baseLayout->addWidget(btnOk,0,2);
- baseLayout->addWidget(labSex,1,0);
- baseLayout->addWidget(cbbSex,1,1);
- baseLayout->addWidget(btnDetai,1,2);
- baseLayout->setMargin(10);
- baseLayout->setSpacing(10);
- }
- void Extension::createDetaiInfo()
- {
- detaiWidget = new QWidget;
- QLabel *labAge = new QLabel(tr("Age:"));
- QLabel *labDepartment = new QLabel(tr("Department:"));
- QLabel *labEmail = new QLabel(tr("Email:"));
- QLineEdit *edtAge = new QLineEdit;
- QComboBox *cbbDepartment = new QComboBox;
- cbbDepartment->insertItem(0,tr("Department 1"));
- cbbDepartment->insertItem(1,tr("Department 2"));
- cbbDepartment->insertItem(2,tr("Department 3"));
- QLineEdit *edtEmail = new QLineEdit;
- QGridLayout *detaiLayout = new QGridLayout(detaiWidget);
- detaiLayout->addWidget(labAge,0,0);
- detaiLayout->addWidget(labDepartment,1,0);
- detaiLayout->addWidget(labEmail,2,0);
- detaiLayout->addWidget(edtAge,0,1);
- detaiLayout->addWidget(cbbDepartment,1,1);
- detaiLayout->addWidget(edtEmail,2,1);
- detaiLayout->setMargin(10);
- detaiLayout->setSpacing(10);
- detaiWidget->hide();
- }
- void Extension::sl_Extension()
- {
- if (detaiWidget->isHidden())
- {
- detaiWidget->show();
- }
- else
- {
- detaiWidget->hide();
- }
- }