Qt学习——布局管理器QLayout类

最近感觉没有那么多时间在网上写学习笔记了。还是自己在本子上手写吧。这里只贴上代码和截图记录自己的学习历程。

常用的布局管理有QVBoxLayout，QHBoxLayout，QGridLayout。

下面是综合应用：

新建Qt Gui程序，基类为Dialog

头文件：

#ifndef DIALOG_H#define DIALOG_H#include <QtGui/QDialog>#include <QLabel>#include <QLineEdit>#include <QTextEdit>#include <QComboBox>#include <QGridLayout>#include <QPushButton>#include <QHBoxLayout>#include <QVBoxLayout>class Dialog : public QDialog{    Q_OBJECTpublic:    Dialog(QWidget *parent = 0);    ~Dialog();private:    //左侧的控件    QLabel *UserLabel;    QLabel *NameLabel;    QLabel *SexLabel;    QLabel *DepartLabel;    QLabel *AgeLabel;    QLabel *OtherLabel;    QLineEdit *UserLineEdit;    QLineEdit *NameLineEdit;    QComboBox *SexComboBox;    QTextEdit *DepartTextEdit;    QLineEdit *AgeLineEdit;    QGridLayout *LeftGridLayout;    //右上角    QLabel *HeadLabel;    QLabel *HeadIconLabel;    QPushButton *UpdateHeadBtn;    QHBoxLayout *RightTopHBLayout;    //右下角    QLabel *IntroLabel;    QTextEdit *IntroTextEdit;    QVBoxLayout *RightVBLayout;    //底部    QPushButton *OkBtn;    QPushButton *CancelBtn;    QHBoxLayout *ButtomHBLayout;};#endif // DIALOG_H

源文件：

#include "dialog.h"Dialog::Dialog(QWidget *parent)    : QDialog(parent){    //××××××××××××初始化×××××××××××××××    setWindowTitle(tr("UserInfo"));    UserLabel=new QLabel(tr("用户名："));    UserLineEdit=new QLineEdit;    NameLabel=new QLabel(tr("姓名："));    NameLineEdit=new QLineEdit;    SexLabel=new QLabel(tr("性别："));    SexComboBox=new QComboBox;    SexComboBox->addItem(tr("男"));    SexComboBox->addItem(tr("女"));    DepartLabel=new QLabel(tr("部门"));    DepartTextEdit=new QTextEdit;    AgeLabel=new QLabel(tr("年龄"));    AgeLineEdit=new QLineEdit;    OtherLabel=new QLabel(tr("备注"));    OtherLabel->setFrameStyle(QFrame::Panel|QFrame::Sunken);    //××××××××××××添加左侧××××××××××××××    LeftGridLayout=new QGridLayout();    LeftGridLayout->addWidget(UserLabel,0,0);    LeftGridLayout->addWidget(UserLineEdit,0,1);    LeftGridLayout->addWidget(NameLabel,1,0);    LeftGridLayout->addWidget(NameLineEdit,1,1);    LeftGridLayout->addWidget(SexLabel,2,0);    LeftGridLayout->addWidget(SexComboBox,2,1);    LeftGridLayout->addWidget(DepartLabel,3,0);    LeftGridLayout->addWidget(DepartTextEdit,3,1);    LeftGridLayout->addWidget(AgeLabel,4,0);    LeftGridLayout->addWidget(AgeLineEdit,4,1);    LeftGridLayout->addWidget(OtherLabel,5,0,1,2);    LeftGridLayout->setColumnStretch(0,1);    LeftGridLayout->setColumnStretch(1,3);    //×××××××××××××添加右上角×××××××××××××××    HeadLabel=new QLabel(tr("头像："));    HeadIconLabel=new QLabel;    QPixmap icon("1.bmp");    HeadIconLabel->setPixmap(icon);    HeadIconLabel->resize(icon.width(),icon.height());    UpdateHeadBtn=new QPushButton(tr("更新"));    RightTopHBLayout=new QHBoxLayout;    RightTopHBLayout->setSpacing(20);    RightTopHBLayout->addWidget(HeadLabel);    RightTopHBLayout->addWidget(HeadIconLabel);    RightTopHBLayout->addWidget(UpdateHeadBtn);    //×××××××××××××添加右下角×××××××××××××××    IntroLabel=new QLabel(tr("个人说明："));    IntroTextEdit=new QTextEdit;    RightVBLayout=new QVBoxLayout();    RightVBLayout->setMargin(10);    RightVBLayout->addLayout(RightTopHBLayout);    RightVBLayout->addWidget(IntroLabel);    RightVBLayout->addWidget(IntroTextEdit);    //×××××××××××××添加底部×××××××××××××××    OkBtn=new QPushButton(tr("确定"));    CancelBtn=new QPushButton(tr("取消"));    ButtomHBLayout=new QHBoxLayout();    ButtomHBLayout->addStretch();    ButtomHBLayout->addWidget(OkBtn);    ButtomHBLayout->addWidget(CancelBtn);    //×××××××××××××设置主窗体×××××××××××××××    QGridLayout *mainLayout=new QGridLayout(this);    mainLayout->setMargin(15);    mainLayout->setSpacing(10);    mainLayout->addLayout(LeftGridLayout,0,0);    mainLayout->addLayout(RightVBLayout,0,1);    mainLayout->addLayout(ButtomHBLayout,1,0,1,2);    mainLayout->setSizeConstraint(QLayout::SetFixedSize);    connect(OkBtn,SIGNAL(clicked()),this,SLOT(accept()));    connect(CancelBtn,SIGNAL(clicked()),this,SLOT(reject()));}Dialog::~Dialog(){}