14.网格布局

运行效果

关键代码:

• dialog.h

  #ifndef DIALOG_H
  #define DIALOG_H
  
  #include <QDialog>
  #include <QTextEdit>
  #include <QComboBox>
  #include <QLineEdit>
  #include <QGridLayout>
  #include <QPushButton>
  
  namespace Ui {
  class Dialog;
  }
  
  class Dialog : public QDialog
  {
      Q_OBJECT
  
  public:
      explicit Dialog(QWidget *parent = 0);
      ~Dialog();
  
  private:
      Ui::Dialog *ui;
      QPushButton ***ppp;
  };
  
  #endif // DIALOG_H

• dialog.cpp

  #include "dialog.h"
  #include "ui_dialog.h"
   3 #include <QGridLayout>
  
  Dialog::Dialog(QWidget *parent) :
      QDialog(parent),
      ui(new Ui::Dialog)
  {
      ui->setupUi(this);
  
      QGridLayout *mainl = new QGridLayout(this);
  
      ppp = new QPushButton** [5];
  
      for(int i=0;i<5;i++)
      {
          ppp[i] = new QPushButton*[4];
          for(int j=0;j<4;j++)
          {
              ppp[i][j] = new QPushButton(this);
              ppp[i][j]->resize(50,50);
              QString str;
              str.sprintf("%d%d",i,j);
              ppp[i][j]->setText(str);
              mainl->addWidget(ppp[i][j],i,j);
          }
      }
  }
  
  Dialog::~Dialog()
  {
      delete ui;
  }