QT中设置窗口随父窗口大小变化而变化-窗口按比例显示

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1. QTreeWidget *pTreeWidget = new QTreeWidget(this);//此窗口大小变化时有最大和最小值   
   
2. QTableWidget *pTableWidget = new QTableWidget(this);//此窗口占据剩余的位置
   
3.     QHBoxLayout *pLayout = new QHBoxLayout();  
   
4.   pLayout->addWidget(pTreeWidget);  
   
5.   pLayout->addWidget(pTableWidget);   
   
6. pLayout->setSpacing(10);   
   
7. pLayout->setContentsMargins(10, 10, 10, 10);
   
8.     setLayout(pLayout);
   
9.     // 获取大小策略  
   
10.   QSizePolicy treeSizePolicy = pTreeWidget->sizePolicy();
    
11.    QSizePolicy tableSizePolicy = pTableWidget->sizePolicy();
    
12.     //treeSizePolicy.setHorizontalPolicy(QSizePolicy::Maximum);  
    
13.   pTreeWidget->setMinimumWidth(100);   
    
14. pTreeWidget->setMaximumWidth(500);   
    
15. pTreeWidget->setSizePolicy(treeSizePolicy);
    
16.    tableSizePolicy.setHorizontalPolicy(QSizePolicy::Expanding);   
    
17. pTableWidget->setSizePolicy(tableSizePolicy);

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admin

设置左侧窗口是右侧窗口的两倍：

1.     QTreeWidget *pTreeWidget = new QTreeWidget(this);
   
2.     QTableWidget *pTableWidget = new QTableWidget(this);
   
3. 
   
4.     QHBoxLayout *pLayout = new QHBoxLayout();
   
5.     pLayout->addWidget(pTreeWidget);
   
6.     pLayout->addWidget(pTableWidget);
   
7.     pLayout->setSpacing(10);
   
8.     pLayout->setContentsMargins(10, 10, 10, 10);
   
9. 
   
10.     setLayout(pLayout);
    
11. 
    
12.     // 获取大小策略
    
13.     QSizePolicy treeSizePolicy = pTreeWidget->sizePolicy();
    
14.     QSizePolicy tableSizePolicy = pTableWidget->sizePolicy();
    
15. 
    
16.     treeSizePolicy.setHorizontalStretch(1);
    
17.     tableSizePolicy.setHorizontalStretch(2);
    
18.     pTreeWidget->setSizePolicy(treeSizePolicy);
    
19.     pTableWidget->setSizePolicy(tableSizePolicy);

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