MFC 控件自适应对话框大小

转自:http://blog.csdn.net/chw1989/article/details/7488711

一。大小和位置都改变

1.首先为窗体类添加CRect m_rect,该成员变量用来记录窗体的当前大小。

2.在类向导里面(Ctrl+W),为窗体添加消息WM_SIZE的响应函数OnSize();

注意if(nType==1) return;这一句必须添加,否则最小化恢复的时候会出错。

 1 void CPaperManagementDlg::OnSize(UINT nType, int cx, int cy) 
 2 {
 3     CDialog::OnSize(nType, cx, cy);
 4     if(nType==1) return;//最小化则什么都不做
 5     // TODO: Add your message handler code here
 6     CWnd *pWnd; 
 7     pWnd = GetDlgItem(IDC_STATIC);
 8     ChangeSize(pWnd, cx, cy);
 9     pWnd = GetDlgItem(IDC_FILE_TREE);
10     ChangeSize(pWnd, cx, cy);
11     pWnd = GetDlgItem(IDC_EDIT_NAME);
12     ChangeSize(pWnd, cx, cy);
13     pWnd = GetDlgItem(IDC_EDIT_REFERENCE);
14     ChangeSize(pWnd, cx, cy);
15     pWnd = GetDlgItem(IDC_EDIT_SUMMARY);
16     ChangeSize(pWnd, cx, cy);
17     pWnd = GetDlgItem(IDC_EDIT_REMARK);
18     ChangeSize(pWnd, cx, cy);
19     pWnd = GetDlgItem(IDC_BUTTON_UPDATE);
20     ChangeSize(pWnd, cx, cy);
21     pWnd = GetDlgItem(IDC_BUTTON_SAVE);
22     ChangeSize(pWnd, cx, cy);
23     pWnd = GetDlgItem(IDC_STATIC_1);
24     ChangeSize(pWnd, cx, cy);
25     pWnd = GetDlgItem(IDC_STATIC_2);
26     ChangeSize(pWnd, cx, cy);
27     pWnd = GetDlgItem(IDC_STATIC_3);
28     ChangeSize(pWnd, cx, cy);
29     pWnd = GetDlgItem(IDC_STATIC_4);
30     ChangeSize(pWnd, cx, cy);
31     GetClientRect(&m_rect);// 将变化后的对话框大小设为旧大小    
32 }

其中函数ChangeSize是手动添加的用户函数,步骤如下

 

3.添加一个改变控件大小的用户函数,void ChangeSize(CWnd *pWnd, int cx, int cy),并编写代码

 1 void CPaperManagementDlg::ChangeSize(CWnd *pWnd, int cx, int cy)
 2 {
 3     if(pWnd)  //判断是否为空,因为对话框创建时会调用此函数,而当时控件还未创建    
 4     {
 5         CRect rect;   //获取控件变化前的大小  
 6         pWnd->GetWindowRect(&rect);
 7         ScreenToClient(&rect);//将控件大小转换为在对话框中的区域坐标
 8 
 9         //    cx/m_rect.Width()为对话框在横向的变化比例
10         rect.left=rect.left*cx/m_rect.Width();//调整控件大小
11         rect.right=rect.right*cx/m_rect.Width();
12         rect.top=rect.top*cy/m_rect.Height();
13         rect.bottom=rect.bottom*cy/m_rect.Height();
14         pWnd->MoveWindow(rect);//设置控件大小
15     }
16 }

真正改变控件大小的函数是ChangeSize函数,在OnSize中不断调用ChangeSize函数从而改变窗体中所有控件的大小。

转载于:https://www.cnblogs.com/gaohai/p/7086791.html

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