MFC讓控件隨窗口大小而改變，MFC控件窗口大小

MFC讓控件隨窗口大小而改變，MFC控件窗口大小

轉載自http://blog.csdn.net/chw1989/article/details/7488711

大小和位置都改變(親測可行)

1.首先為窗體類添加CRect m_rect，該成員變量用來記錄窗體的當前大小。

2.在類向導裡面（Ctrl+W），為窗體添加消息WM_SIZE的響應函數OnSize(）；

注意if(nType==1) return;這一句必須添加，否則最小化恢復的時候會出錯

1. void CPaperManagementDlg::OnSize(UINT nType, int cx, int cy)   
   {  
       CDialog::OnSize(nType, cx, cy);  
       if(nType==1) return;//最小化則什麼都不做  
       // TODO: Add your message handler code here  
       CWnd *pWnd;   
       pWnd = GetDlgItem(IDC_STATIC);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_FILE_TREE);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_EDIT_NAME);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_EDIT_REFERENCE);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_EDIT_SUMMARY);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_EDIT_REMARK);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_BUTTON_UPDATE);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_BUTTON_SAVE);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_STATIC_1);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_STATIC_2);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_STATIC_3);  
       ChangeSize(pWnd, cx, cy);  
       pWnd = GetDlgItem(IDC_STATIC_4);  
       ChangeSize(pWnd, cx, cy);  
       GetClientRect(&m_rect);// 將變化後的對話框大小設為舊大小     
   }  

   changesize是自己添加的函數

void CPaperManagementDlg::ChangeSize(CWnd *pWnd, int cx, int cy)
{
    if(pWnd)  //判斷是否為空，因為對話框創建時會調用此函數，而當時控件還未創建	
	{
		CRect rect;   //獲取控件變化前的大小  
		pWnd->GetWindowRect(&rect);
		ScreenToClient(&rect);//將控件大小轉換為在對話框中的區域坐標

		//    cx/m_rect.Width()為對話框在橫向的變化比例
		rect.left=rect.left*cx/m_rect.Width();//調整控件大小
		rect.right=rect.right*cx/m_rect.Width();
		rect.top=rect.top*cy/m_rect.Height();
		rect.bottom=rect.bottom*cy/m_rect.Height();
		pWnd->MoveWindow(rect);//設置控件大小
	}
}