MFC实现对话框最大化时控件的集体跟踪

MFC实现对话框最大化时控件的集体跟踪

1.在对话框类中（.h文件）定义如下变量和函数

void ReSize();  POINT old; 

afx_msg void OnSize(UINT nType, int cx, int cy);  

2.在OnInitDialog()中 计算出原始对话框的大小

CRect rect;      GetClientRect(&rect);     //取客户区大小    old.x=rect.right-rect.left;  old.y=rect.bottom-rect.top;  

3.添加 WM_SIZE消息

void CSeakyDlg::OnSize(UINT nType, int cx, int cy){CDialogEx::OnSize(nType, cx, cy);if (nType == SIZE_RESTORED || nType == SIZE_MAXIMIZED){ReSize();}}

4.刷新控件函数

void CSeakyDlg::ReSize(){float fsp[2];POINT Newp; //获取现在对话框的大小  CRect recta;GetClientRect(&recta);     //取客户区大小    Newp.x = recta.right - recta.left;Newp.y = recta.bottom - recta.top;fsp[0] = (float)Newp.x / old.x;fsp[1] = (float)Newp.y / old.y;CRect Rect;int woc;CPoint OldTLPoint, TLPoint; //左上角  CPoint OldBRPoint, BRPoint; //右下角  HWND  hwndChild = ::GetWindow(m_hWnd, GW_CHILD);  //列出所有控件    while (hwndChild){woc = ::GetDlgCtrlID(hwndChild);//取得ID  GetDlgItem(woc)->GetWindowRect(Rect);ScreenToClient(Rect);OldTLPoint = Rect.TopLeft();TLPoint.x = long(OldTLPoint.x*fsp[0]);TLPoint.y = long(OldTLPoint.y*fsp[1]);OldBRPoint = Rect.BottomRight();BRPoint.x = long(OldBRPoint.x *fsp[0]);BRPoint.y = long(OldBRPoint.y *fsp[1]);Rect.SetRect(TLPoint, BRPoint);GetDlgItem(woc)->MoveWindow(Rect, TRUE);hwndChild = ::GetWindow(hwndChild, GW_HWNDNEXT);}old = Newp;}