MFC让控件随窗口大小而改变

转载自http://blog.****.net/chw1989/article/details/7488711

大小和位置都改变(亲测可行)

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

void CPaperManagementDlg::OnSize(UINT nType, int cx, int cy)

{

    CDialog::OnSize(nType, cx, cy);

    if(nType==) return;//最小化则什么都不做

    // 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);// 将变化后的对话框大小设为旧大小

}

changesize是自己添加的函数

void CPaperManagementDlg::ChangeSize(CWnd *pWnd, int cx, int cy)

{

    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

	{

		CRect rect;   //获取控件变化前的大小

		pWnd->GetWindowRect(&rect);

		ScreenToClient(&rect);//将控件大小转换为在对话框中的区域坐标

		//    cx/m_rect.Width()为对话框在横向的变化比例

		rect.left=rect.left*cx/m_rect.Width();//调整控件大小

		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);//设置控件大小

	}

}

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MFC让控件随窗口大小而改变

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