persist.cpp

功能： 实现目录树中文件夹

// Persist.cpp Persistent frame class for SDI apps

#include "stdafx.h"
#include "persist.h"

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif
///////////////////////////////////////////////////////////////
// CPersistentFrame

const CRect CPersistentFrame::s_rectDefault(10,  10,
                                            500, 400);          // 初始尺寸
const char CPersistentFrame::s_profileHeading[] = "Window size";//标题名为"Window size"
const char CPersistentFrame::s_profileRect[] = "Rect";          ////窗口坐标入口
const char CPersistentFrame::s_profileIcon[] = "icon";          //图标入口
const char CPersistentFrame::s_profileMax[] = "max";            //最大化入口
const char CPersistentFrame::s_profileTool[] = "tool";          //工具栏入口
const char CPersistentFrame::s_profileStatus[] = "status";      //状态栏入口
IMPLEMENT_DYNAMIC(CPersistentFrame, CFrameWnd)

BEGIN_MESSAGE_MAP(CPersistentFrame, CFrameWnd)
    //{{AFX_MSG_MAP(CPersistentFrame)
    ON_WM_DESTROY()
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

///////////////////////////////////////////////////////////////
CPersistentFrame::CPersistentFrame(){
    m_bFirstTime = TRUE;//是否第一次打开视图
}

///////////////////////////////////////////////////////////////
CPersistentFrame::~CPersistentFrame()
{
}

///////////////////////////////////////////////////////////////
void CPersistentFrame::OnDestroy()
{
    CString strText;//窗口尺寸
    BOOL bIconic, bMaximized;//图表，是否最大小化

    WINDOWPLACEMENT wndpl;
    wndpl.length = sizeof(WINDOWPLACEMENT);
    // gets current window position and
    //  iconized/maximized status
    BOOL bRet = GetWindowPlacement(&wndpl);//获取现有窗口尺寸，图表，状态。
    if (wndpl.showCmd == SW_SHOWNORMAL) {
        bIconic = FALSE;
        bMaximized = FALSE;
    }
    else if (wndpl.showCmd == SW_SHOWMAXIMIZED) {
        bIconic = FALSE;
        bMaximized = TRUE;
    } 
    else if (wndpl.showCmd == SW_SHOWMINIMIZED) {
        bIconic = TRUE;
        if (wndpl.flags) {
            bMaximized = TRUE;
        }
        else {
            bMaximized = FALSE;
        }
    }
    strText.Format("%04d %04d %04d %04d",       //获取窗口尺寸
                   wndpl.rcNormalPosition.left,
                   wndpl.rcNormalPosition.top,
                   wndpl.rcNormalPosition.right,
                   wndpl.rcNormalPosition.bottom);
    AfxGetApp()->WriteProfileString(s_profileHeading,
                                    s_profileRect, strText);//将窗口尺寸写入注册表
    AfxGetApp()->WriteProfileInt(s_profileHeading,        
                                 s_profileIcon, bIconic);   //将图标状态写入注册表
    AfxGetApp()->WriteProfileInt(s_profileHeading,
                                 s_profileMax, bMaximized); //将窗口最大，小化写入注册表
    SaveBarState(AfxGetApp()->m_pszProfileName);             //将控制栏状态写入注册表
    CFrameWnd::OnDestroy();
}

///////////////////////////////////////////////////////////////
void CPersistentFrame::ActivateFrame(int nCmdShow)//由注册表读出框架状态，尺寸。
{
    CString strText;
    BOOL bIconic, bMaximized;
    UINT flags;
    WINDOWPLACEMENT wndpl;
    CRect rect;

    if (m_bFirstTime) {
        m_bFirstTime = FALSE;
        strText = AfxGetApp()->GetProfileString(s_profileHeading,
                                                s_profileRect);
        if (!strText.IsEmpty()) {
            rect.left = atoi((const char*) strText);
            rect.top = atoi((const char*) strText + 5);
            rect.right = atoi((const char*) strText + 10);
            rect.bottom = atoi((const char*) strText + 15);
        }
        else {
            rect = s_rectDefault;
        }

        bIconic = AfxGetApp()->GetProfileInt(s_profileHeading,
                                             s_profileIcon, 0);
        bMaximized = AfxGetApp()->GetProfileInt(s_profileHeading,
                                                s_profileMax, 0);   
        if (bIconic) {
            nCmdShow = SW_SHOWMINNOACTIVE;
            if (bMaximized) {
                flags = WPF_RESTORETOMAXIMIZED;
            }
            else {
                flags = WPF_SETMINPOSITION;
            }
        }
        else {
            if (bMaximized) {
                nCmdShow = SW_SHOWMAXIMIZED;
                flags = WPF_RESTORETOMAXIMIZED;
            }
            else {
                nCmdShow = SW_NORMAL;
                flags = WPF_SETMINPOSITION;
            }
        }
        wndpl.length = sizeof(WINDOWPLACEMENT);
        wndpl.showCmd = nCmdShow;
        wndpl.flags = flags;
        wndpl.ptMinPosition = CPoint(0, 0);
        wndpl.ptMaxPosition =
            CPoint(-::GetSystemMetrics(SM_CXBORDER),
                   -::GetSystemMetrics(SM_CYBORDER));
        wndpl.rcNormalPosition = rect;
        LoadBarState(AfxGetApp()->m_pszProfileName);
        // sets window's position and minimized/maximized status
        BOOL bRet = SetWindowPlacement(&wndpl);
    }
    CFrameWnd::ActivateFrame(nCmdShow);
}