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progressbar.cpp

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#include "stdafx.h"
#include "progressbar.h"


#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif



IMPLEMENT_DYNAMIC(CProgStatusBar, CStatusBar)
BEGIN_MESSAGE_MAP(CProgStatusBar, CStatusBar)
        ON_WM_CREATE()
        ON_WM_SIZE()
END_MESSAGE_MAP()

CProgStatusBar::CProgStatusBar()
{
}

CProgStatusBar::~CProgStatusBar()
{
}

// Status bar created: create progress bar too.
//
int CProgStatusBar::OnCreate(LPCREATESTRUCT lpcs)
{
        lpcs->style |= WS_CLIPCHILDREN;
        VERIFY(CStatusBar::OnCreate(lpcs) == 0);
        VERIFY(m_wndProgBar.Create(WS_CHILD, CRect(), this, 1));
        m_wndProgBar.SetRange(0,100);
        return 0;
}

// Status bar was sized: adjust size of progress bar to same as first
// pane (ready message). Note that the progress bar may or may not be
// visible.
//
void CProgStatusBar::OnSize(UINT nType, int cx, int cy)
{
        CStatusBar::OnSize(nType, cx, cy); // call base class
        CRect rc;                                                                 // rectangle 
        GetItemRect(0, &rc);                                      // item 0 = first pane, "ready" message
        m_wndProgBar.MoveWindow(&rc,FALSE);// move progress bar
}

// Set progress bar position. pct is an integer from 0 to 100:
//
//  0 = hide progress bar and display ready message (done);
// >0 = (assemed 0-100) set progress bar position
//
// You should call this from your main frame to update progress.
// (See Mainfrm.cpp)
//
void CProgStatusBar::OnProgress(UINT udPos)
{
        CProgressCtrl& pc = m_wndProgBar;
        DWORD dwOldStyle = pc.GetStyle();
        DWORD dwNewStyle = dwOldStyle;
        if (udPos > 0)
                // positive progress: show prog bar
                dwNewStyle |= WS_VISIBLE;
        else
                // prog <= 0: hide prog bar
                dwNewStyle &= ~WS_VISIBLE;

        if (dwNewStyle != dwOldStyle) {
                // change state of hide/show
                SetWindowText(NULL);                                                                                    // clear old text
                SetWindowLong(pc.m_hWnd, GWL_STYLE, dwNewStyle);        // change style
        }

        // set progress bar position
        pc.SetPos(udPos);
        if (udPos == 0)
                // display MFC idle (ready) message.
                GetParent()->PostMessage(WM_SETMESSAGESTRING, AFX_IDS_IDLEMESSAGE);
}


void CProgStatusBar::OnProgressMinMax(int minPos, int maxPos) {
        m_wndProgBar.SetPos(0);
        m_wndProgBar.SetRange(minPos, maxPos);
}

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