www.pudn.com > SnifferPro.rar > ProgBar.cpp

//////////////////////////////////////////////////////////////// 
// MSDN Magazine -- January 2003 
// If this code works, it was written by Paul DiLascia. 
// If not, I don't know who wrote it. 
// Compiles with VC 6.0 or VS.NET on Windows XP. Tab size=3. 
// 
#include "StdAfx.h" 
#include "ProgBar.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 pct) 
{ 
	CProgressCtrl& pc = m_wndProgBar; 
	DWORD dwOldStyle = pc.GetStyle(); 
	DWORD dwNewStyle = dwOldStyle; 
	if (pct>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 
		pc.SetPos(pct); 
 
	//} 
 
	// set progress bar position 
	if (pct==0) 
		// display MFC idle (ready) message. 
		GetParent()->PostMessage(WM_SETMESSAGESTRING, AFX_IDS_IDLEMESSAGE); 
}