Source code of Windows XP (NT5)
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/****************************************************************************
Copyright (c) Microsoft Corporation 1998
All rights reserved
File: ERRORLOG.CPP
***************************************************************************/
#include "pch.h"
#include "utils.h"
#include "logging.h"
#include <richedit.h>
DEFINE_MODULE("RIPREP");
//
// EditStreamCallback( )
//
// Callback routine used by the rich edit control to read in the log file.
//
// Returns: 0 - to continue.
// Otherwize, Win32 error code.
//
DWORD CALLBACK
EditStreamCallback (
HANDLE hLogFile,
LPBYTE Buffer,
LONG cb,
PULONG pcb
)
{
DWORD error;
TraceFunc( "EditStreamCallback( )\n" );
if ( !ReadFile ( g_hLogFile, Buffer, cb, pcb, NULL ) ) {
error = GetLastError( );
DebugMsg( "Error - EditStreamCallback: GetLastError() => 0x%08x \n", error );
RETURN(error);
}
RETURN(0);
}
//
// ErrorsDlgProc()
//
INT_PTR CALLBACK
ErrorsDlgProc(
HWND hDlg,
UINT uMsg,
WPARAM wParam,
LPARAM lParam )
{
switch (uMsg)
{
default:
return FALSE;
case WM_INITDIALOG:
{
HRESULT hr;
HWND hWndRichEdit = GetDlgItem( hDlg, IDC_E_ERRORS );
EDITSTREAM eStream; // structure used by EM_STREAMIN message
Assert( hWndRichEdit );
ZeroMemory( &eStream, sizeof(eStream) );
hr = THR( LogOpen( ) );
if ( FAILED( hr ) )
{
HWND hParent = GetParent( hDlg );
DestroyWindow( hDlg );
SetFocus( hParent );
return FALSE;
}
// move to the beginning of the newest log
SetFilePointer( g_hLogFile, g_dwLogFileStartLow, (LONG*)&g_dwLogFileStartHigh, FILE_BEGIN );
eStream.pfnCallback = (EDITSTREAMCALLBACK) EditStreamCallback;
SendMessage ( hWndRichEdit, EM_STREAMIN, SF_TEXT, (LPARAM) &eStream );
SendMessage ( hWndRichEdit, EM_SETMODIFY, TRUE, 0 );
CloseHandle( g_hLogFile );
g_hLogFile = INVALID_HANDLE_VALUE;
LogClose( );
CenterDialog( hDlg );
PostMessage( hDlg, WM_USER, 0, 0 );
}
break;
case WM_COMMAND:
switch ( wParam )
{
case IDCANCEL:
EndDialog ( hDlg, 0 );
break;
default:
return FALSE;
}
case WM_USER:
{
HWND hWndRichEdit = GetDlgItem( hDlg, IDC_E_ERRORS );
// These have to be delayed or the Edit control will
// highlight all the text.
SendMessage(hWndRichEdit,EM_SETSEL,0,0);
SendMessage(hWndRichEdit,EM_SCROLLCARET,0,0);
}
break;
}
return TRUE;
}