236 lines
5.1 KiB
C++
236 lines
5.1 KiB
C++
//*************************************************************
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//
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// Debugging functions
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//
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// Microsoft Confidential
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// Copyright (c) Microsoft Corporation 1997
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// All rights reserved
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//
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//*************************************************************
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#include "precomp.hxx"
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#if DBG
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//
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// Global Variable containing the debugging level.
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//
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DWORD dwDebugLevel;
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//
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// Debug strings
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//
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const TCHAR c_szGPEdit[] = TEXT("APPMGR(%x): ");
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const TCHAR c_szCRLF[] = TEXT("\r\n");
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//
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// Registry debug information
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//
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#define DEBUG_REG_LOCATION TEXT("Software\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon")
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#define DEBUG_KEY_NAME TEXT("GPEditDebugLevel")
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//*************************************************************
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//
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// InitDebugSupport()
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//
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// Purpose: Sets the debugging level.
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// Also checks the registry for a debugging level.
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//
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// Parameters: None
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//
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// Return: void
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//
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// Comments:
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//
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//
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// History: Date Author Comment
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// 5/25/95 ericflo Created
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// 9-23-1998 stevebl shamelessly stolen from Eric's code
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//
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//*************************************************************
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void InitDebugSupport(void)
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{
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LONG lResult;
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HKEY hKey;
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DWORD dwType, dwSize;
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//
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// Initialize the debug level to normal
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//
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dwDebugLevel = DL_NORMAL;
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//
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// Check the registry
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//
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lResult = RegOpenKey (HKEY_LOCAL_MACHINE, DEBUG_REG_LOCATION,
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&hKey);
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if (lResult == ERROR_SUCCESS) {
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dwSize = sizeof(dwDebugLevel);
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RegQueryValueEx(hKey, DEBUG_KEY_NAME, NULL, &dwType,
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(LPBYTE)&dwDebugLevel, &dwSize);
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RegCloseKey(hKey);
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}
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}
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//*************************************************************
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//
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// DebugMsg()
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//
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// Purpose: Displays debug messages based on the debug level
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// and type of debug message.
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//
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// Parameters: mask - debug message type
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// pszMsg - debug message
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// ... - variable number of parameters
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//
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// Return: void
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//
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//
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// Comments:
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//
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//
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// History: Date Author Comment
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// 5/25/95 ericflo Created
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//
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//*************************************************************
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void _DebugMsg(UINT mask, LPCTSTR pszMsg, ...)
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{
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BOOL bOutput;
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TCHAR szDebugTitle[30];
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TCHAR szDebugBuffer[4096];
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va_list marker;
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DWORD dwErrCode;
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//
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// Save the last error code (so the debug output doesn't change it).
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//
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dwErrCode = GetLastError();
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//
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// Detemerine the correct amount of debug output
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//
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switch (LOWORD(dwDebugLevel)) {
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case DL_VERBOSE:
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bOutput = TRUE;
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break;
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case DL_NORMAL:
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//
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// Normal debug output. Don't
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// display verbose stuff, but
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// do display warnings/asserts.
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//
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if (mask != DM_VERBOSE) {
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bOutput = TRUE;
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} else {
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bOutput = FALSE;
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}
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break;
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case DL_NONE:
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default:
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//
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// Only display asserts
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//
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if (mask == DM_ASSERT) {
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bOutput = TRUE;
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} else {
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bOutput = FALSE;
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}
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break;
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}
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//
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// Display the error message if appropriate
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//
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if (bOutput) {
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wsprintf (szDebugTitle, c_szGPEdit, GetCurrentProcessId());
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OutputDebugString(szDebugTitle);
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va_start(marker, pszMsg);
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wvsprintf(szDebugBuffer, pszMsg, marker);
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OutputDebugString(szDebugBuffer);
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OutputDebugString(c_szCRLF);
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va_end(marker);
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if (dwDebugLevel & DL_LOGFILE) {
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HANDLE hFile;
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DWORD dwBytesWritten;
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hFile = CreateFile(TEXT("\\GPEdit.log"),
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GENERIC_WRITE,
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FILE_SHARE_READ,
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NULL,
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OPEN_ALWAYS,
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FILE_ATTRIBUTE_NORMAL,
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NULL);
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if (hFile != INVALID_HANDLE_VALUE) {
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if (SetFilePointer (hFile, 0, NULL, FILE_END) != 0xFFFFFFFF) {
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WriteFile (hFile, (LPCVOID) szDebugTitle,
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lstrlen (szDebugTitle) * sizeof(TCHAR),
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&dwBytesWritten,
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NULL);
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WriteFile (hFile, (LPCVOID) szDebugBuffer,
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lstrlen (szDebugBuffer) * sizeof(TCHAR),
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&dwBytesWritten,
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NULL);
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WriteFile (hFile, (LPCVOID) c_szCRLF,
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lstrlen (c_szCRLF) * sizeof(TCHAR),
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&dwBytesWritten,
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NULL);
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}
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CloseHandle (hFile);
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}
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}
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}
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//
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// Restore the last error code
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//
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SetLastError(dwErrCode);
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//
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// Break to the debugger if appropriate
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//
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if (mask == DM_ASSERT) {
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DebugBreak();
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}
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}
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#endif // DBG
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