Source code of Windows XP (NT5)
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/****************************** Module Header ******************************\
* Module Name: shutdown.c
*
* Copyright (c) 1992, Microsoft Corporation
*
* Handles shutdown dialog.
*
* History:
* 2-25-92 JohanneC Created - extracted from old pmdlgs.c with security
* added.
\***************************************************************************/
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include "progman.h"
#define LOGOFF_SETTING L"Logoff Setting"
INT_PTR WINAPI
ShutdownDlgProc(
HWND hDlg,
UINT message,
WPARAM wParam,
LPARAM lParam
);
VOID
CentreWindow(
HWND hwnd
);
/***************************************************************************\
* ShutdownDialog
*
* Creates the shutdown dialog
*
*
* History:
* 2-28-92 Johannec Created
*
\***************************************************************************/
BOOL
ShutdownDialog(
HANDLE hInst,
HWND hwnd
)
{
INT_PTR nResult;
BOOLEAN WasEnabled;
NTSTATUS Status;
TCHAR szMessage[MAXMESSAGELEN];
TCHAR szTitle[MAXMESSAGELEN];
Status = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE,
(BOOLEAN)TRUE,
(BOOLEAN)FALSE,
&WasEnabled);
if (!NT_SUCCESS(Status)) {
//
// We don't have permission to shutdown
//
LoadString(hInst, IDS_NO_PERMISSION_SHUTDOWN, szMessage, CharSizeOf(szMessage));
LoadString(hInst, IDS_SHUTDOWN_MESSAGE, szTitle, CharSizeOf(szTitle));
nResult = MessageBox(hwnd, szMessage, szTitle, MB_OK | MB_ICONSTOP);
return(FALSE);
}
//
// Put up the shutdown dialog
//
nResult = DialogBox(hInst, (LPTSTR) MAKEINTRESOURCE(IDD_SHUTDOWN_QUERY), hwnd, ShutdownDlgProc);
//
// Restore the shutdown privilege state
//
if (!WasEnabled) {
Status = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE,
(BOOLEAN)WasEnabled,
(BOOLEAN)FALSE,
&WasEnabled);
}
return(FALSE);
}
/***************************************************************************\
* FUNCTION: ShutdownDlgProc
*
* PURPOSE: Processes messages for shutdown confirmation dialog
*
* RETURNS: if user decided not to shutdown or reboot.
*
* HISTORY:
*
* 05-17-92 Davidc Created.
*
\***************************************************************************/
INT_PTR WINAPI
ShutdownDlgProc(
HWND hDlg,
UINT message,
WPARAM wParam,
LPARAM lParam
)
{
UINT uiOptions;
static DWORD dwShutdown = 1;
static HKEY hkeyShutdown = NULL;
switch (message) {
case WM_INITDIALOG:
{
DWORD dwType;
DWORD cbData;
DWORD dwDisposition;
BOOL bPowerdown;
bPowerdown = GetProfileInt(TEXT("Winlogon"), TEXT("PowerdownAfterShutdown"), 0);
if (!bPowerdown) {
ShowWindow(GetDlgItem(hDlg, IDD_POWEROFF), SW_HIDE);
ShowWindow(GetDlgItem(hDlg, IDOK2), SW_HIDE);
ShowWindow(GetDlgItem(hDlg, IDCANCEL2), SW_HIDE);
SendMessage(hDlg, DM_SETDEFID, IDOK, 0);
}
else {
ShowWindow(GetDlgItem(hDlg, IDOK), SW_HIDE);
ShowWindow(GetDlgItem(hDlg, IDCANCEL), SW_HIDE);
}
//
// Check the button that was the user's last shutdown selection.
//
if (RegCreateKeyEx(HKEY_CURRENT_USER, SHUTDOWN_SETTING_KEY, 0, 0, 0,
KEY_READ | KEY_WRITE | DELETE,
NULL, &hkeyShutdown, &dwDisposition) == ERROR_SUCCESS) {
cbData = sizeof(dwShutdown);
RegQueryValueEx(hkeyShutdown, SHUTDOWN_SETTING, 0, &dwType, (LPBYTE)&dwShutdown, &cbData);
}
switch(dwShutdown) {
case DLGSEL_SHUTDOWN_AND_RESTART:
CheckDlgButton(hDlg, IDD_RESTART, 1);
break;
case DLGSEL_SHUTDOWN_AND_POWEROFF:
if (bPowerdown) {
CheckDlgButton(hDlg, IDD_POWEROFF, 1);
break;
}
//
// Fall thru.
// Default to shutdown.
//
default:
CheckDlgButton(hDlg, IDD_SHUTDOWN, 1);
break;
}
//
// Position ourselves
//
CentreWindow(hDlg);
return(TRUE);
}
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDOK:
case IDOK2:
if (IsDlgButtonChecked(hDlg, IDD_SHUTDOWN)) {
uiOptions = EWX_SHUTDOWN;
dwShutdown = DLGSEL_SHUTDOWN;
}
else if (IsDlgButtonChecked(hDlg, IDD_RESTART)) {
uiOptions = EWX_SHUTDOWN | EWX_REBOOT;
dwShutdown = DLGSEL_SHUTDOWN_AND_RESTART;
}
else {
uiOptions = EWX_SHUTDOWN | EWX_POWEROFF;
dwShutdown = DLGSEL_SHUTDOWN_AND_POWEROFF;
}
if (hkeyShutdown) {
RegSetValueEx(hkeyShutdown, SHUTDOWN_SETTING, 0, REG_DWORD, (LPBYTE)&dwShutdown, sizeof(dwShutdown));
RegCloseKey(hkeyShutdown);
hkeyShutdown = NULL;
}
ExitWindowsEx(uiOptions, (DWORD)-1);
case IDCANCEL2:
case IDCANCEL:
if (hkeyShutdown) {
RegCloseKey(hkeyShutdown);
hkeyShutdown = NULL;
}
EndDialog(hDlg, 0);
return(TRUE);
}
break;
}
// We didn't process the message
return(FALSE);
}
/***************************************************************************\
* FUNCTION: NewLogoffDlgProc
*
* PURPOSE: Processes messages for logoff/shutdown confirmation dialog
*
* RETURNS: if user decided not to logoff, shutdown or reboot.
*
* HISTORY:
*
* 10-05-93 Johannec Created.
*
\***************************************************************************/
INT_PTR APIENTRY
NewLogoffDlgProc(
HWND hDlg,
UINT message,
WPARAM wParam,
LPARAM lParam
)
{
UINT uiOptions;
BOOLEAN WasEnabled = FALSE;
NTSTATUS Status;
static DWORD dwShutdown = 0;
static HKEY hkeyShutdown = NULL;
switch (message) {
case WM_INITDIALOG:
{
DWORD dwType;
BOOL bPowerdown;
DWORD cbData;
DWORD dwDisposition;
bPowerdown = GetProfileInt(TEXT("Winlogon"), TEXT("PowerdownAfterShutdown"), 0);
if (!bPowerdown) {
ShowWindow(GetDlgItem(hDlg, IDD_POWEROFF), SW_HIDE);
ShowWindow(GetDlgItem(hDlg, IDOK2), SW_HIDE);
ShowWindow(GetDlgItem(hDlg, IDCANCEL2), SW_HIDE);
SendMessage(hDlg, DM_SETDEFID, IDOK, 0);
}
else {
ShowWindow(GetDlgItem(hDlg, IDOK), SW_HIDE);
ShowWindow(GetDlgItem(hDlg, IDCANCEL), SW_HIDE);
}
//
// Initial setting is User's last selection
//
if (RegCreateKeyEx(HKEY_CURRENT_USER, SHUTDOWN_SETTING_KEY, 0, 0, 0,
KEY_READ | KEY_WRITE | DELETE,
NULL, &hkeyShutdown, &dwDisposition) == ERROR_SUCCESS) {
cbData = sizeof(dwShutdown);
RegQueryValueEx(hkeyShutdown, LOGOFF_SETTING, 0, &dwType, (LPBYTE)&dwShutdown, &cbData);
}
switch(dwShutdown) {
case DLGSEL_SHUTDOWN:
CheckDlgButton(hDlg, IDD_SHUTDOWN, 1);
break;
case DLGSEL_SHUTDOWN_AND_RESTART:
CheckDlgButton(hDlg, IDD_RESTART, 1);
break;
case DLGSEL_SHUTDOWN_AND_POWEROFF:
if (bPowerdown) {
CheckDlgButton(hDlg, IDD_POWEROFF, 1);
}
else {
CheckDlgButton(hDlg, IDD_SHUTDOWN, 1);
}
break;
default:
CheckDlgButton(hDlg, IDD_LOGOFF, 1);
break;
}
//
// Make sure the user has the privileges to shutdown the computer.
//
Status = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE,
(BOOLEAN)TRUE,
(BOOLEAN)FALSE,
&WasEnabled);
if (!NT_SUCCESS(Status)) {
//
// We don't have permission to shutdown
//
EnableWindow(GetDlgItem(hDlg, IDD_SHUTDOWN), 0);
EnableWindow(GetDlgItem(hDlg, IDD_RESTART), 0);
EnableWindow(GetDlgItem(hDlg, IDD_POWEROFF), 0);
}
//
// Position ourselves
//
CentreWindow(hDlg);
return(TRUE);
}
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDOK:
case IDOK2:
if (IsDlgButtonChecked(hDlg, IDD_LOGOFF)) {
uiOptions = EWX_LOGOFF;
dwShutdown = DLGSEL_LOGOFF;
}
else if (IsDlgButtonChecked(hDlg, IDD_SHUTDOWN)) {
uiOptions = EWX_SHUTDOWN;
dwShutdown = DLGSEL_SHUTDOWN;
}
else if (IsDlgButtonChecked(hDlg, IDD_RESTART)) {
uiOptions = EWX_SHUTDOWN | EWX_REBOOT;
dwShutdown = DLGSEL_SHUTDOWN_AND_RESTART;
}
else {
uiOptions = EWX_SHUTDOWN | EWX_POWEROFF;
dwShutdown = DLGSEL_SHUTDOWN_AND_POWEROFF;
}
//
// Save user's shutdown selection.
//
if (hkeyShutdown) {
RegSetValueEx(hkeyShutdown, LOGOFF_SETTING, 0, REG_DWORD, (LPBYTE)&dwShutdown, sizeof(dwShutdown));
RegCloseKey(hkeyShutdown);
hkeyShutdown = NULL;
}
//
// Make sure the user has the privileges to shutdown the computer.
//
ExitWindowsEx(uiOptions, (DWORD)-1);
//
// Restore the shutdown privilege state
//
if (!WasEnabled) {
Status = RtlAdjustPrivilege(SE_SHUTDOWN_PRIVILEGE,
(BOOLEAN)WasEnabled,
(BOOLEAN)FALSE,
&WasEnabled);
}
case IDCANCEL:
case IDCANCEL2:
if (hkeyShutdown) {
RegCloseKey(hkeyShutdown);
hkeyShutdown = NULL;
}
EndDialog(hDlg, 0);
return(TRUE);
}
break;
}
// We didn't process the message
return(FALSE);
}
/***************************************************************************\
* CentreWindow
*
* Purpose : Positions a window so that it is centred in its parent
*
* !!! WARNING this code is duplicated in winlogon\winutil.c
*
* History:
* 12-09-91 Davidc Created.
\***************************************************************************/
VOID
CentreWindow(
HWND hwnd
)
{
RECT rect;
RECT rectParent;
HWND hwndParent;
LONG dx, dy;
LONG dxParent, dyParent;
LONG Style;
// Get window rect
GetWindowRect(hwnd, &rect);
dx = rect.right - rect.left;
dy = rect.bottom - rect.top;
// Get parent rect
Style = GetWindowLong(hwnd, GWL_STYLE);
if ((Style & WS_CHILD) == 0) {
// Return the desktop windows size (size of main screen)
dxParent = GetSystemMetrics(SM_CXSCREEN);
dyParent = GetSystemMetrics(SM_CYSCREEN);
} else {
hwndParent = GetParent(hwnd);
if (hwndParent == NULL) {
hwndParent = GetDesktopWindow();
}
GetWindowRect(hwndParent, &rectParent);
dxParent = rectParent.right - rectParent.left;
dyParent = rectParent.bottom - rectParent.top;
}
// Centre the child in the parent
rect.left = (dxParent - dx) / 2;
rect.top = (dyParent - dy) / 3;
// Move the child into position
SetWindowPos(hwnd, NULL, rect.left, rect.top, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
SetForegroundWindow(hwnd);
}
INT_PTR APIENTRY ExitDlgProc(HWND hwnd, UINT uiMsg, WPARAM wParam, LPARAM lParam)
{
switch (uiMsg) {
case WM_INITDIALOG:
CentreWindow(hwnd);
break;
case WM_COMMAND:
switch (LOWORD(wParam)) {
case IDOK:
// fall through...
case IDCANCEL:
EndDialog(hwnd, LOWORD(wParam) == IDOK);
break;
default:
return(FALSE);
}
break;
default:
return(FALSE);
}
UNREFERENCED_PARAMETER(lParam);
return(TRUE);
}