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//+---------------------------------------------------------------------------
//
// Microsoft Windows
// Copyright (C) Microsoft Corporation, 1998
//
// File: status.c
//
// Contents: Status UI
//
// History: 11-19-98 EricFlo Created
//
//----------------------------------------------------------------------------
#include "msgina.h"
#define WM_HIDEOURSELVES (WM_USER + 1000)
//*************************************************************
//
// StatusMessageDlgProc()
//
// Purpose: Dialog box procedure for the status dialog
//
// Parameters: hDlg - handle to the dialog box
// uMsg - window message
// wParam - wParam
// lParam - lParam
//
// Return: TRUE if message was processed
// FALSE if not
//
// Comments:
//
// History: Date Author Comment
// 11/19/98 EricFlo Created
//
//*************************************************************
INT_PTR APIENTRY StatusMessageDlgProc (HWND hDlg, UINT uMsg, WPARAM wParam, LPARAM lParam){
switch (uMsg) {
case WM_INITDIALOG: { RECT rc; PGLOBALS pGlobals = (PGLOBALS) lParam;
SetWindowLongPtr (hDlg, DWLP_USER, (LONG_PTR) pGlobals);
SizeForBranding(hDlg, FALSE); CentreWindow (hDlg);
pGlobals->xStatusBandOffset = 0;
if (GetClientRect(hDlg, &rc)) { pGlobals->cxStatusBand = rc.right-rc.left; } else { pGlobals->cxStatusBand = 100; }
if (_Shell_LogonStatus_Exists()) { SetWindowPos(hDlg, NULL, 0, 0, 0, 0, SWP_NOACTIVATE | SWP_NOMOVE | SWP_NOREDRAW | SWP_NOZORDER); PostMessage(hDlg, WM_HIDEOURSELVES, 0, 0); }
if ((pGlobals->dwStatusOptions & STATUSMSG_OPTION_NOANIMATION) == 0) { SetTimer(hDlg, 0, 20, NULL); } } return TRUE;
case WM_HIDEOURSELVES: ShowWindow(hDlg, SW_HIDE); break;
case WM_TIMER:
if (wParam == 0) { PGLOBALS pGlobals = (PGLOBALS) GetWindowLongPtr(hDlg, DWLP_USER); HDC hDC;
if (pGlobals) { pGlobals->xStatusBandOffset = (pGlobals->xStatusBandOffset+5) % pGlobals->cxStatusBand; hDC = GetDC(hDlg); if ( hDC ) { PaintBranding(hDlg, hDC, pGlobals->xStatusBandOffset, TRUE, FALSE, COLOR_BTNFACE); ReleaseDC(hDlg, hDC); } } } break;
case WM_ERASEBKGND: { PGLOBALS pGlobals = (PGLOBALS) GetWindowLongPtr(hDlg, DWLP_USER);
if (pGlobals) { return PaintBranding(hDlg, (HDC)wParam, pGlobals->xStatusBandOffset, FALSE, FALSE, COLOR_BTNFACE); }
return 0; }
case WM_QUERYNEWPALETTE: return BrandingQueryNewPalete(hDlg);
case WM_PALETTECHANGED: return BrandingPaletteChanged(hDlg, (HWND)wParam);
case WM_DESTROY: KillTimer (hDlg, 0); break;
default: break; }
return FALSE;}
//*************************************************************
//
// StatusMessageThread()
//
// Purpose: Status message thread
//
// Parameters: hDesktop - Desktop handle to put UI on
//
// Return: void
//
// History: Date Author Comment
// 11/19/98 EricFlo Created
//
//*************************************************************
void StatusMessageThread (PGLOBALS pGlobals){ HANDLE hInstDll; MSG msg; DWORD dwResult; HANDLE hObjects[2];
hInstDll = LoadLibrary (TEXT("msgina.dll"));
if (pGlobals->hStatusDesktop) { SetThreadDesktop (pGlobals->hStatusDesktop); }
pGlobals->hStatusDlg = CreateDialogParam (hDllInstance, MAKEINTRESOURCE(IDD_STATUS_MESSAGE_DIALOG), NULL, StatusMessageDlgProc, (LPARAM) pGlobals);
SetEvent (pGlobals->hStatusInitEvent);
if (pGlobals->hStatusDlg) {
hObjects[0] = pGlobals->hStatusTermEvent;
while (TRUE) { dwResult = MsgWaitForMultipleObjectsEx (1, hObjects, INFINITE, (QS_ALLPOSTMESSAGE | QS_ALLINPUT), MWMO_INPUTAVAILABLE);
if (dwResult == WAIT_FAILED) { break; }
if (dwResult == WAIT_OBJECT_0) { break; }
while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { if (!IsDialogMessage (pGlobals->hStatusDlg, &msg)) { TranslateMessage(&msg); DispatchMessage(&msg); }
if (WaitForSingleObject (pGlobals->hStatusTermEvent, 0) == WAIT_OBJECT_0) { goto ExitLoop; } } }
ExitLoop: DestroyWindow(pGlobals->hStatusDlg); pGlobals->hStatusDlg = NULL; }
if (hInstDll) { FreeLibraryAndExitThread(hInstDll, TRUE); } else { ExitThread (TRUE); }}
//
// Creates and displays the initial status message
//
// Set in WlxInitialize
DWORD g_dwMainThreadId = 0; // Creation or removal of the status dialog is not thread safe.
// It is kind of difficult to fix with a critsec because of
// the mix of objects and windows messages. one can't hold
// a critsec accross a window message call as it would introduce
// the possibility of deadlocks
BOOLWINAPIWlxDisplayStatusMessage(PVOID pWlxContext, HDESK hDesktop, DWORD dwOptions, PWSTR pTitle, PWSTR pMessage){ PGLOBALS pGlobals = (PGLOBALS) pWlxContext; DWORD dwThreadId;
if (!pGlobals) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; }
if (g_dwMainThreadId == GetCurrentThreadId()) // Denies creation/deletion on other threads
{ // than the main thread of winlogon
if (!pGlobals->hStatusDlg) {
if (!ReadWinlogonBoolValue(DISABLE_STATUS_MESSAGES, FALSE)) {
pGlobals->hStatusInitEvent = CreateEvent (NULL, TRUE, FALSE, NULL); pGlobals->hStatusTermEvent = CreateEvent (NULL, TRUE, FALSE, NULL);
if (pGlobals->hStatusInitEvent && pGlobals->hStatusTermEvent) {
pGlobals->hStatusDesktop = hDesktop;
//
// Set the globals here so that StatusMessageDlgProc can look at them in WM_INITDIALOG.
//
pGlobals->dwStatusOptions = dwOptions;
pGlobals->hStatusThread = CreateThread (NULL, 0, (LPTHREAD_START_ROUTINE) StatusMessageThread, (LPVOID) pGlobals, 0, &dwThreadId); if (pGlobals->hStatusThread) {
DWORD dwWaitResult;
do {
dwWaitResult = WaitForSingleObject(pGlobals->hStatusInitEvent, 0); if (dwWaitResult != WAIT_OBJECT_0) {
dwWaitResult = MsgWaitForMultipleObjects(1, &pGlobals->hStatusInitEvent, FALSE, INFINITE, QS_ALLPOSTMESSAGE | QS_ALLINPUT); if (dwWaitResult == WAIT_OBJECT_0 + 1) {
MSG msg;
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg); DispatchMessage(&msg); } } } } while (dwWaitResult == WAIT_OBJECT_0 + 1); } } } } }
if (pGlobals->hStatusDlg) {
if (pTitle) { SetWindowText (pGlobals->hStatusDlg, pTitle); }
SetDlgItemText (pGlobals->hStatusDlg, IDC_STATUS_MESSAGE_TEXT, pMessage);
_Shell_LogonStatus_ShowStatusMessage(pMessage);
if (dwOptions & STATUSMSG_OPTION_SETFOREGROUND) { SetForegroundWindow (pGlobals->hStatusDlg); } }
return TRUE;}
//
// Gets the current status message
//
BOOLWINAPIWlxGetStatusMessage(PVOID pWlxContext, DWORD *pdwOptions, PWSTR pMessage, DWORD dwBufferSize){ PGLOBALS pGlobals = (PGLOBALS) pWlxContext; DWORD dwLen;
if (!pGlobals || !pMessage) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; }
dwLen = (DWORD) SendDlgItemMessage (pGlobals->hStatusDlg, IDC_STATUS_MESSAGE_TEXT, WM_GETTEXTLENGTH, 0, 0);
if (dwBufferSize < dwLen) { SetLastError (ERROR_INSUFFICIENT_BUFFER); return FALSE; }
GetDlgItemText (pGlobals->hStatusDlg, IDC_STATUS_MESSAGE_TEXT, pMessage, dwBufferSize);
if (pdwOptions) { *pdwOptions = pGlobals->dwStatusOptions; }
return TRUE;}
//
// Removes the status dialog
//
BOOLWINAPIWlxRemoveStatusMessage(PVOID pWlxContext){ PGLOBALS pGlobals = (PGLOBALS) pWlxContext;
if (!pGlobals) { SetLastError(ERROR_INVALID_PARAMETER); return FALSE; }
if (g_dwMainThreadId != GetCurrentThreadId()) { // Denies creation/deletion on other threads
return FALSE; }
if (pGlobals->hStatusTermEvent) {
SetEvent(pGlobals->hStatusTermEvent);
if (pGlobals->hStatusThread) {
if (pGlobals->hStatusDlg) {
DWORD dwWaitResult;
do {
dwWaitResult = WaitForSingleObject(pGlobals->hStatusThread, 0); if (dwWaitResult != WAIT_OBJECT_0) {
dwWaitResult = MsgWaitForMultipleObjects(1, &pGlobals->hStatusThread, FALSE, 10000, QS_ALLPOSTMESSAGE | QS_ALLINPUT); if (dwWaitResult == WAIT_OBJECT_0 + 1) {
MSG msg;
if (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
TranslateMessage(&msg); DispatchMessage(&msg); } } } } while (dwWaitResult == WAIT_OBJECT_0 + 1); }
CloseHandle (pGlobals->hStatusThread); }
CloseHandle (pGlobals->hStatusTermEvent); }
if (pGlobals->hStatusInitEvent) { CloseHandle (pGlobals->hStatusInitEvent); }
pGlobals->hStatusInitEvent = NULL; pGlobals->hStatusTermEvent = NULL; pGlobals->hStatusThread = NULL;
if (pGlobals->hStatusDesktop) { //
// Close the desktop handle here. Since the status thread
// was using it, Winlogon was unable to close the handle
// itself so we have to do it now.
//
CloseDesktop(pGlobals->hStatusDesktop); pGlobals->hStatusDesktop = NULL; }
pGlobals->hStatusDlg = NULL;
return TRUE;}
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