488 lines
15 KiB
C
488 lines
15 KiB
C
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/****************************** Module Header ******************************\
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* Module Name: access.c
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*
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* Copyright (c) 1997, Microsoft Corporation
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*
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* Accessibility notification dialogs
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*
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* History:
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* 02-01-97 Fritz Sands Created
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\***************************************************************************/
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#include <stdio.h>
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#include <wtypes.h>
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#include "dialogs.h"
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#include <winuserp.h>
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#include <oleacc.h>
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#pragma hdrstop
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/*
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* Notification Dialog Stuff
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*/
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extern HINSTANCE g_hInstance;
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#define cchBuf 1024 // plenty of room for title
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#define cchTitle 128
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typedef struct tagACCESSINFO {
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UINT Feature;
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UINT TitleID;
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HANDLE hDesk;
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WCHAR wcTitle[cchTitle];
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} ACCESSINFO, *PACCESSINFO;
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#define NOTIF_KEY __TEXT("Control Panel\\Accessibility")
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#define NOTIFY_VALUE __TEXT("Warning Sounds")
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#define HOTKEYCODE 100
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#define ID_STICKYKEYNAME NOTIF_KEY __TEXT("\\StickyKeys")
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#define ID_TOGGLEKEYS NOTIF_KEY __TEXT("\\ToggleKeys")
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#define ID_HIGHCONTROST NOTIF_KEY __TEXT("\\HighContrast")
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#define ID_MOUSEKEYS NOTIF_KEY __TEXT("\\MouseKeys")
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#define ID_SERIALKEYS NOTIF_KEY __TEXT("\\SerialKeys")
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/***************************************************************************
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* *
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* ConfirmHandler_InitDialog *
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* *
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* Input: hWnd = dialog window handle *
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* uiTitle = resource ID of dialog box title *
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* uiTitle+1 through uiTitle+n = resource ID of dialog box text *
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* Output: Returns TRUE on success, FALSE on failure. *
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* *
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***************************************************************************/
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BOOL ConfirmHandler_InitDialog(HWND hWnd, HDESK hDesk, UINT uiTitle, WCHAR *pszTitle) {
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RECT rc; // Current window size
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WCHAR *pszBuf;
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WCHAR *pszNext;
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int cchBufLeft;
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int cchHelpText;
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int fSuccess = 0;
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WCHAR szDesktop[MAX_PATH];
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DWORD Len1 = MAX_PATH;
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BOOL b;
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szDesktop[0] = 0;
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b = GetUserObjectInformation(hDesk, UOI_NAME, szDesktop, MAX_PATH, &Len1);
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SetWindowText(hWnd, pszTitle); // Init title bar
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pszBuf = (WCHAR *)LocalAlloc(LMEM_FIXED, cchBuf * sizeof (WCHAR));
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if (!pszBuf) goto Exit;
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pszNext = pszBuf; cchBufLeft = cchBuf;
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while (cchHelpText = LoadString(g_hInstance, ++uiTitle, pszNext, cchBufLeft)) {
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pszNext += cchHelpText;
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cchBufLeft -= cchHelpText;
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}
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SetDlgItemText(hWnd, ID_HELPTEXT, pszBuf); // Init help text
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if (b && (0 == wcscmp(szDesktop,L"Winlogon"))) {
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EnableWindow(GetDlgItem(hWnd, IDHELP), FALSE);
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}
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// Make us a topmost window and center ourselves.
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GetWindowRect(hWnd, &rc); // Get size of dialog
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// Center dialog and make it topmost
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SetWindowPos(hWnd,
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HWND_TOPMOST,
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(GetSystemMetrics(SM_CXFULLSCREEN)/2) - (rc.right - rc.left)/2,
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(GetSystemMetrics(SM_CYFULLSCREEN)/2) - (rc.bottom - rc.top)/2,
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0,0, SWP_NOSIZE );
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// Make sure we're active!
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// Lets try setting this to be the foreground window.
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// SetForegroundWindow(hWnd);
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// SetForgroundWindow will not work because we are not the forground task. So use accSelect
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if ( hWnd )
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{
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IAccessible *pAcc = NULL;
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VARIANT varChild;
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varChild.vt = VT_I4;
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varChild.lVal = 0;
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if ( AccessibleObjectFromWindow( hWnd, OBJID_CLIENT, &IID_IAccessible, (void**)&pAcc ) == S_OK )
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{
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if ( pAcc )
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pAcc->lpVtbl->accSelect( pAcc, SELFLAG_TAKEFOCUS, varChild );
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}
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}
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fSuccess = 1;
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LocalFree((HLOCAL)pszBuf);
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Exit:
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return fSuccess;
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}
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/***************************************************************************
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* *
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* *
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* ConfirmHandler *
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* *
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* Input: Std Window messages *
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* Output: IDOK if success, IDCANCEL if we should abort *
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* *
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* *
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* Put up the main dialog to tell the user what is happening and to get *
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* permission to continue. *
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***************************************************************************/
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INT_PTR CALLBACK ConfirmHandler(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
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{
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WCHAR buf[100];
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WCHAR szRundll[] = L"rundll32.exe";
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WCHAR szDesktop[MAX_PATH];
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DWORD Len1, Len2;
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PACCESSINFO pAccessInfo;
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PROCESS_INFORMATION ProcessInfo;
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STARTUPINFO si;
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GetStartupInfo(&si);
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switch(message) {
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case WM_INITDIALOG:
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SetWindowLongPtr(hWnd, DWLP_USER, lParam);
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pAccessInfo = (PACCESSINFO)lParam;
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return ConfirmHandler_InitDialog(hWnd, pAccessInfo->hDesk, pAccessInfo->TitleID, pAccessInfo->wcTitle);
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case WM_COMMAND:
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pAccessInfo = (PACCESSINFO)GetWindowLongPtr(hWnd, DWLP_USER);
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switch (LOWORD(wParam)) {
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case IDOK:
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case IDCANCEL:
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EndDialog(hWnd, LOWORD(wParam));
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return TRUE;
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case IDHELP:
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// IDHELP (Settings... really) dismisses dialog with no changes
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EndDialog(hWnd, IDCANCEL);
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//
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// Spawn the correct help
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//
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lstrcpy(buf,L" Shell32.dll,Control_RunDLL access.cpl,,");
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switch (pAccessInfo->Feature) {
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case ACCESS_STICKYKEYS:
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case ACCESS_FILTERKEYS:
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case ACCESS_TOGGLEKEYS:
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default:
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lstrcat(buf,L"1");
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break;
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case ACCESS_MOUSEKEYS:
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lstrcat(buf,L"4");
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break;
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case ACCESS_HIGHCONTRAST:
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lstrcat(buf,L"3");
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break;
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}
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CreateProcess( szRundll, buf, NULL, NULL, FALSE, 0, NULL, NULL, &si, &ProcessInfo );
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return TRUE;
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break;
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default:
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return FALSE;
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}
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break;
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default:
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// fall thru rather than return FALSE to keep compiler happy
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break;
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}
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return FALSE;
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}
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DWORD MakeAccessDlg(PACCESSINFO pAccessInfo) {
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DWORD iRet = 0;
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HDESK hDeskOld;
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hDeskOld = GetThreadDesktop(GetCurrentThreadId());
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if (hDeskOld == NULL) return 0;
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pAccessInfo->hDesk = OpenInputDesktop(0, FALSE, MAXIMUM_ALLOWED);
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if (pAccessInfo->hDesk == NULL) return 0;
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if (LoadString(g_hInstance, pAccessInfo->TitleID, pAccessInfo->wcTitle, cchTitle)) {
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SetThreadDesktop(pAccessInfo->hDesk);
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if (!FindWindowEx(GetDesktopWindow(), NULL, (LPCTSTR)0x8002, pAccessInfo->wcTitle)) {
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iRet = (DWORD)DialogBoxParam(g_hInstance, MAKEINTRESOURCE(DLG_CONFIRM), NULL, ConfirmHandler, (LPARAM)pAccessInfo);
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}
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SetThreadDesktop(hDeskOld);
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}
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CloseDesktop(pAccessInfo->hDesk);
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return iRet;
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}
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/***************************************************************************
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* *
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* The thread opens the input desktopn, connects to it, and calls the *
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* notification dialog for the accessibility feature. *
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* *
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***************************************************************************/
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DWORD WINAPI StickyKeysNotification(BOOL fNotifReq) {
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DWORD iRet = IDCANCEL ;
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ACCESSINFO AccessInfo;
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STICKYKEYS sticky;
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DWORD dwS;
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BOOL b;
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AccessInfo.Feature = ACCESS_STICKYKEYS;
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AccessInfo.TitleID = ID_STICKY_TITLE;
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if ( fNotifReq )
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{
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iRet = MakeAccessDlg(&AccessInfo);
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}
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else
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iRet = IDOK;
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if (iRet)
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{
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sticky.cbSize = sizeof sticky;
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b = SystemParametersInfo(SPI_GETSTICKYKEYS, sizeof sticky, &sticky, 0);
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dwS= sticky.dwFlags;
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if (iRet & HOTKEYCODE) {
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sticky.dwFlags &= ~SKF_HOTKEYACTIVE;
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b = SystemParametersInfo(SPI_SETSTICKYKEYS, sizeof sticky, &sticky, SPIF_UPDATEINIFILE);
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iRet &= ~HOTKEYCODE;
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}
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if (iRet == IDOK) {
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sticky.dwFlags |= SKF_STICKYKEYSON;
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}
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if (dwS != sticky.dwFlags) {
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b = SystemParametersInfo(SPI_SETSTICKYKEYS, sizeof sticky, &sticky, 0);
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SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETSTICKYKEYS, FALSE,
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SMTO_ABORTIFHUNG, 5000, NULL);
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}
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iRet = 1;
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}
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return iRet;
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}
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/***************************************************************************
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* *
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* The thread opens the input desktopn, connects to it, and calls the *
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* notification dialog for the accessibility feature. *
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* *
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***************************************************************************/
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DWORD WINAPI FilterKeysNotification(BOOL fNotifReq) {
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DWORD iRet = IDCANCEL ;
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ACCESSINFO AccessInfo;
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FILTERKEYS filter;
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DWORD dwF;
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BOOL b;
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AccessInfo.Feature = ACCESS_FILTERKEYS;
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AccessInfo.TitleID = ID_FILTER_TITLE;
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if ( fNotifReq )
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{
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iRet = MakeAccessDlg(&AccessInfo);
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}
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else
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iRet = IDOK;
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if (iRet) {
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filter.cbSize = sizeof filter;
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b = SystemParametersInfo(SPI_GETFILTERKEYS, sizeof filter, &filter, 0);
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dwF = filter.dwFlags;
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if (iRet & HOTKEYCODE) {
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filter.dwFlags &= ~FKF_HOTKEYACTIVE;
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b = SystemParametersInfo(SPI_SETFILTERKEYS, sizeof filter, &filter, SPIF_UPDATEINIFILE);
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iRet &= ~HOTKEYCODE;
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}
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if (iRet == IDOK) {
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filter.dwFlags |= FKF_FILTERKEYSON;
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}
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if (dwF !=filter.dwFlags) {
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b = SystemParametersInfo(SPI_SETFILTERKEYS, sizeof filter, &filter, 0);
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// Broadcast a message. Being extra safe not to turn on filter keys
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// during logon. Send message to notify all specially systray: a-anilk
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SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETFILTERKEYS, FALSE,
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SMTO_ABORTIFHUNG, 5000, NULL);
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}
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iRet = 1;
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}
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return iRet;
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}
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/***************************************************************************
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* *
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* The thread opens the input desktopn, connects to it, and calls the *
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* notification dialog for the accessibility feature. *
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* *
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***************************************************************************/
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DWORD WINAPI ToggleKeysNotification(BOOL fNotifReq) {
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DWORD iRet = IDCANCEL;
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ACCESSINFO AccessInfo;
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TOGGLEKEYS toggle;
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DWORD dwT;
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BOOL b;
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toggle.cbSize = sizeof toggle;
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AccessInfo.Feature = ACCESS_TOGGLEKEYS;
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AccessInfo.TitleID = ID_TOGGLE_TITLE;
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if ( fNotifReq )
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{
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iRet = MakeAccessDlg(&AccessInfo);
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}
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else
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iRet = IDOK;
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if (iRet) {
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toggle.cbSize = sizeof toggle;
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b = SystemParametersInfo(SPI_GETTOGGLEKEYS, sizeof toggle, &toggle, 0);
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dwT = toggle.dwFlags;
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if (iRet & HOTKEYCODE) {
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toggle.dwFlags &= ~TKF_HOTKEYACTIVE;
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b = SystemParametersInfo(SPI_SETTOGGLEKEYS, sizeof toggle, &toggle, SPIF_UPDATEINIFILE);
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iRet &= ~HOTKEYCODE;
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}
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if (iRet == IDOK) {
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toggle.dwFlags |= TKF_TOGGLEKEYSON;
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}
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if (toggle.dwFlags != dwT) {
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b = SystemParametersInfo(SPI_SETTOGGLEKEYS, sizeof toggle, &toggle, 0);
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// Not required to send message, As it currently has no indicators...
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}
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iRet = 1;
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}
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return iRet;
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}
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/***************************************************************************
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* *
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* The thread opens the input desktopn, connects to it, and calls the *
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* notification dialog for the accessibility feature. *
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* *
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***************************************************************************/
|
||
|
|
DWORD WINAPI MouseKeysNotification(BOOL fNotifReq) {
|
||
|
|
DWORD iRet = IDCANCEL;
|
||
|
|
ACCESSINFO AccessInfo;
|
||
|
|
MOUSEKEYS mouse;
|
||
|
|
DWORD dwM;
|
||
|
|
BOOL b;
|
||
|
|
|
||
|
|
AccessInfo.Feature = ACCESS_MOUSEKEYS;
|
||
|
|
AccessInfo.TitleID = ID_MOUSE_TITLE;
|
||
|
|
|
||
|
|
if ( fNotifReq )
|
||
|
|
{
|
||
|
|
iRet = MakeAccessDlg(&AccessInfo);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
iRet = IDOK;
|
||
|
|
|
||
|
|
if (iRet) {
|
||
|
|
mouse.cbSize = sizeof mouse;
|
||
|
|
b = SystemParametersInfo(SPI_GETMOUSEKEYS, sizeof mouse, &mouse, 0);
|
||
|
|
dwM = mouse.dwFlags;
|
||
|
|
|
||
|
|
if (iRet & HOTKEYCODE) {
|
||
|
|
mouse.dwFlags &= ~MKF_HOTKEYACTIVE;
|
||
|
|
b = SystemParametersInfo(SPI_SETMOUSEKEYS, sizeof mouse, &mouse, SPIF_UPDATEINIFILE);
|
||
|
|
iRet &= ~HOTKEYCODE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (iRet == IDOK) {
|
||
|
|
mouse.dwFlags |= MKF_MOUSEKEYSON;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (mouse.dwFlags != dwM) {
|
||
|
|
b = SystemParametersInfo(SPI_SETMOUSEKEYS, sizeof mouse, &mouse, 0);
|
||
|
|
|
||
|
|
SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETMOUSEKEYS, FALSE,
|
||
|
|
SMTO_ABORTIFHUNG, 5000, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
iRet = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return iRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
/***************************************************************************
|
||
|
|
* *
|
||
|
|
* The thread opens the input desktopn, connects to it, and calls the *
|
||
|
|
* notification dialog for the accessibility feature. *
|
||
|
|
* *
|
||
|
|
***************************************************************************/
|
||
|
|
DWORD WINAPI HighContNotification(BOOL fNotifReq)
|
||
|
|
{
|
||
|
|
DWORD iRet = IDCANCEL ;
|
||
|
|
ACCESSINFO AccessInfo;
|
||
|
|
HIGHCONTRAST hc;
|
||
|
|
DWORD dwH;
|
||
|
|
BOOL b;
|
||
|
|
|
||
|
|
AccessInfo.Feature = ACCESS_HIGHCONTRAST;
|
||
|
|
AccessInfo.TitleID = ID_HC_TITLE;
|
||
|
|
|
||
|
|
if ( fNotifReq )
|
||
|
|
{
|
||
|
|
iRet = MakeAccessDlg(&AccessInfo);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
iRet = IDOK;
|
||
|
|
|
||
|
|
if (iRet) {
|
||
|
|
hc.cbSize = sizeof hc;
|
||
|
|
b = SystemParametersInfo(SPI_GETHIGHCONTRAST, sizeof hc, &hc, 0);
|
||
|
|
dwH = hc.dwFlags;
|
||
|
|
|
||
|
|
if (iRet & HOTKEYCODE) {
|
||
|
|
hc.dwFlags &= ~HCF_HOTKEYACTIVE;
|
||
|
|
b = SystemParametersInfo(SPI_SETHIGHCONTRAST, sizeof hc, &hc, SPIF_UPDATEINIFILE);
|
||
|
|
iRet &= ~HOTKEYCODE;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (iRet == IDOK) {
|
||
|
|
hc.dwFlags |= HCF_HIGHCONTRASTON;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hc.dwFlags != dwH) {
|
||
|
|
b = SystemParametersInfo(SPI_SETHIGHCONTRAST, sizeof hc, &hc, 0);
|
||
|
|
|
||
|
|
SendMessageTimeout(HWND_BROADCAST, WM_SETTINGCHANGE, SPI_SETHIGHCONTRAST, FALSE,
|
||
|
|
SMTO_ABORTIFHUNG, 5000, NULL);
|
||
|
|
}
|
||
|
|
iRet = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
return iRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|