mirror of
https://github.com/dhewm/dhewm3.git
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736ec20d4d
Don't include the lazy precompiled.h everywhere, only what's required for the compilation unit. platform.h needs to be included instead to provide all essential defines and types. All includes use the relative path to the neo or the game specific root. Move all idlib related includes from idlib/Lib.h to precompiled.h. precompiled.h still exists for the MFC stuff in tools/. Add some missing header guards.
140 lines
4.5 KiB
C++
140 lines
4.5 KiB
C++
/*
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===========================================================================
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Doom 3 GPL Source Code
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Copyright (C) 1999-2011 id Software LLC, a ZeniMax Media company.
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This file is part of the Doom 3 GPL Source Code ("Doom 3 Source Code").
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Doom 3 Source Code is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Doom 3 Source Code is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Doom 3 Source Code. If not, see <http://www.gnu.org/licenses/>.
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In addition, the Doom 3 Source Code is also subject to certain additional terms. You should have received a copy of these additional terms immediately following the terms and conditions of the GNU General Public License which accompanied the Doom 3 Source Code. If not, please request a copy in writing from id Software at the address below.
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If you have questions concerning this license or the applicable additional terms, you may contact in writing id Software LLC, c/o ZeniMax Media Inc., Suite 120, Rockville, Maryland 20850 USA.
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===========================================================================
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*/
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#include "sys/platform.h"
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#include "sys/win32/win_local.h"
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//
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// This file implements the low-level keyboard hook that traps the task keys.
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//
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// Magic registry key/value for "Remove Task Manager" policy.
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LPCTSTR KEY_DisableTaskMgr = "Software\\Microsoft\\Windows\\CurrentVersion\\Policies\\System";
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LPCTSTR VAL_DisableTaskMgr = "DisableTaskMgr";
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// The section is SHARED among all instances of this DLL.
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// A low-level keyboard hook is always a system-wide hook.
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#pragma data_seg (".mydata")
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HHOOK g_hHookKbdLL = NULL; // hook handle
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BOOL g_bBeep = FALSE; // beep on illegal key
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#pragma data_seg ()
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#pragma comment(linker, "/SECTION:.mydata,RWS") // tell linker: make it shared
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/*
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================
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MyTaskKeyHookLL
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Low-level keyboard hook:
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Trap task-switching keys by returning without passing along.
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================
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*/
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LRESULT CALLBACK MyTaskKeyHookLL( int nCode, WPARAM wp, LPARAM lp ) {
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KBDLLHOOKSTRUCT *pkh = (KBDLLHOOKSTRUCT *) lp;
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if ( nCode == HC_ACTION ) {
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BOOL bCtrlKeyDown = GetAsyncKeyState( VK_CONTROL)>>((sizeof(SHORT) * 8) - 1 );
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if ( ( pkh->vkCode == VK_ESCAPE && bCtrlKeyDown ) // Ctrl+Esc
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|| ( pkh->vkCode == VK_TAB && pkh->flags & LLKHF_ALTDOWN ) // Alt+TAB
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|| ( pkh->vkCode == VK_ESCAPE && pkh->flags & LLKHF_ALTDOWN ) // Alt+Esc
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|| ( pkh->vkCode == VK_LWIN || pkh->vkCode == VK_RWIN ) // Start Menu
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) {
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if ( g_bBeep && ( wp == WM_SYSKEYDOWN || wp == WM_KEYDOWN ) ) {
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MessageBeep( 0 ); // beep on downstroke if requested
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}
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return 1; // return without processing the key strokes
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}
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}
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return CallNextHookEx( g_hHookKbdLL, nCode, wp, lp );
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}
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/*
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================
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AreTaskKeysDisabled
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Are task keys disabled--ie, is hook installed?
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Note: This assumes there's no other hook that does the same thing!
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================
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*/
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BOOL AreTaskKeysDisabled() {
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return g_hHookKbdLL != NULL;
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}
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/*
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================
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IsTaskMgrDisabled
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================
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*/
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BOOL IsTaskMgrDisabled() {
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HKEY hk;
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if ( RegOpenKey( HKEY_CURRENT_USER, KEY_DisableTaskMgr, &hk ) != ERROR_SUCCESS ) {
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return FALSE; // no key ==> not disabled
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}
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DWORD val = 0;
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DWORD len = 4;
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return RegQueryValueEx( hk, VAL_DisableTaskMgr, NULL, NULL, (BYTE*)&val, &len ) == ERROR_SUCCESS && val == 1;
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}
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/*
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================
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DisableTaskKeys
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================
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*/
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void DisableTaskKeys( BOOL bDisable, BOOL bBeep, BOOL bTaskMgr ) {
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// task keys (Ctrl+Esc, Alt-Tab, etc.)
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if ( bDisable ) {
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if ( !g_hHookKbdLL ) {
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g_hHookKbdLL = SetWindowsHookEx( WH_KEYBOARD_LL, MyTaskKeyHookLL, win32.hInstance, 0 );
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}
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} else if ( g_hHookKbdLL != NULL ) {
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UnhookWindowsHookEx( g_hHookKbdLL );
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g_hHookKbdLL = NULL;
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}
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g_bBeep = bBeep;
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// task manager (Ctrl+Alt+Del)
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if ( bTaskMgr ) {
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HKEY hk;
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if ( RegOpenKey( HKEY_CURRENT_USER, KEY_DisableTaskMgr, &hk ) != ERROR_SUCCESS ) {
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RegCreateKey( HKEY_CURRENT_USER, KEY_DisableTaskMgr, &hk );
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}
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if ( bDisable ) {
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// disable TM: set policy = 1
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DWORD val = 1;
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RegSetValueEx( hk, VAL_DisableTaskMgr, NULL, REG_DWORD, (BYTE*)&val, sizeof(val) );
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} else {
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// enable TM: remove policy
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RegDeleteValue( hk,VAL_DisableTaskMgr );
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}
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}
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}
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