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main.cpp
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main.cpp
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/* Copyright (c) 2015 Jacob Lifshay, Fork Ltd.
* This file is part of Prey.
*
* Prey is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Prey is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Prey. If not, see <http://www.gnu.org/licenses/>.
*/
#define NTDDI_VERSION (0x06020000)
#define _WIN32_WINNT (0x0602)
#if defined(UNICODE) && !defined(_UNICODE)
#define _UNICODE
#elif !defined(UNICODE) && defined(_UNICODE)
#define UNICODE
#endif
#define NOMINMAX
#include <windows.h>
#include <wtsapi32.h>
#include <tchar.h>
#include <sddl.h>
#include <propsys.h>
#include <propkey.h>
#include <shellapi.h>
#include <vector>
#include <memory>
#include <unordered_map>
#include <unordered_set>
#include <string>
#include <sstream>
#include <cstdint>
#include <cctype>
#include <iostream>
#include <initializer_list>
#include "resources.h"
#include "persistent.h"
#include "md5.h"
#include "string_cast.h"
#include "get_option.h"
#define REGISTRY_SETTINGS_LOCATION "Software\\Prey\\lock-screen"
#ifndef ERROR_ELEVATION_REQUIRED
#define ERROR_ELEVATION_REQUIRED (740)
#endif // ERROR_ELEVATION_REQUIRED
typedef BOOL (WINAPI *LPFN_ISWOW64PROCESS)(HANDLE, PBOOL);
#ifdef UNICODE
typedef std::wstring tstring;
typedef std::wostringstream tostringstream;
typedef std::wistringstream tistringstream;
typedef wget_option tget_option;
#define Tcout (::std::wcout)
#define Tcerr (::std::wcerr)
#else
typedef std::string tstring;
typedef std::ostringstream tostringstream;
typedef std::istringstream tistringstream;
typedef get_option tget_option;
#define Tcout (::std::cout)
#define Tcerr (::std::cerr)
#endif // UNICODE
template <typename Fn>
BOOL CALLBACK EnumDisplayMonitorsHelper(HMONITOR monitor, HDC monitorDC, LPRECT pMonitorRect, LPARAM arg)
{
Fn &f = *(Fn *)arg;
return f(monitor, monitorDC, pMonitorRect);
}
template <typename Fn>
BOOL EnumDisplayMonitors(HDC dc, LPCRECT pClipRect, Fn fn)
{
return ::EnumDisplayMonitors(dc, pClipRect, &EnumDisplayMonitorsHelper<Fn>, (LPARAM)std::addressof(fn));
}
template <typename Fn>
BOOL CALLBACK EnumWindowsHelper(HWND window, LPARAM arg)
{
Fn &f = *(Fn *)arg;
return f(window);
}
template <typename Fn>
BOOL EnumWindows(Fn fn)
{
return ::EnumWindows(&EnumWindowsHelper<Fn>, (LPARAM)std::addressof(fn));
}
class MD5 final
{
public:
struct Hash final
{
static constexpr std::size_t dataSize = 16;
std::uint8_t data[dataSize];
static bool parse(tstring str, Hash &retval)
{
str.erase(std::remove(str.begin(), str.end(), '"'), str.end());
if(str.size() != 2 * dataSize)
{
return false;
}
for(std::size_t i = 0; i < dataSize; i++)
{
if((char)str[i * 2] != str[i * 2] || !std::isxdigit((char)str[i * 2]))
{
return false;
}
if((char)str[i * 2 + 1] != str[i * 2 + 1] || !std::isxdigit((char)str[i * 2 + 1]))
{
return false;
}
tistringstream ss(str.substr(i * 2, 2));
int v;
ss >> std::hex >> v;
retval.data[i] = v;
}
return true;
}
bool operator ==(const Hash &rt) const
{
for(std::size_t i = 0; i < dataSize; i++)
{
if(data[i] != rt.data[i])
{
return false;
}
}
return true;
}
bool operator !=(const Hash &rt) const
{
return !operator ==(rt);
}
friend std::ostream &operator <<(std::ostream &os, const Hash &v)
{
std::ostringstream ss;
ss << std::hex;
for(std::size_t i = 0; i < dataSize; i++)
{
ss << (int)v.data[i] / 0x10 << (int)v.data[i] % 0x10;
}
return os << ss.str();
}
friend std::wostream &operator <<(std::wostream &os, const Hash &v)
{
std::wostringstream ss;
ss << std::hex;
for(std::size_t i = 0; i < dataSize; i++)
{
ss << (int)v.data[i] / 0x10 << (int)v.data[i] % 0x10;
}
return os << ss.str();
}
};
static MD5 make()
{
return MD5();
}
MD5 &append(const std::uint8_t *bytes, std::size_t length) &
{
if(length == 0)
return *this;
const std::size_t maxChunkSize = (std::size_t)INT_MAX / 2;
while(length > maxChunkSize)
{
md5_append(&state, bytes, maxChunkSize);
length -= maxChunkSize;
bytes += maxChunkSize;
}
md5_append(&state, bytes, length);
return *this;
}
MD5 &&append(const std::uint8_t *bytes, std::size_t length) &&
{
MD5 &v = *this;
return std::move(v.append(bytes, length));
}
Hash finish()
{
Hash retval;
md5_finish(&state, retval.data);
return retval;
}
static Hash hash(const std::uint8_t *bytes, std::size_t length)
{
return make().append(bytes, length).finish();
}
private:
MD5()
{
md5_init(&state);
}
md5_state_t state;
};
MD5::Hash hashPassword(tstring password)
{
std::string utf8password = string_cast<std::string>(password);
return MD5::hash((const std::uint8_t *)utf8password.data(), utf8password.size());
}
struct Window final
{
HWND window;
bool isPrimary;
Window(bool isPrimary = false)
: window(NULL),
isPrimary(isPrimary)
{
}
};
class Application final
{
private:
struct CreateData final
{
Window initWindow;
Application *application;
};
static LRESULT CALLBACK StaticWindowProcedure(HWND window, UINT messageId, WPARAM wParam, LPARAM lParam);
LRESULT WindowProcedure(Window &window, UINT messageId, WPARAM wParam, LPARAM lParam);
static LRESULT CALLBACK StaticKeyboardHookProcedure(int nCode, WPARAM wParam, LPARAM lParam);
static HRESULT EnableWindowSystemTouchGestures(HWND window, bool enabled);
void EnableTouchKeyboard(Window &parentWindow, bool enabled);
bool IsWow64Process();
bool ParseArgumentsAndCheckForHelpOption();
const LPCTSTR className = _T("MyClass");
const HINSTANCE instance;
const int nCmdShow;
std::unordered_map<HWND, Window> windows;
std::unordered_map<HMONITOR, HWND> monitors;
HWND passwordControl;
HWND unlockControl;
HWND startKeyboardControl;
HWND backgroundImageControl;
static constexpr UINT passwordControlId = 100;
static constexpr UINT unlockControlId = 101;
static constexpr UINT startKeyboardControlId = 102;
static constexpr UINT backgroundImageControlId = 103;
HHOOK keyboardHook;
HICON keyboardIcon;
MD5::Hash hashedPassword;
bool debugPassword = false;
tstring commandLine;
HBITMAP backgroundImage;
HBITMAP backgroundImageError;
std::vector<tstring> args;
bool verbose = false;
bool primaryCreated = false;
enum class Action
{
LockScreen,
Default = LockScreen,
Block,
Unblock,
Save,
ForceUnblock,
Version,
Dump,
};
public:
Application(HINSTANCE instance, tstring commandLine, int nCmdShow)
: instance(instance),
nCmdShow(nCmdShow),
commandLine(commandLine)
{
}
int operator()();
};
int WINAPI _tWinMain(HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPTSTR lpszArgument, int nCmdShow)
{
return Application(hThisInstance, lpszArgument, nCmdShow)();
}
bool Application::ParseArgumentsAndCheckForHelpOption()
{
tstring programName;
programName.reserve(128);
programName.resize(64);
DWORD programNameSize = programName.size();
do
{
programNameSize = GetModuleFileName(NULL, &programName[0], programName.size());
if(!programNameSize)
{
break;
}
programName.resize(programName.size() * 2);
}
while(programNameSize + 1 >= programName.size());
programName.resize(programNameSize);
args.assign(1, programName);
bool inQuotedString = false;
bool gotAnything = false;
bool gotOptionSlash = false;
bool isHelpOption = false;
bool startNewArg = true;
std::size_t backslashCount = 0;
auto parseChar = [&](_TINT ch)->void
{
if(ch == _T('\\'))
{
gotAnything = true;
gotOptionSlash = false;
isHelpOption = false;
backslashCount++;
return;
}
if(ch == _T('\"'))
{
gotAnything = true;
gotOptionSlash = false;
isHelpOption = false;
if(startNewArg)
{
startNewArg = false;
args.emplace_back();
}
if(backslashCount % 2 != 0)
{
args.back().append(backslashCount / 2, _T('\\'));
backslashCount = 0;
args.back() += _T('\"');
return;
}
args.back().append(backslashCount / 2, _T('\\'));
backslashCount = 0;
inQuotedString = !inQuotedString;
}
if(backslashCount > 0)
{
if(startNewArg)
{
startNewArg = false;
args.emplace_back();
}
args.back().append(backslashCount, _T('\\'));
backslashCount = 0;
}
if(ch == _TEOF)
return;
if(inQuotedString)
{
args.back() += ch;
return;
}
if(!gotAnything)
{
if(ch == _T(' ') || ch == _T('\t'))
{
return;
}
gotAnything = true;
if(startNewArg)
{
startNewArg = false;
args.emplace_back();
}
args.back() += ch;
if(ch == _T('/'))
gotOptionSlash = true;
return;
}
if(gotOptionSlash && ch == _T('?'))
{
gotOptionSlash = false;
if(startNewArg)
{
startNewArg = false;
args.emplace_back();
}
args.back() += ch;
isHelpOption = true;
return;
}
if(ch == _T(' ') || ch == _T('\t'))
{
startNewArg = true;
return;
}
gotOptionSlash = false;
isHelpOption = false;
if(startNewArg)
{
startNewArg = false;
args.emplace_back();
}
args.back() += ch;
};
for(TCHAR ch : commandLine)
{
parseChar(ch);
}
parseChar(_TEOF);
return isHelpOption;
}
int Application::operator()()
{
tstring password;
bool isHelpOption = ParseArgumentsAndCheckForHelpOption();
Action action = Action::LockScreen;
std::size_t actionSpecificationCount = 0;
tstring dumpFileName = _T("-");
bool writeHelpToStdErr = false;
bool tooManyArguments = false;
if(!isHelpOption)
{
const std::vector<tget_option::option> options = std::initializer_list<tget_option::option>
{
tget_option::option{_T("help"), tget_option::argument::no, nullptr, _T('h')},
tget_option::option{_T("block"), tget_option::argument::no, nullptr, _T('b')},
tget_option::option{_T("unblock"), tget_option::argument::no, nullptr, _T('u')},
tget_option::option{_T("save"), tget_option::argument::no, nullptr, _T('s')},
tget_option::option{_T("force-unblock"), tget_option::argument::no, nullptr, _T('U')},
tget_option::option{_T("version"), tget_option::argument::no, nullptr, _T('V')},
tget_option::option{_T("verbose"), tget_option::argument::no, nullptr, _T('v')},
tget_option::option{_T("dump"), tget_option::argument::optional, nullptr, _T('d')},
};
_TINT opt;
tget_option optionParser([&](tstring msg)
{
Tcerr << _T("lock-screen: ") << msg << std::endl;
writeHelpToStdErr = true;
});
while((opt = optionParser.getopt_long(args, _T("hbusUvd::"), options, nullptr)) != optionParser.end_flag())
{
switch(opt)
{
case _T('h'):
isHelpOption = true;
break;
case _T('b'):
action = Action::Block;
actionSpecificationCount++;
break;
case _T('u'):
action = Action::Unblock;
actionSpecificationCount++;
break;
case _T('s'):
action = Action::Save;
actionSpecificationCount++;
break;
case _T('U'):
action = Action::ForceUnblock;
actionSpecificationCount++;
break;
case _T('V'):
action = Action::Version;
actionSpecificationCount++;
break;
case _T('d'):
action = Action::Dump;
actionSpecificationCount++;
if(optionParser.has_arg)
{
dumpFileName = optionParser.optarg;
}
break;
case _T('v'):
verbose = true;
break;
default:
isHelpOption = true;
writeHelpToStdErr = true;
break;
}
}
std::size_t argumentsLeft = args.size() - optionParser.optind;
if(actionSpecificationCount > 0)
{
if(argumentsLeft > 0)
{
tooManyArguments = true;
}
}
else if(argumentsLeft > 1)
{
tooManyArguments = true;
}
else if(argumentsLeft == 1)
{
password = args[optionParser.optind];
}
}
if(!isHelpOption)
{
if(actionSpecificationCount > 1)
{
Tcerr << _T("lock-screen: multiple actions specified") << std::endl;
isHelpOption = true;
writeHelpToStdErr = true;
}
else if(tooManyArguments)
{
Tcerr << _T("lock-screen: too many arguments") << std::endl;
isHelpOption = true;
writeHelpToStdErr = true;
}
}
if(isHelpOption)
{
const LPCTSTR helpMessage = _T(""
"Usage:\tlock-screen [<options>]\n"
"\tlock-screen <password>\n"
"\tlock-screen <MD5-hashed password>\n"
"\n"
"Action-Options: \n"
"-b,--block\t\t\tSave, then block the\n"
"\t\t\t\tpersistent lock-screen settings.\n"
"\n"
"-d,--dump [<output file>]\tDisplay the persistent lock-screen settings.\n"
"\n"
"-s,--save\t\t\tSave the persistent lock-screen settings.\n"
"\n"
"-u,--unblock\t\t\tRestore the persistent lock-screen settings.\n"
"\n"
"-U,--force-unblock\t\tReset the persistent lock-screen settings.\n"
"\n"
"--version\t\t\tDisplay version information.\n"
"\n"
"Options: \n"
"-h,--help,/?\t\t\tShow this help.\n"
"\n"
"-v,--verbose\t\t\tEnable verbosity.\n");
if(writeHelpToStdErr)
{
Tcerr << helpMessage;
return 1;
}
Tcout << helpMessage;
return 0;
}
switch(action)
{
case Action::LockScreen:
break;
case Action::Block:
{
if(action_block()) {
return 0;
}
return 1;
}
case Action::Dump:
{
if(action_dump()) {
return 0;
}
return 1;
}
case Action::ForceUnblock:
{
if(action_force_unblock()) {
return 0;
}
return 1;
}
case Action::Save:
{
if (action_save()) {
return 0;
}
return 1;
}
case Action::Unblock:
{
if(action_unblock()) {
return 0;
} else {
return 1;
}
}
case Action::Version:
{
Tcout << _T(VERSION_STRING) << std::endl;
return 0;
}
}
if(password.empty())
{
debugPassword = true;
hashedPassword = hashPassword(_T("exit"));
if(verbose)
{
Tcout << _T("Using debug password: \"exit\"") << std::endl;
}
}
else if(!MD5::Hash::parse(password, hashedPassword))
{
hashedPassword = hashPassword(password);
}
if(verbose)
{
Tcout << _T("Hashed password: ") << hashedPassword << std::endl;
}
password = _T("");
CoInitializeEx(NULL, COINIT_APARTMENTTHREADED | COINIT_DISABLE_OLE1DDE);
keyboardIcon = LoadIcon(instance, MAKEINTRESOURCE(IDI_KEYBOARD));
backgroundImage = (HBITMAP)LoadImage(instance, MAKEINTRESOURCE(IDB_BACKGROUND), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
backgroundImageError = (HBITMAP)LoadImage(instance, MAKEINTRESOURCE(IDB_BACKGROUND_ERROR), IMAGE_BITMAP, 0, 0, LR_DEFAULTCOLOR);
WNDCLASSEX windowClass;
windowClass.hInstance = instance;
windowClass.lpszClassName = className;
windowClass.lpfnWndProc = StaticWindowProcedure;
windowClass.style = CS_HREDRAW | CS_VREDRAW;
windowClass.cbSize = sizeof(WNDCLASSEX);
windowClass.hIcon = LoadIcon(instance, MAKEINTRESOURCE(IDI_MAIN_ICON));
windowClass.hIconSm = windowClass.hIcon;
windowClass.hCursor = LoadCursor(NULL, IDC_ARROW);
windowClass.lpszMenuName = NULL;
windowClass.cbClsExtra = 0;
windowClass.cbWndExtra = 0;
windowClass.hbrBackground = (HBRUSH)COLOR_BACKGROUND;
if(!RegisterClassEx(&windowClass))
{
return 1;
}
action_dump();
DWORD sessId = WTSGetActiveConsoleSessionId();
while (sessId == 0)
{
sessId = WTSGetActiveConsoleSessionId();
}
EnumDisplayMonitors(NULL, NULL, [this](HMONITOR monitor, HDC monitorDC, LPRECT pMonitorRect)->BOOL
{
MONITORINFOEX monitorInfo;
monitorInfo.cbSize = sizeof(monitorInfo);
GetMonitorInfo(monitor, &monitorInfo);
CreateData createData;
createData.initWindow = Window((monitorInfo.dwFlags & MONITORINFOF_PRIMARY) == MONITORINFOF_PRIMARY);
createData.application = this;
HWND handle = CreateWindowEx(
#ifdef DEBUG
0,
#else
WS_EX_TOPMOST,
#endif
className,
_T("Lock Screen"),
WS_POPUP,
pMonitorRect->left,
pMonitorRect->top,
pMonitorRect->right - pMonitorRect->left,
pMonitorRect->bottom - pMonitorRect->top,
HWND_DESKTOP,
NULL,
instance,
(LPVOID)&createData);
monitors.emplace(monitor, handle);
if(verbose)
{
Tcout << _T("Created window for monitor: ") << monitorInfo.szDevice << _T(" (") << pMonitorRect->left << _T(", ") << pMonitorRect->top << _T(")-(") << pMonitorRect->right << _T(", ") << pMonitorRect->bottom << _T(")") << std::endl;
}
return TRUE;
});
primaryCreated = true;
/* Make the window visible on the screen */
for(auto i : windows)
{
ShowWindow(std::get<1>(i).window, nCmdShow);
}
SetFocus(passwordControl);
keyboardHook = SetWindowsHookEx(WH_KEYBOARD_LL, StaticKeyboardHookProcedure, NULL, 0);
if(verbose && keyboardHook != NULL)
{
Tcout << _T("Installed keyboard hook.") << std::endl;
}
else if(verbose)
{
Tcout << _T("Keyboard hook installation failed.") << std::endl;
}
/* Run the message loop. It will run until GetMessage() returns 0 */
MSG message;
for(BOOL retval = GetMessage(&message, NULL, 0, 0); retval != 0; retval = GetMessage(&message, NULL, 0, 0))
{
if(retval == -1)
{
return 1;
}
bool handled = false;
for(auto i : windows)
{
if(IsDialogMessage(std::get<1>(i).window, &message))
{
handled = true;
break;
}
}
if(handled)
{
continue;
}
/* Translate virtual-key messages into character messages */
TranslateMessage(&message);
/* Send message to WindowProcedure */
DispatchMessage(&message);
}
if(keyboardHook)
{
UnhookWindowsHookEx(keyboardHook);
if(verbose)
{
Tcout << _T("Removed keyboard hook.") << std::endl;
}
}
/* The program return-value is the value that we gave PostQuitMessage() */
return message.wParam;
}
LRESULT CALLBACK Application::StaticWindowProcedure(HWND hwnd, UINT messageId, WPARAM wParam, LPARAM lParam)
{
Application *application = (Application *)GetWindowLongPtr(hwnd, GWLP_USERDATA);
if(application)
{
if (application->windows.find(hwnd) == application->windows.end())
{
LPCREATESTRUCT createStruct = (LPCREATESTRUCT)lParam;
CreateData *createData = (CreateData *)createStruct->lpCreateParams;
application->windows.emplace(hwnd, createData->initWindow);
}
Window &window = application->windows.at(hwnd);
return application->WindowProcedure(window, messageId, wParam, lParam);
}
if(messageId == WM_NCCREATE || messageId == WM_CREATE)
{
LPCREATESTRUCT createStruct = (LPCREATESTRUCT)lParam;
CreateData *createData = (CreateData *)createStruct->lpCreateParams;
application = createData->application;
SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)application);
createData->initWindow.window = hwnd;
return application->WindowProcedure(std::get<1>(*std::get<0>(application->windows.emplace(hwnd, createData->initWindow))), messageId, wParam, lParam);
}
return DefWindowProc(hwnd, messageId, wParam, lParam);
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT Application::WindowProcedure(Window &window, UINT messageId, WPARAM wParam, LPARAM lParam)
{
switch(messageId) /* handle the messages */
{
case WM_CREATE:
{
if(window.isPrimary)
{
RECT windowRect;
GetClientRect(window.window, &windowRect);
POINT windowCenter;
windowCenter.x = (windowRect.right - windowRect.left) / 2;
windowCenter.y = (windowRect.bottom - windowRect.top) / 2;
backgroundImageControl = CreateWindowEx(0,
_T("STATIC"),
NULL,
WS_CHILD | WS_VISIBLE | SS_BITMAP | SS_CENTERIMAGE,
windowCenter.x - 162,
windowCenter.y - 207,
324,
374,
window.window,
(HMENU)backgroundImageControlId,
instance,
NULL);
SendMessage(backgroundImageControl, STM_SETIMAGE, (WPARAM)IMAGE_BITMAP, (LPARAM)backgroundImage);
SIZE editSize = {290, 30};
RECT editRect;
editRect.left = windowCenter.x - editSize.cx / 2;
editRect.right = editRect.left + editSize.cx;
editRect.top = windowCenter.y - editSize.cy / 2;
editRect.bottom = editRect.top + editSize.cy;
passwordControl = CreateWindowEx(0,
_T("EDIT"),
_T(""),
WS_CHILD | WS_VISIBLE | WS_TABSTOP | ES_PASSWORD,
editRect.left,
editRect.top,
editRect.right - editRect.left,
editRect.bottom - editRect.top,
window.window,
(HMENU)passwordControlId,
instance,
NULL);
LOGFONT passwordControlFontDescriptor;
GetObject(GetStockObject(DEFAULT_GUI_FONT), sizeof(passwordControlFontDescriptor), &passwordControlFontDescriptor);
passwordControlFontDescriptor.lfWidth = 0;
HDC passwordControlDC = GetDC(passwordControl);
passwordControlFontDescriptor.lfHeight = 30;
ReleaseDC(passwordControl, passwordControlDC);
HFONT passwordControlFont = CreateFontIndirect(&passwordControlFontDescriptor);
if(passwordControlFont != NULL)
{
SendMessage(passwordControl, WM_SETFONT, (WPARAM)passwordControlFont, MAKELPARAM(FALSE, 0));
}
SendMessage(passwordControl, WM_SETTEXT, (WPARAM)NULL, (LPARAM)_T(""));
SendMessage(passwordControl, EM_SETPASSWORDCHAR, (WPARAM)_T('●'), (LPARAM)NULL);
RECT unlockRect = editRect;
unlockRect.left = editRect.right + 5;
unlockRect.right = unlockRect.left + 50;
unlockControl = CreateWindowEx(0,
_T("BUTTON"),
_T("Unlock"),
WS_CHILD | WS_TABSTOP | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | BS_DEFPUSHBUTTON | BS_PUSHBUTTON | BS_OWNERDRAW,
unlockRect.left,
unlockRect.top,
unlockRect.right - unlockRect.left,
unlockRect.bottom - unlockRect.top,
window.window,
(HMENU)unlockControlId,
instance,
NULL);
RECT startKeyboardRect;
startKeyboardRect.right = windowRect.right - 5;
startKeyboardRect.bottom = windowRect.bottom - 5;
startKeyboardRect.top = startKeyboardRect.bottom - 64;
startKeyboardRect.left = startKeyboardRect.right - 64;
startKeyboardControl = CreateWindowEx(0,
_T("BUTTON"),
_T("On-Screen Keyboard"),
WS_CHILD | WS_VISIBLE | WS_CLIPCHILDREN | WS_CLIPSIBLINGS | BS_OWNERDRAW,
startKeyboardRect.left,
startKeyboardRect.top,
startKeyboardRect.right - startKeyboardRect.left,
startKeyboardRect.bottom - startKeyboardRect.top,
window.window,
(HMENU)startKeyboardControlId,
instance,
NULL);
}
EnableWindowSystemTouchGestures(window.window, false);
break;
}
case WM_DESTROY:
PostQuitMessage(66); /* send a WM_QUIT to the message queue */
EnableTouchKeyboard(window, false);
break;
case WM_DISPLAYCHANGE:
{
EnumDisplayMonitors(NULL, NULL, [this, lParam, window ](HMONITOR monitor, HDC monitorDC, LPRECT pMonitorRect)->BOOL
{
if (monitors.find(monitor) == monitors.end())
{
MONITORINFOEX monitorInfo;
monitorInfo.cbSize = sizeof(monitorInfo);
GetMonitorInfo(monitor, &monitorInfo);
if ((monitorInfo.dwFlags & MONITORINFOF_PRIMARY) != MONITORINFOF_PRIMARY)
{
CreateData createData;
createData.initWindow = Window((monitorInfo.dwFlags & MONITORINFOF_PRIMARY) == MONITORINFOF_PRIMARY);
createData.application = this;
HWND handle = CreateWindowEx(
#ifdef DEBUG
0,
#else
WS_EX_TOPMOST,
#endif
className,
_T("Lock Screen"),
WS_POPUP,
pMonitorRect->left,
pMonitorRect->top,
pMonitorRect->right - pMonitorRect->left,
pMonitorRect->bottom - pMonitorRect->top,
HWND_DESKTOP,
NULL,
instance,
(LPVOID)&createData);
if (handle == NULL)
{
wchar_t err[256];
FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(),
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), err, 255, NULL);
Tcerr << _T("error ") << err << std::endl;
}
else
{
windows.emplace(handle, window);
monitors.emplace(monitor, handle);
ShowWindow(handle, nCmdShow);
if(verbose)
{
Tcout << _T("Created window for monitor: ") << monitorInfo.szDevice << _T(" (") << pMonitorRect->left << _T(", ") << pMonitorRect->top << _T(")-(") << pMonitorRect->right << _T(", ") << pMonitorRect->bottom << _T(")") << std::endl;
}
}
}
}
return TRUE;
});
break;
}
case WM_ERASEBKGND:
return 0;
case WM_COMMAND:
{
switch(LOWORD(wParam))
{
case unlockControlId: