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main.c
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main.c
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/*
* hide-volume-osd-c is a language port of HideVolumeOSD project, written for
* fair use.
*
* HideVolumeOSD Copyright (C) 2016-2021 UnlimitedStack and contributors
*
* This file is a part of hide-volume-osd-c project
* Copyright (c) 2021 Philosoph228 <philosoph228@gmail.com>
*
* This program 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, version 3.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <windows.h>
#include <windowsx.h>
#include <commctrl.h>
#include <strsafe.h>
#include <assert.h>
#include <uxtheme.h>
#include "resource.h"
#define LR_FAILED(x) (x != ERROR_SUCCESS)
#define LR_SUCCEEDED(x) (x == ERROR_SUCCESS)
#define HVWM_TRAYICON (WM_APP + 100)
const WCHAR szAppName[] = L"HideVolumeOSD-C";
const WCHAR szAppMutex[] = L"{F95D0266-5DA1-4701-8188-78F17E2F98F}";
HWND hWndInject;
HWND hMsgWindow;
enum {
STATUS_UNKNOWN,
STATUS_HIDDEN,
STATUS_SHOWN,
};
int g_status;
enum {
ICON_THEME_AUTO,
ICON_THEME_LIGHT,
ICON_THEME_DARK
};
typedef enum {
AUTORUN_NOT_SET,
AUTORUN_SET,
AUTORUN_DIFFER_LOCATION,
} AUTORUNSTATE, *PAUTORUNSTATE;
typedef struct _tagSETTINGS {
BOOL bShowTrayIcon;
int iIconTheme;
} SETTINGS, * PSETTINGS;
SETTINGS g_settings;
BOOL Init();
void HideOSD();
void ShowOSD();
HWND FindOSDWindow();
BOOL CheckInstance(LPCWSTR);
BOOL SystemUsesLightTheme(PBOOL);
void ShowOSD()
{
if (!IsWindow(hWndInject))
{
if (!Init()) return;
}
ShowWindow(hWndInject, SW_RESTORE);
/* Show window on the screen */
keybd_event(VK_VOLUME_UP, 0, 0, 0);
keybd_event(VK_VOLUME_DOWN, 0, 0, 0);
}
void HideOSD()
{
if (!IsWindow(hWndInject))
{
if (!Init()) return;
}
ShowWindow(hWndInject, SW_MINIMIZE);
}
BOOL CheckInstance(LPCWSTR szMutexName)
{
if (CreateMutex(NULL, FALSE, szMutexName) == NULL ||
GetLastError() == ERROR_ALREADY_EXISTS ||
GetLastError() == ERROR_ACCESS_DENIED)
{
return TRUE;
}
return FALSE;
}
BOOL Init()
{
hWndInject = FindOSDWindow();
int count = 1;
while (hWndInject == NULL && count < 9)
{
keybd_event(VK_VOLUME_UP, 0, 0, 0);
keybd_event(VK_VOLUME_DOWN, 0, 0, 0);
hWndInject = FindOSDWindow();
/* Quadratic backoff if the window is not found */
Sleep(1000 * (count * count));
count++;
}
/* Final try */
hWndInject = FindOSDWindow();
if (hWndInject == NULL)
{
return FALSE;
}
return TRUE;
}
extern inline HRESULT QuoteString(LPWSTR pszDest, DWORD dwDestSize,
LPWSTR pszInput)
{
return StringCchPrintf(pszDest, dwDestSize, L"\"%s\"", pszInput);
}
void HideTrayIcon()
{
NOTIFYICONDATA nid = { 0 };
ZeroMemory(&nid, sizeof(nid));
nid.cbSize = sizeof(nid);
nid.hWnd = hMsgWindow;
nid.uID = 1;
Shell_NotifyIcon(NIM_DELETE, &nid);
}
extern inline UINT GetDarkIconId(int nStatus)
{
switch (nStatus)
{
case STATUS_HIDDEN:
return IDI_TRAY_HIDDEN_DARK;
case STATUS_SHOWN:
return IDI_TRAY_SHOWN_DARK;
default:
return IDI_TRAY_DEFAULT_DARK;
}
}
extern inline UINT GetLightIconId(int nStatus)
{
switch (nStatus)
{
case STATUS_HIDDEN:
return IDI_TRAY_HIDDEN_LIGHT;
case STATUS_SHOWN:
return IDI_TRAY_SHOWN_LIGHT;
default:
return IDI_TRAY_DEFAULT_LIGHT;
}
}
HICON GetStatusIcon(int nStatus)
{
HICON hIcon;
UINT uIconId;
switch (g_settings.iIconTheme)
{
case ICON_THEME_AUTO:
{
BOOL bResult;
BOOL bLightTaskbar;
bResult = SystemUsesLightTheme(&bLightTaskbar);
assert(bResult);
if (bResult)
{
uIconId = bLightTaskbar
? GetDarkIconId(nStatus)
: GetLightIconId(nStatus);
}
else {
MessageBox(NULL, L"Couldn't open taskbar theme registry key", NULL,
MB_OK | MB_ICONWARNING);
uIconId = GetLightIconId(nStatus);
}
}
break;
case ICON_THEME_DARK:
uIconId = GetDarkIconId(nStatus);
break;
case ICON_THEME_LIGHT:
uIconId = GetLightIconId(nStatus);
break;
}
hIcon = LoadIcon(GetModuleHandle(NULL), MAKEINTRESOURCE(uIconId));
assert(hIcon);
if (!hIcon)
MessageBox(NULL, L"Couldn't load tray icon", NULL, MB_OK | MB_ICONWARNING);
return hIcon;
}
void ShowTrayIcon()
{
NOTIFYICONDATA nid;
HICON hIcon;
hIcon = GetStatusIcon(g_status);
ZeroMemory(&nid, sizeof(nid));
nid.cbSize = sizeof(nid);
nid.hWnd = hMsgWindow;
nid.uID = 1;
nid.uFlags = NIF_ICON | NIF_TIP | NIF_MESSAGE;
nid.uCallbackMessage = HVWM_TRAYICON;
nid.uVersion = NOTIFYICON_VERSION_4;
nid.hIcon = hIcon;
StringCchCopy(nid.szTip, 128, szAppName);
Shell_NotifyIcon(NIM_ADD, &nid);
Shell_NotifyIcon(NIM_SETVERSION, &nid);
}
void SetTrayStatusIcon(int nStatus)
{
NOTIFYICONDATA nid;
ZeroMemory(&nid, sizeof(nid));
nid.cbSize = sizeof(nid);
nid.hWnd = hMsgWindow;
nid.uID = 1;
nid.uFlags = NIF_ICON;
nid.hIcon = GetStatusIcon(nStatus);
Shell_NotifyIcon(NIM_MODIFY, &nid);
}
void ApplyIconTheme()
{
SetTrayStatusIcon(g_status);
}
extern inline LRESULT OpenAutorunKey(HKEY* phKey)
{
return RegCreateKey(HKEY_CURRENT_USER,
L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Run", phKey);
}
extern inline LRESULT OpenSoftwareKey(HKEY* phKey)
{
return RegCreateKey(HKEY_CURRENT_USER,
L"Software\\Aragajaga\\HideVolumeOSDC", phKey);
}
BOOL SystemUsesLightTheme(PBOOL pBool)
{
BOOL bResult;
LRESULT lResult;
HKEY hKey;
DWORD dwType;
DWORD dwValue;
DWORD dwLength;
bResult = FALSE;
lResult = RegOpenKeyEx(HKEY_CURRENT_USER,
L"Software\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize",
0, KEY_READ, &hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
dwLength = sizeof(dwValue);
lResult = RegQueryValueEx(hKey, L"SystemUsesLightTheme", NULL, &dwType,
(PBYTE) &dwValue, &dwLength);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
goto finish;
assert(dwType == REG_DWORD);
if (dwType != REG_DWORD)
goto finish;
*pBool = dwValue ? TRUE : FALSE;
bResult = TRUE;
finish:
RegCloseKey(hKey);
return bResult;
}
BOOL GetAutorunPath(LPWSTR lpszPath, DWORD dwLength, PDWORD dwWritten)
{
BOOL bReturn;
LRESULT lResult;
HKEY hKey;
DWORD dwType;
bReturn = FALSE;
lResult = OpenAutorunKey(&hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
lResult = RegQueryValueEx(hKey, szAppName, NULL, &dwType, (LPBYTE) lpszPath,
&dwLength);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
goto finish;
switch (dwType)
{
case REG_SZ:
case REG_MULTI_SZ:
case REG_EXPAND_SZ:
break;
default:
goto finish;
}
*dwWritten = dwLength;
bReturn = TRUE;
finish:
RegCloseKey(hKey);
return bReturn;
}
BOOL IsAutorunSet(PAUTORUNSTATE pARState)
{
BOOL bResult;
LRESULT lResult;
HRESULT hResult;
HKEY hKey;
DWORD dwType;
WCHAR szPath[MAX_PATH];
WCHAR szCurrentImage[MAX_PATH];
WCHAR szCurrentImageQuoted[MAX_PATH];
DWORD dwWritten;
assert(pARState);
if (!pARState)
return FALSE;
bResult = FALSE;
ZeroMemory(szPath, sizeof(szPath));
lResult = OpenAutorunKey(&hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
dwWritten = MAX_PATH;
lResult = RegQueryValueEx(hKey, szAppName, NULL, &dwType, (LPBYTE) szPath,
&dwWritten);
assert(LR_SUCCEEDED(lResult) || lResult == ERROR_FILE_NOT_FOUND);
if (LR_FAILED(lResult))
{
if (lResult == ERROR_FILE_NOT_FOUND)
{
*pARState = AUTORUN_NOT_SET;
bResult = TRUE;
}
goto finish;
}
switch (dwType)
{
case REG_SZ:
case REG_MULTI_SZ:
case REG_EXPAND_SZ:
break;
default:
goto finish;
}
if (!dwWritten)
goto finish;
dwWritten = GetModuleFileName(NULL, szCurrentImage, MAX_PATH);
assert(dwWritten);
if (!dwWritten)
goto finish;
hResult = QuoteString(szCurrentImageQuoted, MAX_PATH, szCurrentImage);
assert(SUCCEEDED(hResult));
if (FAILED(hResult))
goto finish;
*pARState = wcscmp(szCurrentImageQuoted, szPath) == 0
? AUTORUN_SET
: AUTORUN_DIFFER_LOCATION;
bResult = TRUE;
finish:
RegCloseKey(hKey);
return bResult;
}
void InitDefaultSettings(PSETTINGS pSettings)
{
pSettings->bShowTrayIcon = TRUE;
pSettings->iIconTheme = 0;
}
BOOL WriteSettingsToRegistry(HKEY hKey, PSETTINGS pSettings)
{
LRESULT lResult;
DWORD dwShowIcon;
DWORD dwIconTheme;
dwShowIcon = pSettings->bShowTrayIcon;
dwIconTheme = pSettings->iIconTheme;
lResult = RegSetValueEx(hKey, L"ShowTrayIcon", 0, REG_DWORD,
(BYTE *)&dwShowIcon, sizeof(dwShowIcon));
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
lResult = RegSetValueEx(hKey, L"IconTheme", 0, REG_DWORD,
(BYTE *)&dwIconTheme, sizeof(dwIconTheme));
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
return TRUE;
}
BOOL WriteSettingsToRegistryDummy(PSETTINGS pSettings)
{
BOOL bResult;
LRESULT lResult;
HKEY hKey;
lResult = OpenSoftwareKey(&hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
bResult = WriteSettingsToRegistry(hKey, pSettings);
RegCloseKey(hKey);
return bResult;
}
BOOL PreloadSettings()
{
LRESULT lResult;
HKEY hKey;
SETTINGS settings;
ZeroMemory(&settings, sizeof(settings));
lResult = OpenSoftwareKey(&hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
return TRUE;
}
BOOL WriteDefaultSettings(HKEY hKey, PSETTINGS pSettings)
{
InitDefaultSettings(pSettings);
return WriteSettingsToRegistry(hKey, pSettings);
}
BOOL ReadSettingsFromRegistry(PSETTINGS pSettings)
{
BOOL bReturn;
LRESULT lResult;
HKEY hKey;
DWORD dwType;
DWORD dwValue;
DWORD dwBytes;
SETTINGS settings;
bReturn = FALSE;
lResult = OpenSoftwareKey(&hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
dwBytes = sizeof(dwValue);
lResult = RegQueryValueEx(hKey, L"ShowTrayIcon", NULL, &dwType,
(PBYTE) &dwValue, &dwBytes);
assert(LR_SUCCEEDED(lResult) || lResult == ERROR_FILE_NOT_FOUND);
if (lResult == ERROR_FILE_NOT_FOUND)
{
if (WriteDefaultSettings(hKey, pSettings))
{
goto loaded;
}
else {
goto finish;
}
}
else if (LR_FAILED(lResult)) {
goto finish;
}
if (dwType != REG_DWORD)
goto finish;
settings.bShowTrayIcon = dwValue ? TRUE : FALSE;
dwBytes = sizeof(dwValue);
lResult = RegQueryValueEx(hKey, L"IconTheme", NULL, &dwType, (PBYTE) &dwValue,
&dwBytes);
assert(LR_SUCCEEDED(lResult) || lResult == ERROR_FILE_NOT_FOUND);
if (lResult == ERROR_FILE_NOT_FOUND)
{
if (WriteDefaultSettings(hKey, &settings))
{
goto loaded;
}
else {
goto finish;
}
}
else if (LR_FAILED(lResult)) {
goto finish;
}
if (dwType != REG_DWORD)
goto finish;
settings.iIconTheme = dwValue;
loaded:
memcpy_s(pSettings, sizeof(SETTINGS), &settings, sizeof(SETTINGS));
bReturn = TRUE;
finish:
RegCloseKey(hKey);
return bReturn;
}
BOOL AddAutorunEntry()
{
BOOL bReturn;
LRESULT lResult;
HRESULT hResult;
HKEY hKey;
WCHAR szPath[MAX_PATH];
WCHAR szPathQuoted[MAX_PATH];
DWORD dwWritten;
bReturn = FALSE;
dwWritten = GetModuleFileName(NULL, szPath, MAX_PATH);
assert(dwWritten);
if (!dwWritten)
return FALSE;
hResult = QuoteString(szPathQuoted, MAX_PATH, szPath);
assert(SUCCEEDED(hResult));
if (FAILED(hResult))
goto finish;
lResult = OpenAutorunKey(&hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
goto finish;
lResult = RegSetValueEx(hKey, szAppName, 0, REG_SZ, (BYTE *)szPathQuoted,
(wcslen(szPathQuoted)+1)*2);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
goto finish;
bReturn = TRUE;
finish:
RegCloseKey(hKey);
return bReturn;
}
BOOL RemoveAutorunEntry()
{
BOOL bResult;
LRESULT lResult;
HKEY hKey;
bResult = FALSE;
lResult = OpenAutorunKey(&hKey);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
return FALSE;
lResult = RegDeleteValue(hKey, szAppName);
assert(LR_SUCCEEDED(lResult));
if (LR_FAILED(lResult))
goto finish;
bResult = TRUE;
finish:
RegCloseKey(hKey);
return bResult;
}
SETTINGS g_settings;
void SaveSettings(PSETTINGS pSettings)
{
WriteSettingsToRegistryDummy(pSettings);
}
INT_PTR CALLBACK SettingsDlgProc(HWND hWnd, UINT message, WPARAM wParam,
LPARAM lParam)
{
UNREFERENCED_PARAMETER(lParam)
switch (message)
{
case WM_INITDIALOG:
{
AUTORUNSTATE ars;
IsAutorunSet(&ars);
switch (ars)
{
case AUTORUN_SET:
Button_SetCheck(GetDlgItem(hWnd, IDB_AUTORUN), BST_CHECKED);
break;
case AUTORUN_DIFFER_LOCATION:
Button_SetCheck(GetDlgItem(hWnd, IDB_AUTORUN), BST_INDETERMINATE);
break;
case AUTORUN_NOT_SET:
default:
break;
}
ReadSettingsFromRegistry(&g_settings);
if (g_settings.bShowTrayIcon)
Button_SetCheck(GetDlgItem(hWnd, IDB_SHOWTRAYICON), BST_CHECKED);
SendDlgItemMessage(hWnd, IDCB_THEME, CB_ADDSTRING, 0, (LPARAM) L"Auto select");
SendDlgItemMessage(hWnd, IDCB_THEME, CB_ADDSTRING, 0, (LPARAM) L"Light");
SendDlgItemMessage(hWnd, IDCB_THEME, CB_ADDSTRING, 0, (LPARAM) L"Dark");
SendDlgItemMessage(hWnd, IDCB_THEME, CB_SETCURSEL, g_settings.iIconTheme, 0);
}
break;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDOK:
EndDialog(hWnd, IDOK);
break;
case IDCANCEL:
EndDialog(hWnd, IDCANCEL);
break;
case IDCB_THEME:
switch (HIWORD(wParam))
{
case CBN_SELCHANGE:
{
int iTheme = -1;
int nSel = SendDlgItemMessage(hWnd, IDCB_THEME, CB_GETCURSEL, 0, 0);
switch (nSel)
{
case 0:
iTheme = ICON_THEME_AUTO;
break;
case 1:
iTheme = ICON_THEME_LIGHT;
break;
case 2:
iTheme = ICON_THEME_DARK;
break;
}
g_settings.iIconTheme = iTheme;
WriteSettingsToRegistryDummy(&g_settings);
ApplyIconTheme();
}
break;
}
break;
case IDB_SHOWTRAYICON:
if (HIWORD(wParam) == BN_CLICKED)
{
BOOL bChecked = Button_GetCheck(GetDlgItem(hWnd, IDB_SHOWTRAYICON));
if (bChecked)
{
ShowTrayIcon();
g_settings.bShowTrayIcon = TRUE;
WriteSettingsToRegistryDummy(&g_settings);
}
else {
HideTrayIcon();
g_settings.bShowTrayIcon = FALSE;
WriteSettingsToRegistryDummy(&g_settings);
}
}
break;
case IDB_AUTORUN:
if (HIWORD(wParam) == BN_CLICKED)
{
int iCheck;
iCheck = Button_GetCheck(GetDlgItem(hWnd, IDB_AUTORUN));
switch (iCheck)
{
case BST_INDETERMINATE:
{
WCHAR szMessage[1024] = { 0 };
WCHAR szAutorunPath[MAX_PATH] = { 0 };
int iSelect;
DWORD dwWritten;
GetAutorunPath(szAutorunPath, MAX_PATH, &dwWritten);
StringCchPrintf(szMessage, 1024,
L"It seems to be application being run from another"
L" place. There is already existing autorun entry: %s\n\n"
L"What would you like to do?\n"
L"Yes - Overwrite autorun entry with this executable\n"
L"No - Remove autorun entry\n"
L"Cancel - Do nothing", szAutorunPath);
iSelect = MessageBox(NULL, szMessage,
L"Executable path changed",
MB_YESNOCANCEL | MB_ICONWARNING);
switch (iSelect)
{
case IDYES:
AddAutorunEntry();
Button_SetCheck(GetDlgItem(hWnd, IDB_AUTORUN), BST_CHECKED);
break;
case IDNO:
RemoveAutorunEntry();
Button_SetCheck(GetDlgItem(hWnd, IDB_AUTORUN), BST_UNCHECKED);
break;
}
}
break;
case BST_CHECKED:
{
BOOL bResult;
bResult = RemoveAutorunEntry();
if (bResult)
{
Button_SetCheck((HWND) lParam, BST_UNCHECKED);
}
else {
MessageBox(NULL, L"Failed to create autorun entry.", NULL,
MB_OK | MB_ICONERROR);
}
}
break;
case BST_UNCHECKED:
{
BOOL bResult = AddAutorunEntry();
if (bResult)
{
Button_SetCheck((HWND) lParam, BST_CHECKED);
}
else {
MessageBox(NULL, L"Failed to remove autorun entry.", NULL,
MB_OK | MB_ICONERROR);
}
}
break;
}
}
break;
}
break;
case WM_NOTIFY:
switch (((LPNMHDR)lParam)->code)
{
case NM_CLICK:
case NM_RETURN:
{
PNMLINK pNMLink = (PNMLINK)lParam;
LITEM item = pNMLink->item;
ShellExecute(NULL, L"open",
item.szUrl,
NULL, NULL, SW_SHOW);
}
break;
}
break;
default:
return FALSE;
break;
}
return TRUE;
}
extern inline void OpenSettingsDialog()
{
HWND hDlg;
/* Mutex? */
hDlg = FindWindow(0, L"HideVolumeOSD-C Settings");
if (hDlg)
SetActiveWindow(hDlg);
else
DialogBox(GetModuleHandle(NULL), MAKEINTRESOURCE(IDD_SETTINGS),
hMsgWindow, (DLGPROC) SettingsDlgProc);
}
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case HVWM_TRAYICON:
{
if (LOWORD(lParam) == WM_CONTEXTMENU)
{
HMENU hMenu = LoadMenu(GetModuleHandle(NULL),
MAKEINTRESOURCE(IDR_TRAYPOPUP));
hMenu = GetSubMenu(hMenu, 0);
SetForegroundWindow(hWnd);
TrackPopupMenu(hMenu, TPM_TOPALIGN | TPM_LEFTALIGN,
GET_X_LPARAM(wParam), GET_Y_LPARAM(wParam), 0, hWnd, NULL);
}
}
return 0;
break;
case WM_COMMAND:
if (HIWORD(wParam) == 0)
{
if (LOWORD(wParam) == IDM_EXIT)
{
NOTIFYICONDATA nid = { 0 };
ZeroMemory(&nid, sizeof(nid));
nid.cbSize = sizeof(nid);
nid.hWnd = hMsgWindow;
nid.uID = 1;
Shell_NotifyIcon(NIM_DELETE, &nid);
PostQuitMessage(0);
}
else if (LOWORD(wParam) == IDM_SETTINGS)
{
OpenSettingsDialog();
}
else if (LOWORD(wParam) == IDM_SHOW)
{
ShowOSD();
g_status = STATUS_SHOWN;
ApplyIconTheme();
}
else if (LOWORD(wParam) == IDM_HIDE)
{
HideOSD();
g_status = STATUS_HIDDEN;
ApplyIconTheme();
}
}
return 0;
break;
}
return DefWindowProc(hWnd, message, wParam, lParam);
}
int APIENTRY wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPWSTR lpCmdLine, int nCmdShow)
{
UNREFERENCED_PARAMETER(hInstance)
UNREFERENCED_PARAMETER(hPrevInstance)
UNREFERENCED_PARAMETER(nCmdShow)
MSG msg;
BOOL bResult;
WNDCLASSEX wcex;
int nArgs;
LPWSTR *szArgList;
if (CheckInstance(szAppMutex))
{
MessageBox(NULL, L"Another instance of application is already running.",
szAppName, MB_OK);
return -1;
}
INITCOMMONCONTROLSEX iccex = { 0 };
iccex.dwSize = sizeof(iccex);
iccex.dwICC = ICC_LINK_CLASS;
InitCommonControlsEx(&iccex);
szArgList = CommandLineToArgvW(lpCmdLine, &nArgs);
if (nArgs > 0 && (wcscmp(szArgList[0], L"-show") == 0))
{
ShowOSD();
}
else {
HideOSD();
}
bResult = ReadSettingsFromRegistry(&g_settings);
assert(bResult);
if (!bResult)
{
MessageBox(NULL, L"Couldn't load settings", NULL, MB_OK | MB_ICONERROR);
PostQuitMessage(0);
}
ZeroMemory(&wcex, sizeof(wcex));
wcex.cbSize = sizeof(wcex);
wcex.lpfnWndProc = (WNDPROC) WndProc;
wcex.hInstance = hInstance;
wcex.lpszClassName = L"HideVol";
bResult = RegisterClassEx(&wcex);
assert(bResult);
if (!bResult)
{
MessageBox(NULL, L"Class registration failed", NULL, MB_OK | MB_ICONERROR);
PostQuitMessage(0);
}
hMsgWindow = CreateWindowEx(0, L"HideVol", L"HideVol Window",
0, 0, 0, 0, 0,