rainmeter-studio/Application/Application.cpp

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/*
Copyright (C) 2001 Kimmo Pekkola
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; either version 2
of the License, or (at your option) any later version.
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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
#define _CRTDBG_MAP_ALLOC
#define WIN32_LEAN_AND_MEAN
#include <crtdbg.h>
#include <Windows.h>
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#include <ShellAPI.h>
#include <Shlwapi.h>
EXTERN_C IMAGE_DOS_HEADER __ImageBase;
typedef int (*RainmeterMainFunc)(LPWSTR cmdLine);
WCHAR* GetCommandLineArguments()
{
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WCHAR* args = GetCommandLine();
// Skip past (quoted) application path in cmdLine.
if (*args == L'"')
{
++args; // Skip leading quote.
while (*args && *args != L'"')
{
++args;
}
++args; // Skip trailing quote.
}
else
{
while (*args && *args != L' ')
{
++args;
}
}
// Skip leading whitespace (similar to CRT implementation).
while (*args && *args <= L' ')
{
++args;
}
return args;
}
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/*
** Attempts to load Rainmeter.dll. If it fails, retries after loading our own copies of the CRT
** DLLs in the Runtime directory.
*/
HINSTANCE LoadRainmeterLibrary()
{
HINSTANCE rmDll = LoadLibrary(L"Rainmeter.dll");
if (!rmDll)
{
WCHAR path[MAX_PATH];
if (GetModuleFileName(nullptr, path, MAX_PATH) > 0)
{
PathRemoveFileSpec(path);
PathAppend(path, L"Runtime");
SetDllDirectory(path);
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PathAppend(path, L"msvcp120.dll");
// Loading msvcpNNN.dll will load msvcrNNN.dll as well.
HINSTANCE msvcrDll = LoadLibrary(path);
SetDllDirectory(L"");
if (msvcrDll)
{
rmDll = LoadLibrary(L"Rainmeter.dll");
FreeLibrary(msvcrDll);
}
}
}
return rmDll;
}
/*
** Entry point. In Release builds, the entry point is Main() since the CRT is not used.
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**
*/
int APIENTRY wWinMain(HINSTANCE, HINSTANCE, LPWSTR, int)
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{
_CrtSetDbgFlag(_CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF);
//_CrtSetBreakAlloc(000);
// Prevent system error message boxes.
UINT oldMode = SetErrorMode(0);
SetErrorMode(oldMode | SEM_FAILCRITICALERRORS);
HINSTANCE instance = (HINSTANCE)&__ImageBase;
WCHAR* args = GetCommandLineArguments();
HRSRC iconResource = FindResource(instance, MAKEINTRESOURCE(1), RT_ICON);
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if (iconResource)
{
HINSTANCE rmDll = LoadRainmeterLibrary();
if (rmDll)
{
auto rainmeterMain = (RainmeterMainFunc)GetProcAddress(rmDll, MAKEINTRESOURCEA(1));
if (rainmeterMain)
{
return rainmeterMain(args);
}
}
WCHAR message[128];
wsprintf(
message,
L"Rainmeter.dll load error %ld.",
GetLastError());
MessageBox(nullptr, message, L"Rainmeter", MB_OK | MB_ICONERROR);
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}
else
{
// Stub prodecure. If icon resources have been removed, try to launch the actual Rainmeter.exe.
HKEY hKey;
const REGSAM desiredSam = KEY_QUERY_VALUE | KEY_WOW64_32KEY;
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, L"Software\\Rainmeter", 0, desiredSam, &hKey) == ERROR_SUCCESS)
{
const DWORD size = MAX_PATH;
WCHAR buffer[size];
DWORD type = 0;
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if (RegQueryValueEx(hKey, nullptr , nullptr, &type, (LPBYTE)buffer, (LPDWORD)&size) == ERROR_SUCCESS &&
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type == REG_SZ)
{
SetCurrentDirectory(buffer);
lstrcat(buffer, L"\\Rainmeter.exe");
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ShellExecute(nullptr, L"open", buffer, args, nullptr, SW_SHOWNORMAL);
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}
RegCloseKey(hKey);
}
return 0;
}
return 1;
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}
#ifndef _DEBUG
EXTERN_C int WINAPI Main()
{
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int result = wWinMain(nullptr, nullptr, nullptr, 0);
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ExitProcess(result);
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return 0; // Never reached.
}
#endif