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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include <Windows.h>
#include <strsafe.h>
#include <PathCch.h>
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PWSTR pCmdLine, int nCmdShow)
{
STARTUPINFO siStartInfo = {0};
PROCESS_INFORMATION procInfo;
wchar_t path[MAX_PATH];
siStartInfo.wShowWindow = SW_HIDE;
siStartInfo.dwFlags = STARTF_USESHOWWINDOW;
/* Get the path to the currently running executable (blender-launcher.exe) */
DWORD nSize = GetModuleFileName(NULL, path, MAX_PATH);
if (!nSize) {
return -1;
}
/* GetModuleFileName returns the number of characters written, but GetLastError needs to be
* called to see if it ran out of space or not. However where would we be without exceptions
* to the rule: "If the buffer is too small to hold the module name, the function returns nSize.
* The last error code remains ERROR_SUCCESS." - source: MSDN. */
if (GetLastError() == ERROR_SUCCESS && nSize == MAX_PATH) {
return -1;
}
/* Remove the filename (blender-launcher.exe) from path. */
if (PathCchRemoveFileSpec(path, MAX_PATH) != S_OK) {
return -1;
}
/* Add blender.exe to path, resulting in the full path to the blender executable. */
if (PathCchCombine(path, MAX_PATH, path, L"blender.exe") != S_OK) {
return -1;
}
int required_size_chars = lstrlenW(path) + /* Module name */
3 + /* 2 quotes + Space */
lstrlenW(pCmdLine) + /* Original command line */
1; /* Zero terminator */
size_t required_size_bytes = required_size_chars * sizeof(wchar_t);
wchar_t *buffer = (wchar_t *)malloc(required_size_bytes);
if (!buffer) {
return -1;
}
if (StringCbPrintfEx(buffer,
required_size_bytes,
NULL,
NULL,
STRSAFE_NULL_ON_FAILURE,
L"\"%s\" %s",
path,
pCmdLine) != S_OK) {
free(buffer);
return -1;
}
BOOL success = CreateProcess(
path, buffer, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &siStartInfo, &procInfo);
DWORD returnValue = success ? 0 : -1;
if (success) {
/* If blender-launcher is called with background command line flag,
* wait for the blender process to exit and return its return value. */
BOOL background = FALSE;
int argc = 0;
LPWSTR *argv = CommandLineToArgvW(pCmdLine, &argc);
for (int i = 0; i < argc; i++) {
if ((wcscmp(argv[i], L"-b") == 0) || (wcscmp(argv[i], L"--background") == 0)) {
background = TRUE;
break;
}
}
if (background) {
WaitForSingleObject(procInfo.hProcess, INFINITE);
GetExitCodeProcess(procInfo.hProcess, &returnValue);
}
/* Handles in PROCESS_INFORMATION must be closed with CloseHandle when they are no longer
* needed - MSDN. Closing the handles will NOT terminate the thread/process that we just
* started. */
CloseHandle(procInfo.hThread);
CloseHandle(procInfo.hProcess);
}
free(buffer);
return returnValue;
}
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