blender/source/creator/blender_launcher_win32.c
Ray Molenkamp e8ca635e43 Cleanup: rename blender-launcher source file.
blender-laucher.c was not an ideal name for this file
since it's not directly clear it is windows only.

This change renames it to blender_launcher_win32.c
to be more in line with other win32 specific files
we have.
2021-05-27 08:10:31 -06:00

93 lines
3.2 KiB
C

/*
* 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.
*/
#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);
if (success) {
/* 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 success ? 0 : -1;
}