1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
/*
* 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;
}
|