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92 lines
3.2 KiB
C
92 lines
3.2 KiB
C
/*
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* Windows cmd: a command line wrapper for GUI applications
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*
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* Copyright (C) 2012 Red Hat, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Usage:
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* If your app is a GUI app compiled with -Wl,--subsystem,windows But
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* you still want to run it from the command line to support console
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* interaction (input, output), you can compile and install this small
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* wrapper as a .com file next to your .exe. (.com takes precedence)
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*
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* This wrapper will call the .exe with the same arguments, and wait
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* until it finished. The child process should attach to the same
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* console and redirect standard input/output, this way:
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*
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* if (AttachConsole(ATTACH_PARENT_PROCESS) != 0) {
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* freopen("CONIN$", "r", stdin);
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* freopen("CONOUT$", "w", stdout);
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* freopen("CONOUT$", "w", stderr);
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* dup2(fileno(stdin), STDIN_FILENO);
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* dup2(fileno(stdout), STDOUT_FILENO);
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* dup2(fileno(stderr), STDERR_FILENO);
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* }
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* Note: if you have a better solution for hybrid console/windows app,
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* I would be glad to learn how!
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*
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* Author: Marc-André Lureau <marcandre.lureau@redhat.com>
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*/
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#include <windows.h>
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#include <psapi.h>
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#include <stdio.h>
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#include <assert.h>
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#include <string.h>
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int main(int argc, char *argv[])
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{
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STARTUPINFO si = { 0, };
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PROCESS_INFORMATION pi = { 0, };
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TCHAR name[MAX_PATH];
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DWORD len = GetModuleFileName(NULL, name, MAX_PATH);
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if (len < 5) {
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printf("Invalid process name\n");
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exit(1);
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} else {
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// We expect our helper to end with .com
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assert(strncmp(name + len - 3, "com", 4) == 0);
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// replace .com with .exe
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strncpy(name + len - 3, "exe", 3);
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}
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si.cb = sizeof(si);
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if (!CreateProcess(name,
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GetCommandLine(),
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NULL, // Process handle not inheritable
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NULL, // Thread handle not inheritable
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FALSE, // Set handle inheritance to FALSE
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0, // No creation flags
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NULL, // Use parent's environment block
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NULL, // Use parent's starting directory
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&si,
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&pi)) {
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printf("CreateProcess failed (%ld).\n", GetLastError());
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exit(1);
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}
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// Wait until child process exits.
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WaitForSingleObject(pi.hProcess, INFINITE);
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// Close process and thread handles.
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CloseHandle(pi.hProcess);
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CloseHandle(pi.hThread);
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return 0;
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}
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