Corrected source code for windows app posted earlier to run a command
from java without
opening a DOS window.
Example: To run command "doit argument", you would instead use:
nodos doit argument
--
Erb
==============================================================
"The only time I like in the morning is afternoon."
- Russell D. Cooper
"If you do everything, then you're all done."
- Melissa F. Cooper
"Most of you are familiar with the virtues of a programmer.
There are three, of course: laziness, impatience, and hubris."
- Larry Wall
==============================================================
#include <windows.h>
#include <process.h>
static void getCmdName(LPSTR cmdLine, PCHAR cmdName) {
PCHAR src = cmdLine;
PCHAR dest = cmdName;
BOOL count_space = TRUE;
// Check for, and strip, quotes.
while (TRUE)
{
if (*src == NULL) {
break;
}
else if (*src == '"') {
count_space = !count_space;
src++;
}
else if (count_space && *src == ' ') {
break;
}
else {
*dest++ = *src++;
}
} // while
*dest = 0;
}
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow) {
PROCESS_INFORMATION pi;
STARTUPINFO si;
memset( &si, 0, sizeof( si ) );
si.cb = sizeof(si);
si.dwFillAttribute = 0;
si.dwFlags = STARTF_USESTDHANDLES;
si.wShowWindow = SW_HIDE;
si.hStdInput = ::GetStdHandle( STD_INPUT_HANDLE );
si.hStdOutput = ::GetStdHandle( STD_OUTPUT_HANDLE );
si.hStdError = ::GetStdHandle( STD_ERROR_HANDLE );
// Get first arg, the command name:
CHAR cmdName[MAX_PATH+1];
getCmdName(lpCmdLine, cmdName);
if (*cmdName == NULL) // nothing!
return -1;
// Search for separator.
PCHAR start = cmdName;
while (*start != NULL && *start != '\\')
start++;
// If found one, this is a path.
// Otherwise, search.
TCHAR fullName[MAX_PATH+1];
if (*start != NULL) {
// Check existence.
if (GetFileAttributes(cmdName) < 0)
return -1;
lstrcpy(fullName, cmdName);
}
else {
DWORD len = SearchPath(NULL, cmdName, ".exe", MAX_PATH+1, fullName,
NULL);
if (len == 0)
len = SearchPath(NULL, cmdName, ".bat", MAX_PATH+1, fullName,
NULL);
if (len == 0)
len = SearchPath(NULL, cmdName, ".cmd", MAX_PATH+1, fullName,
NULL);
if (len == 0)
return -1;
}
// Hide window for Win32 CUI only.
DWORD type;
BOOL ret = GetBinaryType(fullName, &type);
if (ret) {
if (type == SCS_32BIT_BINARY) {
HANDLE file = CreateFile(
fullName, GENERIC_READ,
FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
if (file) {
SetFilePointer(file, 60, NULL, FILE_BEGIN);
LONG offset;
DWORD dummy;
ReadFile(file, &offset, 4, &dummy, NULL);
SetFilePointer(file, offset, NULL, FILE_BEGIN);
IMAGE_NT_HEADERS32 headers;
ReadFile(file, &headers, sizeof(headers), &dummy,
NULL);
if ( headers.OptionalHeader.Subsystem ==
IMAGE_SUBSYSTEM_WINDOWS_CUI)
si.dwFlags |= STARTF_USESHOWWINDOW;
CloseHandle(file);
}
}
}
BOOL ok = CreateProcess( NULL, lpCmdLine, NULL, NULL,
TRUE, 0, NULL, NULL, &si, &pi );
if( !ok ) return -1;
DWORD result = WaitForSingleObject
(pi.hProcess,INFINITE);
switch( result ) {
case WAIT_FAILED:
case WAIT_ABANDONED:
case WAIT_TIMEOUT:
return -1;
default:
GetExitCodeProcess( pi.hProcess, &result );
return result;
}
}
