tnmisc.cpp File Reference

#include "precomp.h"

Include dependency graph for tnmisc.cpp:

Go to the source code of this file.

Functions
BOOL	CreateHiddenConsoleProcess (LPCTSTR szChildName, PROCESS_INFORMATION *ppi, LPHANDLE phInWrite, LPHANDLE phOutRead, LPHANDLE phErrRead)
BOOL	SpawnProcess (char *cmd_line, PROCESS_INFORMATION *pi)
int	GetWin32Version (void)
HWND	TelnetGetConsoleWindow ()
bool	SetIcon (HWND hConsoleWindow, HANDLE hIcon, LPARAM *pOldBIcon, LPARAM *pOldSIcon, const char *icondir)
void	ResetIcon (HWND hConsoleWindow, LPARAM oldBIcon, LPARAM oldSIcon)

Function Documentation

CreateHiddenConsoleProcess()

BOOL CreateHiddenConsoleProcess	(	LPCTSTR	szChildName,
		PROCESS_INFORMATION *	ppi,
		LPHANDLE	phInWrite,
		LPHANDLE	phOutRead,
		LPHANDLE	phErrRead
	)

Definition at line 5 of file tnmisc.cpp.

                                                    {
    BOOL fCreated;
    STARTUPINFO si;
    SECURITY_ATTRIBUTES sa;
    HANDLE hInRead = INVALID_HANDLE_VALUE;
    HANDLE hOutWrite = INVALID_HANDLE_VALUE;
    HANDLE hErrWrite = INVALID_HANDLE_VALUE;
 
    // Create pipes
    // initialize security attributes for handle inheritance (for WinNT)
    sa.nLength = sizeof( sa );
    sa.bInheritHandle = TRUE;
    sa.lpSecurityDescriptor  = NULL;
 
    // create STDIN pipe
    if( !CreatePipe( &hInRead, phInWrite, &sa, 0 )) {
        hInRead = INVALID_HANDLE_VALUE;
        goto error;
    }
 
    // create STDOUT pipe
    if( !CreatePipe( phOutRead, &hOutWrite, &sa, 0 )) {
        hOutWrite = INVALID_HANDLE_VALUE;
        goto error;
    }
 
    // create STDERR pipe
    if( !CreatePipe( phErrRead, &hErrWrite, &sa, 0 )) {
        hErrWrite = INVALID_HANDLE_VALUE;
        goto error;
    }
 
    // process startup information
    memset( &si, 0, sizeof( si ));
    si.cb = sizeof( si );
    si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
    // child process' console must be hidden for Win95 compatibility
    si.wShowWindow = SW_HIDE;
    // assign "other" sides of pipes
    si.hStdInput = hInRead;
    si.hStdOutput = hOutWrite;
    si.hStdError = hErrWrite;
 
    // Create a child process (suspended)
    fCreated = CreateProcess( NULL,
                              (LPTSTR)szChildName,
                              NULL,
                              NULL,
                              TRUE,
                              0,
                              NULL,
                              NULL,
                              &si,
                              ppi );
 
    if( !fCreated )
        goto error;
 
    CloseHandle( hInRead );
    CloseHandle( hOutWrite );
    CloseHandle( hErrWrite );
 
    return TRUE;
 
error:
    if (hInRead != INVALID_HANDLE_VALUE) CloseHandle( hInRead );
    if (hOutWrite != INVALID_HANDLE_VALUE) CloseHandle( hOutWrite );
    if (hErrWrite != INVALID_HANDLE_VALUE) CloseHandle( hErrWrite );
    CloseHandle( ppi->hProcess );
    CloseHandle( ppi->hThread );
 
    hInRead =
    hOutWrite =
    hErrWrite =
    ppi->hProcess =
    ppi->hThread = INVALID_HANDLE_VALUE;
 
    return FALSE;
}

Referenced by Telnet::Open().

GetWin32Version()

int GetWin32Version

(

void

)

Definition at line 98 of file tnmisc.cpp.

                          {
    // return win32 version; 0 = Win32s, 1 = Win95, 2 = WinNT, 3 = Unknown -crn@ozemail.com.au
    LPOSVERSIONINFO osv;
    DWORD retval;
 
    osv = new OSVERSIONINFO;
 
    osv->dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
    GetVersionEx (osv);
    retval = osv->dwPlatformId;
    delete osv;
    return (retval);
}

Referenced by telCommandLine().

ResetIcon()

void ResetIcon	(	HWND	hConsoleWindow,
		LPARAM	oldBIcon,
		LPARAM	oldSIcon
	)

Definition at line 179 of file tnmisc.cpp.

                                                                      {
#ifdef ICON_BIG
    SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG, (LPARAM)oldBIcon);
#endif
#ifdef ICON_SMALL
    SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL, (LPARAM)oldSIcon);
#endif
}

Referenced by Telnet::~Telnet().

SetIcon()

bool SetIcon	(	HWND	hConsoleWindow,
		HANDLE	hIcon,
		LPARAM *	pOldBIcon,
		LPARAM *	pOldSIcon,
		const char *	icondir
	)

Definition at line 136 of file tnmisc.cpp.

                                  {
    if(!hConsoleWindow) return false;
 
// FIX ME!!! The LoadIcon code should work with any compiler!
// (Paul Brannan 12/17/98)
#ifndef __BORLANDC__ // Ioannou Dec. 8, 1998
    if(!hIcon) {
        char filename[MAX_PATH];                    // load from telnet.ico
        _snprintf(filename, MAX_PATH - 1, "%s%s", icondir, "telnet.ico");
        filename[MAX_PATH - 1] = '\0';
 
        // Note: loading the icon from a file doesn't work on NT
        // There is no LoadImage in Borland headers - only LoadIcon
        hIcon = LoadImage(NULL, filename, IMAGE_ICON, 0, 0, LR_DEFAULTSIZE +
            LR_LOADFROMFILE);
    }
#else
    // load the icon from the resource file -crn@ozemail.com.au 16/12/98
    if(!hIcon) {
        hIcon = LoadIcon((HANDLE)GetWindowLongPtr(hConsoleWindow,
            GWLP_HINSTANCE), "TELNETICON");
    }
#endif
 
    if(hIcon) {
#ifdef ICON_BIG
        *pOldBIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_BIG,
            (LPARAM)hIcon);
#endif
#ifdef ICON_SMALL
        *pOldSIcon = SendMessage(hConsoleWindow, WM_SETICON, ICON_SMALL,
            (LPARAM)hIcon);
#endif
        return true;
    } else {
        // Otherwise we get a random icon at exit! (Paul Brannan 9/13/98)
        return false;
    }
}

Referenced by Telnet::DoInit().

SpawnProcess()

BOOL SpawnProcess	(	char *	cmd_line,
		PROCESS_INFORMATION *	pi
	)

Definition at line 87 of file tnmisc.cpp.

                                                           {
    STARTUPINFO si;
 
    memset(&si, 0, sizeof(si));
    si.cb = sizeof(si);
 
    return CreateProcess(cmd_line, NULL, NULL, FALSE, NORMAL_PRIORITY_CLASS,
                         CREATE_NEW_CONSOLE, NULL, NULL, &si, pi);
}

Referenced by Telnet::NewProcess().

TelnetGetConsoleWindow()

HWND TelnetGetConsoleWindow

(

void

)

Definition at line 115 of file tnmisc.cpp.

                              {
    DWORD pid = GetCurrentProcessId(), wpid;
    char title[512], *t = title;
    HWND hrv = NULL;
 
#ifndef __BORLANDC__    // Ioannou Dec. 8, 1998
    if(!GetConsoleTitle(title, sizeof(title))) t = NULL;
 
    for(;;) {
        if((hrv = FindWindowEx(NULL, hrv, "tty", t)) == NULL) break;
        if(!GetWindowThreadProcessId(hrv, &wpid)) continue;
        if(wpid == pid) return hrv;
    }
#endif
 
    return GetForegroundWindow();
}

Referenced by Telnet::DoInit().