//===============================================================// vos. - the OS interface object//// Copyright (C) 1995,1996  Bruce E. Wampler//// This file is part of the V C++ GUI Framework, and is covered// under the terms of the GNU Library General Public License,// Version 2. This library has NO WARRANTY. See the source file// vapp.cxx for more complete information about license terms.//===============================================================#ifndef VOS_H#define VOS_H#include <v/v_defs.h>    class V_EXPORT vOS      {      public:      	vOS();        ~vOS();	int vChDrive(int drive);	int vGetEnvVal(char* name, char* val, int maxlen=255);	int vGetUserName( char* s, int len);	void vGetHostName(char* s, int len);	long vGetPid();	int vGetCWD(char* buf, int len);	int vChDir(const char* path);	int vDeleteFile(const char* filename);	int vRenameFile(const char* oldFilename, const char* newFilename);	void vSleep(long MSec);	int vRunProcess(const char* cmd, const char* StdOut = 0,	const char* StdErr = 0, const int Wait = 0, const int minimize = 0);     };#endif