crt0twin.cpp

此为本书的配套光盘.本书不但由浅入深地讲解了软件保护技术

#include <windows.h>

typedef void (__cdecl *_PVFV)(void);

#pragma data_seg(".CRT$XCA")
_PVFV __xc_a[] = { NULL };


#pragma data_seg(".CRT$XCZ")
_PVFV __xc_z[] = { NULL };

#pragma data_seg()  /* reset */

#pragma comment(linker, "/merge:.CRT=.data")


void __cdecl _initterm (
						_PVFV * pfbegin,
						_PVFV * pfend
						)
{
/*
* walk the table of function pointers from the bottom up, until
* the end is encountered.  Do not skip the first entry.  The initial
* value of pfbegin points to the first valid entry.  Do not try to
* execute what pfend points to.  Only entries before pfend are valid.
	*/
    while ( pfbegin < pfend )
    {
        // if current table entry is non-NULL, call thru it.
        if ( *pfbegin != NULL )
            (**pfbegin)();
        ++pfbegin;
    }
}

extern "C" void __cdecl tinyWinMainCRTStartup( void )

{
    int mainret;
    char *lpszCommandLine;
    STARTUPINFO StartupInfo;

    lpszCommandLine = GetCommandLine();

    // Skip past program name (first token in command line).

    if ( *lpszCommandLine == '"' )  // Check for and handle quoted program name
    {
        // Scan, and skip over, subsequent characters until  another
        // double-quote or a null is encountered

        while( *lpszCommandLine && (*lpszCommandLine != '"') )
            lpszCommandLine++;

        // If we stopped on a double-quote (usual case), skip over it.

        if ( *lpszCommandLine == '"' )
            lpszCommandLine++;
    }
    else    // First token wasn't a quote
    {
        while ( *lpszCommandLine > ' ' )
            lpszCommandLine++;
    }

    // Skip past any white space preceeding the second token.

    while ( *lpszCommandLine && (*lpszCommandLine <= ' ') )
        lpszCommandLine++;

    StartupInfo.dwFlags = 0;
    GetStartupInfo( &StartupInfo );

    // Call C++ constructors
    _initterm( __xc_a, __xc_z );

    mainret = WinMain( GetModuleHandle(NULL),
                       NULL,
                       lpszCommandLine,
                       StartupInfo.dwFlags & STARTF_USESHOWWINDOW
                            ? StartupInfo.wShowWindow : SW_SHOWDEFAULT );   
	
	//除去ExitProcess函数的调用，以便壳运行之后仍可使程序继续执行
	//ExitProcess(0);
}