c语言怎么屏蔽一段程序,怎样可以屏蔽控制台程序的关闭按钮

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//以前发过，再贴一次

//-----------------------------------------------------

#include "windows.h"

#pragma comment(lib,"user32.lib")

LPCRITICAL_SECTION lpDllLock=NULL;

#define CODE_MOV_LEN 5

void FindKernelMemDllLock(DWORD CodeAddr)

{

int      iIndex;

PUCHAR code=(PUCHAR)CodeAddr;

for(iIndex=0;iIndex<1024;++iIndex)

{

if(IsBadReadPtr(code+iIndex,CODE_MOV_LEN))

break;

if(code[iIndex]==0x90 && code[iIndex+1]==0x90)

{

for(;iIndex<1024 && code[iIndex]==0x90;++iIndex);

if(!IsBadReadPtr(code+iIndex,CODE_MOV_LEN) && code[iIndex]==0x68)

{

lpDllLock=(LPCRITICAL_SECTION)(*((ULONG *)(code+iIndex+1)));

break;

}

}

}

}

BOOL __stdcall ConsoleEventCallback(DWORD dwEvent)

{

if(dwEvent==CTRL_CLOSE_EVENT)

{

if(lpDllLock==NULL)

{

DWORD *RetAddr=0;

#ifdef _MSC_VER

__asm mov RetAddr,ebp

#else

__asm__ __volatile__("movl %%ebp,%0":"=m"(RetAddr));

#endif

FindKernelMemDllLock(*(RetAddr+1));

}

if(lpDllLock)

{

LeaveCriticalSection(lpDllLock);

ExitThread(0);

}

return TRUE;

}

return FALSE;

}

int main()

{

MSG msg;

SetConsoleCtrlHandler(ConsoleEventCallback,TRUE);

while(GetMessage(&msg,NULL,0,0))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

return 0;

}