🚀 go-pugleaf

DeKayA@bellsouth.net wrote:


> #include <windows.h>

#include <stdio.h> 	// for sprintf

>  HANDLE hIP;WSADATA wsa;HANDLE hIcmp;DWORD *dwIPAddr;struct hostent 
>     *phostent;

Replace the HANDLE hIcmp;
par :
HINSTANCE hIcmp;
LoadLibrary() returns a HINSTANCE not a HANDLE.


>  HANDLE ( WINAPI *pIcmpCreateFile )( VOID );
>  BOOL ( WINAPI *pIcmpCloseHandle )( HANDLE );
>  DWORD (WINAPI *pIcmpSendEcho)(HANDLE,DWORD,LPVOID,WORD,LPVOID,
>                                                  LPVOID,DWORD,DWORD);

Use typedefs when you have to deal with function pointers. It helps a lot:

typedef HANDLE ( WINAPI *ICMPCREATEFILE )( VOID );
typedef BOOL ( WINAPI *ICMPCLOSEHANDLE )( HANDLE );
typedef DWORD (WINAPI *ICMPSENDECHO)(HANDLE,DWORD,LPVOID,WORD,LPVOID,
                                        LPVOID,DWORD,DWORD);


> ->    pIcmpCreateFile=GetProcAddress( hIcmp,"IcmpCreateFile");
> ->    pIcmpCloseHandle=GetProcAddress( hIcmp,"IcmpCloseHandle");
> ->    pIcmpSendEcho =GetProcAddress( hIcmp,"IcmpSendEcho" );

You just need to cast the return value of GetProcAddress() to the 
correct function pointer. It's here your typedefs help you :

ICMPCREATEFILE pIcmpCreateFile=(ICMPCREATEFILE)GetProcAddress( 
hIcmp,"IcmpCreateFile");
        ICMPCLOSEHANDLE 
pIcmpCloseHandle=(ICMPCLOSEHANDLE)GetProcAddress( hIcmp,"IcmpCloseHandle");
        ICMPSENDECHO pIcmpSendEcho =(ICMPSENDECHO)GetProcAddress( 
hIcmp,"IcmpSendEcho" );


HTH
Michel
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Michel Leunen
mailto: see my homepage.
C++Builder, BCC5.5.1 Web site:
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