关于delphi调用vc生成dll的问题。我用vc生成的dll,delphi调用会报错,但是一直找不到问题所在,请大家进来帮我看看。
#define _TM_OS2
#include "stdafx.h"
#include "atmi.h" bool WINAPI DllMain( HMODULE hModule, DWORD dwReason, LPVOID lpvReserved )
{
return TRUE;
} LRESULT WINAPI TpStrCall1(char *ServiceName, char *Str)
{
MessageBox( 0, ServiceName, "信息!", 0 );
MessageBox( 0, Str, "信息!", 0 );
return(0);
} LRESULT WINAPI TpStrCall(char *ServiceName, char *SndStr, char *RevStr)
{
char *sendbuf, *rcvbuf;
long rcvlen;
int ret; if (strlen(SndStr) > 300)
{
MessageBox( 0, "字符串超出指定长度!", "错误!", 0 );
return(tperrno);
} if (tpinit((TPINIT *) NULL) == -1)
{
MessageBox( 0, "连接初始化错误!", "错误!", 0 );
return(tperrno);
} if((sendbuf = (char *) tpalloc("STRING", NULL, sizeof(SndStr))) == NULL)
{
MessageBox( 0, "分配发送字符串出错!", "错误!", 0 );
tpterm();
return(tperrno);
} if((rcvbuf = (char *) tpalloc("STRING", NULL, sizeof(SndStr)*2)) == NULL)
{
MessageBox( 0, "分配接收字符串出错!", "错误!", 0 );
tpfree(sendbuf);
tpterm();
return(tperrno);
} strcpy(sendbuf, SndStr); ret = tpcall(ServiceName, (char *)sendbuf, 0, (char **)&rcvbuf, &rcvlen, (long)0);
if(ret == -1)
{
MessageBox( 0, "tpcall失败!", "错误!", 0 );
tpfree(sendbuf);
tpfree(rcvbuf);
tpterm();
return(tperrno);
} strcpy(RevStr, rcvbuf);
tpfree(sendbuf);
tpfree(rcvbuf);
tpterm();
return(0);
} LRESULT WINAPI check_newno(char *newno, int flag)
{
int m, len;
int i, j, k, l; j = 0;
len = strlen(newno) - 1;
m = (len - 1) % 2;
for( i = len - 1; i >= 0; i-- )
{
if(newno[i] > '9' || newno[i] < '0')
return -1;
if( i%2 == m )
l = (newno[i] - '0') * 2;
else
l = newno[i] - '0';
j = j + l / 10 + l % 10;
} j = j % 10; if( j == 0 )
j = 10; k = 10 - j;
if(flag == TRUE)
{
if ( (char) newno[len] == (char) ('0' + k) )
return 0;
else
return -1;
}
else
{
newno[len] = '0' + k;
return 0;
} }
delphi调用程序如下:
function TpStrCall(ServName: pChar; SndStr: pChar; RevStr: pChar): integer;
stdcall; external 'TuxAPI.dll';
function check_newno(newno: PChar; flag: Integer): integer;
stdcall; external 'TuxAPI.dll';
function MacHash(inputstr: PChar; outputstr: PChar; flat: PChar): integer;
#define _TM_OS2
#include "stdafx.h"
#include "atmi.h" bool WINAPI DllMain( HMODULE hModule, DWORD dwReason, LPVOID lpvReserved )
{
return TRUE;
} LRESULT WINAPI TpStrCall1(char *ServiceName, char *Str)
{
MessageBox( 0, ServiceName, "信息!", 0 );
MessageBox( 0, Str, "信息!", 0 );
return(0);
} LRESULT WINAPI TpStrCall(char *ServiceName, char *SndStr, char *RevStr)
{
char *sendbuf, *rcvbuf;
long rcvlen;
int ret; if (strlen(SndStr) > 300)
{
MessageBox( 0, "字符串超出指定长度!", "错误!", 0 );
return(tperrno);
} if (tpinit((TPINIT *) NULL) == -1)
{
MessageBox( 0, "连接初始化错误!", "错误!", 0 );
return(tperrno);
} if((sendbuf = (char *) tpalloc("STRING", NULL, sizeof(SndStr))) == NULL)
{
MessageBox( 0, "分配发送字符串出错!", "错误!", 0 );
tpterm();
return(tperrno);
} if((rcvbuf = (char *) tpalloc("STRING", NULL, sizeof(SndStr)*2)) == NULL)
{
MessageBox( 0, "分配接收字符串出错!", "错误!", 0 );
tpfree(sendbuf);
tpterm();
return(tperrno);
} strcpy(sendbuf, SndStr); ret = tpcall(ServiceName, (char *)sendbuf, 0, (char **)&rcvbuf, &rcvlen, (long)0);
if(ret == -1)
{
MessageBox( 0, "tpcall失败!", "错误!", 0 );
tpfree(sendbuf);
tpfree(rcvbuf);
tpterm();
return(tperrno);
} strcpy(RevStr, rcvbuf);
tpfree(sendbuf);
tpfree(rcvbuf);
tpterm();
return(0);
} LRESULT WINAPI check_newno(char *newno, int flag)
{
int m, len;
int i, j, k, l; j = 0;
len = strlen(newno) - 1;
m = (len - 1) % 2;
for( i = len - 1; i >= 0; i-- )
{
if(newno[i] > '9' || newno[i] < '0')
return -1;
if( i%2 == m )
l = (newno[i] - '0') * 2;
else
l = newno[i] - '0';
j = j + l / 10 + l % 10;
} j = j % 10; if( j == 0 )
j = 10; k = 10 - j;
if(flag == TRUE)
{
if ( (char) newno[len] == (char) ('0' + k) )
return 0;
else
return -1;
}
else
{
newno[len] = '0' + k;
return 0;
} }
delphi调用程序如下:
function TpStrCall(ServName: pChar; SndStr: pChar; RevStr: pChar): integer;
stdcall; external 'TuxAPI.dll';
function check_newno(newno: PChar; flag: Integer): integer;
stdcall; external 'TuxAPI.dll';
function MacHash(inputstr: PChar; outputstr: PChar; flat: PChar): integer;
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误导,请你看看WINAPI的宏定义究竟是啥??LZ,俺建议你直接调试这个DLL,看看究竟是哪里出错。
LRESULT WINAPI check_newno(char *newno, int flag)
{
...
}
报的其它错:无法定位程序输入点 check_newno 于动态链接库 TuxAPI.dll上
void _declspec(dllexport) __stdcall function1()
void _declspec(dllexport) __stdcall function2()
void _declspec(dllexport) __stdcall function3()添加一个Def文件:
LIBRARY DefClass
EXPORTS
function1 @ 1
function2 @ 2
function3 @ 3