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library DCToJpg;
uses SysUtils, Classes, windows, Graphics, Jpeg;
function add(i:Pinteger;j:Pinteger):integer;stdcall;
begin
result:=i^+j^;
end;
exports
Add name 'Add';
begin
end.
VC调用部分：
typedef long (* _add)(long* a,long* b);
。。。
void CDllCallDlg::OnOK()
{
HINSTANCE hLibrary;
_add add;
hLibrary=LoadLibrary("DCToJpg.dll");
add=(_add)GetProcAddress(hLibrary,"Add");
long i;
long x(1),y(-2);
i= (*add)(&x,&y);
FreeLibrary(hLibrary);
CString s;
s.Format("%d",i);
::AfxMessageBox(s);
CDialog::OnOK();
}
