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size_t *Ep2ReadLen;
extern "C" int _stdcall TestDLL(size_t* iPort2ReadLen)
{
Ep2ReadLen = iPort2ReadLen;
*Ep2ReadLen = 5; //͉˕
if (Ep2ReadLen)
{
free(Ep2ReadLen);
//Ep2ReadLen=NULL;
}
return 0;
}
VB²¿·Ö
Declare Function TestDLL Lib "XXX.dll" (ByRef iPort2ReadLen As Integer) As Integer
Dim iPort2ReadLen As Integer
rt = TestDLL(iPort2ReadLen)
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Dim iPort2ReadLen As Integer
Private Sub Command1_Click()
iPort2ReadLen = 34
rt = TestDLL(iPort2ReadLen)
MsgBox iPort2ReadLen
End Sub
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Private Sub Command1_Click()
Dim iPort2ReadLen As Integer
 
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