Static link
Platform: Windows2000 / XP
Tools: VC 6.0
Create the steps:
1. New project: Win32 static library;
2 Select pre-compliled header;
3 Edit the header file and implement the file;
4 Compile, generate a lib file;
Reference Code:
//sum.h
#ifndef mysum
#define mysum
EXTERN "C"
{
Int sum (int N);
}
#ENDIF
//sum.cpp
#include "stdafx.h"
#include "sum.h"
Int sum (int N)
{
INT IRET = 0;
For (INT i = 1; i <= n; i )
{
IRET = I;
}
Return IRet;
}
Test steps:
1 Create a new Win32 Console project;
2 Add function call;
3 Add header files and lib files to the project;
4 compile, run;
Reference Code:
//main.cpp
#include "sum.h"
#include
int main ()
{
Printf ("% D", sum (n));
Return 0;
}
Win32 dynamic link
Create the steps:
1 New project: Win32 DLL;
2 Edit the header file and implement the file;
3 Compile, generate lib files and DLL files;
Reference Code:
//sum.h
#ifdef __cplusplus
EXTERN "C"
{
#ENDIF
#ifdef Sum_Exports
#define sum_api __declspec (dllexport)
#ELSE
#define sum_api __declspec (dllimport)
#ENDIF
SUM_API INT SUM (INT N);
#ifdef __cplusplus
}
#ENDIF
//sum.cpp
#define sum_exports
#include "sum.h"
Int sum (int N)
{
INT IRET = 0;
For (INT i = 1; i <= n; i )
{
IRET = I;
}
Return IRet;
}
Test steps:
1 Create a new Win32 Console project;
2 Add function call;
3 Add header files and lib files to the project;
4 put the DLL file in the same directory in the executable
5 compile, run;
Static load reference code:
//main.cpp
#include "sum.h"
#include "stdio.h"
Int main (void)
{
Printf ("% D", sum (100));
Return 0;
}
Dynamically loaded reference code:
//main.cpp
#include "sum.h"
#include "stdio.h"
#include
Typedef int (* pfunc) (int);
Int main (void)
{
Hinstance hlib = :: loadLibrary ("dll");
IF (HLIB! = NULL)
{
Pfunc Pfunc = (PFUNC) :: getProcaddress (HLIB, "SUM");
IF (PFUNC! = NULL)
{
Printf ("% D", PFUNC (100));
}
Else
PRINTF ("Function Not Found!");
}
Else
{
Printf ("Library Not Found!");
}
Return 0;
}
Guide the class and member functions from the DLL
Create the steps:
1 New project: Win32 DLL;
2 Edit the header file and implement the file;
3 Compile, generate lib files and DLL files;
//cfoo.h
#ifdef cdll_exports
#define cdll_api __declspec (dllexport)
#ELSE
#define cdll_api __declspec (dllimport)
#ENDIF
Class CDL1_API Cfoo {
PUBLIC:
Void Hello (Void);
}
//cfoo.cpp
#include "stdafx.h"
#include "cfoo.h"
#include
Void cfoo :: hello ()
{
Std :: cout << "Hello DLL!" << std :: endl;
}
Test steps:
1 Create a new Win32 Console project;
2 Add function call;
3 Add header files and lib files to the project;
4 put the DLL file in the same directory in the executable
5 compile, run;
//main.cpp
#include "cfoo.h"
Int main (void)
{
Cfoo F;
f.hello ();
Return 0;
}
Extend DLL using MFC
Suppose you want to export a dialog, you want to modify the code:
#ifndef _afxext
#define IDd_ext_name 129
#ELSE
#include "resource.h"
#ENDIF
Class AFX_EXT_CLASS CNAMEDLG: Public CDIALOG
{...}
