Windows Form Bai 8

7/29/2019 Windows Form Bai 8

1/43

i Hc S Phm Tp. H Ch MinhKhoa Ton Tin Hc LP TRNH WINDOWSLP TRNH WINDOWS

Thvin lin k t ngThvin lin k t ngDLLDLL DYNAMIC LINK LIBRARYDYNAMIC LINK LIBRARY

Gii thiu thvin lin kt Cc loi thvin lin kt

Trn Ngc Bo - Email: [email protected]


2/43





3/43


4/43

GII THIU LIN KT L G ?

NDOW

NDOW

--DLLDLL

CT KCT K CT NhnCT Nhn CT TinCT Tin

N

HWI

N

HWI

NG

NG

o no n ss

LPT

LPT

KT

KT

SourceSource SourceSource SourceSource

CPH

CPH

LINL

IN codecode codecode

NGH

NGH

V

IN

V

IN

KT.EXEKT.EXE NS.EXENS.EXE TL.EXETL.EXE

BIG

BIG

THTH

TRN NGC BOTRN NGC BO KHOA TONKHOA TON --TIN HCTIN HC I HC S PHM TP.HCMI HC S PHM TP.HCM ((44))TRN NGC BOTRN NGC BO KHOA TONKHOA TON --TIN HCTIN HC I HC S PHM TP.HCMI HC S PHM TP.HCM ((44))CSDLCSDL


5/43


NDOW

NDOW

--DLLDLL

ModuleModule ModuleModule

N

HWI

N

HWI

NG

NG

LPT

LPT

KT

KT

CPH

CPH

LINL

INKT.DLLKT.DLL DataAccess.DLLDataAccess.DLL TL.DLLTL.DLL

NGH

NGH

V

IN

V

IN

BIG

BIG

THTH

TRN NGC BOTRN NGC BO KHOA TONKHOA TON --TIN HCTIN HC I HC S PHM TP.HCMI HC S PHM TP.HCM ((55))TRN NGC BOTRN NGC BO KHOA TONKHOA TON --TIN HCTIN HC I HC S PHM TP.HCMI HC S PHM TP.HCM ((55))


6/43


NDOW

NDOW

--DLLDLL Th vin l mt tp tin cha nhng hm hoc ti

nguyn khc c sn m cc ng dng c th ly s

N

HWI

N

HWI

NG

NG ng. c nguy n n y ng c o p p n u ng

dng cng chia s s dng d dng mt on m hoc ti

LPT

LPT

KT

KT

Lin kt l cch thc m trnh bin dch nhng/kt hp

CPH

CPH

LINL

IN cc on m thc thi c a nhng module th vin (Lib) vochng trnh

NGH

NGH

VIN

VIN

C 2 cch lin kt:

BIG

BIG

THTH

Lin kt ng



7/43





8/43

GII THIU CC LOI THVIN

NDOW

NDOW

--DLLDLL Th vin lin kt tnh (Static Linking Library)

N

HWI

N

HWI

NG

NG - Dng file: .LIB

LPT

LPT

KT

KT

- a m n n p n c a c c m t v n

- Dng nhng vo file chng trnh khi thc hin giai on

CPH

CPH

LINL

IN lin kt (linking) ca qu trnh bin dch

-

NGH

NGH

VIN

VIN

vo trong nhng module gi chng

BIG

BIG

THTH



9/43


10/43

THVIN LIN KT TNH

NDOW

NDOW

--DLLDLL u im

N

HWI

N

HWI

NG

NG

-

- Chng trnh c th chy c lp, khng cn cc file km theo

LPT

LPT

KT

KT

- Chng trnh chy nhanh hn v khng cn thc hin load th vin

Khu t im

CPH

CPH

LINL

IN - on m lnh c nhng vo chng trnh kch thc chng trnh

NGH

NGH

VIN

VIN

- on m lnh c nhng vo nhiu file chng trnh khc nhau

khn ti u

BIG

BIG

THTH - Khi thay i hm th vinphi bin dch li ton b cc file chng

trnh



11/43

THVIN LIN KT NG

NDOW

NDOW

--DLLDLL Th vin lin kt ng (Dynamic Linking Library)

N

HWI

N

HWI

NG

NG - Dng file: .LIB v DLL

-

LPT

LPT

KT

KT

.

Th vin nhp (Import Library)

Khng cha m lnh ca cc hm

CPH

CPH

LINL

IN

Chcha cc thng tin c n thi t hi u hnh np th vin DLL v xc nhcc hm export trong DLL

S dng khi dng cch thc load time dynamic linking

NGH

NGH

VIN

VIN

- File .DLL

Cha m lnh nh phn ca cc hm th vin

BIG

BIG

THTH

c ti vo b nh khi ng dng gi hm th vin

Cn phi chp tp tin i km khi thc thi ng dng



12/43

THVIN LIN KT NG

NDOW

NDOW

--DLLDLL Th vin lin kt Chng trnh chnh

N

HWI

N

HWI

NG

NG

Source codeSource code

(Source file)(Source file)Source codeSource code

LPT

LPT

KT

KT

Source codeSource code

CPH

CPH

LINL

IN CompilerCompiler CompilerCompiler(Header files)(Header files)

NGH

NGH

VIN

VIN

DLLDLL OBJ filesOBJ files

LinkerLinker

BIG

BIG

THTH

AB.EXEAB.EXE



13/43

THVIN LIN KT NG

NDOW

NDOW

--DLLDLL u im

- M lnh ca cc hm s khn c nhn vo tron file chn trnh ca n

N

HWI

N

HWI

NG

NG dng Kch thc ca ng dng nh

- ng dng chcn lu thng tin ca hm th vin, khi cn hiu hnh s load cc

LPT

LPT

KT

KT

- Nhiu ng dng c th dng chung 1 DLL. Do , tit kim b nh (thng thngmi ng dng c data ring, nhng c th chia s m lnh)

CPH

CPH

LINL

IN- Khi khng cn s dng, c th gii phng DLL khi b nh- Khi cn nng cp, chcn thay th file DLL, cc file chng trnh khc khng b

NGH

NGH

VIN

VIN

Khuyt im

BIG

BIG

THTH

- Kh s dng hn



14/43





15/43

XY DNG DLL

NDOW

NDOW

--DLLDLL

Xy dng th vin DLL bng th vin Win32API

N

HWI

N

HWI

NG

NG

LPT

LPT

KT

KT

CPH

CPH

LINL

IN

NGH

NGH

VIN

VIN

BIG

BIG

THTH

Chn loi Project:

Win32 Dynamic Link Library



16/43

XY DNG DLL

NDOW

NDOW

--DLLDLL

Xy dng th vin DLL bng th vin MFC

N

HWI

N

HWI

NG

NG

LPT

LPT

KT

KT

CPH

CPH

LINL

IN

NGH

NGH

VIN

VIN

BIG

BIG

THTH

Chn loi Project:



17/43

XY DNG DLL DNG THVIN WIN32 API

NDOW

NDOW

--DLLDLL

T o l DLL

N

HWI

N

HWI

NG

NG

LPT

LPT

KT

KT Ph n t ch c c khai b o

CPH

CPH

LINL

IN Phn tch hm DllMain

NGH

NGH

VIN

VIN

BIG

BIG

THTH



18/43


NDOW

NDOW

--DLLDLL Chn menu File New

N

HWI

N

HWI

NG

NG Chn Tab Projects

LPT

LPT

KT

KT

t tn project trong Project name

CPH

CPH

LINL

IN Xc nh ng dn thmc trongLocation

NGH

NGH

VIN

VIN ep : n o ng ng a expor s some

symbols

BIG

BIG

THTH Nh nFinish k t th c



19/43


NDOW

NDOW

--DLLDLL dllexport: cung cp hm, d liu, ti nguyn,cho cc chng trnh/DLL

khc s dng

N

HWI

N

HWI

NG

NG #define DLLEXPORT __declspec(dllexport)

LPT

LPT

KT

KT

DLLEXPORT int nMyValue;

//Khai bo 1 hm xut khu

CPH

CPH

LINL

IN dllimport: load 1 hm, d liu, ti nguyn,t 1 DLL khc s dng

NGH

NGH

VIN

VIN

#define DLLIMPORT __declspec(dllimport)

BIG

BIG

THTH

DLLIMPORT int nMyValue;

//Khai bo 1 hm nhp khu



20/43


NDOW

NDOW

--DLLDLL

Phn tch hm DllMain

N

HWI

N

HWI

NG

NG BOOL APIENTRY DllMain( HANDLE hModule,

DWORD ul_reason_for_call,

LPVOID l Reserved

LPT

LPT

KT

KT

)

{

CPH

CPH

LINL

IN

_ _ _

{case DLL_PROCESS_ATTACH:

NGH

NGH

VIN

VIN _ _

case DLL_THREAD_DETACH:

case DLL_PROCESS_DETACH:

BIG

BIG

THTH }

return TRUE;



21/43


NDOW

NDOW

--DLLDLL Phn tch hm DllMain (tt)

N

HWI

N

HWI

NG

NG Hm DllMain l hm chnh ca DLL

Hm DllMain c gi khi DLL c load vo b nh hoc khi Windows

LPT

LPT

KT

KT

y u c u c un oa n

Hm DllMain c nhim v khi to hoc gii phng cc ti nguyn s

CPH

CPH

LINL

IN

Cc tham s:

NGH

NGH

VIN

VIN ,

ul_reason_for_call: l do hm DllMain c gi

BIG

BIG

THTH



22/43


NDOW

NDOW


DLL_PROCESS_ATTACH:

N

HWI

N

HWI

NG

NG

Hm DllMain vi tham s DLL_PROCESS_ATTACH c gi khi process tin

hnh load DLL

LPT

LPT

KT

KT

Th vin DLL ang c Windows nh x vo vng nh ca tin trnh (thchin li gi DLL)

CPH

CPH

LINL

IN

,

thao tc cn thit khc trc khi cho php tin trnh gi n cc hm ca thvin

NGH

NGH

VIN

VIN DLL_PROCESS_DETACH:

Th vin DLL c gii phng khi vng nh ca tin trnh do 1 trong 3

BIG

BIG

THTH

, ,

hm FreeLibrary

y l thi im gii phng cc bin hay ti nguyn m DLL cp pht



23/43


NDOW

NDOW


N

HWI

N

HWI

NG

NG

_ _

Khi tin trnh to mi mt tiu trnh (Thread), Windows gi hm DllMain ca tt

c cc th vin DLL ang c s dng vi tin trnh .

LPT

LPT

KT

KT y l thi im khi to cc bin dng cho tiu trnh

Lu rng tnh hung ny chxy ra khi tiu trnh c to sau khi th vin

CPH

CPH

LIN

LIN

oa v o n r n , ng a n u c oa ng n oa rary

tt c cc tiu trnh hin c (trong tin trnh) s khng gi hm DllMain vi thams ny.

NGH

NGH

VIN

VIN

DLL_THREAD_DETACH:

Khi 1 tiu trnh kt thc, Windows gi hm DllMain ca tt c cc th vin DLL

BIG

BIG

THTH

ang c s dng vi ti u trnh ny.

y l thi im gii phng cc bin dng cho tiu trnh



24/43

LIN KT DLL VI NG DNG WIN32 API

NDOW

NDOW

--DLLDLL To Project loiWin32 Dynamic Link Library, vi tn

M Win32DLL

NHWI

NHWI

NG

NG

To Project loiWin32 Applicationvi tn l

M Win32Sam le

LPT

LPT

KT

KT

Bin dch v chy chng trnh

CPH

CPH

LIN

LIN

Copy tp tin MyWin32DLL.DLL vo thmc Debug caMyWin32Sample

NGH

NGH

VIN

VIN Copy tp tin MyWin32DLL.LIB v tp tin MyWin32DLL.H

vo thmc MyWin32Sample

BIG

BIG

THTH Add tp tin MyWin32DLL.LIB vo project

M Win32Sam le



25/43

XY DNG DLL DNG THVIN MFC

NDOW

NDOW

--DLLDLL

T o l DLL

NHWI

NHWI

NG

NG

LPT

LPT

KT

KT

CPH

CPH

LIN

LIN

n ng a m export

NGH

NGH

VIN

VIN

Cc dng thvin DLL ca MFC

BIG

BIG

THTH

Lin kt DLL vi ng dng



26/43

XY DNG DLL DNG THVIN MFC

NDOW

NDOW

--DLLDLL Chn menu File New

NHWI

NHWI

NG

NG Chn Tab Projects

LPT

LPT

KT

KT

t tn project trong Project name

CPH

CPH

LIN

LIN

Xc nh ng dn thmc trongLocation

NGH

NGH

VIN

VIN ep : n o ng ng egu ar us ng

shared MFC DLLhocMFC Extension DLL

BIG

BIG

THTH Nh nFinish k t th c



27/43

CC DNG THVIN DLL CA MFC

NDOW

NDOW

--DLLDLL

NHWI

NHWI

NG

NG

LPT

LPT

KT

KT

CPH

CPH

LIN

LIN

NGH

NGH

VIN

VIN

BIG

BIG

THTH



28/43

CC DNG THVIN DLL CA MFC

NDOW

NDOW

--DLLDLL Regular DLL:

Chexport cc hm theo dng C-style, khng th export class, hm thnh

NHWI

NHWI

NG

NG

p n c a c ass, c c m n ng a c ng over oa e unc on

Cc ng dng Win32 v MFC u c th s dng loi DLL

LPT

LPT

KT

KT

theo cch lin kt tnh

using shared MFC DLL: DLL sc lin kt vi cc DLL chun ca MFC

CPH

CPH

LIN

LIN

eo c c n ng

NGH

NGH

VIN

VIN

Cho php export cc class. ng dng khc c th to cc project t cc

class, hoc xy dng cc li k tha t class ny.

BIG

BIG

THTH DLL sc lin kt vi cc DLL chun ca MFC theo cch lin kt ng

Chc cc ng dng MFC mi c th dng vi loi DLL ny.



29/43

CCH THC GI DLL TRONG NG DNG

NDOW

NDOW

--DLLDLL

NHWI

NHWI

NG

NG

LPT

LPT

KT

KT

-

CPH

CPH

LIN

LIN

Run-time Dynamic Linking

NGH

NGH

VIN

VIN

BIG

BIG

THTH



30/43

NG DNG TM KIM FILE DLL

NDOW

NDOW

--DLLDLL

Hiu hnh Windows s tm file DLL c s dng

NHWI

NHWI

NG

NG

- Th m c cha t tin EXE i DLL n

LPT

LPT

KT

KT - Th mc hin hnh

CPH

CPH

LIN

LIN - Th mc system, system32

- Th mc Windows

NGH

NGH

VIN

VIN

- Cc th mc c lit k trong bin mi trng PATH

BIG

BIG

THTH



31/43

CCH THC GI DLL TRONG NG DNG Load-time

NDOW

NDOW

--DLLDLL ng dng s gi hm export ca DLL mt cch tng minh

(ging nh cch gi hm ca th vin lin kt tnh)

NHWI

NHWI

NG

NG

ng dng cn phi lin kt vi file th vin nhp (Import Lib)

ca DLL

LPT

LPT

KT

KT

ng dng s np DLL ngay thi im u tin chng trnh ch

CPH

CPH

LIN

LIN

u im:

NGH

NGH

VIN

VIN - n gin, d s dng v ging nh cch dng th vin tnh

Khuyt im:

BIG

BIG

THTH

- Nu khng tm ra DLL lc np, ng dng s kt thc ngay



32/43

CCH THC GI DLL TRONG NG DNG Load-time

NDOW

NDOW

--DLLDLL Cch thc hin

NHWI

NHWI

NG

NG

-Add file th vin nhp (DLLName.Lib) vo project

LPT

LPT

KT

KT

- Khai bo cc hm, bin IMPORT t DLL

CPH

CPH

LIN

LIN

- Gi hm ca th vin DLL nh gi hm bnh thng

NGH

NGH

VIN

VIN

BIG

BIG

THTH



33/43

CCH THC GI DLL TRONG NG DNG Run-time

NDOW

NDOW

--DLLDLL ng dng s gi hm LoadLibraryhay LoadLibraryEx npDLL ti thi im cn thit

NHWI

NHWI

NG

NG Sau khi DLL c np, ng dng s dng hm

GetProcessAddress ly a ch ca hm export trong DLL

LPT

LPT

KT

KT ng dng s gi hm export trong DLL bng cch dng con

tr hm tr v t hm GetProcessAddress

CPH

CPH

LIN

LIN

-

u im:

NGH

NGH

VIN

VIN

.

- C th x l li khng tm thy DLL, trnh kt thc ng dng tc thi, th hin

thng bo li do ng dng qui nh

BIG

BIG

THTH Khuyt im:

- Phc tp, kh s dng trong ci t



34/43

CCH THC GI DLL TRONG NG DNG Run-time

NDOW

NDOW

--DLLDLL V d: gi hm MyFunction(LPTSTR) t th vin MYDLL.DLL

typedef VOID (*MYPRO) (LPTSTR);

NHWI

NHWI

NG

NG HINSTANCE hInsLib ;

MYPROC ProcAddr;

LPT

LPT

KT

KT

hInsLib = LoadLibrary(MYDLL);

if (hInsLib !=NULL)

CPH

CPH

LIN

LIN

ProcAddr = (MYPRO) GetProcessAddress(hInsLib,MyFunction);

if (ProcAddr !=NULL)

NGH

NGH

VIN

VIN {

(ProcAddr)(A parameter string) ;

BIG

BIG

THTH

ree rary ns ;

}


XY DNG TH VIN DLL BNG MFC


35/43

XY DNG THVIN DLL BNG MFC

NDOW

NDOW

--DLLDLL

Xy dng th vin MFC Extention DLL MyFirstDLL

NHWI

NHWI

NG

NG

c ass _ _ y ass : pu c ec

{

public:

LPT

LPT

KT

KT

void SetFirstName(CString s);

void ShowMessageBox();

CMyClass();

CPH

CPH

LIN

LIN virtual ~CMyClass();

protected:

NGH

NGH

VIN

VIN CString m_FirstName;

};

BIG

BIG

THTH




36/43


NDOW

NDOW

--DLLDLL

Xy dng th vin MFC Extention DLL MyFirstDLL

CM Class::CM Class

NHWI

NHWI

NG

NG {

m FirstName=M FirstDLL Sam le"

LPT

LPT

KT

KT

void CMyClass::ShowMessageBox()

_

}

CPH

CPH

LIN

LIN

AfxMessageBox(m_FirstName);

NGH

NGH

VIN

VIN

void CMyClass::SetFirstName(CString s)

BIG

BIG

THTH m_FirstName = s;


}



37/43


NDOW

NDOW

--DLLDLL

To ng dng MyFirstDLLSample s dng th vinMyFirstDLL

NHWI

NHWI

NG

NG void CMFCSampleDllView::OnLButtonDown(UINT nFlags, CPoint point)

{

// TODO: Add your message handler code here and/or call default

LPT

LPT

KT

KT

CMyClass my;

my.ShowMessageBox();

CPH

CPH

LIN

LIN my.SetFirstName("abc");


NGH

NGH

VIN

VIN

CView::OnLButtonDown(nFlags, point);

BIG

BIG

THTH




38/43


NDOW

NDOW

--DLLDLL

Thay i hm ShowMessageBox trong th vin MyFirstDLL

void CM Class::ShowMessa eBox

NHWI

NHWI

NG

NG {


LPT

LPT

KT

KT }

void CMyClass::ShowMessageBox()

CPH

CPH

LIN

LIN {


AfxMessageBox(DllSample: + m_FirstName);

NGH

NGH

VIN

VIN

}

BIG

BIG

THTH

Copy tp tin MyFirstDLL.DLL vo th mc MyFirstDLLSample\Debug




39/43


NDOW

NDOW

--DLLDLL Run chng trnh MyFirstDLLSampleiu g xy ra khi clickiu g xy ra khi click

NHWI

NHWI

NG

NG

hnh chng trnhhnh chng trnhMyFirstDLLSample

?

LPT

LPT

KT

KT

void CMFCSampleDllView::OnLButtonDown(UINT nFlags, CPoint point)

CPH

CPH

LIN

LIN

CMyClass my;my.ShowMessageBox();

NGH

NGH

VIN

VIN

my.SetFirstName("abc");


BIG

BIG

THTH

CView::OnLButtonDown(nFlags, point);


}



40/43


NDOW

NDOW

--DLLDLL

Xy dng th vin MySecondDLL MFC Extention DLL c sdng resource

NHWI

NHWI

NG

NG

LPT

LPT

KT

KT

CPH

CPH

LIN

LIN

NGH

NGH

VIN

VIN

BIG

BIG

THTH




41/43


NDOW

NDOW

--DLLDLL Lin kt MySecondDLL vi ng dng MyFirstDLLSample

NHWI

NHWI

NG

NG

void CMFCSam leDllView::OnRButtonDown UINT nFla s CPoint oint

#include "MyLoginDlg.h"

LPT

LPT

KT

KT

{

// TODO: Add your message handler code here and/or call default

CPH

CPH

LIN

LIN

dlg.DoModal();

NGH

NGH

VIN

VIN

,

}

BIG

BIG

THTH


TI LIU THAM KHO


42/43

TI LIU THAM KHO

NDOW

NDOW

--DLLDLL

Charles Petzold (1998), Programming Windows Fifth Edition, Microsoft Press Chapter 21

NHWI

NHWI

NG

NG

David J. Kruglinski (1998), Programming Microsoft Visual C++ Fifth Edition,

Microsoft Press Chapter 22

LPT

LPT

KT

KT

CPH

CPH

LIN

LIN

NGH

NGH

VIN

VIN

BIG

BIG

THTH



43/43

NDOW

NDOW

--DLL

DLL

NHWI

NHWI

NG

NG

LPT

LPT

KT

KT

CPH

CPH

LIN

LIN

NGH

NGH

VIN

VIN

BIG

BIG

THTH


Windows Form Bai 8

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Transcript of Windows Form Bai 8