??dll

skice · 发表于 2004-1-14 12:58:00

?????dll??????????????dll????????????????

net_sky · 发表于 2004-1-15 13:49:00

21. ???????

???????????DLL??Microsoft Windows???????????????Windows?????????????????????????????????????Windows???????????????????????????????????????????????????????????????????????
????????????
?

?????????Windows????????????????????????????????????????????????????????????????????????????????????????DLL??????????????????????????????????????????

???????????Windows?????????????????????????????????????????????????(.OBJ)????????(.LIB)??????????????(.RES)????????????Windows?.EXE??????????????????????????????????

KERNEL32.DLL?USER32.DLL?GDI32.DLL??????????KEYBOARD.DRV?SYSTEM.DRV?MOUSE.DRV??????????????????????????????????Windows???????

????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????Windows?????????????????????????????????????????????Windows????????????????????Windows????????????????????????

???????????????????????.EXE?.FON?????????.DLL????.DLL??????????????Windows?????????????????????????LoadLibrary??LoadLibraryEx????????

??????????????????????????????????Windows??????????????????????????????????????????????????????????????????????.LIB??????????LINK??????????????????????????????????????????????????????????????????????????????????????????????????????????ACCOUNT.DLL?????????????????????????????????????????????????????????????????????????????????????????????????????????????

???????????????????????????????3D?????????????GDI3.DLL?DLL??????????????????????????????????????????????????????????????GDI3.DLL???

????????
?

??????????????????????????????????????????????????????????????????????????????????

????????.LIB??????????????????????????????????.EXE????????Microsoft Visual C++???????????C???????????LIBC.LIB?

??????????????????????????????????????.LIB?????????????????????????????????????????????????????.EXE??????????????????????Microsoft?????KERNEL32.LIB?USER32.LIB?GDI32.LIB???Windows?????????????????Rectangle???Rectangle???LINK?????GDI32.DLL????????????????.EXE????????????Windows???GDI32.DLL??????????????

???????????????????????????????????????????????????????????????????????????Windows??????????????????????????????????????????????.EXE??????????????Windows??????Windows??????????MS-DOS????PATH??????????Windows????????????

net_sky · 发表于 2004-1-15 13:49:00

?????DLL
?

????????????????????????????????????????????????????????????????????????DLL?

??????????????????EDRLIB.DLL?DLL???????EDR????????????easy drawing routines??????EDRLIB???????????EdrCenterText????????????????????????????????EDRTEST.EXE?????EDRLIB.DLL?????????

????????????????????????????Visual C++ ????????????Visual C++ ???????workspaces???????projects??????????????????.EXE???????????.DLL??????????????????????????????????????????????????????????????????EDRTEST???????EDRTEST.EXE?????????EDRLIB.DLL??EDRTEST???????????

???????Visual C++????File???????New???????Workspaces??????????????????????Location???????????????????Workspace Name?????EDRTEST???Enter??

???????????????Developer Studio????????EDRTEST?????????????EDRTEST.DSW???????????

?????????????????????File???????New???????Projects??????????????Win32 Application??????Win32 Dynamic-Link Library????????????Add To Current Workspace??????????EDRTEST? ???????????Project Name???EDRLIB???????OK???????Project Name???EDRLIB??Visual C++????Location??????EDRLIB??EDRTEST?????????????????????Location????EDRLIB??????????EDRTEST???????OK????????????????????????DLL????An Empty DLL Project??????Finish??Visual C++?????????EDRLIB.DSP???????EDRLIB.MAK????Tools Options??????B?uild?????????Export Makefile?????

????????????????????File???????New???????Files?????????C/C++ Header File?????????EDRLIB.H?????21-1??????????????????????File????????New???????Files???????????C++ Source File?????????EDRLIB.C???????21-1??????

??21-1  EDRLIB???????
EDRLIB.H
/*--------------------------------------------------------------------------
   EDRLIB.H header file
----------------------------------------------------------------------------*/

#ifdef __cplusplus
#define EXPORT extern "C" __declspec (dllexport)
#else
#define EXPORT __declspec (dllexport)
#endif

EXPORT BOOL CALLBACK EdrCenterTextA (HDC, PRECT, PCSTR) ;
EXPORT BOOL CALLBACK EdrCenterTextW (HDC, PRECT, PCWSTR) ;

#ifdef UNICODE
#define EdrCenterText EdrCenterTextW
#else
#define EdrCenterText EdrCenterTextA
#endif
EDRLIB.C
/*---------------------------------------------------------------------------
   EDRLIB.C -- Easy Drawing Routine Library module
               (c) Charles Petzold, 1998
-----------------------------------------------------------------------------*/
#include  windows.h>
#include "edrlib.h"

int WINAPI DllMain ( HINSTANCE hInstance, DWORD fdwReason, PVOID pvReserved)
{
     return TRUE ;
}

EXPORT BOOL CALLBACK EdrCenterTextA ( HDC hdc, PRECT prc, PCSTR pString)
{
     int  iLength ;
     SIZE size ;

     iLength = lstrlenA (pString) ;
     GetTextExtentPoint32A (hdc, pString, iLength, &size) ;
     return TextOutA (hdc,( prc->right - prc->left - size.cx) / 2,
                              ( prc->bottom - prc->top - size.cy) / 2,
                  pString, iLength) ;
}

EXPORT BOOL CALLBACK EdrCenterTextW (HDC hdc, PRECT prc, PCWSTR pString)
{
     int  iLength ;
     SIZE size ;

     iLength = lstrlenW (pString) ;
     GetTextExtentPoint32W (hdc, pString, iLength, &size) ;
     return TextOutW (hdc, ( prc->right - prc->left - size.cx) / 2,
                           ( prc->bottom - prc->top - size.cy) / 2,
                  pString, iLength) ;
}
??????Release?????????Debug?????EDRLIB.DLL????RELEASE?DEBUG?????EDRLIB.LIB?????????????????EDRLIB.DLL????????????

???????????????????UNICODE?????????Unicode??Unicode?????????????DLL???????????????Unicode??Unicode??????????EDRLIB.C?????EdrCenterTextA?ANSI???EdrCenterTextW???????EdrCenterTextA???????PCSTR???const????????EdrCenterTextW????????PCWSTR???const????????EdrCenterTextA?????lstrlenA?GetTextExtentPoint32A?TextOutA?EdrCenterTextW???lstrlenW?GetTextExtentPoint32W?TextOutW??????UNICODE?????EDRLIB.H?EdrCenterText???EdrCenterTextW??????EdrCenterTextA????????Windows?????

EDRLIB.H?????DllMain????DLL??WinMain?????????????????deinitialization??????????????????????DllMain??TRUE?

?????????????????????EXPORT????DLL?????????????????exported???????????????????????????EDRLIB.LIB?????????????????????????????????????????????EDRLIB.DLL????????EXPORT????????????__declspec?dllexport?????????C++?????????C???????????C++????????name mangling??????????C?C++????????DLL?

net_sky · 发表于 2004-1-15 13:50:00

?????????
?

??????????????????????DllMain???DllMain??????????????????????????????????????DialogBox???????????hInstance??????????DllMain?????????????

fdwReason????????????????Windows???DllMain????????????????????????????Windows??????????????????????????????process??

fdwReason????DLL_PROCESS_ATTACH???????????????????????????????????????????????????????????????????????????????????????????DllMain????DLL_PROCESS_ATTACH????????DLL????????????????DLL_PROCESS_ATTACH???DllMain??????????????

????????DllMain???????0????0???Windows???????

?fdwReason???DLL_PROCESS_DETACH???????????DLL?????????????????????32???Windows??????????????????????????????

??????DLL_THREAD_ATTACH?fdwReason????DllMain????????????????????????????Windows?DLL_THREAD_DETACH?fdwReason????DllMain??????????????????????????????????????????????????DLL_THREAD_ATTACH???DLL_THREAD_DETACH???

?????DLL_THREAD_DETACH????DllMain????????????????????????????????????????????PostMessage???????????????????????????

????
?

??????EDRTEST??????????????????EDRTEST?????EDRLIB.DLL??Visual C++???EDRTEST?????????File???????New??????New?????????Projects???????????Win32 Application?????????Add To Current Workspace??????????EDRTEST????Locations???????EDRTEST???????OK???????????????An Empty Project????Finish??

??File?????????New?????Files??????????C++ Source File?????Add To Project????????EDRTEST?????EDRLIB????????EDRTEST.C???????21-2??????????EdrCenterText????????????????

??21-2  EDRTEST
EDRTEST.C
/*---------------------------------------------------------------------------
   EDRTEST.C -- Program using EDRLIB dynamic-link library
            (c) Charles Petzold, 1998
----------------------------------------------------------------------------*/

#include <windows.h>
#include "edrlib.h"

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("StrProg") ;
     HWND          hwnd ;
     MSG               msg ;
     WNDCLASS      wndclass ;

     wndclass.style          = CS_HREDRAW | CS_VREDRAW ;
     wndclass.lpfnWndProc    = WndProc ;
     wndclass.cbClsExtra = 0 ;
     wndclass.cbWndExtra = 0 ;
     wndclass.hInstance      = hInstance ;
     wndclass.hIcon          = LoadIcon (NULL, IDI_APPLICATION) ;
     wndclass.hCursor    = LoadCursor (NULL, IDC_ARROW) ;
     wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
     wndclass.lpszMenuName    = NULL ;
     wndclass.lpszClassName = szAppName ;

     if (!RegisterClass (&wndclass))
     {
      MessageBox ( NULL, TEXT ("This program requires Windows NT!"),
                  szAppName, MB_ICONERROR) ;
      return 0 ;
   }

     hwnd = CreateWindow (szAppName, TEXT ("DLL Demonstration Program"),
                          WS_OVERLAPPEDWINDOW,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          NULL, NULL, hInstance, NULL) ;

     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;

     while (GetMessage (&msg, NULL, 0, 0))
     {
      TranslateMessage (&msg) ;
      DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}

LRESULT CALLBACK WndProc ( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     HDC          hdc ;
     PAINTSTRUCT ps ;
     RECT         rect ;

     switch (message)
     {
     case WM_PAINT:
      hdc = BeginPaint (hwnd, &ps) ;

      GetClientRect (hwnd, &rect) ;

      EdrCenterText ( hdc, &rect,
                  TEXT ("This string was displayed by a DLL")) ;

      EndPaint (hwnd, &ps) ;
      return 0 ;

     case WM_DESTROY:
      PostQuitMessage (0) ;
      return 0 ;
     }
   return DefWindowProc (hwnd, message, wParam, lParam) ;
}
???????EdrCenterText???EDRTEST.C??EDRLIB.H??????????WM_PAINT?????????

??????????????????????????Project???????Select Active Project?????????EDRLIB???EDRTEST?????EDRTEST????????????????????????????????Project?????????Dependencies????Select Project To Modify?????????EDRTEST????Dependent On The Following Project(s)??????EDRLIB??????????EDRTEST??EDRLIB????????????????EDRTEST?????????????????EDRTEST????????EDRLIB?

??Project???????Settings?????General????????????????EDRLIB????EDRTEST???????????Win32 Release?????????????Intermediate Files???Output Files????RELEASE?????????Win32 Debug?????DEBUG???????????????????EDRLIB.DLL?EDRTEST.EXE???????????????DLL?????????

??Project Setting???????????EDRTEST?????C/C++???????????????Preprocessor Definitions?????UNICODE????Debug???

????????Debug???Release????????EDRTEST.EXE??????Visual C++????????EDRLIB?RELEASE?DEBUG?????EDRLIB.LIB????????EDRLIB.DLL??Developer Studio??EDRTEST?????????????

??EDRTEST.EXE??????EdrCenterText?????????????????EDRLIB.DLL???EdrCenterText????????EDRTEST.EXE??EDRLIB.DLL?

??EDRTEST.EXE??Windows??????????????????????????Windows??????????Windows??????EDRLIB????????Windows?EDRLIB.DLL?????????????EDRLIB???????EDRTEST??EdrCenterText????????EDRLIB?????

?EDRTEST.C????????EDRLIB.H???WINDOWS.H?????EDRLIB.LIB???Windows????????USER32.LIB????????????????EDLIB.DLL??????USER32.DLL????????????????Windows????

???????????????????????

????????DLL??Windows??????????????????DLL???????????????????????????????????????DLL?????????DLL?????????DLL???????????????????????DLL???Windows???????????????

????????????????????????????DLL?????????????????????DLL??????????????????????????????????????????

net_sky · 发表于 2004-1-15 13:50:00

?DLL??????
?

???????Windows??????????????????????????????????????????????DLL????????????????????????????????????????????????????????????????

??????????????????STRPROG???????string program???????????STRLIB????????string library????????STRLIB????????STRPROG????????????STRLIB??????????STRPROG???callback???

STRLIB??????????????????????256?????STRLIB???????????????????????STRLIB??????STRPROG??????????????STRLIB??????????STRPROG?????????????Enter???Delete?????????????????????????????STRPROG?????????????STRLIB???????

???????STRLIB????????????STRLIB???????

EXPORT BOOL CALLBACK AddString (pStringIn)
??pStringIn??????????AddString???????????STRLIB??????????????????????????????????AddString???TRUE???0???????FALSE??0??????????0???????????????????????256???????????FALSE?

STRLIB???STRLIB??????????????

EXPORT BOOL CALLBACK DeleteString (pStringIn)
?????pStringIn??????????????????????????????????DeleteString???TRUE???0???????FALSE??0?????FALSE????????0??????????????

STRLIB?????????????callback????????????STRLIB??????????

EXPORT int CALLBACK GetStrings (pfnGetStrCallBack, pParam)
???????callback????????????

EXPORT BOOL CALLBACK GetStrCallBack (PSTR pString, PVOID pParam)
GetStrings???pfnGetStrCallBack??callback?????callback?????FALSE??0??GetStrings???????????GetStrCallBack?GetStrings?????callback???????pParam???????????????????????

???????????Unicode??????STRLIB????????Unicode??Unicode??????EDRLIB???????????A???W??????????STRLIB?Unicode???????????Unicode?????STRLIB???????????AddStringA?DeleteStringA?GetStringsA??????Unicode??Unicode?????

?STRPROG?STRLIB???????????STRPROG?????EDRTEST????????????21-3?????STRLIB.DLL????????????????

??21-3  STRLI
STRLIB.H
/*----------------------------------------------------------------------------
   STRLIB.H header file
-----------------------------------------------------------------------------*/

#ifdef __cplusplus
#define EXPORT extern "C" __declspec (dllexport)
#else
#define EXPORT __declspec (dllexport)
#endif

     // The maximum number of strings STRLIB will store and their lengths
#define MAX_STRINGS 256
#define MAX_LENGTH  63

     // The callback function type definition uses generic strings

typedef BOOL (CALLBACK * GETSTRCB) (PCTSTR, PVOID) ;

     // Each function has ANSI and Unicode versions

EXPORT BOOL CALLBACK AddStringA (PCSTR) ;
EXPORT BOOL CALLBACK AddStringW (PCWSTR) ;

EXPORT BOOL CALLBACK DeleteStringA (PCSTR) ;
EXPORT BOOL CALLBACK DeleteStringW (PCWSTR) ;

EXPORT int CALLBACK GetStringsA (GETSTRCB, PVOID) ;
EXPORT int CALLBACK GetStringsW (GETSTRCB, PVOID) ;

     // Use the correct version depending on the UNICODE identifier

#ifdef UNICODE
#define AddString AddStringW
#define DeleteString DeleteStringW
#define GetStrings    GetStringsW
#else
#define AddString AddStringA
#define DeleteString DeleteStringA
#define GetStrings    GetStringsA
#endif
STRLIB.C
/*---------------------------------------------------------------------------
   STRLIB.C - Library module for STRPROG program
               (c) Charles Petzold, 1998
----------------------------------------------------------------------------*/

#include <windows.h>
#include <wchar.h>    // for wide-character string functions
#include "strlib.h"

// shared memory section (requires /SECTION:shared,RWS in link options)
#pragma data_seg ("shared")
int    iTotal = 0 ;
WCHAR szStrings [MAX_STRINGS][MAX_LENGTH + 1] = { '\0' } ;
#pragma data_seg ()

#pragma comment(linker,"/SECTION:shared,RWS")

int WINAPI DllMain (HINSTANCE hInstance, DWORD fdwReason, PVOID pvReserved)
{
return TRUE ;
}

EXPORT BOOL CALLBACK AddStringA (PCSTR pStringIn)
{
     BOOL    bReturn ;
     int    iLength ;
     PWSTR pWideStr ;

// Convert string to Unicode and call AddStringW
     iLength = MultiByteToWideChar (CP_ACP, 0, pStringIn, -1, NULL, 0) ;
     pWideStr = malloc (iLength) ;
     MultiByteToWideChar (CP_ACP, 0, pStringIn, -1, pWideStr, iLength) ;
     bReturn = AddStringW (pWideStr) ;
     free (pWideStr) ;

     return bReturn ;
}

EXPORT BOOL CALLBACK AddStringW (PCWSTR pStringIn)
{
     PWSTR pString ;
     int    i, iLength ;

     if (iTotal == MAX_STRINGS - 1)
      return FALSE ;
     if ((iLength = wcslen (pStringIn)) == 0)
      return FALSE ;
      // Allocate memory for storing string, copy it, convert to uppercase
     pString = malloc (sizeof (WCHAR) * (1 + iLength)) ;
     wcscpy (pString, pStringIn) ;
     _wcsupr (pString) ;

      //  Alphabetize the strings
     for (i = iTotal ; i > 0 ; i-)
     {
      if (wcscmp (pString, szStrings[i - 1]) >= 0)
               break ;
      wcscpy (szStrings, szStrings[i - 1]) ;
     }
     wcscpy (szStrings, pString) ;
     iTotal++ ;

     free (pString) ;
     return TRUE ;
}

EXPORT BOOL CALLBACK DeleteStringA (PCSTR pStringIn)
{
     BOOL    bReturn ;
     int    iLength ;
     PWSTR pWideStr ;

      // Convert string to Unicode and call DeleteStringW

     iLength = MultiByteToWideChar (CP_ACP, 0, pStringIn, -1, NULL, 0) ;
     pWideStr = malloc (iLength) ;
     MultiByteToWideChar (CP_ACP, 0, pStringIn, -1, pWideStr, iLength) ;
     bReturn = DeleteStringW (pWideStr) ;
     free (pWideStr) ;

     return bReturn ;
}

EXPORT BOOL CALLBACK DeleteStringW (PCWSTR pStringIn)
{
     int i, j ;
     if (0 == wcslen (pStringIn))
      return FALSE ;
     for (i = 0 ; i < iTotal ; i++)
    {
      if (_wcsicmp (szStrings, pStringIn) == 0)
               break ;
   }
      // If given string not in list, return without taking action
     if (i == iTotal)
      return FALSE ;
      // Else adjust list downward
     for (j = i ; j < iTotal ; j++)
      wcscpy (szStrings[j], szStrings[j + 1]) ;
     szStrings[iTotal-][0] = '\0' ;
     return TRUE ;
}

EXPORT int CALLBACK GetStringsA (GETSTRCB pfnGetStrCallBack, PVOID pParam)
{
     BOOL bReturn ;
     int    i, iLength ;
     PSTR pAnsiStr ;

for (i = 0 ; i < iTotal ; i++)
     {
               // Convert string from Unicode
iLength = WideCharToMultiByte ( CP_ACP, 0, szStrings, -1, NULL, 0, NULL, NULL) ;
pAnsiStr = malloc (iLength) ;
      WideCharToMultiByte ( CP_ACP, 0, szStrings, -1, pAnsiStr, iLength, NULL, NULL) ;

               // Call callback function

bReturn = pfnGetStrCallBack (pAnsiStr, pParam) ;

if (bReturn == FALSE)
               return i + 1 ;

free (pAnsiStr) ;
     }
     return iTotal ;
}

EXPORT int CALLBACK GetStringsW (GETSTRCB pfnGetStrCallBack, PVOID pParam)
{
     BOOL bReturn ;
     int    i ;

     for (i = 0 ; i < iTotal ; i++)
     {
      bReturn = pfnGetStrCallBack (szStrings, pParam) ;
      if (bReturn == FALSE)
               return i + 1 ;
     }
     return iTotal ;
}
??DllMain?????STRLIB????????????????????????EXPORT??????LINK?STRLIB.LIB???????????

net_sky · 发表于 2004-1-15 13:51:00

STRPROG??
?

STRPROG?????21-4????????????????????(Enter?Delete)????????????????????STRPROG??AddString??DeleteString??????????????????GetStrings?????GetStrCallBack??????????

??21-4  STRPROG
STRPROG.C
/*----------------------------------------------------------------------------
   STRPROG.C - Program using STRLIB dynamic-link library
            (c) Charles Petzold, 1998
-----------------------------------------------------------------------------*/

#include <windows.h>
#include "strlib.h"
#include "resource.h"

typedef struct
{
     HDC hdc ;
     int xText ;
     int yText ;
     int xStart ;
     int yStart ;
     int xIncr ;
     int yIncr ;
     int xMax ;
     int yMax ;
}
CBPARAM ;
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
TCHAR szAppName [] = TEXT ("StrProg") ;
TCHAR szString [MAX_LENGTH + 1] ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     HWND      hwnd ;
     MSG msg ;
     WNDCLASS wndclass ;

     wndclass.style          = CS_HREDRAW | CS_VREDRAW ;
     wndclass.lpfnWndProc    = WndProc ;
     wndclass.cbClsExtra = 0 ;
     wndclass.cbWndExtra = 0 ;
     wndclass.hInstance      = hInstance ;
     wndclass.hIcon          = LoadIcon (NULL, IDI_APPLICATION) ;
     wndclass.hCursor            = LoadCursor (NULL, IDC_ARROW) ;
     wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
     wndclass.lpszMenuName    = szAppName ;
     wndclass.lpszClassName = szAppName ;

     if (!RegisterClass (&wndclass))
     {
      MessageBox ( NULL, TEXT ("This program requires Windows NT!"),
                  szAppName, MB_ICONERROR) ;
      return 0 ;
   }

     hwnd = CreateWindow ( szAppName, TEXT ("DLL Demonstration Program"),
                          WS_OVERLAPPEDWINDOW,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          NULL, NULL, hInstance, NULL) ;

     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;

     while (GetMessage (&msg, NULL, 0, 0))
     {
      TranslateMessage (&msg) ;
      DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}

BOOL CALLBACK DlgProc (HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
     switch (message)
     {
     case WM_INITDIALOG:
      SendDlgItemMessage (hDlg, IDC_STRING, EM_LIMITTEXT, MAX_LENGTH, 0) ;
      return TRUE ;

     case WM_COMMAND:
      switch (wParam)
      {
      case IDOK:
               GetDlgItemText (hDlg, IDC_STRING, szString, MAX_LENGTH) ;
               EndDialog (hDlg, TRUE) ;
               return TRUE ;

      case IDCANCEL:
               EndDialog (hDlg, FALSE) ;
               return TRUE ;
              }
     }
     return FALSE ;
}

BOOL CALLBACK GetStrCallBack (PTSTR pString, CBPARAM * pcbp)
{
     TextOut ( pcbp->hdc, pcbp->xText, pcbp->yText,
              pString, lstrlen (pString)) ;

     if ((pcbp->yText += pcbp->yIncr) > pcbp->yMax)
     {
      pcbp->yText = pcbp->yStart ;
      if ((pcbp->xText += pcbp->xIncr) > pcbp->xMax)
               return FALSE ;
     }
     return TRUE ;
}

LRESULT CALLBACK WndProc ( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     static HINSTANCE    hInst ;
     static int         cxChar, cyChar, cxClient, cyClient ;
     static UINT    iDataChangeMsg ;
     CBPARAM            cbparam ;
     HDC                hdc ;
     PAINTSTRUCT    ps ;
     TEXTMETRIC         tm ;

     switch (message)
     {
     case WM_CREATE:
      hInst = ((LPCREATESTRUCT) lParam)->hInstance ;
      hdc = GetDC (hwnd) ;
      GetTextMetrics (hdc, &tm) ;
      cxChar = (int) tm.tmAveCharWidth ;
      cyChar = (int) (tm.tmHeight + tm.tmExternalLeading) ;
      ReleaseDC (hwnd, hdc) ;

               // Register message for notifying instances of data changes

iDataChangeMsg = RegisterWindowMessage (TEXT ("StrProgDataChange")) ;
return 0 ;
     case WM_COMMAND:
      switch (wParam)
      {
      case IDM_ENTER:
               if (DialogBox (hInst, TEXT ("EnterDlg"), hwnd, &DlgProc))
               {
               if (AddString (szString))
                  PostMessage (HWND_BROADCAST, iDataChangeMsg, 0, 0) ;
               else
                     MessageBeep (0) ;
               }
               break ;

      case IDM_DELETE:
if (DialogBox (hInst, TEXT ("DeleteDlg"), hwnd, &DlgProc))
               {
                  if (DeleteString (szString))
                  PostMessage (HWND_BROADCAST, iDataChangeMsg, 0, 0) ;
               else
               MessageBeep (0) ;
               }
        break ;
      }
      return 0 ;

     case WM_SIZE:
      cxClient = (int) LOWORD (lParam) ;
      cyClient = (int) HIWORD (lParam) ;
      return 0 ;

     case WM_PAINT:
      hdc = BeginPaint (hwnd, &ps) ;

      cbparam.hdc = hdc ;
      cbparam.xText = cbparam.xStart = cxChar ;
      cbparam.yText = cbparam.yStart = cyChar ;
      cbparam.xIncr = cxChar * MAX_LENGTH ;
      cbparam.yIncr = cyChar ;
      cbparam.xMax = cbparam.xIncr * (1 + cxClient / cbparam.xIncr) ;
      cbparam.yMax = cyChar * (cyClient / cyChar - 1) ;

      GetStrings ((GETSTRCB) GetStrCallBack, (PVOID) &cbparam) ;

      EndPaint (hwnd, &ps) ;
      return 0 ;

     case WM_DESTROY:
      PostQuitMessage (0) ;
      return 0 ;

     default:
      if (message == iDataChangeMsg)
               InvalidateRect (hwnd, NULL, TRUE) ;
      break ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}
STRPROG.RC ????
//Microsoft Developer Studio generated resource script.
#include "resource.h"
#include "afxres.h"

/////////////////////////////////////////////////////////////////////////////
// Dialog
ENTERDLG DIALOG DISCARDABLE  20, 20, 186, 47
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Enter"
FONT 8, "MS Sans Serif"
BEGIN
LTEXT            "&Enter:",IDC_STATIC,7,7,26,9
EDITTEXT         IDC_STRING,31,7,148,12,ES_AUTOHSCROLL
DEFPUSHBUTTON    "OK",IDOK,32,26,50,14
PUSHBUTTON       "Cancel",IDCANCEL,104,26,50,14
END
DELETEDLG DIALOG DISCARDABLE  20, 20, 186, 47
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
CAPTION "Delete"
FONT 8, "MS Sans Serif"
BEGIN
LTEXT            "&Delete:",IDC_STATIC,7,7,26,9
EDITTEXT         IDC_STRING,31,7,148,12,ES_AUTOHSCROLL
DEFPUSHBUTTON    "OK",IDOK,32,26,50,14
PUSHBUTTON       "Cancel",IDCANCEL,104,26,50,14
END

/////////////////////////////////////////////////////////////////////////////
// Menu
STRPROG MENU DISCARDABLE
BEGIN
MENUITEM "&Enter!",                         IDM_ENTER
MENUITEM "&Delete!",                     IDM_DELETE
END
RESOURCE.H ????
// Microsoft Developer Studio generated include file.
// Used by StrProg.rc

#define IDC_STRING                   1000
#define IDM_ENTER                        40001
#define IDM_DELETE                   40002
#define IDC_STATIC                   -1
STRPROG.C??STRLIB.H??????????STRPROG????STRLIB???????

????STRPROG??????????????????????????STRLIB????????????????????STRPROG?????????????????????????????

net_sky · 发表于 2004-1-15 13:52:00

?STRPROG??????????
?

Windows???Win32?????????????????????????????????????????????????????STRPROG??????????STRLIB????????????????????????????STRPROG????????????????????????????????

????????STRLIB??????????????????????????????????STRLIB???????????????????????

#pragma data_seg ("shared")
int    iTotal = 0 ;
WCHAR szStrings [MAX_STRINGS][MAX_LENGTH + 1] = { '\0' } ;
#pragma data_seg ()
???#pragma?????????????shared?????????????????????????#pragma?????????????????shared????????#pragma?????????????????????????????????????????????????????shared??

???????????shared?????????Project Settings????????Link?????????STRLIB????Project Options?????Release?Debug?????????????????

/SECTION:shared,RWS
??RWS????????????????????????DLL???????????????STRLIB.C???

#pragma comment(linker,"/SECTION:shared,RWS")
?????????iTotal???szStrings?????STRLIB????????????MAX_STRINGS??256??MAX_LENGTH??63??????????????32,772????iTotal????4????256???????????128????

????????????????????????????????????????????????????????????????????/Platform SDK/Windows Base Services/Interprocess Communication/File Mapping?

?????DLL??
?

???????????????????????????????????GetMessage?PeekMessage??????????????????????????????????????????????????????????????????Windows?????????

???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????.EXE?????????????????????????????????

??????????????????????????????CreateWindow???????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????

?????????????????????????????????????????DialogBox???????????????????????????DialogBox?hwndParent?????NULL?

?????????????
?

????????????????????Windows??????????????????????????????????????????????Rectangle???

Rectangle (hdc, xLeft, yTop, xRight, yBottom) ;
?????GDI32.LIB???????????????Rectangle?????????????

?????????????Rectangle????typedef?Rectangle?????????

typedef BOOL (WINAPI * PFNRECT) (HDC, int, int, int, int) ;
?????????

HANDLE hLibrary ;
PFNRECT pfnRectangle ;
???hLibrary??????????lpfnRectangle???Rectangle??????

hLibrary = LoadLibrary (TEXT ("GDI32.DLL"))
pfnRectangle = (PFNPRECT) GetProcAddress (hLibrary, TEXT ("Rectangle"))
?????????????????????LoadLibrary????NULL??????????????????

pfnRectangle (hdc, xLeft, yTop, xRight, yBottom) ;
FreeLibrary (hLibrary) ;
???????????????????Rectangle?????????????????????????????????????????????????????

?????????LoadLibrary?FreeLibrary???Windows??????????????????????LoadLibrary?????????Windows????????????????????????FreeLibrary???????????????????????????????????????Windows???????????????????????

??????
?

??Windows??????????????????????????????????DLL????????????????DLL??????????????

?????????????????Windows?????????????????????????????LoadBitmap???????????????????????????????????Windows??????????????????????????????????????????????????????????????

??21-5????????9???????BITLIB.DLL??????????BITLIB.RC????????????????????????????????BITLIB.DLL???9???BITMAP1.BMP?BITMAP2.BMP???????????????????????????Visual C++????????????ID?1?9????

??21-5  BITLIB
BITLIB.C
/*--------------------------------------------------------------
   BITLIB.C -- Code entry point for BITLIB dynamic-link library
               (c) Charles Petzold,  1998
------------------------------------------------------------------*/

#include <windows.h>
int WINAPI DllMain (HINSTANCE hInstance, DWORD fdwReason, PVOID pvReserved)
{
     return TRUE ;
}
BITLIB.RC ????
//Microsoft Developer Studio generated resource script.
#include "resource.h"
#include "afxres.h"
/////////////////////////////////////////////////////////////////////////////
// Bitmap
1                BITMAP  DISCARDABLE    "bitmap1.bmp"
2                BITMAP  DISCARDABLE    "bitmap2.bmp"
3                BITMAP  DISCARDABLE    "bitmap3.bmp"
4                BITMAP  DISCARDABLE    "bitmap4.bmp"
5                BITMAP  DISCARDABLE    "bitmap5.bmp"
6                BITMAP  DISCARDABLE    "bitmap6.bmp"
7                BITMAP  DISCARDABLE    "bitmap7.bmp"
8                BITMAP  DISCARDABLE    "bitmap8.bmp"
9                BITMAP  DISCARDABLE    "bitmap9.bmp"
???SHOWBIT????????BITLIB??????SHOWBIT????????????21-6???SHOWBIT?????????????????BITLIB???SHOWBIT????????????BITLIB.LIB???????BITLIB???????????????BITLIB.LIB????????????BITLIB?SHOWBIT?????????????Active Project?????????

SHOWBIT.C?BITLIB??????????????????????????????????

??21-6  SHOWBIT
SHOWBIT.C
/*--------------------------------------------------------------------------
   SHOWBIT.C -- Shows bitmaps in BITLIB dynamic-link library
            (c) Charles Petzold, 1998
---------------------------------------------------------------------------*/

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

TCHAR szAppName [] = TEXT ("ShowBit") ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     HWND      hwnd ;
     MSG       msg ;
     WNDCLASS wndclass ;

     wndclass.style          = CS_HREDRAW | CS_VREDRAW ;
     wndclass.lpfnWndProc    = WndProc ;
     wndclass.cbClsExtra = 0 ;
     wndclass.cbWndExtra = 0 ;
     wndclass.hInstance       = hInstance ;
     wndclass.hIcon          = LoadIcon (NULL, IDI_APPLICATION) ;
     wndclass.hCursor    = LoadCursor (NULL, IDC_ARROW) ;
     wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
     wndclass.lpszMenuName  = NULL ;
     wndclass.lpszClassName = szAppName ;

     if (!RegisterClass (&wndclass))
   {
     MessageBox ( NULL, TEXT ("This program requires Windows NT!"),
                  szAppName, MB_ICONERROR) ;
      return 0 ;
   }

   hwnd = CreateWindow (szAppName,
         TEXT ("Show Bitmaps from BITLIB (Press Key)"),
               WS_OVERLAPPEDWINDOW,
               CW_USEDEFAULT, CW_USEDEFAULT,
               CW_USEDEFAULT, CW_USEDEFAULT,
               NULL, NULL, hInstance, NULL) ;

if (!hwnd)
      return 0 ;
     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;

while (GetMessage (&msg, NULL, 0, 0))
     {
      TranslateMessage (&msg) ;
      DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}

void DrawBitmap (HDC hdc, int xStart, int yStart, HBITMAP hBitmap)
{
     BITMAP bm ;
     HDC    hMemDC ;
     POINT    pt ;

     hMemDC = CreateCompatibleDC (hdc) ;
     SelectObject (hMemDC, hBitmap) ;
     GetObject (hBitmap, sizeof (BITMAP), &bm) ;
     pt.x = bm.bmWidth ;
     pt.y = bm.bmHeight ;

BitBlt (hdc, xStart, yStart, pt.x, pt.y, hMemDC, 0, 0, SRCCOPY) ;
     DeleteDC (hMemDC) ;
}

LRESULT CALLBACK WndProc ( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     static HINSTANCE hLibrary ;
     static int    iCurrent = 1 ;
     HBITMAP       hBitmap ;
     HDC               hdc ;
     PAINTSTRUCT       ps ;

     switch (message)
     {
     case WM_CREATE:
      if ((hLibrary = LoadLibrary (TEXT ("BITLIB.DLL"))) == NULL)
      {
         MessageBox ( hwnd, TEXT ("Can't load BITLIB.DLL."),
                     szAppName, 0) ;
         return -1 ;
   }
      return 0 ;

     case WM_CHAR:
      if (hLibrary)
      {
               iCurrent ++ ;
               InvalidateRect (hwnd, NULL, TRUE) ;
      }
      return 0 ;
     case WM_PAINT:
      hdc = BeginPaint (hwnd, &ps) ;

      if (hLibrary)
      {
               hBitmap = LoadBitmap (hLibrary, MAKEINTRESOURCE (iCurrent)) ;

               if (!hBitmap)
               {
                    iCurrent = 1 ;
                    hBitmap = LoadBitmap ( hLibrary,
                                    MAKEINTRESOURCE (iCurrent)) ;
               }
               if (hBitmap)
               {
                    DrawBitmap (hdc, 0, 0, hBitmap) ;
                    DeleteObject (hBitmap) ;
            }
      }
      EndPaint (hwnd, &ps) ;
      return 0 ;

     case WM_DESTROY:
      if (hLibrary)
               FreeLibrary (hLibrary) ;

      PostQuitMessage (0) ;
      return 0 ;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}
???WM_CREATE???????SHOWBIT???BITLIB.DLL????

if ((hLibrary = LoadLibrary (TEXT ("BITLIB.DLL"))) == NULL)
??BITLIB.DLL?SHOWBIT.EXE????????Windows????????????????LoadLibrary??NULL?SHOWBIT????????????????WM_CREATE????-1?????WinMain??CreateWindow????NULL??????????

SHOWBIT????????????????LoadBitmap?????????????

hBitmap = LoadBitmap (hLibrary, MAKEINTRESOURCE (iCurrent)) ;
????iCurrent????????????????????????????????

???WM_DESTROY????SHOWBIT??????

FreeLibrary (hLibrary) ;
?SHOWBIT?????????????BITLIB.DLL???????0?????????????????????????????????????????????????????????????metafile????metafile????????????????????

lsaturn · 发表于 2004-1-15 14:58:00

?????Windows Programming?????

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