FIND.C

/************************************************************************ 
 
  File: find.c 
 
  Purpose: 
 
     Manages CDTEST's find/replace dialog box. 
 
  Functions: 
 
    - lpfnFilterProc()      -- A callback function for a filter that must be 
                               installed if a modeless dialog is created with 
                               another dialog as its parent. 
 
    - DoFindDialog()        -- Creates CDTEST's Open/Save dialog. 
 
    - FindProc()            -- Callback function for CDTEST's Find/Replace dlg. 
 
    - InitFindStruct()      -- Fills a FINDREPLACE structure with some defaults. 
 
    - FillFindDlg()         -- Fills CDTESTs Find/Replace dialog with the contents 
                               of a FINDREPLACE structure. 
 
    - GetFindDlg()          -- Retrieves the users edit's from CDTEST's find/ 
                               replace dialog and puts them in a FINDREPLACE 
                               structure. 
 
    - FindReplaceHookProc() -- Callback function for FindText() or ReplaceText() 
                               which will be called if either of these dialogs 
                               is created with the FR_ENABLEHOOK flag. 
 
    - GetFindDlgHandle()    -- Returns a handle to a preloaded FindText() template. 
 
    - GetReplaceDlgHandle() -- Returns a handle to a preloaded ReplaceText() template. 
 
    - DoFindRepStuff()      -- Calls FindText() or ReplaceText(). 
 
 
  NOTE: CDTEST does not multithread the FindText() or the ReplaceText() 
        common dialogs.  The reason for this is that since these dialogs 
        are modeless, their creation functions return immediately after the 
        dialogs are created as opposed to other dialog functions that 
        don't return until after the dialog has been destroyed by the user. 
 
        As a result, any threads that create modeless dialogs will end 
        immediately unless the threads themselves have separate message 
        loops.  For the sake of clarity, this functionality has not been 
        added to CDTEST. 
 
************************************************************************/ 
 
 
#include <windows.h> 
#include <commdlg.h> 
#include <stdlib.h> 
#include <winnls.h> 
#include "cdtest.h" 
#include "find.h" 
#include "replace.h" 
 
 
/* All functions used in this module + some exported ones */ 
 
void InitFindStruct(HWND, LPFINDREPLACE) ; 
void FillFindDlg(HWND, LPFINDREPLACE) ; 
void GetFindDlg(HWND, LPFINDREPLACE) ; 
extern UINT uMode ; 
extern LONG MyAtol(LPTSTR, BOOL, LPBOOL) ; 
UINT APIENTRY FindReplaceHookProc(HWND, UINT, UINT, LONG) ; 
void DoFindRepStuff(LPFINDREPLACE) ; 
 
 
 
/* All global variables used in this module */ 
 
HWND hwndFind ; 
HWND hwndMainDialog ; 
 
FINDREPLACE fr ; 
LPFINDREPLACE lpFr ; 
 
TCHAR szFindWhat[100] ; 
TCHAR szReplaceWith[100] ; 
TCHAR szTemplate[40] ; 
 
HANDLE hResFind, hDialogFind ; 
HANDLE GetFindDlgHandle(void) ; 
HANDLE GetReplaceDlgHandle(void) ; 
 
HBRUSH hBrushDlg ; 
HBRUSH hBrushEdit ;    //brush handles for new colors done with hook proc 
HBRUSH hBrushButton ; 
 
 
 
 
 
/************************************************************************ 
 
  Function: lpfnFilterProc(int, WPARAM, LAPRAM) 
 
  Purpose: This is needed if a modeless dialog is created with its parent 
           as another dialog box. 
 
 
  Returns: TRUE if the message was handled and FALSE if not. 
 
  Comments: 
 
    The reason for this is that the DialogBox() procedure does not call 
    the IsDialogMessage() function before it processes messages, so we 
    need to install a hook function to do it for us. 
 
************************************************************************/ 
 
 
LRESULT CALLBACK lpfnFilterProc(int nCode, WPARAM wParam, LPARAM lParam) 
{ 
  static bFirstTime = TRUE ; 
 
  if (nCode < 0) 
    return CallNextHookEx(hHook, nCode, wParam, lParam) ; 
 
  if (nCode == MSGF_DIALOGBOX && bFirstTime) 
  { 
    bFirstTime = FALSE ; 
 
    if (hwndFind && IsDialogMessage(hwndFind, (LPMSG) lParam)) 
    { 
      bFirstTime = TRUE ; 
      return 1L ; 
    } 
 
    else 
    { 
      bFirstTime = TRUE ; 
      return 0L ; 
    } 
  } 
  else return 0L ; 
} 
 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: DoFindDialog(HWND) 
 
  Purpose: This function installs the Hook function, creates the Find/ 
           Replace dialog, and un-installs the Hook. 
 
  Returns: Nothing. 
 
  Comments: 
 
************************************************************************/ 
 
void DoFindDialog(HWND hwnd) 
{ 
  bDoFindDlg = TRUE ; 
 
  /* this is a little different than the others.  If the dialog is just 
     created normally, it will make no IsDlgMessage() checks and the 
     find/replace dialogs will have no keyboard input (i.e. tabbing and 
     alt+key-ing from control to control.  To fix this, a message hook 
     and message filter have to be installed 
 
     It must be set to only look at the input for the current thread, or other 
     programs will be interrupted by this hook also. 
  */ 
 
  hHook = SetWindowsHookEx(WH_MSGFILTER, lpfnFilterProc, 
                           hInst, GetCurrentThreadId()) ; 
 
  if (!hHook) return ; 
 
  DialogBox(hInst, MAKEINTRESOURCE(ID_FINDDIALOG), hwnd, FindProc) ; 
 
  UnhookWindowsHookEx(hHook) ; 
 
} 
 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: FindProc(HWND, UINT, UINT, LONG) 
 
  Purpose: This is the callback function for the CDTEST's Find/Replace 
           Dialog. 
 
  Returns: TRUE or FALSE depending on the situation. 
 
  Comments: 
 
************************************************************************/ 
 
BOOL APIENTRY FindProc(HWND hwnd, UINT msg, UINT wParam, LONG lParam) 
{ 
  switch (msg) 
  { 
    case WM_INITDIALOG: 
 
        if (bDoFindDlg) 
          SetWindowText(hwnd, TEXT("FindText()")) ; 
        else 
          SetWindowText(hwnd, TEXT("ReplaceText()")) ; 
 
        InitFindStruct(hwnd, &fr) ; 
        FillFindDlg(hwnd, &fr) ; 
 
        hwndMainDialog = hwnd ; 
 
 
        /* The find and replace dialogs are a lot harder to multithread because they 
           are modeless.  Modeless dialog creation functions return right after the 
           dialog is created.  Since ExitThread will be called at this point, it is 
           probably not possible to multithread these dialogs without a separate 
           GetMessage() loop. 
        */ 
 
 
        EnableWindow(GetDlgItem(hwnd, ID_MULTITHREADFINDREP), FALSE) ; 
 
        SetFocus(GetDlgItem(hwnd, ID_STRUCTSIZEFT)) ; 
 
        break ; 
 
 
    case WM_COMMAND: 
    { 
        switch (LOWORD(wParam)) 
        { 
          case IDOK: 
            GetFindDlg(hwnd, &fr) ; 
            DoFindRepStuff(&fr) ; 
            break ; 
 
          case ID_RESETFIND: 
            SendDlgItemMessage(hwnd, ID_FRNULLSTRUCT, BM_SETCHECK, (WPARAM)0, (LPARAM)0) ; 
            SendDlgItemMessage(hwnd, ID_PRELOADEDFIND, BM_SETCHECK, (WPARAM)0, (LPARAM)0) ; 
            InitFindStruct(hwnd, &fr) ; 
            FillFindDlg(hwnd, &fr) ; 
            SetFocus(GetDlgItem(hwnd, ID_STRUCTSIZEFT)) ; 
            break ; 
 
          case IDCANCEL: 
            EndDialog(hwnd, FALSE) ; 
 
            break ; 
 
 
          default: break ; 
        } 
 
    } 
 
    default: 
 
 
    /* nFindMsg is registered at program startup (see CDTEST.c).  The 
       FindText() and ReplaceText() dialogs will communicate with the 
       calling application via this message. */ 
 
    if (msg == nFindMsg) 
    { 
        lpFr = (LPFINDREPLACE) lParam ; 
 
        if (lpFr->Flags & FR_DIALOGTERM) 
        { 
          PostMessage(hwnd, UMSG_DECREMENTDLGCOUNT, 0, 0L) ; 
 
          if (hDialogFind) 
          { 
            FreeResource(hDialogFind) ; 
            hDialogFind = (HANDLE) 0 ; 
            hResFind = (HANDLE) 0 ; 
          } 
 
          hwndFind = (HWND) 0 ; 
        } 
 
        FillFindDlg(hwnd, &fr) ; 
 
        wsprintf(szTemp, szLongFilter, CommDlgExtendedError()) ; 
        SetDlgItemText(hwnd, ID_ERRORFT, szTemp) ; 
 
        wsprintf(szTemp, szLongFilter, hwndFind) ; 
        SetDlgItemText(hwnd, ID_RETURNFT, szTemp) ; 
    } 
 
 
    /* If the help button is pressed in the FindText() or ReplaceText() 
       dialogs, it will send a message Registered with RegisterWindowMessage() 
       to the parent window.  The message nHelpMessage was registered 
       at application startup */ 
 
    if (msg == nHelpMessage) 
      MessageBox(GetForegroundWindow(), TEXT("Hello from the help button"), 
                 TEXT("Find Help Button"), MB_OK | MB_APPLMODAL) ; 
 
    break ; 
  } 
 
  return FALSE ; 
} 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: InitFindStruct(HWND, LPFINDREPLACE) 
 
  Purpose: Fills a FINDREPLACE structure with some defaults. 
 
 
  Returns: Nothing. 
 
  Comments: 
 
************************************************************************/ 
 
void InitFindStruct(HWND hwnd, LPFINDREPLACE pfr) 
{ 
  pfr->lStructSize = (DWORD) sizeof(FINDREPLACE) ; 
  pfr->hwndOwner = hwnd ; 
  pfr->hInstance = (HANDLE) hInst ; 
  pfr->Flags = FR_DOWN | FR_SHOWHELP  ; 
 
  lstrcpy(szFindWhat, TEXT("Word to find")) ; 
  pfr->lpstrFindWhat = szFindWhat ; 
  pfr->wFindWhatLen = 100 ; 
 
  lstrcpy(szReplaceWith, TEXT("Replace with word")) ; 
  pfr->lpstrReplaceWith = szReplaceWith ; 
  pfr->wReplaceWithLen = 100 ; 
 
  pfr->lCustData = (DWORD) 0 ; 
 
  pfr->lpfnHook = FindReplaceHookProc ; 
 
  lstrcpy(szTemplate, TEXT("fttemp1")) ; 
 
  pfr->lpTemplateName = szTemplate ; 
} 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: FillFindDlg(HWND, LPFINDREPLACE) 
 
  Purpose:  Fills CDTEST's Find/Replace dialog with the contents of a 
            FINDREPLACE structure. 
 
  Returns:  Nothing. 
 
  Comments: 
 
************************************************************************/ 
 
void FillFindDlg(HWND hwnd, LPFINDREPLACE pfr) 
{ 
  wsprintf(szTemp, szLongFilter, pfr->lStructSize) ; 
  SetDlgItemText(hwnd, ID_STRUCTSIZEFT, szTemp) ; 
 
  wsprintf(szTemp, szLongFilter, (DWORD) pfr->hwndOwner) ; 
  SetDlgItemText(hwnd, ID_HWNDOWNERFT, szTemp) ; 
 
  wsprintf(szTemp, szLongFilter, (DWORD) pfr->hInstance) ; 
  SetDlgItemText(hwnd, ID_HINSTANCEFT, szTemp) ; 
 
  wsprintf(szTemp, szLongFilter, pfr->Flags) ; 
  SetDlgItemText(hwnd, ID_FLAGSFT, szTemp) ; 
 
  SetDlgItemText(hwnd, ID_FINDWHATFT, pfr->lpstrFindWhat) ; 
 
  wsprintf(szTemp, szLongFilter, pfr->wFindWhatLen) ; 
  SetDlgItemText(hwnd, ID_FINDWHATLENFT, szTemp) ; 
 
  SetDlgItemText(hwnd, ID_REPLACEWITHFT, pfr->lpstrReplaceWith) ; 
 
  wsprintf(szTemp, szLongFilter, pfr->wReplaceWithLen) ; 
  SetDlgItemText(hwnd, ID_REPLACEWITHLENFT, szTemp) ; 
 
  wsprintf(szTemp, szLongFilter, pfr->lCustData) ; 
  SetDlgItemText(hwnd, ID_CUSTDATAFT, szTemp) ; 
 
  wsprintf(szTemp, szLongFilter, (DWORD) pfr->lpfnHook) ; 
  SetDlgItemText(hwnd, ID_HOOKFT, szTemp) ; 
 
  SetDlgItemText(hwnd, ID_TEMPLATEFT, pfr->lpTemplateName) ; 
} 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: GetFindDlg(HWND, LPFINDREPLACE) 
 
  Purpose:  Fills a FINDREPLACE structure with the user's edits in CDTEST's 
            Find/Replace dialog. 
 
  Returns:  Nothing. 
 
  Comments: 
 
************************************************************************/ 
 
void GetFindDlg(HWND hwnd, LPFINDREPLACE pfr) 
{ 
  TCHAR szNum[30] ; 
  BOOL b ; 
 
  #define WSIZEFR 30 
 
  GetDlgItemText(hwnd, ID_STRUCTSIZEFT, szNum, WSIZEFR) ; 
  pfr->lStructSize = MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
  GetDlgItemText(hwnd, ID_HWNDOWNERFT, szNum, WSIZEFR) ; 
  pfr->hwndOwner = (HWND) MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
  GetDlgItemText(hwnd, ID_HINSTANCEFT, szNum, WSIZEFR) ; 
  pfr->hInstance = (HANDLE) MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
  GetDlgItemText(hwnd, ID_FLAGSFT, szNum, WSIZEFR) ; 
  pfr->Flags = MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
 
  GetDlgItemText(hwnd, ID_FINDWHATFT, szFindWhat, 100) ; 
 
  GetDlgItemText(hwnd, ID_REPLACEWITHFT, szReplaceWith, 100) ; 
 
 
  GetDlgItemText(hwnd, ID_FINDWHATLENFT, szNum, WSIZEFR) ; 
  pfr->wFindWhatLen = (WORD) MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
  GetDlgItemText(hwnd, ID_REPLACEWITHLENFT, szNum, WSIZEFR) ; 
  pfr->wReplaceWithLen = (WORD) MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
  GetDlgItemText(hwnd, ID_CUSTDATAFT, szNum, WSIZEFR) ; 
  pfr->lCustData = MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
  GetDlgItemText(hwnd, ID_HOOKFT, szNum, WSIZEFR) ; 
  pfr->lpfnHook = (LPFRHOOKPROC) MyAtol(szNum, uMode == IDM_HEXMODE, &b) ; 
 
  GetDlgItemText(hwnd, ID_TEMPLATEFT, szTemplate, 40) ; 
} 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: FindReplaceHookProc(HWND, UINT, UINT, LONG) 
 
  Purpose:  Is the callback function that will be called by FindText() 
            or ReplaceText() if the function is called with the 
            FR_ENABLEHOOK flag. 
 
 
  Returns:  TRUE to discard the message, and FALSE to instruct the common 
            dialogs to process the message with the default logic. 
 
  Comments: 
 
     NOTE! 
 
     If the application returns FALSE in response to the WM_INITDIALOG 
     message, it is then responsible for displaying the dialog by 
     calling ShowWindow() and UpdateWindow(). 
 
***********************************************************************/ 
 
 
UINT APIENTRY FindReplaceHookProc(HWND hwnd, UINT msg, UINT wParam, LONG lParam) 
{ 
  LPFINDREPLACE pFr ; 
  TCHAR szMsg[75] ; 
  TCHAR szTmp[20] ; 
  int i ; 
  TCHAR szDefString[] = TEXT("Default String ") ; 
 
  switch(msg) 
  { 
    case WM_INITDIALOG: 
 
      pFr = (LPFINDREPLACE) lParam ; 
 
      if (pFr->lCustData != 0L) 
      { 
        wsprintf(szMsg, TEXT("FINDREPLACE->lCustData is: %ld"), pFr->lCustData) ; 
 
        MessageBox(hwnd, szMsg, TEXT("lCustData Sent!"), MB_OK | MB_APPLMODAL) ; 
      } 
 
      SetWindowText(hwnd, TEXT("Find Hook Proc Dialog")) ; 
 
      if (GetDlgItem(hwnd, ID_DEFSTRINGS)) 
      { 
        for (i=0; i<5; i++) 
        { 
          lstrcpy(szMsg, szDefString) ; 
          wsprintf(szTmp, TEXT("Number %d"), i+1) ; 
          lstrcat(szMsg, szTmp) ; 
          SendDlgItemMessage(hwnd, ID_DEFSTRINGS, LB_ADDSTRING, (WPARAM) 0, 
                             (LONG) (LPTSTR) szMsg) ; 
        } 
      } 
 
      return TRUE ; 
 
      break ; 
 
 
 
    /* use the WM_CTLCOLOR* messages to change the color of the Open 
       dialog */ 
 
    case WM_CTLCOLORDLG: 
 
        if (!hBrushDlg) 
            hBrushDlg = GetStockObject(LTGRAY_BRUSH) ; 
 
        return (UINT) hBrushDlg ; 
 
        break ; 
 
 
    case WM_CTLCOLORBTN: 
 
        SetBkMode((HDC) wParam, TRANSPARENT) ;   //sets background color 
                                                 //for push and check box 
                                                 //buttons... 
 
        if (!hBrushButton) 
            hBrushButton = GetStockObject(LTGRAY_BRUSH) ; 
 
        return (UINT) hBrushButton ; 
 
        break ; 
 
 
    case WM_CTLCOLORSTATIC: 
 
        SetTextColor((HDC) wParam, RGB(0x00, 0xff, 0x00)) ;  //green 
        SetBkMode((HDC) wParam, TRANSPARENT) ;               //transparent text 
 
        if (!hBrushDlg) 
            hBrushDlg = GetStockObject(LTGRAY_BRUSH) ; 
 
        return (UINT) hBrushDlg ; 
 
        break ; 
 
 
    default: 
      break ; 
  } 
 
  return FALSE ;   //send msg to the common dialog code 
} 
 
 
 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: GetFindDlgHandle(void) 
 
  Purpose:  Finds, loads, and returns a handle to the custom template 
            for FindText() in CDTEST.EXE. 
 
  Returns:  HANDLE to the dialog resource. 
 
  Comments: 
 
************************************************************************/ 
 
HANDLE GetFindDlgHandle(void) 
{ 
  hResFind = FindResource(hInst, TEXT("fttemp1"), RT_DIALOG) ; 
 
  hDialogFind = LoadResource(hInst, hResFind) ; 
 
 
  return hDialogFind ; 
} 
 
 
 
 
 
/************************************************************************ 
 
  Function: GetReplaceDlgHandle(void) 
 
  Purpose:  Finds, loads, and returns a handle to the custom template 
            for ReplaceText() in CDTEST.EXE. 
 
  Returns:  HANDLE to the dialog resource. 
 
  Comments: 
 
************************************************************************/ 
 
HANDLE GetReplaceDlgHandle(void) 
{ 
  hResFind = FindResource(hInst, TEXT("fttemp2"), RT_DIALOG) ; 
 
  hDialogFind = LoadResource(hInst, hResFind) ; 
 
  return hDialogFind ; 
} 
 
 
 
 
 
 
/************************************************************************ 
 
  Function: DoFindReplaceStuff(LPFINDREPLACE) 
 
  Purpose:  Calls FindText() or ReplaceText(). 
 
  Returns:  Nothing: 
 
  Comments: 
 
************************************************************************/ 
 
void DoFindRepStuff(LPFINDREPLACE pfr) 
{ 
  if (IsDlgButtonChecked(hwndMainDialog, ID_PRELOADEDFIND) == 1) 
  { 
    if (bDoFindDlg) 
      pfr->hInstance = GetFindDlgHandle() ; 
    else 
      pfr->hInstance = GetReplaceDlgHandle() ; 
  } 
 
  if (bDoFindDlg) 
  { 
    if (IsDlgButtonChecked(hwndMainDialog, ID_FRNULLSTRUCT) == 1) 
    { 
        hwndFind = FindText((LPFINDREPLACE) NULL) ; 
    } 
    else 
    { 
        hwndFind = FindText(pfr) ; 
    } 
  } 
  else 
  { 
    if (IsDlgButtonChecked(hwndMainDialog, ID_FRNULLSTRUCT) == 1) 
    { 
        hwndFind = ReplaceText((LPFINDREPLACE) NULL) ; 
    } 
    else 
    { 
        hwndFind = ReplaceText(pfr) ; 
    } 
 
  } 
 
 
  wsprintf(szTemp, szLongFilter, CommDlgExtendedError()) ; 
  SetDlgItemText(hwndMainDialog, ID_ERRORFT, szTemp) ; 
 
  wsprintf(szTemp, szLongFilter, hwndFind) ; 
  SetDlgItemText(hwndMainDialog, ID_RETURNFT, szTemp) ; 
}