QBasic & Borland Pascal & C/Delphi5.iso/C/BC_502/COMMONDG.PAK/FINDDLG.C

C/C++ Source or Header | 1997-05-06 | 5.0 KB | 197 lines

// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.
//
// Copyright (C) 1993-1995  Microsoft Corporation.  All Rights Reserved.
//
//  MODULE: finddlg.c
//
//  PURPOSE: To show the use of the find and replace common dialogs.
//
//
//  FUNCTIONS:
//    InitFindReplace - Register the windows message for find/rep notifications.
//    CmdFindReplace - Opens the find or replace modeless dialog box.
//    MsgFindReplace - Handle the messages generated by the find/replace dialog.
//
//  COMMENTS:
//
//
//
//  SPECIAL INSTRUCTIONS: N/A
//

#include <windows.h>            // required for all Windows applications
#ifdef WIN16
#include "win16ext.h"           // required only for win16 applications
#include "commdlg.h"
#endif
#include "globals.h"            // prototypes specific to this application
#include "resource.h"

#define CCHMAXFIND 80
#define CCHMAXREPL 80

static HWND hdlg = NULL;        // handle identifying the find/rep dialog

static char szFind[CCHMAXFIND] = {'\0'}; // The string to find
static char szRepl[CCHMAXREPL] = {'\0'}; // The string to replace



//
//  FUNCTION: InitFindReplace(VOID)
//
//  PURPOSE: Register the windows message for find/replace notifications
//
//  PARAMETERS:
//    NONE.
//
//  RETURN VALUE:
//    TRUE - Initialization succeeded - the message was registered.
//    FALSE - Initialization failed - the message was not registered.
//
//  COMMENTS:
//
//

BOOL InitFindReplace(VOID)
{
    msdiMain.rgmsd[0].uMessage = RegisterWindowMessage(FINDMSGSTRING);
    if (msdiMain.rgmsd[0].uMessage == 0)
    {
        MessageBox(
            NULL,
            "RegisterWindowMessage(FINDMSGSTRING) Failed",
            "Find Dialog Initialization",
            MB_ICONINFORMATION|MB_OK
        );
        return FALSE;
    }
    else
    {
        return TRUE;
    }
}


//
//  FUNCTION: CmdFindReplace(HWND, WORD, WORD, HWND)
//
//  PURPOSE: Opens the find or replace modeless dialog box.
//
//  PARAMETERS:
//    hwnd     - The window handle.
//    wCommand - IDM_FIND || IDM_REPLACE
//    wNotify   - Notification number (unused)
//    hwndCtrl - NULL (Unused)
//
//  RETURN VALUE:
//    Always returns 0 - message handled.
//
//  COMMENTS:
//    If a find or replace dialog already exists, this command just
//      brings it to the top.
//
//

#pragma argsused
LRESULT CmdFindReplace(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
{
    static FINDREPLACE fr = {0};   // common dialog box structure

    if (hdlg != NULL)
    {
        BringWindowToTop(hdlg);
        return 0;
    }

    // Initialize the find/replace structure

    fr.lStructSize = sizeof(FINDREPLACE);
    fr.hwndOwner = hwnd;
    fr.lpstrFindWhat = szFind;
    fr.wFindWhatLen = sizeof(szFind);
    fr.lpstrReplaceWith = szRepl;
    fr.wReplaceWithLen = sizeof(szRepl);

    // Display the modeless Find/Replace dialog box.

    if (wCommand == IDM_FIND)
    {
        hdlg = FindText(&fr);
    }
    else
    {
        hdlg = ReplaceText(&fr);
    }

    return 0;
}

//
//  FUNCTION: MsgFindReplace(HWND, UINT, WPARAM, LPARAM)
//
//  PURPOSE: Handle the messages generated by the find/replace dialog.
//
//  PARAMETERS:
//
//    hwnd      - Window handle  (Unused)
//    uMessage  - Message number (Unused)
//    wparam    - Extra data     (Unused)
//    lparam    - LPFINDREPLACE
//
//  RETURN VALUE:
//    Always returns 0 - Message handled
//
//  COMMENTS:
//    If FR_DIALOGTERM flag is set, set hdlg to NULL so that the CmdFindReplace
//    function can open another one when it is called.
//    Otherwise call the user defined FindReplace function with the information
//    about the find/replace to do the real work.
//

#pragma argsused
LRESULT MsgFindReplace(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
{
     LPFINDREPLACE lpfr;

     // Extract a pointer to the FINDREPLACE structure from lParam.

    lpfr = (FINDREPLACE FAR*) lparam;

    // If the system has set the FR_DIALOGTERM flag, invalidate the
    //  handle identifying the dialog box.

    if (lpfr->Flags & FR_DIALOGTERM)
    {
        hdlg = NULL;
        lpfr->Flags &= !FR_DIALOGTERM;
        return 0;
     }

    // If the dialog box is still valid, call the application-defined
    //   search or replace routine

    FindReplace(szFind,
                szRepl,
                (BOOL)(lpfr->Flags & FR_FINDNEXT),
                (BOOL)(lpfr->Flags & FR_REPLACE),
                (BOOL)(lpfr->Flags & FR_REPLACEALL),
                (BOOL)(lpfr->Flags & FR_DOWN),
                (BOOL)(lpfr->Flags & FR_MATCHCASE),
                (BOOL)(lpfr->Flags & FR_WHOLEWORD));

     return 0;
}


BOOL IsFindReplaceMsg(LPMSG lpmsg)
{
    if (hdlg != NULL)
        return IsDialogMessage(hdlg, lpmsg);
    else
        return FALSE;
}