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1.1 root 1:
2: /******************************************************************************\
3: * This is a part of the Microsoft Source Code Samples.
4: * Copyright (C) 1993 Microsoft Corporation.
5: * All rights reserved.
6: * This source code is only intended as a supplement to
7: * Microsoft Development Tools and/or WinHelp documentation.
8: * See these sources for detailed information regarding the
9: * Microsoft samples programs.
10: \******************************************************************************/
11:
12: #include "PortTool.h"
13:
14: /* global search string */
15: char lpszSearch[MAXSEARCHSTRING+1] = "";
16: HWND hDlgSearch;
17:
18: FINDREPLACE frSearch;
19:
20:
21: /* compare two substrings */
22: BOOL WINAPI RealSlowCompare (WORD, char *, char *);
23: BOOL WINAPI RealSlowCompare (
24: WORD wCase,
25: char *lpszSubject,
26: char *lpszTarget)
27: {
28: if (wCase)
29: {
30: while (*lpszTarget)
31: if (*lpszTarget++ != *lpszSubject++)
32: return FALSE;
33: }
34: else
35: {
36: /* convert to lower case before comparing */
37: CharLower ((char *)lpszTarget);
38: while (*lpszTarget)
39: if (*lpszTarget++ != (CHAR)(DWORD)CharLower ((char *)(DWORD)(BYTE)*lpszSubject++))
40: return FALSE;
41: }
42: return TRUE;
43: }
44:
45:
46:
47:
48: /* invoke the common search/replace dialog */
49: BOOL WINAPI FindDialog (
50: HWND hWnd,
51: WORD wCase,
52: WORD wDir,
53: char *lpszInit)
54: {
55: frSearch.lStructSize = sizeof (FINDREPLACE);
56: frSearch.hwndOwner = hWnd;
57: frSearch.hInstance = (HANDLE)GetWindowLong (hWnd, GWL_HINSTANCE);
58: frSearch.Flags = 0;
59:
60: /* if wCase, case sensitive */
61: if (wCase)
62: frSearch.Flags |= FR_MATCHCASE;
63: /* if wDir, search forward */
64: if (wDir)
65: frSearch.Flags |= FR_DOWN;
66:
67: frSearch.lpstrFindWhat = lpszInit;
68: frSearch.lpstrReplaceWith = NULL;
69: frSearch.wFindWhatLen = MAXSEARCHSTRING+1;
70: frSearch.wReplaceWithLen = 0;
71: frSearch.lCustData = 0;
72: frSearch.lpfnHook = NULL;
73: frSearch.lpTemplateName = NULL;
74:
75: /* call common search dialog */
76: if (hDlgSearch = FindText (&frSearch))
77: return TRUE;
78: else
79: return FALSE;
80: }
81:
82:
83:
84: /* perform the actual text searching in the edit control data */
85: BOOL WINAPI LocateText (
86: HWND hWnd,
87: WORD wCase,
88: WORD wDir,
89: char *lpszStr)
90: {
91: UINT uBegSel, uEndSel, uOrgBegSel, uOrgEndSel;
92: HANDLE hEditData;
93: HWND hWndEdit = (HANDLE)GetWindowLong (hWnd, WL_HWNDEDIT);
94: char *lpEditData;
95: UINT uLen;
96: int nStrLen = strlen (lpszStr);
97: int nChars;
98:
99: /* test for valid string */
100: if (!*lpszStr)
101: return FALSE;
102:
103: /* locate beginning of selected text */
104: SendMessage (hWndEdit, EM_GETSEL, (UINT)&uBegSel, (UINT)&uEndSel);
105: uOrgBegSel = uBegSel;
106: uOrgEndSel = uEndSel;
107:
108: /* get length of the text */
109: uLen = (UINT)SendMessage (hWndEdit, WM_GETTEXTLENGTH, 0, 0);
110:
111: /* Get handle to edit text data and lock it */
112: hEditData = (HANDLE)SendMessage (hWndEdit, EM_GETHANDLE, 0, 0);
113: lpEditData = LocalLock (hEditData);
114:
115: /* advance starting point past selection one char */
116: lpEditData += (wDir ? ++uBegSel : --uBegSel);
117:
118: /* count characters to search (either forward to end of file or back to beginning) */
119: if (wDir)
120: nChars = (int)(uLen - uBegSel + 1 - nStrLen);
121: else
122: nChars = (int)uBegSel;
123:
124: /* compare character by character for a substring match */
125: while (nChars >= nStrLen)
126: {
127: /* compare this substring for a match */
128: if (RealSlowCompare (wCase, lpEditData, lpszStr))
129: {
130: /* string found, cleanup and go away */
131: LocalUnlock(hEditData);
132:
133: /* scroll parent edit control and select offending text */
134: SendMessage (hWndEdit, EM_LINESCROLL, 0,
135: SendMessage (hWndEdit, EM_LINEFROMCHAR, uBegSel, 0) -
136: SendMessage (hWndEdit, EM_GETFIRSTVISIBLELINE, 0, 0));
137:
138: /* Select the located string */
139: uEndSel = uBegSel + nStrLen;
140: SendMessage(hWndEdit, EM_SETSEL, uBegSel, uEndSel);
141:
142: /* return success */
143: return TRUE;
144: }
145:
146: nChars--;
147:
148: /* increment/decrement start position by 1 */
149: lpEditData += (wDir ? 1 : -1);
150: wDir ? uBegSel++ : uBegSel--;
151: }
152:
153: LocalUnlock (hEditData);
154: SendMessage (hWndEdit, EM_SETSEL, uOrgBegSel, uOrgEndSel);
155:
156: /* return failed search */
157: return FALSE;
158: }
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