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Tricks of the Windows Gam…ming Gurus (2nd Edition)
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Disc2.iso
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msdn_vcb
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samples
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vc98
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sdk
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sdktools
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porttool
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ptfind.c
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C/C++ Source or Header
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1995-10-28
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5KB
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200 lines
#include "PortTool.h"
/* global search string */
char lpszSearch[MAXSEARCHSTRING+1] = "";
HWND hDlgSearch;
FINDREPLACE frSearch;
/* compare two substrings */
BOOL WINAPI RealSlowCompare (WORD, char *, char *);
BOOL WINAPI RealSlowCompare (
WORD wCase,
char *lpszSubject,
char *lpszTarget)
{
if (wCase)
{
while (*lpszTarget)
if (*lpszTarget++ != *lpszSubject++)
return FALSE;
}
else
{
while (*lpszTarget) {
if (IsDBCSLeadByte(*lpszSubject) ||
IsDBCSLeadByte(*lpszTarget)) {
if (*lpszTarget++ != *lpszSubject++ ||
*lpszTarget++ != *lpszSubject++) {
return FALSE;
}
} else {
if ((CHAR)(DWORD)CharLower ((char *)(DWORD)(BYTE)*lpszTarget++)
!= (CHAR)(DWORD)CharLower ((char *)(DWORD)(BYTE)*lpszSubject++)) {
return FALSE;
}
}
}
}
return TRUE;
}
/* invoke the common search/replace dialog */
BOOL WINAPI FindDialog (
HWND hWnd,
WORD wCase,
WORD wDir,
char *lpszInit)
{
frSearch.lStructSize = sizeof (FINDREPLACE);
frSearch.hwndOwner = hWnd;
frSearch.hInstance = (HANDLE)GetWindowLong (hWnd, GWL_HINSTANCE);
frSearch.Flags = FR_HIDEWHOLEWORD;
/* if wCase, case sensitive */
if (wCase)
frSearch.Flags |= FR_MATCHCASE;
/* if wDir, search forward */
if (wDir)
frSearch.Flags |= FR_DOWN;
frSearch.lpstrFindWhat = lpszInit;
frSearch.lpstrReplaceWith = NULL;
frSearch.wFindWhatLen = MAXSEARCHSTRING+1;
frSearch.wReplaceWithLen = 0;
frSearch.lCustData = 0;
frSearch.lpfnHook = NULL;
frSearch.lpTemplateName = NULL;
/* call common search dialog */
if (hDlgSearch = FindText (&frSearch))
return TRUE;
else
return FALSE;
}
/* perform the actual text searching in the edit control data */
BOOL WINAPI LocateText (
HWND hWnd,
WORD wCase,
WORD wDir,
char *lpszStr)
{
UINT uBegSel, uEndSel, uOrgBegSel, uOrgEndSel;
HANDLE hEditData;
HWND hWndEdit = (HANDLE)GetWindowLong (hWnd, WL_HWNDEDIT);
char *lpEditData;
char *lpEditHead;
UINT uLen;
int nStrLen = strlen (lpszStr);
int nChars;
/* test for valid string */
if (!*lpszStr)
return FALSE;
/* locate beginning of selected text */
SendMessage (hWndEdit, EM_GETSEL, (UINT)&uBegSel, (UINT)&uEndSel);
uOrgBegSel = uBegSel;
uOrgEndSel = uEndSel;
/* get length of the text */
uLen = (UINT)SendMessage (hWndEdit, WM_GETTEXTLENGTH, 0, 0);
/* Get handle to edit text data and lock it */
#if !defined (WIN32)
hEditData = (HANDLE)SendMessage (hWndEdit, EM_GETHANDLE, 0, 0);
lpEditData = LocalLock (hEditData);
lpEditHead = lpEditData;
#else
hEditData = LocalAlloc (LHND, uLen);
lpEditData = LocalLock (hEditData);
lpEditHead = lpEditData;
GetWindowText (hWndEdit, lpEditData, uLen);
#endif
/* advance starting point past selection one char */
if (wDir) {
if (IsDBCSLeadByte(lpEditData[uBegSel])) {
uBegSel += 2;
} else {
uBegSel += 1;
}
} else {
if (IsDBCSLeadByte(*CharPrev(lpEditData, lpEditData + uBegSel))) {
uBegSel -= 2;
} else {
uBegSel -= 1;
}
}
lpEditData += uBegSel;
/* count characters to search (either forward to end of file or back to beginning) */
if (wDir)
nChars = (int)(uLen - uBegSel + 1 - nStrLen);
else
nChars = (int)uBegSel;
/* compare character by character for a substring match */
//DBCS_FIX
while ((wDir && nChars >= nStrLen) || (!wDir && nChars >= 0))
{
/* compare this substring for a match */
if (RealSlowCompare (wCase, lpEditData, lpszStr))
{
/* string found, cleanup and go away */
LocalUnlock(hEditData);
/* scroll parent edit control and select offending text */
SendMessage (hWndEdit, EM_LINESCROLL, 0,
SendMessage (hWndEdit, EM_LINEFROMCHAR, uBegSel, 0) -
SendMessage (hWndEdit, EM_GETFIRSTVISIBLELINE, 0, 0));
/* Select the located string */
uEndSel = uBegSel + nStrLen;
SendMessage(hWndEdit, EM_SETSEL, uBegSel, uEndSel);
/* return success */
return TRUE;
}
if (wDir) {
if (IsDBCSLeadByte(*lpEditData)) {
nChars -= 2;
lpEditData += 2;
uBegSel += 2;
} else {
nChars--;
lpEditData++;
uBegSel++;
}
} else {
lpEditData = CharPrev(lpEditHead, lpEditData);
if (IsDBCSLeadByte(*lpEditData)) {
nChars -= 2;
uBegSel -= 2;
} else {
nChars--;
uBegSel--;
}
}
}
LocalUnlock (hEditData);
SendMessage (hWndEdit, EM_SETSEL, uOrgBegSel, uOrgEndSel);
/* return failed search */
return FALSE;
}