combo.c

加密硬盘、分区、虚拟盘的程序源码

/* Copyright (C) 2004 TrueCrypt Team, truecrypt.org
   This product uses components written by Paul Le Roux <[e-mail]> */

#include "TCdefs.h"
#include "combo.h"

#include <time.h>

#define SIZEOF_MRU_LIST 8

void
AddComboItem (HWND hComboBox, char *lpszFileName)
{
	LPARAM nIndex;

	nIndex = SendMessage (hComboBox, CB_FINDSTRINGEXACT, (WPARAM) - 1,
			      (LPARAM) & lpszFileName[0]);

	if (nIndex == CB_ERR && *lpszFileName)
	{
		long lTime = time (NULL);
		nIndex = SendMessage (hComboBox, CB_ADDSTRING, 0, (LPARAM) & lpszFileName[0]);
		if (nIndex != CB_ERR)
			SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (LPARAM) lTime);
	}

	if (nIndex != CB_ERR && *lpszFileName)
		nIndex = SendMessage (hComboBox, CB_SETCURSEL, nIndex, 0);

	if (*lpszFileName == 0)
	{
		SendMessage (hComboBox, CB_SETCURSEL, (WPARAM) - 1, 0);
	}
}


LPARAM
MoveEditToCombo (HWND hComboBox)
{
	char szTmp[256] =
	{0};

	GetWindowText (hComboBox, szTmp, sizeof (szTmp));

	if (strlen (szTmp) > 0)
	{
		LPARAM nIndex = SendMessage (hComboBox, CB_FINDSTRINGEXACT, (WPARAM) - 1,
					     (LPARAM) & szTmp[0]);
		if (nIndex == CB_ERR)
		{
			long lTime = time (NULL);
			nIndex = SendMessage (hComboBox, CB_ADDSTRING, 0, (LPARAM) & szTmp[0]);
			if (nIndex != CB_ERR)
				SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (DWORD) lTime);
		}
		else
		{
			long lTime = time (NULL);
			SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (DWORD) lTime);
		}

		return nIndex;
	}

	return SendMessage (hComboBox, CB_GETCURSEL, 0, 0);
}

int
GetOrderComboIdx (HWND hComboBox, int *nIdxList, int nElems)
{
	int x = (int) SendMessage (hComboBox, CB_GETCOUNT, 0, 0);
	if (x != CB_ERR)
	{
		int i, nHighIdx = CB_ERR;
		long lHighTime = -1;

		for (i = 0; i < x; i++)
		{
			long lTime = SendMessage (hComboBox, CB_GETITEMDATA, (WPARAM) i, 0);
			if (lTime > lHighTime)
			{
				int n;
				for (n = 0; n < nElems; n++)
					if (nIdxList[n] == i)
						break;
				if (n == nElems)
				{
					lHighTime = lTime;
					nHighIdx = i;
				}
			}
		}

		return nHighIdx;
	}

	return CB_ERR;
}

LPARAM
UpdateComboOrder (HWND hComboBox)
{
	LPARAM nIndex;

	nIndex = SendMessage (hComboBox, CB_GETCURSEL, 0, 0);

	if (nIndex != CB_ERR)
	{
		long lTime = time (NULL);
		nIndex = SendMessage (hComboBox, CB_SETITEMDATA, (WPARAM) nIndex,
				      (LPARAM) lTime);
	}

	return nIndex;
}

void
LoadCombo (HWND hComboBox, char *lpszKey)
{
	int i;

	for (i = 0; i < SIZEOF_MRU_LIST; i++)
	{
		char szTmp[256], szKey[32], szTmp2[32];

		*szTmp = 0;

		sprintf (szTmp2, "%s%s", lpszKey, "%d");
		sprintf (szKey, szTmp2, i);
		ReadRegistryString (szKey, "", szTmp, sizeof (szTmp));

		AddComboItem (hComboBox, szTmp);
	}

	SendMessage (hComboBox, CB_SETCURSEL, 0, 0);

}

void
DumpCombo (HWND hComboBox, char *lpszKey, int bClear)
{
	int i, nComboIdx[SIZEOF_MRU_LIST];

	/* combo list part:- get mru items */
	for (i = 0; i < SIZEOF_MRU_LIST; i++)
		nComboIdx[i] = bClear ? CB_ERR : GetOrderComboIdx (hComboBox, &nComboIdx[0], i);

	/* combo list part:- write out mru items */
	for (i = 0; i < SIZEOF_MRU_LIST; i++)
	{
		char szTmp[256], szKey[32], szTmp2[32];

		*szTmp = 0;

		if (nComboIdx[i] != CB_ERR)
			SendMessage (hComboBox, CB_GETLBTEXT, nComboIdx[i], (LPARAM) & szTmp[0]);

		sprintf (szTmp2, "%s%s", lpszKey, "%d");
		sprintf (szKey, szTmp2, i);

		WriteRegistryString (szKey, szTmp);
	}
}

void
ClearCombo (HWND hComboBox)
{
	int i;
	for (i = 0; i < SIZEOF_MRU_LIST; i++)
	{
		SendMessage (hComboBox, CB_DELETESTRING, 0, 0);
	}
}

int
IsComboEmpty (HWND hComboBox)
{
	return SendMessage (hComboBox, CB_GETCOUNT, 0, 0) < 1;
}