cdrivelettercombo.cpp

PGP8.0源码 请认真阅读您的文件包然后写出其具体功能

/*____________________________________________________________________________
		Copyright (C) 2002 PGP Corporation
        All rights reserved.

        $Id: CDriveLetterCombo.cpp,v 1.5 2002/08/06 20:09:23 dallen Exp $
____________________________________________________________________________*/

#include "pgpClassesConfig.h"

#include "CPath.h"
#include "UString.h"

#include "CDriveLetterCombo.h"
#include "PGPdiskUIPriv.h"

_USING_PGP

// Class CDriveLetterCombo member functions

PGPUInt8 
CDriveLetterCombo::Get() const
{
	if (IsWindow())
		SetFromSel();

	return mDriveNum;
}

void 
CDriveLetterCombo::Fill()
{
	CString		driveString;
	PGPUInt32	drives	= CPath::GetFreeDrives();;

	ResetContent();

	// Fill the combo box with available drive letters.	
	for (PGPUInt32 i = 2; i < CPath::kMaxDrives; i++)
	{
		if (drives & (1 << i))
		{
			driveString.Format("%c:", UString::NumberToLetter(i));

			PGPInt32	index	= AddString(driveString);
			SetItemData(index, i);
		}
	}

	SetCurSel(0);
	SetFromSel();
}

void 
CDriveLetterCombo::Set(PGPUInt8 drive)
{
	PGPInt32	index	= FindDriveNumIndex(drive);

	if (index != -1)
	{
		SetCurSel(index);
		SetFromSel();
	}
}

PGPInt32 
CDriveLetterCombo::FindDriveNumIndex(PGPUInt8 driveNum)
{
	PGPInt32	i;
	PGPInt32	count	= GetCount();

	for (i = 0; i < count; i++)
	{
		if (GetItemData(i) == driveNum)
			return i;
	}

	return -1;
}

void 
CDriveLetterCombo::SetFromSel() const
{
	mDriveNum = static_cast<PGPUInt8>(GetItemData(GetCurSel()));
}

void 
CDriveLetterCombo::OnChar(char c, PGPUInt32 keyData)
{
	Set(UString::LetterToNumber(c));
}

void 
CDriveLetterCombo::OnDestroy()
{
	SetFromSel();
}