bool MyGetLogicalDriveStrings(CSysStringVector &driveStrings)
{
driveStrings.Clear();
UINT32 size = GetLogicalDriveStrings(0, NULL);
if (size == 0)
return false;
CSysString buffer;
UINT32 newSize = GetLogicalDriveStrings(size, buffer.GetBuffer(size));
if (newSize == 0)
return false;
if (newSize > size)
return false;
CSysString string;
for (UINT32 i = 0; i < newSize; i++)
{
TCHAR c = buffer[i];
if (c == TEXT('\0'))
{
driveStrings.Add(string);
string.Empty();
}
else
string += c;
}
if (!string.IsEmpty())
return false;
return true;
}
LRESULT CComboBox::GetLBText(int index, CSysString &s)
{
s.Empty();
LRESULT len = GetLBTextLen(index);
if (len == CB_ERR)
return len;
len = GetLBText(index, s.GetBuffer((int)len + 1));
s.ReleaseBuffer();
return len;
}
bool MyGetVolumeInformation(
LPCTSTR rootPathName,
CSysString &volumeName,
LPDWORD volumeSerialNumber,
LPDWORD maximumComponentLength,
LPDWORD fileSystemFlags,
CSysString &fileSystemName)
{
bool result = BOOLToBool(GetVolumeInformation(
rootPathName,
volumeName.GetBuffer(MAX_PATH), MAX_PATH,
volumeSerialNumber,
maximumComponentLength,
fileSystemFlags,
fileSystemName.GetBuffer(MAX_PATH), MAX_PATH));
volumeName.ReleaseBuffer();
fileSystemName.ReleaseBuffer();
return result;
}
LONG CKey::QueryValue(LPCTSTR name, CSysString &value)
{
value.Empty();
DWORD type = 0;
UInt32 currentSize = 0;
LONG res = RegQueryValueEx(_object, (LPTSTR)name, NULL, &type, NULL, (DWORD *)¤tSize);
if (res != ERROR_SUCCESS && res != ERROR_MORE_DATA)
return res;
res = QueryValue(name, value.GetBuffer(currentSize), currentSize);
value.ReleaseBuffer();
return res;
}
bool MyGetDateFormat(LCID locale, DWORD flags, CONST SYSTEMTIME *time,
LPCTSTR format, CSysString &resultString)
{
resultString.Empty();
int numChars = ::GetDateFormat(locale, flags, time, format, NULL, 0);
if(numChars == 0)
return false;
numChars = ::GetDateFormat(locale, flags, time, format,
resultString.GetBuffer(numChars), numChars + 1);
resultString.ReleaseBuffer();
return (numChars != 0);
}
bool CWindow::GetText(CSysString &s)
{
s.Empty();
int length = GetTextLength();
if (length == 0)
return (::GetLastError() == ERROR_SUCCESS);
length = GetText(s.GetBuffer(length), length + 1);
s.ReleaseBuffer();
if (length == 0)
return (::GetLastError() != ERROR_SUCCESS);
return true;
}
CSysString MyLoadString(HINSTANCE hInstance, UINT resourceID)
{
CSysString s;
int size = 256;
int len;
do
{
size += 256;
len = ::LoadString(hInstance, resourceID, s.GetBuffer(size - 1), size);
}
while (size - len <= 1);
s.ReleaseBuffer();
return s;
}
bool BrowseForFolder(HWND owner, LPCTSTR title, UINT ulFlags,
LPCTSTR initialFolder, CSysString &resultPath)
{
CSysString displayName;
BROWSEINFO browseInfo;
browseInfo.hwndOwner = owner;
browseInfo.pidlRoot = NULL;
browseInfo.pszDisplayName = displayName.GetBuffer(MAX_PATH);
browseInfo.lpszTitle = title;
browseInfo.ulFlags = ulFlags;
browseInfo.lpfn = (initialFolder != NULL) ? BrowseCallbackProc : NULL;
browseInfo.lParam = (LPARAM)initialFolder;
return BrowseForFolder(&browseInfo, resultPath);
}
LONG CKey::EnumKeys(CSysStringVector &keyNames)
{
keyNames.Clear();
CSysString keyName;
for (UInt32 index = 0; ; index++)
{
const UInt32 kBufferSize = MAX_PATH + 1; // 256 in ATL
FILETIME lastWriteTime;
UInt32 nameSize = kBufferSize;
LONG result = ::RegEnumKeyEx(_object, index, keyName.GetBuffer(kBufferSize),
(DWORD *)&nameSize, NULL, NULL, NULL, &lastWriteTime);
keyName.ReleaseBuffer();
if (result == ERROR_NO_MORE_ITEMS)
break;
if (result != ERROR_SUCCESS)
return result;
keyNames.Add(keyName);
}
return ERROR_SUCCESS;
}
bool GetPathFromIDList(LPCITEMIDLIST itemIDList, CSysString &path)
{
bool result = BOOLToBool(::SHGetPathFromIDList(itemIDList, path.GetBuffer(MAX_PATH * 2)));
path.ReleaseBuffer();
return result;
}