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[idd] driver: CSettings minor refactor

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This commit is contained in:
Geoffrey McRae
2025-09-15 02:21:40 +10:00
parent 118e300f2f
commit 9ac3c945fe
2 changed files with 17 additions and 7 deletions
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23
idd/LGIdd/CSettings.cpp
View File

@@ -98,7 +98,7 @@ void CSettings::SetExtraMode(const DisplayMode& mode)
RegCloseKey(hKey);
}
bool CSettings::GetExtraMode(DisplayMode& mode)
std::wstring CSettings::ReadStringValue(const wchar_t* name, const wchar_t* default)
{
HKEY hKey = nullptr;
LONG ec = RegOpenKeyExW(
@@ -110,29 +110,38 @@ bool CSettings::GetExtraMode(DisplayMode& mode)
);
if (ec != ERROR_SUCCESS)
return false;
return std::wstring(default);
DWORD type = 0;
DWORD cb = 0;
ec = RegQueryValueExW(hKey, L"ExtraMode", nullptr, &type, nullptr, &cb);
ec = RegQueryValueExW(hKey, name, nullptr, &type, nullptr, &cb);
if (ec != ERROR_SUCCESS || (type != REG_SZ && type != REG_EXPAND_SZ) || cb == 0)
{
RegCloseKey(hKey);
return false;
return std::wstring(default);
}
std::vector<wchar_t> buf(cb / sizeof(wchar_t) + 1);
ec = RegQueryValueExW(hKey, L"ExtraMode", nullptr, &type,
ec = RegQueryValueExW(hKey, name, nullptr, &type,
reinterpret_cast<LPBYTE>(buf.data()), &cb);
RegCloseKey(hKey);
if (ec != ERROR_SUCCESS)
return false;
return std::wstring(default);
buf.back() = L'\0';
std::wstring s(buf.data());
return ParseModeString(s, mode);
return s;
}
bool CSettings::GetExtraMode(DisplayMode& mode)
{
std::wstring extraMode = ReadStringValue(L"ExtraMode", NULL);
if (extraMode.empty())
return false;
return ParseModeString(extraMode, mode);
}
bool CSettings::ReadModesValue(std::vector<std::wstring> &out) const

1
idd/LGIdd/CSettings.h
View File

@@ -24,6 +24,7 @@ class CSettings
private:
DisplayModes m_displayModes;
std::wstring ReadStringValue(const wchar_t* name, const wchar_t* default);
bool ReadModesValue(std::vector<std::wstring> &out) const;
bool ParseModeString(const std::wstring& in, DisplayMode& out);