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asio: fix XP build; remove call to RegGetValueA (#788)

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## Link to GitHub Issue or related Pull Request, if one exists
Fixes #787 

## Description of change
Remove the call to `RegGetValueA` as it is Vista and up. Replace with
`RegOpenKeyExA` + `RegQueryValueExA`

## Testing
This commit is contained in:
bicarus
2026-07-10 00:26:03 -07:00
committed by GitHub
parent 829503568e
commit 8d42c0ce77
1 changed files with 19 additions and 9 deletions
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src/spice2x/hooks/audio/asio_driver_scan.cpp
+19 -9
View File
@@ -32,18 +32,28 @@ namespace hooks::audio {
RegEnumKeyA(hkEnum, index, key_name, sizeof(key_name)) == ERROR_SUCCESS;
index++) {
// read description (display name), fall back to the key name
// read description (display name), fall back to the key name.
// RegOpenKeyExA + RegQueryValueExA is used instead of RegGetValueA
// because the latter is unavailable on Windows XP.
char desc[256] = { 0 };
DWORD size = sizeof(desc);
std::string name = key_name;
if (RegGetValueA(hkEnum,
key_name,
ASIO_REG_DESC,
RRF_RT_REG_SZ | wow64_flag,
nullptr,
desc,
&size) == ERROR_SUCCESS && desc[0]) {
name = desc;
HKEY hkDriver = nullptr;
if (RegOpenKeyExA(hkEnum, key_name, 0,
KEY_QUERY_VALUE | wow64_flag, &hkDriver) == ERROR_SUCCESS) {
DWORD type = 0;
if (RegQueryValueExA(hkDriver,
ASIO_REG_DESC,
nullptr,
&type,
reinterpret_cast<LPBYTE>(desc),
&size) == ERROR_SUCCESS
&& type == REG_SZ && desc[0]) {
// ensure null termination
desc[sizeof(desc) - 1] = '\0';
name = desc;
}
RegCloseKey(hkDriver);
}
// merge with an existing entry from the other view (match by name)