Function find_windows_kit_root

IDEHelper/VSSupport.cpp:253–278

}

wchar_t *find_windows_kit_root(HKEY key, wchar_t *version) {
	// Given a key to an already opened registry entry,
	// get the value stored under the 'version' subkey.
	// If that's not the right terminology, hey, I never do registry stuff.

	DWORD required_length;
	auto rc = RegQueryValueExW(key, version, NULL, NULL, NULL, &required_length);
	if (rc != 0)  return NULL;

	DWORD length = required_length + sizeof(wchar_t);  // The extra wchar_t is for the maybe optional zero later on. Probably we are over-allocating.
	wchar_t *value = (wchar_t *)malloc(length);
	if (!value) return NULL;

	rc = RegQueryValueExW(key, version, NULL, NULL, (LPBYTE)value, &length);  // We know that version is zero-terminated...
	if (rc != 0)  return NULL;
	length /= sizeof(wchar_t);

	// The documentation says that if the string for some reason was not stored
	// with zero-termination, we need to manually terminate it. Sigh!!

	if (value[length - 1]) {
		value[length] = 0;
	}

	return value;
}

void win10_best(wchar_t *short_name, wchar_t *full_name, Version_Data *data) {
	// Find the Windows 10 subdirectory with the highest version number.