02/02: [SETUPAPI] SetupDiCallClassInstaller: Use the class GUID enclosed in curly brackets as a sub key name to retrieve the class co-installer.

[Eric Kohl]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=35bd6571bd423d2ac4b86…

commit 35bd6571bd423d2ac4b86e2db797bddcd98d05c5
Author:     Eric Kohl <eric.kohl(a)reactos.org>
AuthorDate: Sat May 12 12:42:56 2018 +0200
Commit:     Eric Kohl <eric.kohl(a)reactos.org>
CommitDate: Sat May 12 12:42:56 2018 +0200

    [SETUPAPI] SetupDiCallClassInstaller: Use the class GUID enclosed in curly brackets as
a sub key name to retrieve the class co-installer.
---
 dll/win32/setupapi/devinst.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/dll/win32/setupapi/devinst.c b/dll/win32/setupapi/devinst.c
index 1d83664bf2..2aaa4962e2 100644
--- a/dll/win32/setupapi/devinst.c
+++ b/dll/win32/setupapi/devinst.c
@@ -4288,16 +4288,16 @@ BOOL WINAPI SetupDiCallClassInstaller(
                     &hKey);
                 if (rc == ERROR_SUCCESS)
                 {
-                    LPWSTR lpGuidString;
-                    if (UuidToStringW((UUID*)&DeviceInfoData->ClassGuid,
&lpGuidString) == RPC_S_OK)
+                    WCHAR szGuidString[40];
+                    if (pSetupStringFromGuid(&DeviceInfoData->ClassGuid,
szGuidString, ARRAYSIZE(szGuidString)) == ERROR_SUCCESS)
                     {
-                        rc = RegQueryValueExW(hKey, lpGuidString, NULL, &dwRegType,
NULL, &dwLength);
+                        rc = RegQueryValueExW(hKey, szGuidString, NULL, &dwRegType,
NULL, &dwLength);
                         if (rc == ERROR_SUCCESS && dwRegType == REG_MULTI_SZ)
                         {
                             LPWSTR KeyBuffer = HeapAlloc(GetProcessHeap(), 0, dwLength);
                             if (KeyBuffer != NULL)
                             {
-                                rc = RegQueryValueExW(hKey, lpGuidString, NULL, NULL,
(LPBYTE)KeyBuffer, &dwLength);
+                                rc = RegQueryValueExW(hKey, szGuidString, NULL, NULL,
(LPBYTE)KeyBuffer, &dwLength);
                                 if (rc == ERROR_SUCCESS)
                                 {
                                     LPWSTR ptr;
@@ -4319,7 +4319,6 @@ BOOL WINAPI SetupDiCallClassInstaller(
                                 HeapFree(GetProcessHeap(), 0, KeyBuffer);
                             }
                         }
-                        RpcStringFreeW(&lpGuidString);
                     }
                     RegCloseKey(hKey);
                 }