setupx.dll16: add a DiOpenClassRegKey stub

[Austin English]

For https://bugs.winehq.org/show_bug.cgi?id=32361

-- 
-Austin
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diff --git a/dlls/setupx.dll16/devinst16.c b/dlls/setupx.dll16/devinst16.c
index fb98f42..55f38b0 100644
--- a/dlls/setupx.dll16/devinst16.c
+++ b/dlls/setupx.dll16/devinst16.c
@@ -133,3 +133,12 @@ RETERR16 WINAPI DiOpenDevRegKey16(LPDEVICE_INFO16 lpdi,
     FIXME("(%p %p %d): stub\n", lpdi, lphk, iFlags);
     return FALSE;
 }
+
+/***********************************************************************
+ *              DiOpenClassRegKey (SETUPX.319)
+ */
+RETERR16 WINAPI DiOpenClassRegKey16(LPHKEY16 hkey, const char *class)
+{
+    FIXME("(%p %s): stub\n", hkey, debugstr_a(class));
+    return ERR_DI_REG_API;
+}
diff --git a/dlls/setupx.dll16/setupx.dll16.spec b/dlls/setupx.dll16/setupx.dll16.spec
index e5bdf23..615e92f 100644
--- a/dlls/setupx.dll16/setupx.dll16.spec
+++ b/dlls/setupx.dll16/setupx.dll16.spec
@@ -155,7 +155,7 @@
 319  pascal -ret16 DiOpenDevRegKey (ptr ptr word) DiOpenDevRegKey16
 320  stub     DiInstallDrvSection #(str str str str long)
 321  pascal -ret16 DiInstallClass (str long) DiInstallClass16
-322  stub     DiOpenClassRegKey #(ptr str)
+322  pascal -ret16 DiOpenClassRegKey (ptr str) DiOpenClassRegKey16
 323  stub     Display_SetFontSize #(str)
 324  stub     Display_OpenFontSizeKey #(ptr)
 325  stub     DiBuildClassDrvListFromOldInf #(ptr str ptr long)
diff --git a/dlls/setupx.dll16/setupx16.h b/dlls/setupx.dll16/setupx16.h
index f348340..4358fb3 100644
--- a/dlls/setupx.dll16/setupx16.h
+++ b/dlls/setupx.dll16/setupx16.h
@@ -559,4 +559,29 @@ typedef struct tagLDD_LIST {
    ldd.ldid = LDID; \
   } while(0)
 
+/* Error codes */
+enum _ERR_DEVICE_INSTALL
+{
+	ERR_DI_INVALID_DEVICE_ID = DI_ERROR,
+	ERR_DI_INVALID_COMPATIBLE_DEVICE_LIST,
+	ERR_DI_REG_API,
+	ERR_DI_LOW_MEM,
+	ERR_DI_BAD_DEV_INFO,
+	ERR_DI_INVALID_CLASS_INSTALLER,
+	ERR_DI_DO_DEFAULT,
+	ERR_DI_USER_CANCEL,
+	ERR_DI_NOFILECOPY,
+	ERR_DI_BAD_CLASS_INFO,
+	ERR_DI_BAD_INF,
+	ERR_DI_BAD_MOVEDEV_PARAMS,
+	ERR_DI_NO_INF,
+	ERR_DI_BAD_PROPCHANGE_PARAMS,
+	ERR_DI_BAD_SELECTDEVICE_PARAMS,
+	ERR_DI_BAD_REMOVEDEVICE_PARAMS,
+	ERR_DI_BAD_ENABLECLASS_PARAMS,
+	ERR_DI_FAIL_QUERY,
+	ERR_DI_API_ERROR,
+	ERR_DI_BAD_PATH,
+};
+
 #endif /* __SETUPX16_H */