From 17fc299b74ed8eeda7dcb5bcd0fce068ab2200da Mon Sep 17 00:00:00 2001
From: tfo <tfo@live.no>
Date: Tue, 17 Feb 2026 22:14:55 +0100
Subject: [PATCH] win-dshow: Fix CreateFileW return value check in virtualcam
 filter

CreateFileW returns INVALID_HANDLE_VALUE on failure, not NULL.
The previous check would always evaluate to true on failure,
causing ReadFile and CloseHandle to be called on an invalid
handle.
---
 plugins/win-dshow/virtualcam-module/virtualcam-filter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plugins/win-dshow/virtualcam-module/virtualcam-filter.cpp b/plugins/win-dshow/virtualcam-module/virtualcam-filter.cpp
index 89702b357..7d96416b4 100644
--- a/plugins/win-dshow/virtualcam-module/virtualcam-filter.cpp
+++ b/plugins/win-dshow/virtualcam-module/virtualcam-filter.cpp
@@ -61,7 +61,7 @@ VCamFilter::VCamFilter() : OutputFilter()
 		StringCbCat(res_file, sizeof(res_file), L"\\obs-virtualcam.txt");
 
 		HANDLE file = CreateFileW(res_file, GENERIC_READ, 0, nullptr, OPEN_EXISTING, 0, nullptr);
-		if (file) {
+		if (file != INVALID_HANDLE_VALUE) {
 			char res[128];
 			DWORD len = 0;