From 73cc345f54b989aab39d05ad1b269a338771ab52 Mon Sep 17 00:00:00 2001
From: Vincent Zhang <73851560+bootsareme@users.noreply.github.com>
Date: Thu, 5 Mar 2026 23:54:30 -0500
Subject: Add a launch argument for full screen (#663)

* per user config should be .gitignored

* add comment surrounding gitignore update

* make it wildcard

* add fullscreen to launch option struct

* remove redundant forward declaration and use fullscreen launch option in main
---
 Minecraft.Client/Windows64/Windows64_Minecraft.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'Minecraft.Client/Windows64/Windows64_Minecraft.cpp')

diff --git a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
index 2eef5f73..1146b86d 100644
--- a/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
+++ b/Minecraft.Client/Windows64/Windows64_Minecraft.cpp
@@ -110,6 +110,7 @@ struct Win64LaunchOptions
 {
 	int screenMode;
 	bool serverMode;
+	bool fullscreen;
 };
 
 static void CopyWideArgToAnsi(LPCWSTR source, char* dest, size_t destSize)
@@ -256,6 +257,8 @@ static Win64LaunchOptions ParseLaunchOptions()
 					g_Win64MultiplayerPort = (int)port;
 			}
 		}
+		else if (_wcsicmp(argv[i], L"-fullscreen") == 0)
+			options.fullscreen = true;
 	}
 
 	LocalFree(argv);
@@ -1245,7 +1248,7 @@ int APIENTRY _tWinMain(_In_ HINSTANCE hInstance,
 	}
 
 	// Restore fullscreen state from previous session
-	if (LoadFullscreenOption() && !g_isFullscreen)
+	if (LoadFullscreenOption() && !g_isFullscreen || launchOptions.fullscreen)
 	{
 		ToggleFullscreen();
 	}
-- 
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