From 0e25012ba5a3d48094abedec66c791cdc68c18c4 Mon Sep 17 00:00:00 2001
From: Angel Wang <angel@angelcube.dev>
Date: Mon, 22 Jun 2026 21:15:15 -0600
Subject: [PATCH] fix: pull correct user32 method

also docs
---
 src/apply/index.ts | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/src/apply/index.ts b/src/apply/index.ts
index 76bdf4c..67e6cc1 100644
--- a/src/apply/index.ts
+++ b/src/apply/index.ts
@@ -88,16 +88,20 @@ if (Deno.build.os != "windows") {
 	await $`eval ${config.applyWallpaperCommand.replace("%s", targetImage.path)}`
 } else {
 	// C# in TypeScript. who would've thought
+	// uiAction: SPI_SetDeskWallpaper = 0x0014 = 20
+	// uiParam: unused = 0
+	// pvParam: path to the image
+	// fWinIni: SPIF_SENDCHANGE (update user profile + broadcast setting change) = 0x02 = 2
 	const command = `
 		$code = @' 
 		using System.Runtime.InteropServices; 
 			namespace Win32 { 
 				public class Wallpaper { 
 					[DllImport("user32.dll", CharSet=CharSet.Auto)] 
-					static extern int SystemParametersInfo (int uAction, int uParam, string lpvParam, int fuWinIni);
+					static extern int SystemParametersInfoA(int uiAction, int uiParam, string pvParam, int fWinIni);
 					
 					public static void SetWallpaper(string imagePath){ 
-						SystemParametersInfo(20, 0, imagePath, 3); 
+						SystemParametersInfo(20, 0, imagePath, 2);
 					}
 				}
 			}
-- 
2.51.2