From 574f54e32b90c1fdb3a89dd1f73817050f790ad4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Simon=20L=C3=BCbe=C3=9F?= <simon.luebess@gmail.com>
Date: Mon, 14 Feb 2022 20:35:35 +0100
Subject: [PATCH] Added Window.SetIcon

---
 GlitchyEngine/src/Platform/Windows/WindowsWindow.bf | 12 ++++++++++++
 GlitchyEngine/src/Window.bf                         |  5 +++++
 2 files changed, 17 insertions(+)

diff --git a/GlitchyEngine/src/Platform/Windows/WindowsWindow.bf b/GlitchyEngine/src/Platform/Windows/WindowsWindow.bf
index 4c358ee..ebf139f 100644
--- a/GlitchyEngine/src/Platform/Windows/WindowsWindow.bf
+++ b/GlitchyEngine/src/Platform/Windows/WindowsWindow.bf
@@ -250,6 +250,18 @@ namespace GlitchyEngine
 		[CLink]
 		static extern IntBool IsWindowUnicode(HWND whnd);
 
+		public Result<void> SetIcon(StringView filePath)
+		{
+			HICON hIcon = LoadImageW(0, filePath.ToScopedNativeWChar!(), .Icon, 0, 0, .LoadFromFile);
+			if (hIcon == 0)
+				return .Err;
+
+			// WM_SETICON 0x0080
+			SendMessageW(_windowHandle, 0x0080, 1 /* ICON_BIG */, (int)hIcon);
+
+			return .Ok;
+		}
+
 		private static LRESULT MessageHandler(HWND hwnd, uint32 uMsg, WPARAM wParam, LPARAM lParam)
 		{
 			void* windowPtr = (void*)GetWindowLongPtrW(hwnd, GWL_USERDATA);
diff --git a/GlitchyEngine/src/Window.bf b/GlitchyEngine/src/Window.bf
index c64c978..8263533 100644
--- a/GlitchyEngine/src/Window.bf
+++ b/GlitchyEngine/src/Window.bf
@@ -110,5 +110,10 @@ namespace GlitchyEngine
 		}
 
 		public extern void Update();
+
+		/**
+		 * Sets the Icon of the window to the given file.
+		 */
+		public extern Result<void> SetIcon(StringView filePath);
 	}
 }