From 47a1122f04544ee60850ffea998ffd85520e06b8 Mon Sep 17 00:00:00 2001
From: Karl Tauber <karl@jformdesigner.com>
Date: Tue, 7 Dec 2021 00:39:28 +0100
Subject: [PATCH] Window decorations: do not exit application with
 `UnsatisfiedLinkError` in case that FlatLaf DLL cannot be executed because of
 restrictions on temporary directory (issue #436)

---
 CHANGELOG.md                                      |  6 +++++-
 .../flatlaf/ui/FlatWindowsNativeWindowBorder.java | 15 +++++++++++----
 2 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index b35cfd52..8c51ce27 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,7 +5,7 @@ FlatLaf Change Log
 
 #### Fixed bugs
 
-- Linux: Fixed font problems when running on Oracle Java 8 (OpenJDK 8 is not
+- Linux: Fixed font problems when running on Oracle Java (OpenJDK is not
   affected):
   - oversized text if system font is "Inter" (issue #427)
   - missing text if system font is "Cantarell" (on Fedora)
@@ -14,6 +14,10 @@ FlatLaf Change Log
   on AWT thread. (issue #432)
 - macOS: Fixed `NullPointerException` when using AWT component
   `java.awt.Choice`. (issue #439)
+- Native window decorations: Do not exit application with `UnsatisfiedLinkError`
+  in case that FlatLaf DLL cannot be executed because of restrictions on
+  temporary directory. Instead, continue with default window decorations. (issue
+  #436)
 
 ## 1.6.4
 
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowsNativeWindowBorder.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowsNativeWindowBorder.java
index 311e46c3..5af5b1ed 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowsNativeWindowBorder.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/ui/FlatWindowsNativeWindowBorder.java
@@ -163,11 +163,18 @@ class FlatWindowsNativeWindowBorder
 			return;
 
 		// install
-		WndProc wndProc = new WndProc( window );
-		if( wndProc.hwnd == 0 )
-			return;
+		try {
+			WndProc wndProc = new WndProc( window );
+			if( wndProc.hwnd == 0 )
+				return;
 
-		windowsMap.put( window, wndProc );
+			windowsMap.put( window, wndProc );
+		} catch( UnsatisfiedLinkError ex ) {
+			// catch for the case that the operating system prevents execution of DLL
+			// (e.g. if DLLs in temp folder are restricted)
+			// --> continue application without custom decorations
+			LoggingFacade.INSTANCE.logSevere( null, ex );
+		}
 	}
 
 	private void uninstall( Window window ) {