Load DLLs independent of java.library.path

Author: manuelbl

integration-tests/windows-api-tests/pom.xml

@@ -146,6 +146,9 @@
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-surefire-plugin</artifactId>
           <version>${maven-surefire-plugin.version}</version>
+          <configuration>
+            <argLine>-Djava.library.path=C:/Users</argLine>
+          </configuration>
         </plugin>
       </plugins>
     </pluginManagement>

integration-tests/windows-api-tests/src/test/java/net/codecrete/windowsapi/tests/JavaLibraryPathTest.java

@@ -0,0 +1,12 @@
+package net.codecrete.windowsapi.tests;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+class JavaLibraryPathTest {
+    @Test
+    void javaLibraryPath_isOverridden() {
+        assertThat(System.getProperty("java.library.path")).isEqualTo("C:/Users");
+    }
+}

windowsapi-code-generator/src/main/java/net/codecrete/windowsapi/writer/FunctionCodeWriter.java

@@ -60,15 +60,18 @@ public class Apis {
                 
                 """);
 
-        writer.println("    static {");
+        writer.print("""
+                static {
+                    var libraryPath = System.getenv("WINDIR") + "\\\\SYSTEM32\\\\";
+            """);
         functions.stream().map(Method::dll).filter(Objects::nonNull).distinct().sorted().forEach(dll ->
                 writer.printf("""
-                                System.loadLibrary("%s");
-                        """, dllName(dll)));
+                            System.load(libraryPath + "%s.dll");
+                    """, dllName(dll)));
         writer.print("""
-                    }
-                
-                """);
+                }
+            
+            """);
 
         boolean usesLastError = anyFunctionUsesLastError(functions);