Add shortcut methods to add/remove config/backend flags

imgui-binding/src/main/java/imgui/ImGuiIO.java

@@ -38,6 +38,20 @@ public final class ImGuiIO {
         ImGui::GetIO().ConfigFlags = configFlags;
     */
 
+    /**
+     * See ImGuiConfigFlags enum. Set by user/application. Gamepad/keyboard navigation options, etc.
+     */
+    public void addConfigFlags(int configFlags) {
+        setConfigFlags(getConfigFlags() | configFlags);
+    }
+
+    /**
+     * See ImGuiConfigFlags enum. Set by user/application. Gamepad/keyboard navigation options, etc.
+     */
+    public void removeConfigFlags(int configFlags) {
+        setConfigFlags(getConfigFlags() & ~(configFlags));
+    }
+
     /**
      * See ImGuiBackendFlags enum. Set by back-end to communicate features supported by the back-end.
      */
@@ -52,6 +66,19 @@ public final class ImGuiIO {
         ImGui::GetIO().BackendFlags = backendFlags;
     */
 
+    /**
+     * See ImGuiBackendFlags enum. Set by back-end to communicate features supported by the back-end.
+     */
+    public void addBackendFlags(int backendFlags) {
+        setBackendFlags(getBackendFlags() | backendFlags);
+    }
+
+    /**
+     * See ImGuiBackendFlags enum. Set by back-end to communicate features supported by the back-end.
+     */
+    public void removeBackendFlags(int backendFlags) {
+        setBackendFlags(getBackendFlags() & ~(backendFlags));
+    }
 
     /**
      * Minimum time between saving positions/sizes to .ini file, in seconds.

imgui-lwjgl3/src/main/java/imgui/glfw/ImGuiImplGlfw.java

@@ -193,7 +193,7 @@ public class ImGuiImplGlfw {
 
         final ImGuiIO io = ImGui.getIO();
 
-        io.setBackendFlags(ImGuiBackendFlags.HasMouseCursors | ImGuiBackendFlags.HasSetMousePos);
+        io.addBackendFlags(ImGuiBackendFlags.HasMouseCursors | ImGuiBackendFlags.HasSetMousePos);
         io.setBackendPlatformName("imgui_java_impl_glfw");
 
         // Keyboard mapping. ImGui will use those indices to peek into the io.KeysDown[] array.

imgui-lwjgl3/src/test/java/ImGuiGlfwExample.java

@@ -167,7 +167,7 @@ public final class ImGuiGlfwExample {
         final ImGuiIO io = ImGui.getIO();
 
         io.setIniFilename(null); // We don't want to save .ini file
-        io.setConfigFlags(ImGuiConfigFlags.NavEnableKeyboard | ImGuiConfigFlags.DockingEnable); // Navigation with keyboard and enabled docking
+        io.addConfigFlags(ImGuiConfigFlags.NavEnableKeyboard | ImGuiConfigFlags.DockingEnable); // Navigation with keyboard and enabled docking
 
         // ------------------------------------------------------------
         // Fonts configuration