[Doc] Readme about multi-viewports

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

@@ -146,7 +146,9 @@ public final class ImGuiGlfwExample {
         final ImGuiIO io = ImGui.getIO();
 
         io.setIniFilename(null); // We don't want to save .ini file
-        io.addConfigFlags(ImGuiConfigFlags.NavEnableKeyboard | ImGuiConfigFlags.DockingEnable | ImGuiConfigFlags.ViewportsEnable);
+        io.addConfigFlags(ImGuiConfigFlags.NavEnableKeyboard);  // Enable Keyboard Controls
+        io.addConfigFlags(ImGuiConfigFlags.DockingEnable);      // Enable Docking
+        io.addConfigFlags(ImGuiConfigFlags.ViewportsEnable);    // Enable Multi-Viewport / Platform Windows
         io.setConfigViewportsNoTaskBarIcon(true);
 
         // ------------------------------------------------------------
@@ -189,7 +191,7 @@ public final class ImGuiGlfwExample {
         ImGuiFreeType.buildFontAtlas(fontAtlas, ImGuiFreeType.RasterizerFlags.LightHinting);
 
         // When viewports are enabled we tweak WindowRounding/WindowBg so platform windows can look identical to regular ones.
-        if ((io.getConfigFlags() & ImGuiConfigFlags.ViewportsEnable) != 0) {
+        if (io.hasConfigFlags(ImGuiConfigFlags.ViewportsEnable)) {
             final ImGuiStyle style = ImGui.getStyle();
             style.setWindowRounding(0.0f);
             style.setColor(ImGuiCol.WindowBg, ImGui.getColorU32(ImGuiCol.WindowBg, 1));
@@ -224,7 +226,7 @@ public final class ImGuiGlfwExample {
         // At that moment ImGui will be rendered to the current OpenGL context.
         imGuiGl3.renderDrawData(ImGui.getDrawData());
 
-        if ((ImGui.getIO().getConfigFlags() & ImGuiConfigFlags.ViewportsEnable) != 0) {
+        if (ImGui.getIO().hasConfigFlags(ImGuiConfigFlags.ViewportsEnable)) {
             final long backupWindowPtr = glfwGetCurrentContext();
             ImGui.updatePlatformWindows();
             ImGui.renderPlatformWindowsDefault();