diff --git a/src/motif_test.c b/src/motif_test.c
index a93fd67..4236433 100644
--- a/src/motif_test.c
+++ b/src/motif_test.c
@@ -199,6 +199,19 @@ int main(int argc, char *argv[]) {
     XmMainWindowSetAreas(mainwin, menubar, NULL, NULL, NULL, form);
 
     XtRealizeWidget(toplevel);
-    XtAppMainLoop(app);
+
+    /* 自定义事件循环 */
+    XEvent event;
+    while (1) {
+        if (XtAppPending(app)) {
+            XtAppNextEvent(app, &event);
+            XtDispatchEvent(&event);
+        } else {
+            /* 空闲时可以执行后台逻辑 */
+            printf("Idle...\n");
+            usleep(500000); /* 0.5秒 */
+        }
+    }
+
     return 0;
 }