Remove run_example_app_c and update example usage

Deleted run_example_app_c.cpp and run_example_app_c.h, removing the native_run_example_app function. Updated tray_icon_c_example and window_c_example to use native_application_run and native_run_app directly. Cleaned up includes in nativeapi.h and example files to reflect these changes.

Author: lijy91

examples/tray_icon_c_example/main.c

@@ -9,8 +9,8 @@
 #endif
 
 // Include individual C API headers instead of the full nativeapi.h
+#include "../../src/capi/application_c.h"
 #include "../../src/capi/menu_c.h"
-#include "../../src/capi/run_example_app_c.h"
 #include "../../src/capi/string_utils_c.h"
 #include "../../src/capi/tray_icon_c.h"
 #include "../../src/capi/tray_manager_c.h"
@@ -230,7 +230,9 @@ int main() {
   printf("      because we set NATIVE_CONTEXT_MENU_TRIGGER_RIGHT_CLICKED.\n");
   printf("\nRunning... (Press Ctrl+C to force quit)\n");
 
-  int exit_code = native_run_example_app();
+  // Run the application event loop
+  native_application_t app = native_application_get_instance();
+  int exit_code = native_application_run(app);
 
-  return 0;
+  return exit_code;
 }

examples/window_c_example/main.c

@@ -4,9 +4,9 @@
 
 // Include C API headers
 #include "../../src/capi/accessibility_manager_c.h"
+#include "../../src/capi/application_c.h"
 #include "../../src/capi/image_c.h"
 #include "../../src/capi/menu_c.h"
-#include "../../src/capi/run_example_app_c.h"
 #include "../../src/capi/string_utils_c.h"
 #include "../../src/capi/tray_icon_c.h"
 #include "../../src/capi/tray_manager_c.h"
@@ -396,8 +396,8 @@ int main() {
     fprintf(stderr, "Failed to create tray.\n");
   }
 
-  // Run the example app
-  int result = native_run_example_app();
+  // Run the application with the window
+  int result = native_run_app(g_window);
 
   // Cleanup
   if (g_context_menu) {

include/nativeapi.h

@@ -40,7 +40,6 @@
 #include "../src/capi/menu_c.h"
 #include "../src/capi/message_dialog_c.h"
 #include "../src/capi/preferences_c.h"
-#include "../src/capi/run_example_app_c.h"
 #include "../src/capi/secure_storage_c.h"
 #include "../src/capi/string_utils_c.h"
 #include "../src/capi/tray_icon_c.h"