startup_

#define startup_

(

main_method

)

#include <xtd.core/include/xtd/startup.h>

Defines the entry point to be called when the application loads. Generally this is set either to the main form in your application or to the main procedure that should run when the application starts.

Namespace

xtd

Library

xtd.core

Parameters

main_method

The main method.

Examples

This example show a main method without arguments and without return code

#include <xtd/console>
#include <xtd/environment>
#include <xtd/startup>
 
using namespace xtd;
 
namespace main1_example {
  class program {
  public:
    static void main() {
      // Write arguments to the console output
      for (auto arg : environment::get_command_line_args())
        console::write_line(arg);
        
      // return 42
      environment::exit_code(42);
    }
  };
}
 
startup_(main1_example::program::main);
// Is the same as :
//
// auto main() -> int {
//   return startup::safe_run(main1_example::program::main);
// }
 
 
// This code produces the following output if one two "three four" five are entered on command line:
//
// /!---OMITTED---!/main1
// one
// two
// three four
// five

This example show a main method with a return code and without arguments

#include <xtd/console>
#include <xtd/environment>
#include <xtd/startup>
 
using namespace xtd;
 
namespace main2_example {
  class program {
  public:
    static int main() {
      // Write arguments to the console output
      for (auto arg : environment::get_command_line_args())
        console::write_line(arg);
        
      return 42;
    }
  };
}
 
startup_(main2_example::program::main);
// Is the same as :
//
// auto main() -> int {
//   return startup::safe_run(main2_example::program::main);
// }
 
 
// This code produces the following output if one two "three four" five are entered on command line:
//
// /!---OMITTED---!/main2
// one
// two
// three four
// five

This example show a main method with argument and without return code

#include <xtd/console>
#include <xtd/environment>
#include <xtd/startup>
 
using namespace xtd;
using namespace xtd::collections::specialized;
 
namespace main3_example {
  class program {
  public:
    static void main(const string_collection& args) {
      // Write arguments to the console output
      for (auto arg : args)
        console::write_line(arg);
        
      // return 42
      environment::exit_code(42);
    }
  };
}
 
startup_(main3_example::program::main);
// Is the same as :
//
// auto main() -> int {
//   return startup::safe_run(main3_example::program::main);
// }
 
 
// This code produces the following output if one two "three four" five are entered on command line:
//
// one
// two
// three four
// five

This example show a main method with argument and return code

#include <xtd/console>
#include <xtd/environment>
#include <xtd/startup>
 
using namespace xtd;
using namespace xtd::collections::specialized;
 
namespace main4_example {
  class program {
  public:
    static int main(const string_collection& args) {
      // Write arguments to the console output
      for (auto arg : args)
        console::write_line(arg);
        
      return 42;
    }
  };
}
 
startup_(main4_example::program::main);
// Is the same as :
//
// auto main() -> int {
//   return startup::safe_run(main4_example::program::main);
// }
 
 
// This code produces the following output if one two "three four" five are entered on command line:
//
// one
// two
// three four
// five

Examples

application_and_assert.cpp, application_and_exception.cpp, application_enable_dark_mode.cpp, application_enable_light_mode.cpp, application_with_cmake_assembly_info.cpp, application_with_manual_assembly_info.cpp, auto_reset_event.cpp, background_worker.cpp, barrier.cpp, barrier_simple.cpp, binary_reader.cpp, binary_reader2.cpp, binary_reader3.cpp, bit_converter_endianness.cpp, bit_converter_is_big_endian.cpp, bit_converter_is_little_endian.cpp, bit_converter_round_trips.cpp, border_style.cpp, calculator.cpp, change_parent.cpp, circular_form.cpp, console_clear.cpp, console_firework.cpp, countdown_event.cpp, countries.cpp, date_time.cpp, date_time_add.cpp, date_time_add_days.cpp, date_time_add_hours.cpp, date_time_add_milliseconds.cpp, date_time_add_minutes.cpp, date_time_add_months.cpp, date_time_add_seconds.cpp, date_time_add_years.cpp, date_time_date.cpp, date_time_day_of_week.cpp, date_time_day_of_year.cpp, date_time_days_in_month.cpp, date_time_days_in_month2.cpp, date_time_max_value.cpp, date_time_min_value.cpp, date_time_now.cpp, date_time_now2.cpp, date_time_specify_kind.cpp, date_time_sprintf.cpp, date_time_subtract.cpp, date_time_ticks.cpp, date_time_ticks2.cpp, date_time_time_of_day.cpp, date_time_to_string_format.cpp, date_time_today.cpp, debug_message_box.cpp, default_trace_listener.cpp, drive_info.cpp, environment_cancel_signal.cpp, environment_exit.cpp, environment_exit_code.cpp, environment_program_exit.cpp, event_wait_handle.cpp, file_info.cpp, file_info_append_text.cpp, file_info_move_to.cpp, file_info_open.cpp, file_info_open_read.cpp, file_info_open_text.cpp, file_info_open_write.cpp, file_info_replace.cpp, form_and_main.cpp, form_background_image.cpp, form_show.cpp, graph_control.cpp, horizontal_layout_panel.cpp, interlocked.cpp, interlocked_decrement.cpp, ip_address.cpp, lcd_label3.cpp, lock.cpp, lock_guard.cpp, lock_guard_keyword.cpp, main.cpp, main1.cpp, main2.cpp, main3.cpp, main4.cpp, manual_reset_event.cpp, math.cpp, mixing_std_and_xtd_threads.cpp, monitor.cpp, monitor_lock.cpp, monitor_pulse.cpp, monitor_pulse_all.cpp, mutex.cpp, semaphore.cpp, send_message_to_form.cpp, some_controls.cpp, some_system_controls.cpp, stack_trace.cpp, system_sound.cpp, system_sounds.cpp, target_default_namespace.cpp, test_console.cpp, test_forms.cpp, themes.cpp, thread.cpp, thread_pool.cpp, time_span.cpp, timeout.cpp, timer.cpp, timers_timer.cpp, timers_timer_synchronizing_object.cpp, trace_message_box.cpp, track_bar2.cpp, tutorial_application_icon.cpp, tutorial_button.cpp, tutorial_communicate.cpp, tutorial_simple_application.cpp, uri.cpp, version.cpp, version_os.cpp, vertical_layout_panel.cpp, and wait_handle.cpp.