如何用cl编译器编译Windows Gtk3 C程序时隐藏控制台窗口

问题场景 #

Windows 11（x86_64）环境下，因mingw/MSYS2表现不稳定，改用Visual Studio自带的原生cl编译器编译C语言编写的Gtk3程序（依赖gvsbuild脚本构建的Gtk3库）。程序通过编译器响应文件配置编译链接选项后可成功编译，但运行时会弹出后台控制台窗口。

尝试过的无效方案 #

• 链接时指定/SUBSYSTEM:WINDOWS，编译器报错找不到被Gtk隐藏的WinMain入口
• 尝试/D"subsystem,windows"、/Dmwindows、/Dsubsystem=gui等预定义宏，无法消除控制台窗口
• 添加Windows API代码尝试隐藏控制台，编译器找不到相关代码定义

原始测试代码 #

#include <gtk/gtk.h>

static void activate (GtkApplication * app, gpointer user_data)
{
  GtkWidget * window;

  window = gtk_application_window_new (app);
  gtk_window_set_title (GTK_WINDOW (window), "Hello internet from Gtk Windows!");
  gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
  gtk_widget_show_all (window);
}

int main (int argc, char ** argv)
{
  GtkApplication * app;
  int status;

  app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
  g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
  status = g_application_run (G_APPLICATION (app), argc, argv);
  g_object_unref (app);

  return status;
}

解决方法 #

通过以下修改即可解决问题：

1. 链接选项中指定/SUBSYSTEM:WINDOWS
2. 修改程序入口为WinMain，并做跨平台兼容处理
3. 调用g_application_run时将argc参数设为0（若程序无需处理命令行参数则无影响）

修改后的代码如下：

#include <gtk/gtk.h>

static void activate (GtkApplication * app, gpointer user_data)
{
  GtkWidget * window;

  window = gtk_application_window_new (app);
  gtk_window_set_title (GTK_WINDOW (window), "Hello internet from Gtk Windows!");
  gtk_window_set_default_size (GTK_WINDOW (window), 200, 200);
  gtk_widget_show_all (window);
}

#ifdef _WIN32
int WinMain (void * hInstance, void * hPrevInstance, char ** argv, int nCmdShow)
#else
int main (int argc, char ** argv)
#endif
{
  GtkApplication * app;
  int status;

  app = gtk_application_new ("org.gtk.example", G_APPLICATION_FLAGS_NONE);
  g_signal_connect (app, "activate", G_CALLBACK (activate), NULL);
  status = g_application_run (G_APPLICATION (app), 0, argv);
  g_object_unref (app);

  return status;
}

内容的提问来源于stack exchange，提问作者Will B