CentOS Fortran如何进行图形界面开发 - 问答

在CentOS上进行Fortran图形界面开发，你可以选择多种图形库和工具。以下是一些流行的选择：

1. GTK+

GTK+是一个跨平台的图形用户界面库，支持C、C++、Python等多种语言，也有Fortran绑定。

安装GTK+和Fortran绑定

sudo yum install gtk3-devel
sudo yum install gfortran

示例代码

program gtk_example
    use gtk
    implicit none

    type(GtkWindow) :: window
    type(GtkButton) :: button

    call gtk_init()

    window = gtk_window_new(GTK_WINDOW_TOPLEVEL)
    call gtk_window_set_title(GTK_WINDOW(window), "GTK+ Fortran Example")
    call gtk_window_set_default_size(GTK_WINDOW(window), 200, 200)

    button = gtk_button_new_with_label("Click Me")

    call gtk_container_add(GTK_CONTAINER(window), button)

    call g_signal_connect(button, "clicked", G_CALLBACK(on_button_clicked), window)

    call gtk_widget_show_all(window)
    call gtk_main()

contains

    subroutine on_button_clicked(widget, data)
        type(GtkWidget), intent(in) :: widget
        type(GtkWindow), intent(inout) :: data

        print *, "Button clicked!"

        call gtk_main_quit()
    end subroutine on_button_clicked

end program gtk_example

2. Qt

Qt是一个功能强大的跨平台C++图形用户界面库，也有Fortran绑定。

安装Qt和Fortran绑定

sudo yum install qt5-qtbase-devel
sudo yum install gfortran

示例代码

program qt_example
    use Qt5Core
    use Qt5Widgets

    implicit none

    type(QApplication) :: app
    type(QWidget) :: window
    type(QPushButton) :: button

    call QApplication_initialize(app)

    window = QWidget()
    window%setWindowTitle("Qt Fortran Example")
    window%resize(200, 200)

    button = QPushButton("Click Me", window)
    button%setGeometry(50, 50, 100, 30)

    call button%clicked.connect(on_button_clicked)

    call window%show()

    call QApplication_exec(app)

contains

    subroutine on_button_clicked()
        print *, "Button clicked!"
    end subroutine on_button_clicked

end program qt_example

3. FLTK

FLTK（Fast Light Toolkit）是一个轻量级的跨平台图形用户界面库，支持C、C++、Python等多种语言，也有Fortran绑定。

安装FLTK和Fortran绑定

sudo yum install fltk-devel
sudo yum install gfortran

示例代码

program fltk_example
    use fltk

    implicit none

    type(Fl_Window) :: window
    type(Fl_Button) :: button

    call fl_initialize()

    window = Fl_Window(200, 200, "FLTK Fortran Example")
    button = Fl_Button(50, 50, 100, 30, "Click Me")

    call button%callback(on_button_clicked)

    call window%end()
    call window%show()

    call fl_run()

contains

    subroutine on_button_clicked(widget, data)
        type(Fl_Widget), intent(in) :: widget

        print *, "Button clicked!"
    end subroutine on_button_clicked

end program fltk_example

总结

选择哪种图形库取决于你的具体需求和偏好。GTK+和Qt功能强大且成熟，适合复杂的图形界面开发。FLTK则更适合轻量级的应用。无论选择哪种库，都需要安装相应的Fortran绑定，并编写相应的Fortran代码来创建和管理图形界面元素。

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