GTK进度条高度

Gtk Progress bar height

本文关键字：高度 GTK      更新时间：2023-10-16

我正在开发C 中的GTK应用程序。(GTK 3.0(。我的问题是我无法更改进度键的高度！(https://developer.gnome.org/gtk3/stable/gtkprogressbar.html(

下图将显示我的需求。总的来说，我想在我的代码中设置进度栏的高度。

我正在使用以下命令来编译我的示例：

gcc progress.cpp `pkg-config --cflags gtk+-3.0` `pkg-config --libs gtk+-3.0

这是我的代码的示例：

#include <gtk/gtk.h>
static gboolean
fill (gpointer   user_data)
{
  GtkWidget *progress_bar = user_data;
  /*Get the current progress*/
  gdouble fraction;
  fraction = gtk_progress_bar_get_fraction (GTK_PROGRESS_BAR (progress_bar));
  /*Increase the bar by 10% each time this function is called*/
  fraction += 0.1;
  /*Fill in the bar with the new fraction*/
  gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), fraction);
  /*Ensures that the fraction stays below 1.0*/
  if (fraction < 1.0) 
    return TRUE;
  return FALSE;
}

static void
activate (GtkApplication *app,
          gpointer        user_data)
{
  GtkWidget *window;
  GtkWidget *progress_bar;
  gdouble fraction = 0.0;
  /*Create a window with a title, and a default size*/
  window = gtk_application_window_new (app);
  gtk_window_set_title (GTK_WINDOW (window), "ProgressBar Example");
  gtk_window_set_default_size (GTK_WINDOW (window), 220, 20);
  /*Create a progressbar and add it to the window*/
  progress_bar = gtk_progress_bar_new ();
  gtk_container_add (GTK_CONTAINER (window), progress_bar);
  /*Fill in the given fraction of the bar. Has to be between 0.0-1.0 inclusive*/
  gtk_progress_bar_set_fraction (GTK_PROGRESS_BAR (progress_bar), fraction);
  /*Use the created fill function every 500 milliseconds*/
  g_timeout_add (500, fill, GTK_PROGRESS_BAR (progress_bar));
  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;
}

对于GTK 3.20和更新，在定义CSS时，似乎必须使用progress和trough类，而不是使用progressbar类。这对我有用：

progress, trough {
  min-height: 30px;
}
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