GtkDialog mapped without a transient parent. This is discouraged.

这个警告信息是 GTK 程序开发中常见的问题之一，它表示一个 dialog 窗口被创建时没有指定一个父窗口，这样会让程序的用户体验变差。因为如果没有指定父窗口，dialog 窗口可能会被遮挡，或者在任务栏中不易察觉。你可以通过为 dialog 指定一个父窗口来解决这个问题，例如：

dialog.set_transient_for(parent_window)

其中 `parent_window` 是 dialog 的父窗口。如果你没有可用的父窗口，也可以使用主窗口作为 dialog 的父窗口，例如：

dialog.set_transient_for(self.get_toplevel())

这样可以让 dialog 窗口始终显示在主窗口的上方。

相关问题

ubuntu GtkDialog mapped without a transient parent. This is discouraged.

As an AI language model, I cannot access the context or information related to your system, so I will provide you with a general answer.

The error message "GtkDialog mapped without a transient parent. This is discouraged" typically occurs when a GtkDialog is created without a parent window or the parent window is not set before the dialog is displayed. A GtkDialog is a modal dialog box that requires a parent window to be displayed correctly.

To fix this error, make sure you set the parent window using the `gtk_window_set_transient_for()` function before displaying the dialog. This ensures that the dialog is properly associated with the parent window and can be displayed correctly.

Here is an example code snippet:

// create the parent window
GtkWidget *parent_window = gtk_window_new(GTK_WINDOW_TOPLEVEL);

// create the dialog
GtkWidget *dialog = gtk_dialog_new();

// set the parent window for the dialog
gtk_window_set_transient_for(GTK_WINDOW(dialog), GTK_WINDOW(parent_window));

// display the dialog
gtk_dialog_run(GTK_DIALOG(dialog));

By setting the parent window for the dialog, you should no longer receive the "GtkDialog mapped without a transient parent. This is discouraged" error.

Gtk-Message: 16:39:00.878: GtkDialog mapped without a transient parent. This is discouraged.

This message means that a GtkDialog widget has been displayed without a parent window specified. GtkDialog should always have a parent window to ensure proper behavior with respect to focus, positioning, and modality. Not specifying a parent window can lead to unexpected behavior and is discouraged.