引用：https://www.devexpress.com/Support/Center/Question/Details/A2761

You can change the default font used by DevExpress WindowsForms controls with the following static properties:

DevExpress.XtraEditors.WindowsFormsSettings.DefaultFont - Specifies the default font of controls (except menus and toolbars).
DevExpress.XtraEditors.WindowsFormsSettings.DefaultMenuFont - Specifies the default font used by menus and toolbars.
DevExpress.XtraEditors.WindowsFormsSettings.DefaultPrintFont - Specifies the default text font used when printing DevExpress controls.

可以通过修改以下静态属性：

DevExpress.XtraEditors.WindowsFormsSettings.DefaultFont - 指定控件的默认字体，除了菜单（menu）和工具栏（toolbar）

DevExpress.XtraEditors.WindowsFormsSettings.DefaultMenuFont - 指定菜单（menu）和工具栏（toolbar）的默认字体

DevExpress.XtraEditors.WindowsFormsSettings.DefaultPrintFont - 指定打印控件（printing）的默认文本字体

[STAThread]static void Main() {    DevExpress.XtraEditors.WindowsFormsSettings.DefaultFont = new Font("Courier New", 10);    Application.Run(new Form1());}

如果想改变某个控件的字体，需要通过设置AppearanceObject.Font属性（通常，外观属性都有名为“Appearance”的字样）

using DevExpress.Utils;using DevExpress.XtraGrid.Views.Grid;void SetGridFont(GridView view, Font font) {    foreach(AppearanceObject ap in view.Appearance)        ap.Font = font;}// USAGE:SetGridFont(gridView1, new Font("Courier New", 10));

如何修改全部DevExpress控件的字体