glfw: add Window.defaultHints

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

glfw/src/Window.zig

@@ -0,0 +1,31 @@
+//! Window type and related functions
+
+const std = @import("std");
+const c = @import("c.zig").c;
+
+const Error = @import("errors.zig").Error;
+const getError = @import("errors.zig").getError;
+
+const Window = @This();
+
+/// Resets all window hints to their default values.
+///
+/// This function resets all window hints to their default values.
+///
+/// Possible errors include glfw.Error.NotInitialized.
+///
+/// @thread_safety This function must only be called from the main thread.
+///
+/// see also: window_hints, glfw.Window.hint, glfw.Window.hintString
+pub fn defaultHints() Error!void {
+    c.glfwDefaultWindowHints();
+    try getError();
+}
+
+test "defaultHints" {
+    const glfw = @import("main.zig");
+    try glfw.init();
+    defer glfw.terminate();
+
+    try defaultHints();
+}