diff --git a/build.zig b/build.zig
index c2fbf29..e0315b9 100644
--- a/build.zig
+++ b/build.zig
@@ -64,6 +64,7 @@ const examples = &[_][]const u8{
     "menu",
     "crud",
     "circle-drawer",
+    "control-gallery",
 };
 
 const uses_extras = &[_]bool{
@@ -78,4 +79,5 @@ const uses_extras = &[_]bool{
     false,
     false,
     false,
+    false,
 };
diff --git a/examples/control-gallery.zig b/examples/control-gallery.zig
new file mode 100644
index 0000000..e3485df
--- /dev/null
+++ b/examples/control-gallery.zig
@@ -0,0 +1,334 @@
+const std = @import("std");
+const ui = @import("ui");
+
+var global_app: App = undefined;
+
+const App = struct {
+    main_window: *ui.Window,
+    spinbox: *ui.Spinbox,
+    slider: *ui.Slider,
+    progress_bar: *ui.ProgressBar,
+    open_file_entry: *ui.Entry,
+    open_folder_entry: *ui.Entry,
+    save_file_entry: *ui.Entry,
+};
+
+fn on_closing(_: *ui.Window, _: ?*void) ui.Error!ui.Window.ClosingAction {
+    ui.Quit();
+    return .should_close;
+}
+
+fn on_should_quit(main_window_opt: ?*ui.Window) ui.Error!ui.QuitAction {
+    const main_window = main_window_opt orelse return error.LibUINullUserdata;
+    main_window.as_control().Destroy();
+    return .should_quit;
+}
+
+fn make_basic_controls_page() !*ui.Control {
+    const vbox = try ui.Box.New(.Vertical);
+    vbox.SetPadded(true);
+
+    const hbox = try ui.Box.New(.Horizontal);
+    hbox.SetPadded(true);
+    vbox.Append(hbox.as_control(), .dont_stretch);
+
+    hbox.Append(
+        (try ui.Button.New("Button")).as_control(),
+        .dont_stretch);
+    hbox.Append(
+        (try ui.Checkbox.New("Checkbox")).as_control(),
+        .dont_stretch);
+
+    vbox.Append(
+        (try ui.Label.New("This is a label.\nLabels can span multiple lines.")).as_control(),
+        .dont_stretch);
+    vbox.Append(
+        (try ui.Separator.New(.Horizontal)).as_control(),
+        .dont_stretch);
+
+    const group = try ui.Group.New("Entries");
+    group.SetMargined(true);
+    vbox.Append(group.as_control(), .stretch);
+
+    const entry_form = try ui.Form.New();
+    entry_form.SetPadded(true);
+    group.SetChild(entry_form.as_control());
+
+    entry_form.Append(
+        "Entry",
+        (try ui.Entry.New(.Entry)).as_control(),
+        .dont_stretch);
+    entry_form.Append(
+        "Password Entry",
+        (try ui.Entry.New(.Password)).as_control(),
+        .dont_stretch);
+    entry_form.Append(
+        "Search Entry",
+        (try ui.Entry.New(.Search)).as_control(),
+        .dont_stretch);
+    entry_form.Append(
+        "Multiline Entry",
+        (try ui.MultilineEntry.New(.Wrapping)).as_control(),
+        .stretch);
+    entry_form.Append(
+        "Multiline Entry No Wrap",
+        (try ui.MultilineEntry.New(.NonWrapping)).as_control(),
+        .stretch);
+
+    return vbox.as_control();
+}
+
+fn on_spinbox_changed(s: *ui.Spinbox, app_opt: ?*App) ui.Error!void {
+    const app = app_opt orelse return error.LibUINullUserdata;
+    app.slider.SetValue(s.Value());
+    app.progress_bar.SetValue(s.Value());
+}
+
+fn on_slider_changed(s: *ui.Slider, app_opt: ?*App) ui.Error!void {
+    const app = app_opt orelse return error.LibUINullUserdata;
+    app.spinbox.SetValue(s.Value());
+    app.progress_bar.SetValue(s.Value());
+}
+
+fn make_numbers_page(app: *App) !*ui.Control {
+    const hbox = try ui.Box.New(.Horizontal);
+    hbox.SetPadded(true);
+
+    const numbers_group = try ui.Group.New("Numbers");
+    numbers_group.SetMargined(true);
+    hbox.Append(numbers_group.as_control(), .stretch);
+
+    const numbers_vbox = try ui.Box.New(.Vertical);
+    numbers_vbox.SetPadded(true);
+    numbers_group.SetChild(numbers_vbox.as_control());
+
+    app.spinbox = try ui.Spinbox.New(.{ .Integer = .{
+        .min = 0,
+        .max = 100,
+    }});
+    app.slider = try ui.Slider.New(.{ .Integer = .{
+        .min = 0,
+        .max = 100,
+    }});
+    app.progress_bar = try ui.ProgressBar.New();
+    app.spinbox.OnChanged(App, ui.Error, on_spinbox_changed, app);
+    app.slider.OnChanged(App, ui.Error, on_slider_changed, app);
+    numbers_vbox.Append(app.spinbox.as_control(), .dont_stretch);
+    numbers_vbox.Append(app.slider.as_control(), .dont_stretch);
+    numbers_vbox.Append(app.progress_bar.as_control(), .dont_stretch);
+
+    const indeterminate_pb = try ui.ProgressBar.New();
+    indeterminate_pb.SetValue(-1);
+    numbers_vbox.Append(indeterminate_pb.as_control(), .dont_stretch);
+
+    const lists_group = try ui.Group.New("Lists");
+    lists_group.SetMargined(true);
+    hbox.Append(lists_group.as_control(), .stretch);
+
+    const lists_vbox = try ui.Box.New(.Vertical);
+    lists_vbox.SetPadded(true);
+    lists_group.SetChild(lists_vbox.as_control());
+
+    const cbox = try ui.Combobox.New();
+    cbox.Append("Combobox Item 1");
+    cbox.Append("Combobox Item 2");
+    cbox.Append("Combobox Item 3");
+    lists_vbox.Append(cbox.as_control(), .dont_stretch);
+
+    const ecbox = try ui.EditableCombobox.New();
+    ecbox.Append("Editable Item 1");
+    ecbox.Append("Editable Item 2");
+    ecbox.Append("Editable Item 3");
+    lists_vbox.Append(ecbox.as_control(), .dont_stretch);
+
+    const rb = try ui.RadioButtons.New();
+    rb.Append("Radio Button 1");
+    rb.Append("Radio Button 2");
+    rb.Append("Radio Button 3");
+    lists_vbox.Append(rb.as_control(), .dont_stretch);
+
+    return hbox.as_control();
+}
+
+fn on_open_file_clicked(_: *ui.Button, app_opt: ?*App) ui.Error!void {
+    const app = app_opt orelse return error.LibUINullUserdata;
+    const filename =
+        app.main_window.OpenFile() orelse {
+            app.open_file_entry.SetText("(cancelled)");
+            return;
+        };
+    app.open_file_entry.SetText(filename);
+    ui.FreeText(filename);
+}
+
+fn on_open_folder_clicked(_: *ui.Button, app_opt: ?*App) ui.Error!void {
+    const app = app_opt orelse return error.LibUINullUserdata;
+    const filename =
+        app.main_window.OpenFolder() orelse {
+            app.open_folder_entry.SetText("(cancelled)");
+            return;
+        };
+    app.open_folder_entry.SetText(filename);
+    ui.FreeText(filename);
+}
+
+fn on_save_file_clicked(_: *ui.Button, app_opt: ?*App) ui.Error!void {
+    const app = app_opt orelse return error.LibUINullUserdata;
+    const filename =
+        app.main_window.SaveFile() orelse {
+            app.save_file_entry.SetText("(cancelled)");
+            return;
+        };
+    app.save_file_entry.SetText(filename);
+    ui.FreeText(filename);
+}
+
+fn on_msg_box_clicked(_: *ui.Button, app_opt: ?*App) ui.Error!void {
+    const app = app_opt orelse return error.LibUINullUserdata;
+    app.main_window.MsgBox(
+        "This is a normal message box.",
+        "More detailed information can be shown here.");
+}
+
+fn on_msg_box_error_clicked(_: *ui.Button, app_opt: ?*App) ui.Error!void {
+    const app = app_opt orelse return error.LibUINullUserdata;
+    app.main_window.MsgBox(
+        "This message box describes an error.",
+        "More detailed information can be shown here.");
+}
+
+fn make_data_choosers_page(app: *App) !*ui.Control {
+    const hbox = try ui.Box.New(.Horizontal);
+    hbox.SetPadded(true);
+
+    const left_vbox = try ui.Box.New(.Vertical);
+    left_vbox.SetPadded(true);
+    hbox.Append(left_vbox.as_control(), .dont_stretch);
+
+    left_vbox.Append(
+        (try ui.DateTimePicker.New(.Date)).as_control(),
+        .dont_stretch);
+    left_vbox.Append(
+        (try ui.DateTimePicker.New(.Time)).as_control(),
+        .dont_stretch);
+    left_vbox.Append(
+        (try ui.DateTimePicker.New(.DateTime)).as_control(),
+        .dont_stretch);
+
+    left_vbox.Append(
+        (try ui.FontButton.New()).as_control(),
+        .dont_stretch);
+    left_vbox.Append(
+        (try ui.ColorButton.New()).as_control(),
+        .dont_stretch);
+
+    hbox.Append(
+        (try ui.Separator.New(.Vertical)).as_control(),
+        .dont_stretch);
+
+    const right_vbox = try ui.Box.New(.Vertical);
+    right_vbox.SetPadded(true);
+    hbox.Append(right_vbox.as_control(), .stretch);
+
+    const entry_grid = try ui.Grid.New();
+    entry_grid.SetPadded(true);
+    right_vbox.Append(entry_grid.as_control(), .dont_stretch);
+
+    const open_file_button = try ui.Button.New("  Open File  ");
+    const open_file_entry = try ui.Entry.New(.Entry);
+    app.open_file_entry = open_file_entry;
+    open_file_entry.SetReadOnly(true);
+    open_file_button.OnClicked(App, ui.Error, on_open_file_clicked, app);
+    entry_grid.Append(
+        open_file_button.as_control(),
+        0, 0, 1, 1,
+        0, .Fill, 0, .Fill);
+    entry_grid.Append(
+        open_file_entry.as_control(),
+        1, 0, 1, 1,
+        1, .Fill, 0, .Fill);
+
+    const open_folder_button = try ui.Button.New("Open Folder");
+    const open_folder_entry = try ui.Entry.New(.Entry);
+    app.open_folder_entry = open_folder_entry;
+    open_folder_entry.SetReadOnly(true);
+    open_folder_button.OnClicked(App, ui.Error, on_open_folder_clicked, app);
+    entry_grid.Append(
+        open_folder_button.as_control(),
+        0, 1, 1, 1,
+        0, .Fill, 0, .Fill);
+    entry_grid.Append(
+        open_folder_entry.as_control(),
+        1, 1, 1, 1,
+        1, .Fill, 0, .Fill);
+
+    const save_file_button = try ui.Button.New("  Save File  ");
+    const save_file_entry = try ui.Entry.New(.Entry);
+    app.save_file_entry = save_file_entry;
+    save_file_entry.SetReadOnly(true);
+    save_file_button.OnClicked(App, ui.Error, on_save_file_clicked, app);
+    entry_grid.Append(
+        save_file_button.as_control(),
+        0, 2, 1, 1,
+        0, .Fill, 0, .Fill);
+    entry_grid.Append(
+        save_file_entry.as_control(),
+        1, 2, 1, 1,
+        1, .Fill, 0, .Fill);
+
+    const msg_grid = try ui.Grid.New();
+    msg_grid.SetPadded(true);
+    entry_grid.Append(
+        msg_grid.as_control(),
+        0, 3, 2, 1,
+        0, .Center, 0, .Start);
+
+    const msg_box_button = try ui.Button.New("Message Box");
+    msg_box_button.OnClicked(App, ui.Error, on_msg_box_clicked, app);
+    msg_grid.Append(
+        msg_box_button.as_control(),
+        0, 0, 1, 1,
+        0, .Fill, 0, .Fill);
+    const error_box_button = try ui.Button.New("Error Box");
+    error_box_button.OnClicked(App, ui.Error, on_msg_box_error_clicked, app);
+    msg_grid.Append(
+        error_box_button.as_control(),
+        1, 0, 1, 1,
+        0, .Fill, 0, .Fill);
+
+    return hbox.as_control();
+}
+
+pub fn main() !void {
+    var init_data = ui.InitData{
+        .options = .{ .Size = 0 },
+    };
+    ui.Init(&init_data) catch {
+        std.debug.print("Error initializing LibUI: {s}\n", .{init_data.get_error()});
+        init_data.free_error();
+        return;
+    };
+    defer ui.Uninit();
+
+    var app = &global_app;
+    app.main_window = try ui.Window.New("libui Control Gallery", 640, 480, .show_menubar);
+    app.main_window.OnClosing(void, ui.Error, on_closing, null);
+    ui.OnShouldQuit(ui.Window, ui.Error, on_should_quit, app.main_window);
+
+    const tab = try ui.Tab.New();
+    app.main_window.SetChild(tab.as_control());
+    app.main_window.SetMargined(true);
+
+    tab.Append("Basic Controls", try make_basic_controls_page());
+    tab.SetMargined(0, true);
+
+    tab.Append("Numbers and Lists", try make_numbers_page(app));
+    tab.SetMargined(1, true);
+
+    tab.Append("Data Choosers", try make_data_choosers_page(app));
+    tab.SetMargined(2, true);
+
+    app.main_window.as_control().Show();
+
+    ui.Main();
+}
diff --git a/src/ui.zig b/src/ui.zig
index 8c7461e..748dade 100644
--- a/src/ui.zig
+++ b/src/ui.zig
@@ -594,7 +594,7 @@ pub const Entry = opaque {
     pub fn ReadOnly(e: *Entry) bool {
         return uiEntryReadOnly(e) == 1;
     }
-    pub fn SetReadOnly(e: *Entry, readonly: c_int) void {
+    pub fn SetReadOnly(e: *Entry, readonly: bool) void {
         return uiEntrySetReadOnly(e, @intFromBool(readonly));
     }
     pub const TypeEnum = enum {
@@ -685,7 +685,7 @@ pub const Group = opaque {
         return uiGroupMargined(g) == 1;
     }
     pub fn SetMargined(g: *Group, margined: bool) void {
-        uiGroupSetMargined(g, margined);
+        uiGroupSetMargined(g, @intFromBool(margined));
     }
     pub fn New(title: [*:0]const u8) !*Group {
         return uiNewGroup(title) orelse error.InitGroup;
@@ -780,8 +780,14 @@ pub const Slider = opaque {
         uiSliderOnReleased(self, callback, userdata);
     }
     pub const SetRange = uiSliderSetRange;
-    pub fn New(min: c_int, max: c_int) !*Slider {
-        return uiNewSlider(min, max) orelse error.InitSlider;
+
+    pub const TypeEnum = union(enum) {
+        Integer: struct { min: c_int, max: c_int },
+    };
+    pub fn New(t: TypeEnum) !*Slider {
+        return switch (t) {
+            .Integer => |int| uiNewSlider(int.min, int.max),
+        } orelse error.InitSlider;
     }
 };