diff --git a/src/popup_modal.rs b/src/popup_modal.rs
index 339f9cf..791a644 100644
--- a/src/popup_modal.rs
+++ b/src/popup_modal.rs
@@ -26,6 +26,78 @@ impl<'ui, 'p> PopupModal<'ui, 'p> {
         self.opened = Some(opened);
         self
     }
+    pub fn flags(mut self, flags: ImGuiWindowFlags) -> Self {
+        self.flags = flags;
+        self
+    }
+    pub fn title_bar(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoTitleBar, !value);
+        self
+    }
+    pub fn resizable(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoResize, !value);
+        self
+    }
+    pub fn movable(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoMove, !value);
+        self
+    }
+    pub fn scroll_bar(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoScrollbar, !value);
+        self
+    }
+    pub fn scrollable(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoScrollWithMouse, !value);
+        self
+    }
+    pub fn collapsible(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoCollapse, !value);
+        self
+    }
+    pub fn always_auto_resize(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::AlwaysAutoResize, value);
+        self
+    }
+    pub fn save_settings(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoSavedSettings, !value);
+        self
+    }
+    pub fn inputs(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoInputs, !value);
+        self
+    }
+    pub fn menu_bar(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::MenuBar, value);
+        self
+    }
+    pub fn horizontal_scrollbar(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::HorizontalScrollbar, value);
+        self
+    }
+    pub fn no_focus_on_appearing(mut self, value: bool) -> Self {
+        self.flags.set(ImGuiWindowFlags::NoFocusOnAppearing, value);
+        self
+    }
+    pub fn no_bring_to_front_on_focus(mut self, value: bool) -> Self {
+        self.flags
+            .set(ImGuiWindowFlags::NoBringToFrontOnFocus, value);
+        self
+    }
+    pub fn always_vertical_scrollbar(mut self, value: bool) -> Self {
+        self.flags
+            .set(ImGuiWindowFlags::AlwaysVerticalScrollbar, value);
+        self
+    }
+    pub fn always_horizontal_scrollbar(mut self, value: bool) -> Self {
+        self.flags
+            .set(ImGuiWindowFlags::AlwaysHorizontalScrollbar, value);
+        self
+    }
+    pub fn always_use_window_padding(mut self, value: bool) -> Self {
+        self.flags
+            .set(ImGuiWindowFlags::AlwaysUseWindowPadding, value);
+        self
+    }
     pub fn build<F: FnOnce()>(self, f: F) {
         let render = unsafe {
             sys::igBeginPopupModal(