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// Generated by jextract

package org.purejava.appindicator;

import java.lang.invoke.*;
import java.lang.foreign.*;
import java.nio.ByteOrder;
import java.util.*;
import java.util.function.*;
import java.util.stream.*;

import static java.lang.foreign.ValueLayout.*;
import static java.lang.foreign.MemoryLayout.PathElement.*;

/**
 * {@snippet lang=c :
 * struct _GtkPrintOperationPreviewIface {
 *     GTypeInterface g_iface;
 *     void (*ready)(GtkPrintOperationPreview *, GtkPrintContext *);
 *     void (*got_page_size)(GtkPrintOperationPreview *, GtkPrintContext *, GtkPageSetup *);
 *     void (*render_page)(GtkPrintOperationPreview *, gint);
 *     gboolean (*is_selected)(GtkPrintOperationPreview *, gint);
 *     void (*end_preview)(GtkPrintOperationPreview *);
 *     void (*_gtk_reserved1)(void);
 *     void (*_gtk_reserved2)(void);
 *     void (*_gtk_reserved3)(void);
 *     void (*_gtk_reserved4)(void);
 *     void (*_gtk_reserved5)(void);
 *     void (*_gtk_reserved6)(void);
 *     void (*_gtk_reserved7)(void);
 *     void (*_gtk_reserved8)(void);
 * }
 * }
 */
public class _GtkPrintOperationPreviewIface {

    _GtkPrintOperationPreviewIface() {
        // Should not be called directly
    }

    private static final GroupLayout $LAYOUT = MemoryLayout.structLayout(
        _GTypeInterface.layout().withName("g_iface"),
        app_indicator_h.C_POINTER.withName("ready"),
        app_indicator_h.C_POINTER.withName("got_page_size"),
        app_indicator_h.C_POINTER.withName("render_page"),
        app_indicator_h.C_POINTER.withName("is_selected"),
        app_indicator_h.C_POINTER.withName("end_preview"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved1"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved2"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved3"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved4"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved5"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved6"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved7"),
        app_indicator_h.C_POINTER.withName("_gtk_reserved8")
    ).withName("_GtkPrintOperationPreviewIface");

    /**
     * The layout of this struct
     */
    public static final GroupLayout layout() {
        return $LAYOUT;
    }

    private static final GroupLayout g_iface$LAYOUT = (GroupLayout)$LAYOUT.select(groupElement("g_iface"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * GTypeInterface g_iface
     * }
     */
    public static final GroupLayout g_iface$layout() {
        return g_iface$LAYOUT;
    }

    private static final long g_iface$OFFSET = 0;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * GTypeInterface g_iface
     * }
     */
    public static final long g_iface$offset() {
        return g_iface$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * GTypeInterface g_iface
     * }
     */
    public static MemorySegment g_iface(MemorySegment struct) {
        return struct.asSlice(g_iface$OFFSET, g_iface$LAYOUT.byteSize());
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * GTypeInterface g_iface
     * }
     */
    public static void g_iface(MemorySegment struct, MemorySegment fieldValue) {
        MemorySegment.copy(fieldValue, 0L, struct, g_iface$OFFSET, g_iface$LAYOUT.byteSize());
    }

    /**
     * {@snippet lang=c :
     * void (*ready)(GtkPrintOperationPreview *, GtkPrintContext *)
     * }
     */
    public class ready {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply(MemorySegment _x0, MemorySegment _x1);
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid(
            app_indicator_h.C_POINTER,
            app_indicator_h.C_POINTER
        );

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(ready.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(ready.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr,MemorySegment _x0, MemorySegment _x1) {
            try {
                 DOWN$MH.invokeExact(funcPtr, _x0, _x1);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout ready$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("ready"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*ready)(GtkPrintOperationPreview *, GtkPrintContext *)
     * }
     */
    public static final AddressLayout ready$layout() {
        return ready$LAYOUT;
    }

    private static final long ready$OFFSET = 16;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*ready)(GtkPrintOperationPreview *, GtkPrintContext *)
     * }
     */
    public static final long ready$offset() {
        return ready$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*ready)(GtkPrintOperationPreview *, GtkPrintContext *)
     * }
     */
    public static MemorySegment ready(MemorySegment struct) {
        return struct.get(ready$LAYOUT, ready$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*ready)(GtkPrintOperationPreview *, GtkPrintContext *)
     * }
     */
    public static void ready(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(ready$LAYOUT, ready$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*got_page_size)(GtkPrintOperationPreview *, GtkPrintContext *, GtkPageSetup *)
     * }
     */
    public class got_page_size {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply(MemorySegment _x0, MemorySegment _x1, MemorySegment _x2);
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid(
            app_indicator_h.C_POINTER,
            app_indicator_h.C_POINTER,
            app_indicator_h.C_POINTER
        );

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(got_page_size.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(got_page_size.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr,MemorySegment _x0, MemorySegment _x1, MemorySegment _x2) {
            try {
                 DOWN$MH.invokeExact(funcPtr, _x0, _x1, _x2);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout got_page_size$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("got_page_size"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*got_page_size)(GtkPrintOperationPreview *, GtkPrintContext *, GtkPageSetup *)
     * }
     */
    public static final AddressLayout got_page_size$layout() {
        return got_page_size$LAYOUT;
    }

    private static final long got_page_size$OFFSET = 24;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*got_page_size)(GtkPrintOperationPreview *, GtkPrintContext *, GtkPageSetup *)
     * }
     */
    public static final long got_page_size$offset() {
        return got_page_size$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*got_page_size)(GtkPrintOperationPreview *, GtkPrintContext *, GtkPageSetup *)
     * }
     */
    public static MemorySegment got_page_size(MemorySegment struct) {
        return struct.get(got_page_size$LAYOUT, got_page_size$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*got_page_size)(GtkPrintOperationPreview *, GtkPrintContext *, GtkPageSetup *)
     * }
     */
    public static void got_page_size(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(got_page_size$LAYOUT, got_page_size$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*render_page)(GtkPrintOperationPreview *, gint)
     * }
     */
    public class render_page {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply(MemorySegment _x0, int _x1);
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid(
            app_indicator_h.C_POINTER,
            app_indicator_h.C_INT
        );

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(render_page.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(render_page.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr,MemorySegment _x0, int _x1) {
            try {
                 DOWN$MH.invokeExact(funcPtr, _x0, _x1);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout render_page$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("render_page"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*render_page)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static final AddressLayout render_page$layout() {
        return render_page$LAYOUT;
    }

    private static final long render_page$OFFSET = 32;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*render_page)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static final long render_page$offset() {
        return render_page$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*render_page)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static MemorySegment render_page(MemorySegment struct) {
        return struct.get(render_page$LAYOUT, render_page$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*render_page)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static void render_page(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(render_page$LAYOUT, render_page$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * gboolean (*is_selected)(GtkPrintOperationPreview *, gint)
     * }
     */
    public class is_selected {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            int apply(MemorySegment _x0, int _x1);
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.of(
            app_indicator_h.C_INT,
            app_indicator_h.C_POINTER,
            app_indicator_h.C_INT
        );

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(is_selected.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(is_selected.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static int invoke(MemorySegment funcPtr,MemorySegment _x0, int _x1) {
            try {
                return (int) DOWN$MH.invokeExact(funcPtr, _x0, _x1);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout is_selected$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("is_selected"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * gboolean (*is_selected)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static final AddressLayout is_selected$layout() {
        return is_selected$LAYOUT;
    }

    private static final long is_selected$OFFSET = 40;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * gboolean (*is_selected)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static final long is_selected$offset() {
        return is_selected$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * gboolean (*is_selected)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static MemorySegment is_selected(MemorySegment struct) {
        return struct.get(is_selected$LAYOUT, is_selected$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * gboolean (*is_selected)(GtkPrintOperationPreview *, gint)
     * }
     */
    public static void is_selected(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(is_selected$LAYOUT, is_selected$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*end_preview)(GtkPrintOperationPreview *)
     * }
     */
    public class end_preview {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply(MemorySegment _x0);
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid(
            app_indicator_h.C_POINTER
        );

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(end_preview.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(end_preview.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr,MemorySegment _x0) {
            try {
                 DOWN$MH.invokeExact(funcPtr, _x0);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout end_preview$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("end_preview"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*end_preview)(GtkPrintOperationPreview *)
     * }
     */
    public static final AddressLayout end_preview$layout() {
        return end_preview$LAYOUT;
    }

    private static final long end_preview$OFFSET = 48;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*end_preview)(GtkPrintOperationPreview *)
     * }
     */
    public static final long end_preview$offset() {
        return end_preview$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*end_preview)(GtkPrintOperationPreview *)
     * }
     */
    public static MemorySegment end_preview(MemorySegment struct) {
        return struct.get(end_preview$LAYOUT, end_preview$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*end_preview)(GtkPrintOperationPreview *)
     * }
     */
    public static void end_preview(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(end_preview$LAYOUT, end_preview$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved1)(void)
     * }
     */
    public class _gtk_reserved1 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved1.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved1.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved1$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved1"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved1)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved1$layout() {
        return _gtk_reserved1$LAYOUT;
    }

    private static final long _gtk_reserved1$OFFSET = 56;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved1)(void)
     * }
     */
    public static final long _gtk_reserved1$offset() {
        return _gtk_reserved1$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved1)(void)
     * }
     */
    public static MemorySegment _gtk_reserved1(MemorySegment struct) {
        return struct.get(_gtk_reserved1$LAYOUT, _gtk_reserved1$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved1)(void)
     * }
     */
    public static void _gtk_reserved1(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved1$LAYOUT, _gtk_reserved1$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved2)(void)
     * }
     */
    public class _gtk_reserved2 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved2.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved2.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved2$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved2"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved2)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved2$layout() {
        return _gtk_reserved2$LAYOUT;
    }

    private static final long _gtk_reserved2$OFFSET = 64;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved2)(void)
     * }
     */
    public static final long _gtk_reserved2$offset() {
        return _gtk_reserved2$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved2)(void)
     * }
     */
    public static MemorySegment _gtk_reserved2(MemorySegment struct) {
        return struct.get(_gtk_reserved2$LAYOUT, _gtk_reserved2$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved2)(void)
     * }
     */
    public static void _gtk_reserved2(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved2$LAYOUT, _gtk_reserved2$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved3)(void)
     * }
     */
    public class _gtk_reserved3 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved3.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved3.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved3$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved3"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved3)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved3$layout() {
        return _gtk_reserved3$LAYOUT;
    }

    private static final long _gtk_reserved3$OFFSET = 72;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved3)(void)
     * }
     */
    public static final long _gtk_reserved3$offset() {
        return _gtk_reserved3$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved3)(void)
     * }
     */
    public static MemorySegment _gtk_reserved3(MemorySegment struct) {
        return struct.get(_gtk_reserved3$LAYOUT, _gtk_reserved3$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved3)(void)
     * }
     */
    public static void _gtk_reserved3(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved3$LAYOUT, _gtk_reserved3$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved4)(void)
     * }
     */
    public class _gtk_reserved4 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved4.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved4.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved4$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved4"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved4)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved4$layout() {
        return _gtk_reserved4$LAYOUT;
    }

    private static final long _gtk_reserved4$OFFSET = 80;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved4)(void)
     * }
     */
    public static final long _gtk_reserved4$offset() {
        return _gtk_reserved4$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved4)(void)
     * }
     */
    public static MemorySegment _gtk_reserved4(MemorySegment struct) {
        return struct.get(_gtk_reserved4$LAYOUT, _gtk_reserved4$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved4)(void)
     * }
     */
    public static void _gtk_reserved4(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved4$LAYOUT, _gtk_reserved4$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved5)(void)
     * }
     */
    public class _gtk_reserved5 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved5.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved5.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved5$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved5"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved5)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved5$layout() {
        return _gtk_reserved5$LAYOUT;
    }

    private static final long _gtk_reserved5$OFFSET = 88;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved5)(void)
     * }
     */
    public static final long _gtk_reserved5$offset() {
        return _gtk_reserved5$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved5)(void)
     * }
     */
    public static MemorySegment _gtk_reserved5(MemorySegment struct) {
        return struct.get(_gtk_reserved5$LAYOUT, _gtk_reserved5$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved5)(void)
     * }
     */
    public static void _gtk_reserved5(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved5$LAYOUT, _gtk_reserved5$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved6)(void)
     * }
     */
    public class _gtk_reserved6 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved6.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved6.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved6$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved6"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved6)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved6$layout() {
        return _gtk_reserved6$LAYOUT;
    }

    private static final long _gtk_reserved6$OFFSET = 96;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved6)(void)
     * }
     */
    public static final long _gtk_reserved6$offset() {
        return _gtk_reserved6$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved6)(void)
     * }
     */
    public static MemorySegment _gtk_reserved6(MemorySegment struct) {
        return struct.get(_gtk_reserved6$LAYOUT, _gtk_reserved6$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved6)(void)
     * }
     */
    public static void _gtk_reserved6(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved6$LAYOUT, _gtk_reserved6$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved7)(void)
     * }
     */
    public class _gtk_reserved7 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved7.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved7.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved7$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved7"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved7)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved7$layout() {
        return _gtk_reserved7$LAYOUT;
    }

    private static final long _gtk_reserved7$OFFSET = 104;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved7)(void)
     * }
     */
    public static final long _gtk_reserved7$offset() {
        return _gtk_reserved7$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved7)(void)
     * }
     */
    public static MemorySegment _gtk_reserved7(MemorySegment struct) {
        return struct.get(_gtk_reserved7$LAYOUT, _gtk_reserved7$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved7)(void)
     * }
     */
    public static void _gtk_reserved7(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved7$LAYOUT, _gtk_reserved7$OFFSET, fieldValue);
    }

    /**
     * {@snippet lang=c :
     * void (*_gtk_reserved8)(void)
     * }
     */
    public class _gtk_reserved8 {

        /**
         * The function pointer signature, expressed as a functional interface
         */
        public interface Function {
            void apply();
        }

        private static final FunctionDescriptor $DESC = FunctionDescriptor.ofVoid();

        /**
         * The descriptor of this function pointer
         */
        public static FunctionDescriptor descriptor() {
            return $DESC;
        }

        private static final MethodHandle UP$MH = app_indicator_h.upcallHandle(_gtk_reserved8.Function.class, "apply", $DESC);

        /**
         * Allocates a new upcall stub, whose implementation is defined by {@code fi}.
         * The lifetime of the returned segment is managed by {@code arena}
         */
        public static MemorySegment allocate(_gtk_reserved8.Function fi, Arena arena) {
            return Linker.nativeLinker().upcallStub(UP$MH.bindTo(fi), $DESC, arena);
        }

        private static final MethodHandle DOWN$MH = Linker.nativeLinker().downcallHandle($DESC);

        /**
         * Invoke the upcall stub {@code funcPtr}, with given parameters
         */
        public static void invoke(MemorySegment funcPtr) {
            try {
                 DOWN$MH.invokeExact(funcPtr);
            } catch (Throwable ex$) {
                throw new AssertionError("should not reach here", ex$);
            }
        }
    }

    private static final AddressLayout _gtk_reserved8$LAYOUT = (AddressLayout)$LAYOUT.select(groupElement("_gtk_reserved8"));

    /**
     * Layout for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved8)(void)
     * }
     */
    public static final AddressLayout _gtk_reserved8$layout() {
        return _gtk_reserved8$LAYOUT;
    }

    private static final long _gtk_reserved8$OFFSET = 112;

    /**
     * Offset for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved8)(void)
     * }
     */
    public static final long _gtk_reserved8$offset() {
        return _gtk_reserved8$OFFSET;
    }

    /**
     * Getter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved8)(void)
     * }
     */
    public static MemorySegment _gtk_reserved8(MemorySegment struct) {
        return struct.get(_gtk_reserved8$LAYOUT, _gtk_reserved8$OFFSET);
    }

    /**
     * Setter for field:
     * {@snippet lang=c :
     * void (*_gtk_reserved8)(void)
     * }
     */
    public static void _gtk_reserved8(MemorySegment struct, MemorySegment fieldValue) {
        struct.set(_gtk_reserved8$LAYOUT, _gtk_reserved8$OFFSET, fieldValue);
    }

    /**
     * Obtains a slice of {@code arrayParam} which selects the array element at {@code index}.
     * The returned segment has address {@code arrayParam.address() + index * layout().byteSize()}
     */
    public static MemorySegment asSlice(MemorySegment array, long index) {
        return array.asSlice(layout().byteSize() * index);
    }

    /**
     * The size (in bytes) of this struct
     */
    public static long sizeof() { return layout().byteSize(); }

    /**
     * Allocate a segment of size {@code layout().byteSize()} using {@code allocator}
     */
    public static MemorySegment allocate(SegmentAllocator allocator) {
        return allocator.allocate(layout());
    }

    /**
     * Allocate an array of size {@code elementCount} using {@code allocator}.
     * The returned segment has size {@code elementCount * layout().byteSize()}.
     */
    public static MemorySegment allocateArray(long elementCount, SegmentAllocator allocator) {
        return allocator.allocate(MemoryLayout.sequenceLayout(elementCount, layout()));
    }

    /**
     * Reinterprets {@code addr} using target {@code arena} and {@code cleanupAction) (if any).
     * The returned segment has size {@code layout().byteSize()}
     */
    public static MemorySegment reinterpret(MemorySegment addr, Arena arena, Consumer cleanup) {
        return reinterpret(addr, 1, arena, cleanup);
    }

    /**
     * Reinterprets {@code addr} using target {@code arena} and {@code cleanupAction) (if any).
     * The returned segment has size {@code elementCount * layout().byteSize()}
     */
    public static MemorySegment reinterpret(MemorySegment addr, long elementCount, Arena arena, Consumer cleanup) {
        return addr.reinterpret(layout().byteSize() * elementCount, arena, cleanup);
    }
}





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