C# WPF 可拉伸窗口大小，当Resize=NoResize时可用

本文链接：https://blog.youkuaiyun.com/spotatoes/article/details/50867355

本文介绍了如何在C# WPF应用中，即使设置Resize为NoResize，也能实现窗口大小的可拉伸功能。通过特定的代码调用，开发者可以实现这一特性。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Input;

namespace WpfApplication1
{
    public class WindowResizer
    {
        private Window target = null;

        private bool resizeRight = false;
        private bool resizeLeft = false;
        private bool resizeUp = false;
        private bool resizeDown = false;

        private Dictionary<UIElement, short> leftElements = new Dictionary<UIElement, short>();
        private Dictionary<UIElement, short> rightElements = new Dictionary<UIElement, short>();
        private Dictionary<UIElement, short> upElements = new Dictionary<UIElement, short>();
        private Dictionary<UIElement, short> downElements = new Dictionary<UIElement, short>();

        private PointAPI resizePoint = new PointAPI();
        private Size resizeSize = new Size();
        private Point resizeWindowPoint = new Point();

        private delegate void RefreshDelegate();

        public WindowResizer(Window target)
        {
            this.target = target;

            if (target == null)
            {
                throw new Exception("Invalid Window handle");
            }
        }

        #region add resize components
        private void connectMouseHandlers(UIElement element)
        {
            element.MouseLeftButtonDown += new MouseButtonEventHandler(element_MouseLeftButtonDown);
            element.MouseEnter += new System.Windows.Input.MouseEventHandler(element_MouseEnter);
            element.MouseLeave += new System.Windows.Input.MouseEventHandler(setArrowCursor);
        }

        public void addResizerRight(UIElement element)
        {
            connectMouseHandlers(element);
            rightElements.Add(element, 0);
        }

        public void addResizerLeft(UIElement element)
        {
            connectMouseHandlers(element);
            leftElements.Add(element, 0);
        }

        public void addResizerUp(UIElement element)
        {
            connectMouseHandlers(element);
            upElements.Add(element, 0);