Add files via upload

tools/viewer/ImageDisplayForm.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Drawing;
+using System.Windows.Forms;
+using System.IO;
+
+namespace KortAppZ.Tools.Viewer
+{
+    public class ImageDisplayForm : Form
+    {
+        private PictureBox? pictureBox;
+        private Image? currentImage;
+        
+        public ImageDisplayForm()
+        {
+            InitializeComponent();
+        }
+        
+        private void InitializeComponent()
+        {
+            this.pictureBox = new PictureBox();
+            // 
+            // pictureBox
+            // 
+            this.pictureBox.Dock = DockStyle.Fill;
+            this.pictureBox.SizeMode = PictureBoxSizeMode.Zoom;
+            this.pictureBox.BackColor = Color.Black;
+            // 
+            // ImageDisplayForm
+            // 
+            this.Text = "图片查看";
+            this.ClientSize = new Size(800, 600);
+            this.MaximizeBox = false;
+            this.MinimizeBox = true;
+            this.FormBorderStyle = FormBorderStyle.FixedDialog;
+            this.ControlBox = true;
+            this.ShowIcon = true;
+            this.MaximizedBounds = Screen.FromHandle(this.Handle).WorkingArea;
+            this.Controls.Add(this.pictureBox);
+            this.FormClosing += new FormClosingEventHandler(ImageDisplayForm_FormClosing);
+        }
+        
+        public void LoadImage(string filePath)
+        {
+            try
+            {
+                if (currentImage != null)
+                {
+                    currentImage.Dispose();
+                    currentImage = null;
+                }
+                
+                currentImage = ImageFileHandler.LoadImage(filePath);
+                pictureBox.Image = currentImage;
+                this.Text = $"图片查看 - {Path.GetFileName(filePath)}";
+            }
+            catch (Exception ex)
+            {
+                MessageBox.Show($"无法加载图片: {ex.Message}", "错误", 
+                    MessageBoxButtons.OK, MessageBoxIcon.Error);
+            }
+        }
+        
+        private void ImageDisplayForm_FormClosing(object sender, FormClosingEventArgs e)
+        {
+            if (currentImage != null)
+            {
+                currentImage.Dispose();
+                currentImage = null;
+            }
+        }
+    }
+}