添加项目文件。

Sai.Toolkit.Revit/Helpers/StatusBarAssist.cs

@@ -0,0 +1,42 @@
+using System.Runtime.InteropServices;
+
+using Sai.Toolkit.Revit.Helpers;
+
+namespace Sai.Toolkit.Revit.UserControls;
+
+public class StatusBarAssist
+{
+
+    private IntPtr statusBar = IntPtr.Zero;
+
+    protected StatusBarAssist()
+    {
+        // 找到状态栏，这样我们就可以添加信息了。
+        var revitHandle = System.Diagnostics.Process.GetCurrentProcess().MainWindowHandle;
+        if (revitHandle != IntPtr.Zero)
+        {
+            statusBar = KeyIntPtrHelper.FindWindowEx(revitHandle, IntPtr.Zero, "msctls_statusbar32", string.Empty);
+        }
+    }
+
+    /// <summary>
+    /// 如果状态栏有有效句柄，则设置状态栏的值。
+    /// </summary>
+    /// <param name="msg">The message.</param>
+    public void Set(string msg)
+    {
+        if (statusBar != IntPtr.Zero)
+        {
+            KeyIntPtrHelper.SetWindowText(statusBar, msg);
+        }
+    }
+
+    /// <summary>
+    /// 创建一个新的 StatusBarAssist。
+    /// </summary>
+    /// <returns>The StatusBarAssist.</returns>
+    public static StatusBarAssist Create()
+    {
+        return new StatusBarAssist();
+    }
+}