c# 使form窗体在系统中获得焦点
使用命名空间System.Runtime.InteropServices
using System.Runtime.InteropServices;
调用API方法
/// <summary> /// 获得当前活动窗体的句柄 /// </summary> /// <returns>返回窗体句柄</returns> [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true)] public static extern IntPtr GetForegroundWindow(); /// <summary> /// 设置此窗体句柄的窗体为活动窗体 /// </summary> /// <param name="hWnd">指定窗口句柄</param> /// <returns>返回设置结果</returns> [DllImport("user32.dll", EntryPoint = "SetForegroundWindow")] public static extern bool SetForegroundWindow(IntPtr hWnd);
设置
if (!Focused) { GetForegroundWindow();// 此函数返回一个当前活动窗体的句柄 SetForegroundWindow(this.Handle);// 设置自己为活动窗体 Focus();//软件获取焦点 }