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c#实现Form窗体始终在桌面最前端显示

2024-07-08 22:44:17   218人阅读

方法一：

//调用API[System.Runtime.InteropServices.DllImport("user32", CharSet = System.Runtime.InteropServices.CharSet.Auto, ExactSpelling = true)]public static extern IntPtr GetFocus(); //获得本窗体的句柄[System.Runtime.InteropServices.DllImport("user32", EntryPoint = "SetForegroundWindow")]public static extern bool SetFocus(IntPtr hWnd);//设置此窗体为活动窗体// 定义变量,句柄类型public IntPtr han;private void Form1_Load(object sender, EventArgs e){//在窗体加载的时候给变量赋值,即将当前窗体的句柄赋给变量han = this.Handle;}private void timer1_Tick(object sender, EventArgs e){// 加载一个定时器控件,验证当前WINDOWS句柄是否和本窗体的句柄一样,如果不一样,则激活本窗体if (han != GetFocus()){SetFocus(han);}this.WindowState = FormWindowState.Normal;}

 

方法二：

[System.Runtime.InteropServices.DllImport("user32")]private static extern IntPtr GetActiveWindow();//获取当前窗体的活动状态// 判断当前窗口是否处于活动状态的方法private bool ThisIsActive(){ return (GetActiveWindow() == this.Handle);}private void timer1_Tick(object sender, EventArgs e){if (!ThisIsActive()){this.Activate();}this.WindowState = FormWindowState.Normal;}

 

方法三

[DllImport("user32")]    private    static    extern    IntPtr    FindWindow(string    lpClassName,string    lpWindowName);         [DllImport("user32")]    private    static    extern    IntPtr    SetParent(IntPtr    hWndChild,    IntPtr    hWndNewParent);         //在窗体On_Load事件中添加（Santos的代码）：    IntPtr    hDeskTop=FindWindow("Progman",    "Program    Manager");    SetParent(this.Handle,hDeskTop);

 































        

            
                
                  
                
                

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