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  • 无边框窗体和timer控件

    一、无边框窗体

    1、控制按钮如何制作
    就是放置可以点击的控件,不局限于使用按钮或是什么别的,
    只要放置的控件可以点击能触发点击事件就可以了

    做的好看一点,就是鼠标移入(pictureBox1_MouseEnter),移出(pictureBox1_MouseLeave),按下( pictureBox1_MouseDown)三个事件会让按钮改变样式

    如何获取图片的相对路径:
    Application.StartupPath + "\..\..\images\btn_close_highlight.png"

    ..文件夹名称... 向上翻一个文件夹

    2、如何让窗体动起来
    调用窗体移动的API

    如果有其它控件覆盖了窗体,那么写好鼠标按下的事件委托就可以了

    复制代码
    //窗体移动API
    [DllImport("user32.dll")]
    public static extern bool ReleaseCapture();
    [DllImport("user32.dll")]
    public static extern bool SendMessage(IntPtr hwnd, int wMsg, int wParam, int IParam);
    public const int WM_SYSCOMMAND = 0x0112;
    public const int SC_MOVE = 0xF010;
    public const int HTCAPTION = 0x0002;
    [DllImport("user32")]
    private static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, IntPtr lParam);
    private const int WM_SETREDRAW = 0xB;
    
     
    
    private void Form1_MouseDown(object sender, MouseEventArgs e)
    {
    if (this.WindowState == FormWindowState.Normal)
    {
    ReleaseCapture();
    SendMessage(this.Handle, WM_SYSCOMMAND, SC_MOVE + HTCAPTION, 0);
    }
    }
    复制代码
    

      自写方法:

       Point mouseOff;//鼠标移动位置变量
            bool leftFlag;//标签是否为左键
    
            private void Form1_MouseDown(object sender, MouseEventArgs e)
            {
                if (e.Button == MouseButtons.Left)
                {
                    mouseOff = new Point(-e.X, -e.Y); //得到变量的值
                    leftFlag = true;                  //点击左键按下时标注为true;
                }
            }
    
            private void Form1_MouseMove(object sender, MouseEventArgs e)
            {
                if (leftFlag)
                {
                    Point mouseSet = Control.MousePosition;
                    mouseSet.Offset(mouseOff.X, mouseOff.Y);  //设置移动后的位置
                    Location = mouseSet;
                }
            }
    
            private void Form1_MouseUp(object sender, MouseEventArgs e)
            {
                if (leftFlag)
                {
                    leftFlag = false;//释放鼠标后标注为false;
                }
            }
    

      

    3、如何让窗体有阴影

    复制代码
    private const int CS_DropSHADOW = 0x20000;
    private const int GCL_STYLE = (-26);
    
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern int SetClassLong(IntPtr hwnd, int nIndex, int dwNewLong);
    [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern int GetClassLong(IntPtr hwnd, int nIndex);
    
    private void SetShadow()//在构造函数中引用
    {
    SetClassLong(this.Handle, GCL_STYLE, GetClassLong(this.Handle, GCL_STYLE) | CS_DropSHADOW); 
    }
    复制代码
    

      

    4.调整窗体大小

    复制代码
    const int HTLEFT = 10;
    const int HTRIGHT = 11;
    const int HTTOP = 12;
    const int HTTOPLEFT = 13;
    const int HTTOPRIGHT = 14;
    const int HTBOTTOM = 15;
    const int HTBOTTOMLEFT = 0x10;
    const int HTBOTTOMRIGHT = 17;
    
    protected override void WndProc(ref Message m)
    {
    switch (m.Msg)
    {
    case 0x0084:
    base.WndProc(ref m);
    Point vPoint = new Point((int)m.LParam & 0xFFFF,
    (int)m.LParam >> 16 & 0xFFFF);
    vPoint = PointToClient(vPoint);
    if (vPoint.X <= 5)
    if (vPoint.Y <= 5)
    m.Result = (IntPtr)HTTOPLEFT;
    else if (vPoint.Y >= ClientSize.Height - 5)
    m.Result = (IntPtr)HTBOTTOMLEFT;
    else m.Result = (IntPtr)HTLEFT;
    else if (vPoint.X >= ClientSize.Width - 5)
    if (vPoint.Y <= 5)
    m.Result = (IntPtr)HTTOPRIGHT;
    else if (vPoint.Y >= ClientSize.Height - 5)
    m.Result = (IntPtr)HTBOTTOMRIGHT;
    else m.Result = (IntPtr)HTRIGHT;
    else if (vPoint.Y <= 5)
    m.Result = (IntPtr)HTTOP;
    else if (vPoint.Y >= ClientSize.Height - 5)
    m.Result = (IntPtr)HTBOTTOM;
    break;
    case 0x0201://鼠标左键按下的消息 
    m.Msg = 0x00A1;//更改消息为非客户区按下鼠标 
    m.LParam = IntPtr.Zero;//默认值 
    m.WParam = new IntPtr(2);//鼠标放在标题栏内 
    base.WndProc(ref m);
    break; 
    default:
    base.WndProc(ref m);
    break;
    }

    二、后台创建控件

    例:

    复制代码
    //用户输入一个整数,点击此按钮
    //创建相应的按钮,数量等于用户输入的整数,名字从1开始,全部放放置到下面的Panel里
    //1.获取用户输入的数字
    int num =Convert.ToInt32(textBox1.Text);
    //创建按钮
    Button bt=new Botton();
    for(int i=0;i<=num;i++)
    {
    bt.Text=i.tostring()
    //3.如何放到Panel里去
    flowLayoutPanel1.Controls.Add(btn);

    }
    复制代码
    除按钮以外后台还可以创建各种各样的控件

    ------------------------------------

    一、用户控件
    是由其它控件所组成的一种用户自定义控件
    用户控件的主体与Panel相似,但是它却又是独立的一个类

    注意:所有内部的控件访问权限都要修改


    二、timer控件 简单通讯
    timer在组件里:
    Enabled - 此控件是否启用
    Interval - 间隔时间,毫秒
    Tick事件 - 间隔指定时间后要执行的代码段

    timer就是个线程,这个线程默认可以跨线程访问对象

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  • 原文地址:https://www.cnblogs.com/xiaobao5161/p/5916996.html
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