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
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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