#region
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using System;
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using System.ComponentModel;
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using System.Drawing;
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using System.Runtime.InteropServices;
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using System.Windows.Forms;
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#endregion
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namespace CSFrameworkV5.Library.UIForm
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{
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public enum FormSize
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{
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NORMAL = 0, //正常大小
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MAX = 1 //最大化
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}
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public partial class frmBaseUI : Form
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{
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private const int WM_NCHITTEST = 0x0084;
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private const int HTLEFT = 10; //左边界
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private const int HTRIGHT = 11; //右边界
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private const int HTTOP = 12; //上边界
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private const int HTTOPLEFT = 13; //左上角
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private const int HTTOPRIGHT = 14; //右上角
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private const int HTBOTTOM = 15; //下边界
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private const int HTBOTTOMLEFT = 0x10; //左下角
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private const int HTBOTTOMRIGHT = 17; //右下角
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/// <summary>
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/// 窗口默认大小
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/// FormSize.NORMAL OR FormSize.MAX
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/// </summary>
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private FormSize defaultFormSize = FormSize.NORMAL;
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/// <summary>
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/// 是否允许最大化
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/// </summary>
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private bool maxVisible = true;
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private Point mPoint;
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/// <summary>
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/// 窗体标题
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/// </summary>
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private string titleText;
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/// <summary>
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/// 窗体标题是否显示
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/// </summary>
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private bool titleVisible = true;
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public frmBaseUI()
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{
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InitializeComponent();
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}
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[Description("窗口默认大小")]
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public FormSize DefaultFormSize
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{
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get => defaultFormSize;
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set
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{
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defaultFormSize = value;
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if (defaultFormSize == FormSize.MAX)
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{
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//防止遮挡任务栏
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MaximumSize = new Size(
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Screen.PrimaryScreen.WorkingArea.Width,
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Screen.PrimaryScreen.WorkingArea.Height);
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WindowState = FormWindowState.Maximized;
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//最大化图标切换
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}
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}
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}
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[Description("是否允许最大化")]
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public bool MaxVisible
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{
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get => maxVisible;
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set
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{
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maxVisible = value;
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if (!maxVisible)
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{
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btnEXMin.Location = new Point(btnEXMax.Location.X, 12);
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btnEXMax.Visible = false;
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}
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else
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{
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btnEXMin.Location = new Point(btnEXMax.Location.X - 20, 12);
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btnEXMax.Visible = true;
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}
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}
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}
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[Description("窗体标题")]
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public string TitleText
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{
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get => titleText;
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set
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{
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titleText = value;
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title.Text = titleText;
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}
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}
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[Description("窗体标题是否显示")]
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public bool TitleVisible
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{
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get => titleVisible;
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set
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{
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titleVisible = value;
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title.Visible = titleVisible;
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}
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}
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/// <summary>
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/// 关闭按钮事件
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void btnEXClose_ButtonClick(object sender, EventArgs e)
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{
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Close();
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}
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/// <summary>
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/// 最大化按钮事件
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void btnEXMax_ButtonClick(object sender, EventArgs e)
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{
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MaxNormalSwitch();
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}
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/// <summary>
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/// 最小化按钮事件
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void btnEXMin_ButtonClick(object sender, EventArgs e)
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{
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WindowState = FormWindowState.Minimized;
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}
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private void FormEX_Resize(object sender, EventArgs e)
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{
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Invalidate(); //使重绘
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}
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/// <summary>
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/// 最大化和正常状态切换
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/// </summary>
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private void MaxNormalSwitch()
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{
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if (WindowState ==
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FormWindowState.Maximized) //如果当前状态是最大化状态 则窗体需要恢复默认大小
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{
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WindowState = FormWindowState.Normal;
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//
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}
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else
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{
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//防止遮挡任务栏
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MaximumSize = new Size(Screen.PrimaryScreen.WorkingArea.Width,
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Screen.PrimaryScreen.WorkingArea.Height);
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WindowState = FormWindowState.Maximized;
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//最大化图标切换
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}
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Invalidate(); //使重绘
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}
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private void titleBar_DoubleClick(object sender, EventArgs e)
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{
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MaxNormalSwitch();
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}
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/// <summary>
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/// 鼠标按下标题栏
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void titleBar_MouseDown(object sender, MouseEventArgs e)
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{
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mPoint = new Point(e.X, e.Y);
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}
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/// <summary>
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/// 鼠标在移动
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/// </summary>
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/// <param name="sender"></param>
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/// <param name="e"></param>
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private void titleBar_MouseMove(object sender, MouseEventArgs e)
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{
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if (e.Button == MouseButtons.Left)
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Location = new Point(Location.X + e.X - mPoint.X,
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Location.Y + e.Y - mPoint.Y);
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}
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#region 无边框窗体移动、放大、缩小
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protected override void WndProc(ref Message m)
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{
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switch (m.Msg)
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{
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case WM_NCHITTEST:
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base.WndProc(ref m);
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var vPoint = new Point((int)m.LParam & 0xFFFF,
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((int)m.LParam >> 16) & 0xFFFF);
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vPoint = PointToClient(vPoint);
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if (vPoint.X <= 5)
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{
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if (vPoint.Y <= 5)
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m.Result = (IntPtr)HTTOPLEFT;
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else if (vPoint.Y >= ClientSize.Height - 5)
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m.Result = (IntPtr)HTBOTTOMLEFT;
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else
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m.Result = (IntPtr)HTLEFT;
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}
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else if (vPoint.X >= ClientSize.Width - 5)
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{
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if (vPoint.Y <= 5)
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m.Result = (IntPtr)HTTOPRIGHT;
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else if (vPoint.Y >= ClientSize.Height - 5)
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m.Result = (IntPtr)HTBOTTOMRIGHT;
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else
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m.Result = (IntPtr)HTRIGHT;
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}
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else if (vPoint.Y <= 5)
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{
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m.Result = (IntPtr)HTTOP;
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}
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else if (vPoint.Y >= ClientSize.Height - 5)
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{
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m.Result = (IntPtr)HTBOTTOM;
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}
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break;
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case WM_NCPAINT: //四周阴影 box shadow
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if (m_aeroEnabled)
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{
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var v = 2;
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DwmSetWindowAttribute(Handle, 2, ref v, 4);
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var margins = new MARGINS
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{
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bottomHeight = 1,
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leftWidth = 1,
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rightWidth = 1,
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topHeight = 1
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};
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DwmExtendFrameIntoClientArea(Handle, ref margins);
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}
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break;
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}
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base.WndProc(ref m);
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if (m.Msg == WM_NCHITTEST &&
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(int)m.Result == HTCLIENT) // drag the form
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m.Result = (IntPtr)HTCAPTION;
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}
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#endregion
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#region 窗体四周阴影
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[DllImport("dwmapi.dll")]
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public static extern int DwmExtendFrameIntoClientArea(IntPtr hWnd,
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ref MARGINS pMarInset);
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[DllImport("dwmapi.dll")]
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public static extern int DwmSetWindowAttribute(IntPtr hwnd, int attr,
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ref int attrValue, int attrSize);
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[DllImport("dwmapi.dll")]
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public static extern int DwmIsCompositionEnabled(ref int pfEnabled);
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private bool m_aeroEnabled; // variables for box shadow
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private const int CS_DROPSHADOW = 0x00020000;
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private const int WM_NCPAINT = 0x0085;
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private const int WM_ACTIVATEAPP = 0x001C;
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public struct MARGINS // struct for box shadow
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{
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public int leftWidth;
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public int rightWidth;
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public int topHeight;
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public int bottomHeight;
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}
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//private const int WM_NCHITTEST = 0x84; // variables for dragging the form
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private const int HTCLIENT = 0x1;
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private const int HTCAPTION = 0x2;
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protected override CreateParams CreateParams
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{
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get
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{
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m_aeroEnabled = CheckAeroEnabled();
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var cp = base.CreateParams;
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if (!m_aeroEnabled) cp.ClassStyle |= CS_DROPSHADOW;
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return cp;
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}
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}
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private bool CheckAeroEnabled()
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{
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if (Environment.OSVersion.Version.Major >= 6)
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{
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var enabled = 0;
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DwmIsCompositionEnabled(ref enabled);
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return enabled == 1 ? true : false;
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}
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return false;
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}
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#endregion
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}
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}
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