275 lines
9.3 KiB
C#
275 lines
9.3 KiB
C#
using System;
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using System.Drawing;
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using System.Windows.Forms;
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namespace HL_FristAidPlatform_Public.Forms
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{
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public partial class FrmAnchor : Form, IMessageFilter
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{
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/// <summary>
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/// The m parent control
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/// </summary>
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private Control m_parentControl = null;
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/// <summary>
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/// The BLN down
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/// </summary>
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private bool blnDown = true;
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/// <summary>
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/// The m size
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/// </summary>
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private Size m_size;
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/// <summary>
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/// The m deviation
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/// </summary>
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private Point? m_deviation;
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/// <summary>
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/// The m is not focus
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/// </summary>
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private bool m_isNotFocus = true;
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#region 构造函数
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/// <summary>
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/// </summary>
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/// <param name="parentControl">父控件</param>
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/// <param name="childControl">子控件</param>
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/// <param name="deviation">偏移</param>
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/// <param name="isNotFocus">是否无焦点窗体</param>
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public FrmAnchor(Control parentControl, Control childControl, Point? deviation = null, bool isNotFocus = true)
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{
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m_isNotFocus = isNotFocus;
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m_parentControl = parentControl;
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InitializeComponent();
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this.Size = childControl.Size;
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this.HandleCreated += FrmDownBoard_HandleCreated;
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this.HandleDestroyed += FrmDownBoard_HandleDestroyed;
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this.Controls.Add(childControl);
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childControl.Dock = DockStyle.Fill;
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m_size = childControl.Size;
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m_deviation = deviation;
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if (parentControl.FindForm() != null)
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{
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Form frmP = parentControl.FindForm();
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if (!frmP.IsDisposed)
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{
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frmP.LocationChanged += frmP_LocationChanged;
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}
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}
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parentControl.LocationChanged += frmP_LocationChanged;
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}
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/// <summary>
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/// Initializes a new instance of the <see cref="FrmAnchor" /> class.
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/// </summary>
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/// <param name="parentControl">The parent control.</param>
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/// <param name="size">The size.</param>
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/// <param name="deviation">The deviation.</param>
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/// <param name="isNotFocus">if set to <c>true</c> [is not focus].</param>
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public FrmAnchor(Control parentControl, Size size, Point? deviation = null, bool isNotFocus = true)
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{
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m_isNotFocus = isNotFocus;
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m_parentControl = parentControl;
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InitializeComponent();
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this.Size = size;
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this.HandleCreated += FrmDownBoard_HandleCreated;
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this.HandleDestroyed += FrmDownBoard_HandleDestroyed;
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m_size = size;
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m_deviation = deviation;
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}
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/// <summary>
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/// Handles the LocationChanged event of the frmP control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void frmP_LocationChanged(object sender, EventArgs e)
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{
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this.Hide();
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}
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#endregion 构造函数
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/// <summary>
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/// Handles the HandleDestroyed event of the FrmDownBoard control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void FrmDownBoard_HandleDestroyed(object sender, EventArgs e)
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{
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Application.RemoveMessageFilter(this);
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}
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/// <summary>
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/// Handles the HandleCreated event of the FrmDownBoard control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void FrmDownBoard_HandleCreated(object sender, EventArgs e)
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{
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Application.AddMessageFilter(this);
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}
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#region 无焦点窗体
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/// <summary>
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/// Sets the active window.
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/// </summary>
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/// <param name="handle">The handle.</param>
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/// <returns>IntPtr.</returns>
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[System.Runtime.InteropServices.DllImport("user32.dll")]
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private static extern IntPtr SetActiveWindow(IntPtr handle);
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/// <summary>
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/// The wm activate
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/// </summary>
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private const int WM_ACTIVATE = 0x006;
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/// <summary>
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/// The wm activateapp
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/// </summary>
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private const int WM_ACTIVATEAPP = 0x01C;
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/// <summary>
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/// The wm ncactivate
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/// </summary>
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private const int WM_NCACTIVATE = 0x086;
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/// <summary>
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/// The wa inactive
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/// </summary>
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private const int WA_INACTIVE = 0;
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/// <summary>
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/// The wm mouseactivate
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/// </summary>
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private const int WM_MOUSEACTIVATE = 0x21;
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/// <summary>
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/// The ma noactivate
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/// </summary>
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private const int MA_NOACTIVATE = 3;
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/// <summary>
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/// WNDs the proc.
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/// </summary>
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/// <param name="m">要处理的 Windows <see cref="T:System.Windows.Forms.Message" />。</param>
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protected override void WndProc(ref Message m)
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{
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if (m_isNotFocus)
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{
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if (m.Msg == WM_MOUSEACTIVATE)
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{
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m.Result = new IntPtr(MA_NOACTIVATE);
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return;
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}
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else if (m.Msg == WM_NCACTIVATE)
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{
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if (((int)m.WParam & 0xFFFF) != WA_INACTIVE)
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{
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if (m.LParam != IntPtr.Zero)
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{
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SetActiveWindow(m.LParam);
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}
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else
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{
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SetActiveWindow(IntPtr.Zero);
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}
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}
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}
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}
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base.WndProc(ref m);
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}
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#endregion 无焦点窗体
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/// <summary>
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/// 在调度消息之前将其筛选出来。
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/// </summary>
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/// <param name="m">要调度的消息。无法修改此消息。</param>
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/// <returns>如果筛选消息并禁止消息被调度，则为 true；如果允许消息继续到达下一个筛选器或控件，则为 false。</returns>
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public bool PreFilterMessage(ref Message m)
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{
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if (m.Msg != 0x0201 || this.Visible == false)
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return false;
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var pt = this.PointToClient(MousePosition);
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this.Visible = this.ClientRectangle.Contains(pt);
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return false;
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}
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/// <summary>
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/// Handles the Load event of the FrmAnchor control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void FrmAnchor_Load(object sender, EventArgs e)
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{
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}
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/// <summary>
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/// Handles the VisibleChanged event of the FrmAnchor control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void FrmAnchor_VisibleChanged(object sender, EventArgs e)
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{
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timer1.Enabled = this.Visible;
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if (this.Visible)
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{
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Screen currentScreen = Screen.FromControl(m_parentControl);
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Point p = m_parentControl.Parent.PointToScreen(m_parentControl.Location);
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int intX = 0;
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int intY = 0;
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if (p.Y + m_parentControl.Height + m_size.Height > currentScreen.Bounds.Height)
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{
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intY = p.Y - m_size.Height - 1;
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blnDown = false;
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}
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else
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{
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intY = p.Y + m_parentControl.Height + 1;
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blnDown = true;
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}
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if (p.X + m_size.Width > currentScreen.Bounds.Width)
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{
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intX = currentScreen.Bounds.Width - m_size.Width;
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}
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else
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{
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intX = p.X;
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}
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if (m_deviation.HasValue)
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{
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intX += m_deviation.Value.X;
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intY += m_deviation.Value.Y;
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}
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this.Location = ControlHelper.GetScreenLocation(currentScreen, intX, intY);
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}
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}
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/// <summary>
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/// Handles the Tick event of the timer1 control.
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/// </summary>
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/// <param name="sender">The source of the event.</param>
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/// <param name="e">The <see cref="EventArgs" /> instance containing the event data.</param>
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private void timer1_Tick(object sender, EventArgs e)
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{
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if (this.Owner != null)
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{
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Form frm = this.Owner as Form;
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IntPtr _ptr = ControlHelper.GetForegroundWindow();
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if (_ptr != frm.Handle && _ptr != this.Handle)
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{
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this.Hide();
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}
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}
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}
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}
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} |