DotNet 4.8.1 build of DotNetBar

2025-02-07 10:35:23 -05:00
parent 33439b63a0
commit 6b0a5d60f4
2609 changed files with 989814 additions and 7 deletions
--- a/Code/HTMLHelp.cs
+++ b/Code/HTMLHelp.cs
@@ -0,0 +1,102 @@
+using System;
+using System.Windows.Forms;
+using System.Runtime.InteropServices;
+using System.IO;
+
+namespace DevComponents.DotNetBar
+{
+	/// <summary>
+	/// Summary description for HTMLHelp.
+	/// </summary>
+	internal class HTMLHelp
+	{
+		#region API_Declaration
+		// HH_DISPLAY_SEARCH Command Related Structure
+		[StructLayout(LayoutKind.Sequential)]
+			public struct tagHH_FTS_QUERY
+		{
+			long cbStruct;
+			long fUniCodeStrings;
+			string pszSearchQuery;
+			long iProximity;
+			long fStemmedSearch;
+			long fTitleOnly;
+			long fExecute;
+			string pszWindow;
+		}
+		[DllImport("hhctrl.ocx",SetLastError=true, CharSet=CharSet.Ansi, EntryPoint="HtmlHelpA")]
+		private static extern IntPtr HtmlHelp(IntPtr hwnd, string lpHelpFile, int wCommand, int dwData);
+		[DllImport("hhctrl.ocx",SetLastError=true, CharSet=CharSet.Auto, EntryPoint="HtmlHelp")]
+        private static extern IntPtr HTMLHelpFtsQuery (IntPtr hwnd, string lpHelpFile, int wCommand, ref tagHH_FTS_QUERY dwData );
+        private const int HH_DISPLAY_TOPIC = 0x0;
+        private const int HH_DISPLAY_TOC = 0x1;
+        private const int HH_DISPLAY_INDEX = 0x2;
+        private const int HH_DISPLAY_SEARCH = 0x3;
+        private const int HH_HELP_CONTEXT = 0xF;   // display mapped numeric value in dwData
+
+		[DllImport("user32")]
+		private static extern bool PostMessage(IntPtr hWnd, int Msg, int wParam, int lParam);
+		[DllImport("user32")]
+		private static extern bool IsWindow(IntPtr hWnd);
+
+		public const int WM_CLOSE=0x10;
+
+        #endregion
+		
+		private Control m_ParentWindow=null;
+		private string m_HelpFile="";
+		private IntPtr m_HtmlHelpWindowHandle=IntPtr.Zero;
+
+		public HTMLHelp()
+		{}
+		public HTMLHelp(Control parent, string helpfile)
+		{
+			m_ParentWindow=parent;
+			m_HelpFile=helpfile;
+		}
+		public Control Parent
+		{
+			get {return m_ParentWindow;}
+			set {m_ParentWindow=value;}
+		}
+		public string HelpFile
+		{
+			get {return m_HelpFile;}
+			set {m_HelpFile=value;}
+		}
+
+		public void ShowContents()
+		{
+			// Display Table Of Contents tab in HTML Help
+			if(File.Exists(m_HelpFile))
+				m_HtmlHelpWindowHandle=HtmlHelp(m_ParentWindow.Handle,m_HelpFile,HH_DISPLAY_TOC,0);
+			else
+				throw new InvalidOperationException("Help file could not be found.");
+		}
+
+		public void ShowIndex()
+		{
+			// Display Table Of Contents tab in HTML Help
+			if(File.Exists(m_HelpFile))
+				m_HtmlHelpWindowHandle=HtmlHelp(m_ParentWindow.Handle,m_HelpFile,HH_DISPLAY_INDEX,0);
+			else
+				throw new InvalidOperationException("Help file could not be found.");
+		}
+
+		public void ShowSearch()
+		{
+			// Display Table Of Contents tab in HTML Help
+			if(File.Exists(m_HelpFile))
+				m_HtmlHelpWindowHandle=HtmlHelp(m_ParentWindow.Handle,m_HelpFile,HH_DISPLAY_SEARCH,0);
+			else
+				throw new InvalidOperationException("Help file could not be found.");
+		}
+
+		public void CloseHelpWindow()
+		{
+			if(m_HtmlHelpWindowHandle!=IntPtr.Zero && IsWindow(m_HtmlHelpWindowHandle))
+				PostMessage(m_HtmlHelpWindowHandle,WM_CLOSE,0,0);
+			m_HtmlHelpWindowHandle=IntPtr.Zero;
+		}
+	}
+}