Dispose method in PdfPage and using(page) in Test.Console, and also PdfPage.HasTransparency

PDFiumSharp.sln

@@ -3,7 +3,7 @@ Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
 VisualStudioVersion = 15.0.26228.12
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PDFiumSharp", "PDFiumSharp\PDFiumSharp.csproj", "{782D0C5A-2A13-480C-AF88-6DADC726566E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "PDFiumSharp", "PDFiumSharp\PDFiumSharp.csproj", "{782D0C5A-2A13-480C-AF88-6DADC726566E}"
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PDFiumSharp.GdiPlus", "PDFiumSharp.GdiPlus\PDFiumSharp.GdiPlus.csproj", "{2D52FEFF-2445-4446-A4A0-65DCEBD639AA}"
 EndProject
@@ -80,4 +80,7 @@ Global
 		{C07538E4-238C-42AC-BC19-8AFA66BD6BC2} = {488D350A-7DF4-4E38-9398-409C89A2A9E6}
 		{AE8ED031-D549-449C-9273-5F0369BF7E56} = {488D350A-7DF4-4E38-9398-409C89A2A9E6}
 	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {CF9ACF66-BB1D-4F64-9F8F-80249BC60195}
+	EndGlobalSection
 EndGlobal

PDFiumSharp/PDFium.cs

@@ -88,17 +88,19 @@ public static FPDF_DOCUMENT FPDF_LoadDocument(byte[] data, int index = 0, int co
 			return FPDF_LoadMemDocument(ref data[index], count, password);
 		}
 
-		/// <summary>
-		/// Loads a PDF document from '<paramref name="count"/>' bytes read from a stream.
-		/// </summary>
-		/// <param name="count">
-		/// The number of bytes to read from the <paramref name="stream"/>.
-		/// If the value is equal to or smaller than 0, the stream is read to the end.
-		/// </param>
-		public static FPDF_DOCUMENT FPDF_LoadDocument(Stream stream, int count = 0, string password = null)
-		{
-			return FPDF_LoadCustomDocument(FPDF_FILEREAD.FromStream(stream, count), password);
-		}
+        /// <summary>
+        /// Loads a PDF document from '<paramref name="count"/>' bytes read from a stream.
+        /// </summary>
+        /// <param name="fileRead"></param>
+        /// <param name="count">
+        /// The number of bytes to read from the <paramref name="stream"/>.
+        /// If the value is equal to or smaller than 0, the stream is read to the end.
+        /// </param>
+        /// <param name="stream"></param>
+        public static FPDF_DOCUMENT FPDF_LoadDocument(Stream stream, FPDF_FILEREAD fileRead, int count = 0, string password = null)
+        {
+            return FPDF_LoadCustomDocument(fileRead, password);
+        }
 
 		//public static string FPDF_VIEWERREF_GetName(FPDF_DOCUMENT document, string key)
 		//{

PDFiumSharp/PDFium.tt

@@ -807,7 +807,7 @@ foreach (var import in Imports)
 	if (returnType == "void")
 	{
 // --------------------------------------------------------- Code End ----------------------------------------------------- #>
-			if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
+			if (RuntimeInformation.ProcessArchitecture == Architecture.X64 || (RuntimeInformation.ProcessArchitecture == Architecture.X86 && IntPtr.Size == 8))
 				lock(_lock) { PlatformInvoke.<#=name#>_x64(<#=args#>); }
 			else if (RuntimeInformation.ProcessArchitecture == Architecture.X86)
 				lock(_lock) { PlatformInvoke.<#=name#>_x86(<#=args#>); }
@@ -818,7 +818,7 @@ foreach (var import in Imports)
 	else
 	{
 // --------------------------------------------------------- Code End ----------------------------------------------------- #>
-			if (RuntimeInformation.ProcessArchitecture == Architecture.X64)
+			if (RuntimeInformation.ProcessArchitecture == Architecture.X64 || (RuntimeInformation.ProcessArchitecture == Architecture.X86 && IntPtr.Size == 8))
 				lock(_lock) { return PlatformInvoke.<#=name#>_x64(<#=args#>); }
 			else if (RuntimeInformation.ProcessArchitecture == Architecture.X86)
 				lock(_lock) { return PlatformInvoke.<#=name#>_x86(<#=args#>); }

PDFiumSharp/PdfDocument.cs

@@ -23,7 +23,7 @@ public sealed class PdfDocument : NativeWrapper<FPDF_DOCUMENT>
 
 		public PdfDestinationCollection Destinations { get; }
 
-		/// <summary>
+        /// <summary>
 		/// Gets the PDF file version. File version: 14 for 1.4, 15 for 1.5, ...
 		/// </summary>
 		public int FileVersion { get { PDFium.FPDF_GetFileVersion(Handle, out int fileVersion); return fileVersion; } }
@@ -91,16 +91,19 @@ public PdfDocument(string fileName, string password = null)
 		public PdfDocument(byte[] data, int index = 0, int count = -1, string password = null)
 			: this(PDFium.FPDF_LoadDocument(data, index, count, password)) { }
 
-		/// <summary>
-		/// Loads a <see cref="PdfDocument"/> from '<paramref name="count"/>' bytes read from a <paramref name="stream"/>.
-		/// <see cref="Close"/> must be called in order to free unmanaged resources.
-		/// </summary>
-		/// <param name="count">
-		/// The number of bytes to read from the <paramref name="stream"/>.
-		/// If the value is equal to or smaller than 0, the stream is read to the end.
-		/// </param>
-		public PdfDocument(Stream stream, int count = 0, string password = null)
-			: this(PDFium.FPDF_LoadDocument(stream, count, password)) { }
+        /// <summary>
+        /// Loads a <see cref="PdfDocument"/> from '<paramref name="count"/>' bytes read from a <paramref name="stream"/>.
+        /// <see cref="Close"/> must be called in order to free unmanaged resources.
+        /// </summary>
+        /// <param name="stream"></param>
+        /// <param name="fileRead"></param>
+        /// <param name="count">
+        /// The number of bytes to read from the <paramref name="stream"/>.
+        /// If the value is equal to or smaller than 0, the stream is read to the end.
+        /// </param>
+        /// <param name="password"></param>
+        public PdfDocument(Stream stream, FPDF_FILEREAD fileRead, int count = 0, string password = null)
+            : this(PDFium.FPDF_LoadDocument(stream, fileRead, count, password)) { }
 
 		/// <summary>
 		/// Closes the <see cref="PdfDocument"/> and frees unmanaged resources.

PDFiumSharp/PdfPage.cs

@@ -50,10 +50,15 @@ public PageOrientations Orientation
 			set => PDFium.FPDFPage_SetRotation(Handle, value);
 		}
 
-		/// <summary>
-		/// Gets the zero-based index of the page in the <see cref="Document"/>
-		/// </summary>
-		public int Index { get; internal set; } = -1;
+        /// <summary>
+        /// Get the transparency of the page
+        /// </summary>
+        public bool HasTransparency => PDFium.FPDFPage_HasTransparency(Handle);
+
+        /// <summary>
+        /// Gets the zero-based index of the page in the <see cref="Document"/>
+        /// </summary>
+        public int Index { get; internal set; } = -1;
 
 		/// <summary>
 		/// Gets the <see cref="PdfDocument"/> which contains the page.
@@ -116,7 +121,9 @@ public void Render(PDFiumBitmap renderTarget, PageOrientations orientation = Pag
 
 		public FlattenResults Flatten(FlattenFlags flags) => PDFium.FPDFPage_Flatten(Handle, flags);
 
-		protected override void Dispose(FPDF_PAGE handle)
+        public void Dispose() => ((IDisposable)this).Dispose();
+
+        protected override void Dispose(FPDF_PAGE handle)
 		{
 			PDFium.FPDF_ClosePage(handle);
 		}

PDFiumSharp/Types/FPDF_COLOR.cs

@@ -25,7 +25,7 @@ public struct FPDF_COLOR
 		readonly uint _argb;
 
 		public byte A => _a;
-		public byte R => _b;
+		public byte R => _r;
 		public byte G => _g;
 		public byte B => _b;
 		public int ARGB => unchecked((int)_argb);

Samples/Test.Console/Program.cs

@@ -16,14 +16,16 @@ static void Main(string[] args)
 			{
 				int i = 0;
 				foreach (var page in doc.Pages)
-				{
-					using (var bitmap = new PDFiumBitmap((int)page.Width, (int)page.Height, true))
-					using (var stream = new FileStream($"{i++}.bmp", FileMode.Create))
-					{
-						page.Render(bitmap);
-						bitmap.Save(stream);
-					}
-				}
+                    using (page)
+                    {
+                        using (var bitmap = new PDFiumBitmap((int)page.Width, (int)page.Height, true))
+                        using (var stream = new FileStream($"{i++}.bmp", FileMode.Create))
+                        {
+                            page.Render(bitmap);
+                            bitmap.Save(stream);
+                        }
+                    }
+
 			}
 			Console.ReadKey();
 		}