- index
- The 1-based index of the page from image to replace. If index is equal to
-1
, the last page in the image will be replaced.
- image
- The source image to replace with.
Visual Basic (Declaration) | |
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Public Sub ReplacePage( _ ByVal index As Integer, _ ByVal image As RasterImage _ ) |
Visual Basic (Usage) | Copy Code |
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Dim instance As RasterImage Dim index As Integer Dim image As RasterImage instance.ReplacePage(index, image) |
C# | |
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public void ReplacePage( int index, RasterImage image ) |
C++/CLI | |
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public: void ReplacePage( int index, RasterImage^ image ) |
Parameters
- index
- The 1-based index of the page from image to replace. If index is equal to
-1
, the last page in the image will be replaced. - image
- The source image to replace with.
Visual Basic | Copy Code |
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Public Sub TestReplacePage() ' Create a mult-page image from the following files: Dim pageFileNames() As String = _ { _ Path.Combine(LEAD_VARS.ImagesDir, "Sample1.cmp"), _ Path.Combine(LEAD_VARS.ImagesDir, "Sample2.cmp"), _ Path.Combine(LEAD_VARS.ImagesDir, "Sample3.cmp"), _ Path.Combine(LEAD_VARS.ImagesDir, "Sample4.cmp") _ } Dim newPageFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp") Dim codecs As New RasterCodecs() Dim image As RasterImage = Nothing For Each pageFileName As String In pageFileNames Dim page As RasterImage = codecs.Load(pageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1) If Not IsNothing(image) Then image.AddPage(page) Else image = page End If Next ' Show the image now ShowMultiPageImageInfo("Original image", image) ' Load the page to replace Dim newPage As RasterImage = codecs.Load(newPageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1) Console.WriteLine("Loaded a new page of size {0} by {1}", newPage.Width, newPage.Height) ' Replace the second page on the image with this page image.ReplacePage(2, newPage) ' Show the list now ShowMultiPageImageInfo("New image after replacing page number 2", image) image.Dispose() codecs.Dispose() End Sub Private Shared Sub ShowMultiPageImageInfo(ByVal message As String, ByVal image As RasterImage) Console.WriteLine(message) Dim savePage As Integer = image.Page For i As Integer = 1 To image.PageCount image.Page = i Console.WriteLine(" {0}: Size {1} by {2} pixels", i, image.Width, image.Height) Next image.Page = savePage Console.WriteLine("----------------") End Sub Public NotInheritable Class LEAD_VARS Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images" End Class |
C# | Copy Code |
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public void TestReplacePage() { // Create a mult-page image from the following files: string[] pageFileNames = { Path.Combine(LEAD_VARS.ImagesDir,"Sample1.cmp"), Path.Combine(LEAD_VARS.ImagesDir,"Sample2.cmp"), Path.Combine(LEAD_VARS.ImagesDir,"Sample3.cmp"), Path.Combine(LEAD_VARS.ImagesDir,"Sample4.cmp") }; string newPageFileName = Path.Combine(LEAD_VARS.ImagesDir,"Image1.cmp"); RasterCodecs codecs = new RasterCodecs(); RasterImage image = null; foreach(string pageFileName in pageFileNames) { RasterImage page = codecs.Load(pageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1); if(image != null) { image.AddPage(page); } else { image = page; } } // Show the image now ShowMultiPageImageInfo("Original image", image); // Load the page to replace RasterImage newPage = codecs.Load(newPageFileName, 0, CodecsLoadByteOrder.BgrOrGray, 1, 1); Console.WriteLine("Loaded a new page of size {0} by {1}", newPage.Width, newPage.Height); // Replace the second page on the image with this page image.ReplacePage(2, newPage); // Show the list now ShowMultiPageImageInfo("New image after replacing page number 2", image); image.Dispose(); codecs.Dispose(); } private static void ShowMultiPageImageInfo(string message, RasterImage image) { Console.WriteLine(message); int savePage = image.Page; for(int i = 1; i <= image.PageCount; i++) { image.Page = i; Console.WriteLine(" {0}: Size {1} by {2} pixels", i, image.Width, image.Height); } image.Page = savePage; Console.WriteLine("----------------"); } static class LEAD_VARS { public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images"; } |
SilverlightCSharp | Copy Code |
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SilverlightVB | Copy Code |
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This method pulls the current active page of image and inserts into the current RasterImage object at page number = index. The number of pages in image is decremented by one, if image had only one page prior to calling this method, then the image object is disposed of and should not be used afterwards.
The RasterImage object can hold multiple pages with different sizes. The AddPage, AddPages, InsertPage and InsertPages methods allows adding new pages to an existing RasterImage.
The RemovePageAt, RemovePages and RemoveAllPages methods allows removing existing pages from a RasterImage object.
The ReplacePage and ReplacePages methods allows replace existing pages in a RasterImage object.
The PageCount property holds the total number of pages in a RasterImage object while the Page property allows you to change the current active page.
The current active page (The page indicated by the Page property) is used by default when accessing the data of a RasterImage object unless otherwise indicated.
Target Platforms: Silverlight, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only), Windows Phone 7