LoadImage Event (original) (raw)
Summary
Occurs during the file load process to provide functionality for manually handling the output image data or monitoring a progress status.
Syntax
synchronized public void addLoadImageListener(CodecsLoadImageListener listener)
synchronized public void removeLoadImageListener(CodecsLoadImageListener listener)
public:
event EventHandler<CodecsLoadImageEventArgs^>^ LoadImage
def LoadImage(sender,e): # sender: RasterCodecs e: CodecsLoadImageEventArgs Event Data
The event handler receives an argument of type CodecsLoadImageEventArgs containing data related to this event. The following CodecsLoadImageEventArgs properties provide information specific to this event.
| Property | Description |
|---|---|
| Buffer | Gets the memory buffer containing one or more lines of output image data. |
Example
using Leadtools;
using Leadtools.Codecs;
using Leadtools.ImageProcessing;
using Leadtools.ImageProcessing.Color;
using Leadtools.Svg;
private void Codecs_LoadImage(object sender, CodecsLoadImageEventArgs e)
{
e.Cancel = true;
// get all properties for the CodecsLoadImageEventArgs class.
Debug.WriteLine("File name is: {0}", e.FileName);
Debug.WriteLine("The Image width and height is: {0},{1}", e.Image.Width, e.Image.Height);
Debug.WriteLine("The Length of the buffer is: {0}", e.Buffer.Length);
Debug.WriteLine("The current row in the first line of the buffer is: {0}", e.Row);
Debug.WriteLine("The number of lines in the buffer is: {0}", e.Lines);
if (e.OffsetValid)
{
Debug.WriteLine("Offset count is : {0}", e.OffsetCount);
Debug.WriteLine("Offset value is : {0}", e.Offset);
}
if (e.TileValid)
{
LeadRect rect = e.Tile;
Debug.WriteLine("Tile Dimension ({0},{1},{2},{3)}", rect.X, rect.Y, rect.Width, rect.Height);
}
Debug.WriteLine("Image p number: {0}", e.ImagePage);
Debug.WriteLine("First page number: {0}", e.FirstPage);
Debug.WriteLine("Current page number: {0}", e.Page);
Debug.WriteLine("Last page number: {0}", e.LastPage);
Debug.WriteLine("Page percent: {0}%", e.PagePercent);
Debug.WriteLine("Total percent: {0}%", e.TotalPercent);
Debug.WriteLine("Flags = {0}", e.Flags);
System.IO.Stream loadStream = e.Stream;
CodecsImageInfo info = e.Info;
e.Cancel = false;
}
public void LoadImageExample()
{
RasterCodecs codecs = new RasterCodecs();
codecs.LoadImage += new EventHandler<CodecsLoadImageEventArgs>(Codecs_LoadImage);
RasterImage image = codecs.Load(Path.Combine(LEAD_VARS.ImagesDir, "Image1.cmp"));
codecs.LoadImage -= new EventHandler<CodecsLoadImageEventArgs>(Codecs_LoadImage);
// Clean up
codecs.Dispose();
image.Dispose();
}
static class LEAD_VARS
{
public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";
}
Leadtools.Codecs Assembly
CompactFile(Stream,Stream,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(Stream,Stream,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method
CompactFile(string,string,int,int,bool,int,int,bool,int,CodecsSavePageMode,bool,bool) Method
CompactFile(string,string,int,int,bool,long,int,bool,long,CodecsSavePageMode,bool,bool,bool) Method