/// <summary>
/// Get the image stored at the specified path as an IPicture.
/// The PictureHolder remains responsible to dispose or release the picture as needed,
/// typically when the application exits, so the client may keep and use it indefinitely.
/// </summary>
public IPicture GetComPicture(string imagePath)
{
IPicture comPicture;
if (m_previousPictures == null)
{
m_previousPictures = new Dictionary <string, IPicture>();
}
if (m_previousPictures.TryGetValue(imagePath, out comPicture))
{
return(comPicture);
}
try
{
string actualFilePath = FileUtils.ActualFilePath(imagePath);
using (var image = Image.FromFile(actualFilePath))
{
comPicture = (IPicture)OLECvt.ToOLE_IPictureDisp(image);
}
}
catch (Exception e)
{
Debug.WriteLine("Failed to create picture from path " + imagePath + " exception: " + e.Message);
comPicture = null; // if we can't get the picture too bad.
}
m_previousPictures[imagePath] = comPicture;
return(comPicture);
}
/// <summary>
/// Get an IPicture corresponding to the specified key. If one is not known,
/// obtain it from the source image, and save it for next time. The PictureHolder
/// remains responsible for disposing or releasing the picture in either case.
/// </summary>
public IPicture GetPicture(string key, Image source)
{
IPicture comPicture;
if (m_previousPictures == null)
{
m_previousPictures = new Dictionary <string, IPicture>();
}
if (!m_previousPictures.TryGetValue(key, out comPicture))
{
comPicture = (IPicture)OLECvt.ToOLE_IPictureDisp(source);
m_previousPictures[key] = comPicture;
}
return(comPicture);
}
