ZedGraph doesn't dispose emf file after create it

Question

I have this code below:

static internal bool SaveEnhMetafileToFile(Metafile mf, string fileName)
{
  bool bResult = false;
    IntPtr hEMF;
    hEMF = mf.GetHenhmetafile(); // invalidates mf 
    if (!hEMF.Equals(new IntPtr(0)))
    {
        StringBuilder tempName = new StringBuilder(fileName);
        CopyEnhMetaFile(hEMF, tempName);
        DeleteEnhMetaFile(hEMF);

   }
    return bResult;
}

When CopyEnhMetaFile(hEMF, tempName); is called, the picture is created but after calling DeleteEnhMetaFile(hEMF); function I cannot delete the picture because it is used by my program (vshost.exe). The program is created in C#

Is this the reason : http://stackoverflow.com/questions/14869578/copyenhmetafile-is-not-releasing-the-handle-even-if-deleteenhmetafile-is-cal — PaulF, Oct 12 '16 at 09:28

PaulF · Accepted Answer · 2016-10-13T08:53:41.960

As stated in the link I posted - you need to delete the handle created by CopyEnhMetaFile :

static internal bool SaveEnhMetafileToFile(Metafile mf, string fileName)
{
  bool bResult = false;
  IntPtr hEMF;
  hEMF = mf.GetHenhmetafile(); // invalidates mf 
  if (!hEMF.Equals(new IntPtr(0)))
  {
    StringBuilder tempName = new StringBuilder(fileName);
    IntPtr hCopyEMF = CopyEnhMetaFile(hEMF, tempName.ToString());
    DeleteEnhMetaFile(hCopyEMF);
    DeleteEnhMetaFile(hEMF);
  }
return bResult;
}

ZedGraph doesn't dispose emf file after create it

1 Answers1