private void exportAsButton__Click(object sender, EventArgs e)
{
if (metafileCanvas_.Metafile == null)
{
return;
}
using (var saveFileDialog = new SaveFileDialog())
{
var filters = new string[]
{
"Bitmap Files (*.bmp;*.dib)|*.bmp;*.dib",
"JPEG Files (*.jpg;*.jpeg)|*.jpg;*.jpeg",
"PNG Files (*.png)|*.png",
"Windows Meta Files (*.emf;*.wmf)|*.emf;*.wmf",
"All Files (*.*)|*.*",
};
saveFileDialog.FileName = Path.GetFileNameWithoutExtension(filePath_);
saveFileDialog.Filter = string.Join("|", filters);
saveFileDialog.FilterIndex = 3;
if (saveFileDialog.ShowDialog() == DialogResult.OK)
{
switch (Path.GetExtension(saveFileDialog.FileName).ToLower())
{
case ".emf":
#if false
// TODO:
// If orientation is changed, then the exported emf file can not be opened with
// this application anymore.
metafileCanvas_.Metafile.Save(saveFileDialog.FileName, ImageFormat.Emf);
#else
var metafile = metafileCanvas_.Metafile;
MetafileUtility.CopyMetafile(ref metafile, saveFileDialog.FileName);
metafileCanvas_.Metafile = metafile;
#endif
break;
case ".wmf":
metafile = metafileCanvas_.Metafile;
MetafileUtility.MetafileToWMF(ref metafile, saveFileDialog.FileName);
metafileCanvas_.Metafile = metafile;
break;
default:
using (var bitmap = MetafileUtility.MetafileToBitmap(metafileCanvas_.Metafile))
{
bitmap.Save(saveFileDialog.FileName);
}
break;
}
}
}
}
private void propertiesComboBox__SelectedIndexChanged(object sender, EventArgs e)
{
var selectedItem = propertiesComboBox_.SelectedItem;
if (selectedItem == null)
{
return;
}
switch (selectedItem.ToString())
{
case "Metafile":
propertyGrid_.SelectedObject = metafile_;
break;
case "MetafileHeader":
propertyGrid_.SelectedObject = metafile_.GetMetafileHeader();
break;
case "ENHMETAHEADER":
using (var metafile = MetafileUtility.CopyMetafile(ref metafile_))
{
// Metafile.GetHenhmetafile is just a wrapper of GdipGetHemfFromMetafile:
// https://github.com/dotnet/runtime/blob/78c6505cffe2558b036fbe44cd27038affbb6cce/src/libraries/System.Drawing.Common/src/System/Drawing/Imaging/Metafile.Windows.cs#L379-L383
// and according to:
// http://www.jose.it-berater.org/gdiplus/reference/flatapi/graphics/gdipgethemffrommetafile.htm
// > GdipGetHemfFromMetafile:
// > This method sets the Metafile object to an invalid state. The user is responsible for calling DeleteEnhMetafile,
// > to delete the Windows handle.
var enhMetafileHandle = metafile.GetHenhmetafile();
if (enhMetafileHandle != IntPtr.Zero)
{
var header = Gdi32.GetEnhMetaFileHeader(enhMetafileHandle);
propertyGrid_.SelectedObject = new EnhMetaHeader(header);
Gdi32.DeleteEnhMetaFile(enhMetafileHandle);
}
}
break;
default:
Debug.Assert(false);
break;
}
}