/// <param name="fOwn">
/// <see cref="BOOL.TRUE"/> if the picture object is to destroy its picture when the object is destroyed.
/// (The picture handle in the <paramref name="pictdesc"/>.)
/// </param>
public unsafe static object OleCreatePictureIndirect(ref PICTDESC pictdesc, ref Guid refiid, BOOL fOwn)
{
pictdesc.cbSizeofstruct = (uint)sizeof(PICTDESC);
fixed(PICTDESC *p = &pictdesc)
{
return(OleCreatePictureIndirect(p, ref refiid, fOwn));
}
}
public static PICTDESC FromMetafile(Metafile metafile)
{
PICTDESC desc = new PICTDESC
{
picType = PICTYPE.ENHMETAFILE
};
desc.Union.emf.hemf = metafile.GetHenhmetafile();
return(desc);
}
public static PICTDESC FromBitmap(Bitmap bitmap, IntPtr paletteHandle = default)
{
PICTDESC desc = new PICTDESC
{
picType = PICTYPE.BITMAP
};
desc.Union.bmp.hbitmap = bitmap.GetHbitmap();
desc.Union.bmp.hpal = paletteHandle;
return(desc);
}
private static object GetTransparentIPictureDispFromBitmapHandle( IntPtr hIntPtr )
{
int iResult;
Guid objGuid = new Guid("00020400-0000-0000-C000-000000000046");
PICTDESC tPICTDESC = new PICTDESC(hIntPtr);
tPICTDESC.SizeOfStruct = Marshal.SizeOf(tPICTDESC);
stdole.IPictureDisp objPicture;
iResult = OleCreatePictureIndirect(ref tPICTDESC, ref objGuid, 1, out objPicture);
return objPicture;
}
public override object ConvertManagedToNative(object managedValue, Com2PropertyDescriptor pd, ref bool cancelSet)
{
// Don't cancel the set
cancelSet = false;
if (_lastManaged?.Equals(managedValue) == true)
{
object target = _pictureRef?.Target;
if (target is not null)
{
return(target);
}
}
// We have to build an IPicture
if (managedValue is not null)
{
BOOL own = BOOL.FALSE;
PICTDESC pictdesc;
if (managedValue is Icon icon)
{
pictdesc = PICTDESC.FromIcon(icon, copy: false);
}
else if (managedValue is Bitmap bitmap)
{
pictdesc = PICTDESC.FromBitmap(bitmap);
own = BOOL.TRUE;
}
else
{
Debug.Fail($"Unknown Image type: {managedValue.GetType().Name}");
return(null);
}
Guid iid = typeof(IPicture).GUID;
IPicture pict = (IPicture)OleCreatePictureIndirect(ref pictdesc, ref iid, own);
_lastManaged = managedValue;
_lastNativeHandle = (IntPtr)pict.Handle;
_pictureRef = new WeakReference(pict);
return(pict);
}
else
{
_lastManaged = null;
_lastNativeHandle = IntPtr.Zero;
_pictureRef = null;
return(null);
}
}
private static PICTDESC GetPICTDESCFromPicture(Image image)
{
if (image is Bitmap bmp)
{
return(PICTDESC.FromBitmap(bmp));
}
if (image is Metafile mf)
{
return(PICTDESC.FromMetafile(mf));
}
throw new ArgumentException("AXUnknownImage", nameof(image));
}
public static PICTDESC FromIcon(Icon icon, bool copy)
{
PICTDESC desc = new PICTDESC
{
picType = PICTYPE.ICON
};
desc.Union.icon.hicon = copy ?
User32.CopyImage(
icon.Handle,
User32.IMAGE.ICON,
icon.Width,
icon.Height,
User32.LR.DEFAULTCOLOR)
: icon.Handle;
GC.KeepAlive(icon);
return(desc);
}
public static PICTDESC CreateWinMetafilePICTDESC(IntPtr hmetafile, int x, int y) {
PICTDESC pictdesc = new PICTDESC();
pictdesc.cbSizeOfStruct = 20;
pictdesc.picType = Ole.PICTYPE_METAFILE;
pictdesc.union1 = hmetafile;
pictdesc.union2 = x;
pictdesc.union3 = y;
return pictdesc;
}
public static PICTDESC CreateIconPICTDESC(IntPtr hicon) {
PICTDESC pictdesc = new PICTDESC();
pictdesc.cbSizeOfStruct = 12;
pictdesc.picType = Ole.PICTYPE_ICON;
pictdesc.union1 = hicon;
return pictdesc;
}
public static PICTDESC CreateBitmapPICTDESC(IntPtr hbitmap, IntPtr hpal) {
PICTDESC pictdesc = new PICTDESC();
pictdesc.cbSizeOfStruct = 16;
pictdesc.picType = Ole.PICTYPE_BITMAP;
pictdesc.union1 = hbitmap;
pictdesc.union2 = (int)(((long)hpal) & 0xffffffff);
pictdesc.union3 = (int)(((long)hpal) >> 32);
return pictdesc;
}
public static IPicture GetIPictureFromPicture(Image image)
{
PICTDESC desc = GetPICTDESCFromPicture(image);
return((IPicture)OleCreatePictureIndirect(ref desc, in s_ipicture_Guid, fOwn: BOOL.TRUE));
}
public static IPicture GetIPictureFromCursor(IntPtr cursorHandle)
{
PICTDESC desc = PICTDESC.FromIcon(Icon.FromHandle(cursorHandle), copy: true);
return((IPicture)OleCreatePictureIndirect(ref desc, in s_ipicture_Guid, fOwn: BOOL.TRUE));
}
public static extern IPicture OleCreatePictureIndirect(PICTDESC pictdesc, [In] ref Guid refiid, bool fOwn);
public static extern void OleCreatePictureIndirect(ref PICTDESC pPictDesc, ref Guid riid, bool fOwn, out stdole.StdPicture ppvObj);
public static PICTDESC CreateEnhMetafilePICTDESC(IntPtr hEMF) {
PICTDESC pictdesc = new PICTDESC();
pictdesc.cbSizeOfStruct = 12;
pictdesc.picType = Ole.PICTYPE_ENHMETAFILE;
pictdesc.union1 = hEMF;
return pictdesc;
}
public static IPictureDisp GetIPictureDispFromPicture(Image image)
{
PICTDESC desc = GetPICTDESCFromPicture(image);
return((IPictureDisp)OleCreatePictureIndirect(ref desc, ref ipictureDisp_Guid, fOwn: BOOL.TRUE));
}
static extern int OleCreatePictureIndirect( ref PICTDESC pPictDesc, ref Guid riid, int fOwn, out stdole.IPictureDisp ppvObj );
public static extern int OleCreatePictureIndirect(ref PICTDESC pPictDesc,
ref Guid riid, int fOwn, [MarshalAs(UnmanagedType.IDispatch)] ref object
ppvObj);
public static extern int OleCreatePictureIndirect(ref PICTDESC pPictDesc, ref Guid riid, int fOwn, [MarshalAs(UnmanagedType.IDispatch)] ref object ppvObj);
/// <param name="fOwn"> /// <see cref="BOOL.TRUE"/> if the picture object is to destroy its picture when the object is destroyed. /// (The picture handle in the <paramref name="pictdesc"/>.) /// </param> public unsafe static object OleCreatePictureIndirect(ref PICTDESC pictdesc, in Guid refiid, BOOL fOwn)
public static stdole.StdPicture LoadPictureRes(string name)
{
Bitmap bmp = new Bitmap(Assembly.GetExecutingAssembly().GetManifestResourceStream(name));
//for (int i = 0; i < bmp.Palette.Entries.Length; i++ )
//bmp.Palette.Entries[i] = Color.FromArgb(0, 254, 0);
//CreateMappedBitmap(IDE.AddInInstance, BMP_ID, 0, g_map, 1)
PICTDESC pPictDesc = new PICTDESC(bmp);
Guid riid = new Guid("7BF80980-BF32-101A-8BBB-00AA00300CAB");
stdole.StdPicture ppvObj = null;
OleCreatePictureIndirect(ref pPictDesc, ref riid, true, out ppvObj);
bmp.Dispose();
return ppvObj;
}