/// <summary>
/// Places nonpersistent data on the system clipboard.
/// </summary>
/// <param name="data">The data to place on the clipboard.</param>
/// <exception cref="System.ArgumentNullException">The value of data is null.</exception>
public static void SetDataObject(IDataObject data)
{
if (data == null)
{
throw new ArgumentNullException("The value of data is null");
}
else
{
if (!OpenClipboard(IntPtr.Zero))
{
throw new System.Runtime.InteropServices.ExternalException("Could not open Clipboard");
}
if (!EmptyClipboard())
{
throw new System.Runtime.InteropServices.ExternalException("Unable to empty Clipboard");
}
//from here on we are only supporting unicode text, but it would be possible to support other formats
if (data.GetDataPresent(DataFormats.UnicodeText))
{
string unicodedata;
IntPtr hClipboard;
try
{
//extract unicode string from supplied data
unicodedata = data.GetData(DataFormats.UnicodeText).ToString();
}
catch
{
throw new FormatException("Clipboard data not in a recognised format");
}
//marshall the string
hClipboard = MarshalEx.StringToHGlobalUni(unicodedata);
//pass data to clipboard
if (SetClipboardData(ClipboardFormats.UnicodeText, hClipboard) == IntPtr.Zero)
{
throw new System.Runtime.InteropServices.ExternalException("Could not put data on Clipboard");
}
}
else if (data.GetDataPresent(DataFormats.Bitmap))
{
System.Drawing.Bitmap bmp = (System.Drawing.Bitmap)data.GetData(DataFormats.Bitmap);
int bs = bmp.Width * 3 * bmp.Height;
//allocate unmanaged memory
IntPtr hClipboard = MarshalEx.AllocHGlobal(bs + 41);
byte[] buffer = new byte[40];
MemoryStream strm = new MemoryStream(buffer);
BinaryWriter wr = new BinaryWriter(strm);
wr.Write(40);
wr.Write(bmp.Width);
wr.Write(bmp.Height);
wr.Write((short)1);
wr.Write((short)0x18);
// remaining bytes will be 0
wr.Close();
MarshalEx.WriteByteArray(hClipboard, 0, buffer);
int pos = 40;
for (int r = bmp.Height - 1; r >= 0; r--)
{
for (int c = 0; c < bmp.Width; c++)
{
int color = bmp.GetPixel(c, r).ToArgb();
byte red = (byte)((color & 0x00ff0000) >> 16);
byte green = (byte)((color & 0x0000ff00) >> 8);
byte blue = (byte)(color & 0x000000ff);
MarshalEx.WriteByte(hClipboard, pos++, blue);
MarshalEx.WriteByte(hClipboard, pos++, green);
MarshalEx.WriteByte(hClipboard, pos++, red);
}
}
//pass data to clipboard
if (SetClipboardData(ClipboardFormats.Bitmap, hClipboard) == IntPtr.Zero)
{
throw new System.Runtime.InteropServices.ExternalException("Could not put data on Clipboard");
}
}
if (!CloseClipboard())
{
throw new System.Runtime.InteropServices.ExternalException("Could not close Clipboard");
}
}
}
