/// <summary>
/// Empty the Clipboard and Restore to system clipboard data contained in a collection of ClipData objects
/// </summary>
/// <param name="clipData">The collection of ClipData containing data stored from clipboard</param>
/// <returns></returns>
private static bool SetClipboard(ReadOnlyCollection <DataClip> clipData)
{
//Open clipboard to allow its manipulation
if (!Win32ClipboardAPI.OpenClipboard(IntPtr.Zero))
{
return(false);
}
//Clear the clipboard
EmptyClipboard();
//Get an Enumerator to iterate into each ClipData contained into the collection
IEnumerator <DataClip> cData = clipData.GetEnumerator();
while (cData.MoveNext())
{
DataClip cd = cData.Current;
//Get the pointer for inserting the buffer data into the clipboard
IntPtr alloc = Win32MemoryAPI.GlobalAlloc(Win32MemoryAPI.GMEM_MOVEABLE | Win32MemoryAPI.GMEM_DDESHARE, cd.Size);
IntPtr gLock = Win32MemoryAPI.GlobalLock(alloc);
//Copy the buffer of the ClipData into the clipboard
if ((int)cd.Size > 0)
{
Marshal.Copy(cd.Buffer, 0, gLock, cd.Buffer.GetLength(0));
}
//Release pointers
Win32MemoryAPI.GlobalUnlock(alloc);
Win32ClipboardAPI.SetClipboardData(cd.Format, alloc);
}
;
//Close the clipboard to release unused resources
Win32ClipboardAPI.CloseClipboard();
return(true);
}
/// <summary>
/// Convert to a DataClip collection all data present in the clipboard
/// </summary>
/// <returns></returns>
private static ReadOnlyCollection <DataClip> GetClipboard()
{
//Init a list of ClipData, which will contain each Clipboard Data
List <DataClip> clipData = new List <DataClip>();
//Open Clipboard to allow us to read from it
if (!Win32ClipboardAPI.OpenClipboard(IntPtr.Zero))
{
return(new ReadOnlyCollection <DataClip>(clipData));
}
//Loop for each clipboard data type
uint format = 0;
while ((format = Win32ClipboardAPI.EnumClipboardFormats(format)) != 0)
{
//Check if clipboard data type is recognized, and get its name
string formatName = "0";
DataClip cd;
if (format > 14)
{
StringBuilder res = new StringBuilder();
if (Win32ClipboardAPI.GetClipboardFormatName(format, res, 100) > 0)
{
formatName = res.ToString();
}
}
//Get the pointer for the current Clipboard Data
IntPtr pos = Win32ClipboardAPI.GetClipboardData(format);
//Goto next if it's unreachable
if (pos == IntPtr.Zero)
{
continue;
}
//Get the clipboard buffer data properties
UIntPtr lenght = Win32MemoryAPI.GlobalSize(pos);
IntPtr gLock = Win32MemoryAPI.GlobalLock(pos);
byte[] buffer;
if ((int)lenght > 0)
{
//Init a buffer which will contain the clipboard data
buffer = new byte[(int)lenght];
int l = Convert.ToInt32(lenght.ToString());
//Copy data from clipboard to our byte[] buffer
Marshal.Copy(gLock, buffer, 0, l);
}
else
{
buffer = new byte[0];
}
//Create a ClipData object that represtens current clipboard data
cd = new DataClip(format, formatName, buffer);
cd.FormatName = formatName;
//Add current Clipboard Data to the list
clipData.Add(cd);
}
//Close the clipboard and realese unused resources
Win32ClipboardAPI.CloseClipboard();
//Returns the list of Clipboard Datas as a ReadOnlyCollection of ClipData
return(new ReadOnlyCollection <DataClip>(clipData));
}
/// <summary>
/// Remove all data from Clipboard
/// </summary>
/// <returns></returns>
public static bool EmptyClipboard()
{
return(Win32ClipboardAPI.EmptyClipboard());
}