C# Signature:
[DllImport("user32.dll", SetLastError=true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool RemoveClipboardFormatListener(IntPtr hwnd);
VB Signature:
<DllImport("user32.dll", SetLastError:=true)> _
Public Function RemoveClipboardFormatListener(hWnd As IntPtr) As <MarshalAs(UnmanagedType.Bool)>Boolean
User-Defined Types:
None.
Alternative Managed API:
Do you know one? Please contribute it!
Notes:
None.
Tips & Tricks:
Please add some!
Sample Code:
// C# Example:
// Declare the API method for placing the given window in the system-maintained clipboard format listener list.
[DllImport("user32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool AddClipboardFormatListener(IntPtr hwnd);
// Declare the API method for removing the given window from the system-maintained clipboard format listener list.
[DllImport("user32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool RemoveClipboardFormatListener(IntPtr hwnd);
// Here is the message sent when the contents of the clipboard have changed.
private const int WM_CLIPBOARDUPDATE = 0x031D;
// Here is how to add our window to the Clipboard Format Listener:
AddClipboardFormatListener(this.Handle);
// Here is how to process The Message:
protected override void WndProc(ref Message m)
{
base.WndProc(ref m);
if (m.Msg == WM_CLIPBOARDUPDATE)
{
IDataObject iData = Clipboard.GetDataObject(); // Clipboard's data.
if (iData.GetDataPresent(DataFormats.Text))
{
string text = (string)iData.GetData(DataFormats.Text);
// do something with it
}
else if (iData.GetDataPresent(DataFormats.Bitmap))
{
Bitmap image = (Bitmap)iData.GetData(DataFormats.Bitmap);
// do something with it
}
// you can also check for more formats and process accordingly
}
}
// When closing your program, first remove the format listener:
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
RemoveClipboardFormatListener(this.Handle); // Remove our window from the clipboard's format listener list.
}
