protected override void WndProc(ref Message m)
{
const int WM_DRAWCLIPBOARD = 0x308;
const int WM_CHANGECBCHAIN = 0x030D;
switch (m.Msg)
{
case WM_DRAWCLIPBOARD:
if (intercept)
{
newText();
}
Win32Wrapper.SendMessage(nextClipboardViewer, m.Msg, m.WParam, m.LParam);
break;
case WM_CHANGECBCHAIN:
if (m.WParam == nextClipboardViewer)
{
nextClipboardViewer = m.LParam;
}
else
{
Win32Wrapper.SendMessage(nextClipboardViewer, m.Msg, m.WParam, m.LParam);
}
break;
default:
base.WndProc(ref m);
break;
}
}
/// <summary>
/// Gets the highlighted text from the active window, via the
/// clipboard without damaging current clipboard contents.
/// </summary>
/// <remarks>
/// Saves current clipboard and then sends Ctrl+C to active window.
/// Picks text from clipboard, and restores original clipboard content.
/// </remarks>
public void GetHighlightedText()
{
intercept = true;
saveCurrentContent();
IntPtr handle = Win32Wrapper.GetForegroundWindow();
Win32Wrapper.keybd_event(Win32Wrapper.VK_CONTROL, 0, 0, IntPtr.Zero);
Win32Wrapper.keybd_event(Win32Wrapper.VK_C, 0, 0, IntPtr.Zero);
Win32Wrapper.keybd_event(Win32Wrapper.VK_C, 0, Win32Wrapper.KEYEVENTF_KEYUP, IntPtr.Zero);
Win32Wrapper.keybd_event(Win32Wrapper.VK_CONTROL, 0, Win32Wrapper.KEYEVENTF_KEYUP, IntPtr.Zero);
}
private ClipboardManager()
{
nextClipboardViewer = Win32Wrapper.SetClipboardViewer(this.Handle);
}
