public void Unhook()
{
IntPtr handle = this.control.Handle;
if (handle == IntPtr.Zero)
{
throw new InvalidOperationException("Handle for control has not been created");
}
Win32.SetWindowLong(handle, -4, this.oldWndProc);
}
public void SetHook()
{
IntPtr handle = this.control.Handle;
if (handle == IntPtr.Zero)
{
throw new InvalidOperationException("Handle for control has not been created");
}
this.oldWndProc = Win32.SetWindowLong(handle, -4, Marshal.GetFunctionPointerForDelegate(this.newWndProc));
}
private void OhneFocus()
{
const int WS_EX_NOACTIVATE = 0x08000000;
const int GWL_EXSTYLE = -20;
try
{
IntPtr handle = this.Handle;
if (handle == IntPtr.Zero)
{
throw new InvalidOperationException("Handle for control has not been created");
}
Win32.SetWindowLong(handle, GWL_EXSTYLE, WS_EX_NOACTIVATE);
}
catch (Exception)
{
throw;
}
}