Find Mouse Clicks (When App isn't Focused)

[NvrBst]

I want to be able to tell when the mouse left clicks even when my
application doesn't have focus.

I tried adding this to my form
------------------------------------------
protected override void WndProc(ref Message m) {
if(m.Msg == WM_NCLBUTTONDOW N) {
System.Windows. Forms.MessageBo x.Show("Mouse Clicked");
}
base.WndProc(re f m);
}
------------------------------------------

But I only recive the "Mouse Clicked" MessageBox when my application
has focus.

I also tried setting a hotkey and listening for the "WM_HOTKEY" but
"RegisterHotKey (this.Handle, 101, 0, (uint)Keys.LBut ton)" doesn't seem
to caputre the left clicks eventhough it says it successfully
registered the hotkey.

I also tried with "uint VK_LBUTTON = 0x01" &
RegisterHotKey( this.Handle, 101, 0, VK_LBUTTON) but doesn't work.
NOTE: The hotkey method works if I change the "(uint)Keys.LBu tton" to
an actual keyboard key "IE (uint)Keys.F1".

Any help would be great ;)

NB