Setup guide
WM_LBUTTONDOWN / WM_LBUTTONDBLCLK
Generated by the system when the user clicks (WM_LBUTTONDOWN) or double-clicks
(WM_LBUTTONDBLCLK) the left mouse button in a window. The message parameters contain the coordinates of
the mouse cursor relative to the window beneath it, the state of the SHIFT and CTRL key and the other mouse
buttons.
The advantage of using keystroke messages over one of the keystroke actions is, that uICE does not
need to change the window order on the desktop, which saves processing time.
Each application is responsible to handle keystroke messages properly. Some applications however
monitor the keyboard hardware itself, which can't be simulated with messages. For these applications,
you'll need to use one of the Keystroke actions.