Question

How to add a click event listener to my custom control made with wxWidgets? The custom control uses wxWindow as the base. On the event list I see

wxEVT_LEFT_DOWN  wxEVT_LEFT_UP  wxEVT_LEFT_DCLICK wxEVT_MIDDLE_DOWN wxEVT_MIDDLE_UP  wxEVT_MIDDLE_DCLICK wxEVT_RIGHT_DOWN  wxEVT_RIGHT_UP wxEVT_RIGHT_DCLICK wxEVT_MOTION wxEVT_ENTER_WINDOW wxEVT_LEAVE_WINDOW wxEVT_MOUSEWHEEL  

But there is no wxEVT_LEFT_CLICK or similar.

Answer 1

Typically, there is no ‘click’ event (and in the case of wxWidgets – there isn’t ). The action of clicking is broken into its two parts: Mouse Down and Mouse Up. Typically what you think of as a ‘left click’ event is actually handled in a ‘left up’ event.

Try it out:

• Hover over a button (such as the ‘Add Comment’ button this page)
• Click the left-mouse button down and hold
• Move the mouse off of the button while holding down
• Release the left-mouse button
• Nothing happens!

This time:

• Hover over the same button
• Click the left-mouse button down and hold
• Release the left-mouse button
• The ‘click’ action you expect is triggered by the up event!