What will prevent LVN_ITEMACTIVATE from firing?

Question

Hi,

I am writing an app with raw windows API (opensource Win32++) where I have a ListView.

The problem I have now is that whenever an item in the ListView is clicked, the system/app will generate a warning tone/sound "ding". Furthermore, I noticed I cannot get the LVN_ITEMACTIVATE through item-dbl-click or item-keypress-enter, which would normally work if this problem had not occur.

Would anyone have any idea how this might be happening?

I believe there is nothing wrong with Win32++, it just could be one of the things I do is causing this. But my program has become quite big to dissect plus I have no idea where to start looking.

Thanks.

PS: I had my computer muted for the longest time, hence, I don't know when this started eventhough I had the listview since a long time ago. T_T

Answer 1

Start looking with a tool that can show you the Windows messages that the control generates and receives. Like Microsoft's Spy++. Compare it with a working list view to have an idea what might be amiss. Also check the parent window. I haven't otherwise heard of listviews that dingaling, the LVN_ACTIVATEITEM should fire the first WM_LBUTTONDOWN, no double-click necessary.