Thread: get count in listbox

i have programming windows from the ground up and the book lists some listbox messages to send to it, and i want to get the number of strings in the listbox. so i'm going to send the message to the listbox and the message is LB_GETCOUNT. but, the book only tells me the message, not what i should set the WPARAM and LPARAM to. what do i need to set them to in the SendMessage function?

thanks!

Both should be 0. SendMessage will return the number of elements or LB_ERR.

okay, thanks.