This message fills a buffer with an array of integers specifying the item numbers of selected items in a multiselection list box.
Parameter |
Description |
wParam |
Specifies the maximum number of selected items whose item numbers are to be placed in the buffer. |
|
lParam |
Contains a long pointer to a buffer large enough for the number of integers specified by the wParam parameter. |
The return value is the actual number of items placed in the buffer. If the list box is a single-selection list box, the return value is LB_ERR.