IntControl 33

Syntax:

IntControl (33, p1, 0, 0, 0)

Controls whether a listbox control in a Dialog box allows multiple items to be selected.

p1 Meaning

0 Single selection

1 Multiple selection (default)

Returns previous setting.

Note: This function must be called before the dialog box is displayed. It cannot be used to modify an existing dialog. For example, you cannot call this function from a dialog callback procedure.