The LVM_SETCOLUMNWIDTH message changes the width of a column in report or list view. You can send this message explicitly or by using the ListView_SetColumnWidth macro.
LVM_SETCOLUMNWIDTH
wParam = (WPARAM) (int) iCol;
lParam = MAKELPARAM((int) cx, 0);
Parameters
iCol
Index of the column. In list view, the iCol parameter must be -1.
cx
New width of the column, in list view coordinates, or one of the following values:
| Value | Meaning |
| LVSCW_AUTOSIZE | Automatically sizes the column. |
| LVSCW_AUTOSIZE_USEHEADER | Automatically sizes the column to fit the header text. |
See Also