c++ dynamically add WS_EX_LAYOUTRTL extended style to ListView and its LVCOLUMN

Question

I have a ListView created by CreateWindowExW() with WC_LISTVIEWW. I then create columns using LVCOLUMNW and set the texts via pszText.

I would like the column texts of this list view to be aligned to the right, so I added WS_EX_LAYOUTRTL to the extended style when doing CreateWindowExW(). Then when I create and add the columns to this ListView, text/name/title of each column are aligned to the right, as expected, so far so good.

The issue is, if I exclude WS_EX_LAYOUTRTL from CreateWindowExW(), and instead, use SetWindowLongPtrW to add this RTL extended style to the ListView, and then, create and add LVCOLUMNWs, it would has no effect, the text/name/title of each column are still left-aligned, even the order of columns are not RTL, the first added column would be at far left, whereas with WS_EX_LAYOUTRTL taking effect, it should start from far right.

SetWindowLongPtrW returns a non-zero value which matches the initial extended style combination, so the function call should be a success. The only thing I am thinking now is maybe with ListView and LVCOLUMNW, WS_EX_LAYOUTRTL simply cannot be added after ListView had already been created?

Answer 1

You want to use the LVCFMT_RIGHT format flag on the LVCOLUMN structure.