how to dynamically set sort/!sort on listbox

[macabre13]

Hi,
I'm trying to change the sorting/not sorting style of listbox in runtime.
Code example

HWND hListItemsList =   GetDlgItem( hDlg, ID_DLG_ITEMLIST );
DWORD style = GetWindowLong(hListItemsList, GWL_STYLE);
style = style|LBS_SORT;
SetWindowLong( hListItemsList, GWL_STYLE, style );

SetWindowPos( hListItemsList, hListItemsList, 10, 10, 10, 10, SWP_FRAMECHANGED|SWP_NOSIZE|SWP_NOMOVE);   /// <<< this was supposed to help - FAILED
SendMessage( hListItemsList, LB_RESETCONTENT, 0, MAKELPARAM(10, 0));

for( size_t i=0; i<g_vecScannedItems.size(); ++i )
   {
      SendMessage( hListItemsList, LB_ADDSTRING, 0, (LPARAM)g_vecScannedItems[i].c_str() );
   } // for

However after this trick, items doesn't seem to be sorted. Any ideas?

/J

[ovidiucucu]

Unfortunately, few common control styles cannot be changed after creation.
LBS_SORT is one of them.

[macabre13]

OK, good to know that.

BTW maybe you know why, when I'm creating the listbox from a scratch the size of item fonts are bigger that the ones used in original listbox.
Where or how change the size of it?
I was trying to use LB_SETITEMHEIGHT but without any effect.

[ovidiucucu]

When you create whatever control by calling a Create... function it has not an associated font.
The system will use a default font, one which may be larger than one set when your control was created from a resouece.

Take a look at WM_SETFONT.

[Marc G]

A solution to your sorting issue is that you create 2 listboxes. One is sorted and the other one is not sorted. Then just show/hide the listbox that you want.

[macabre13]

That's the way I will follow. But I was hoping for sth more tricky
Thanks for help.

/J

[Igor Vartanov]

But I was hoping for sth more tricky

Okay, there it is: You create an owner-drawn listbox of LBS_SORT style. Following this way you have to implement a comparison function (in fact it's a handler of WM_COMPAREITEM message), where you provide according to current settings any sorting algorythm you fancy.