Multi column list box with sort

Yay, I have finally cracked this. I've modified Ziltches code to make it OO structured and also added my own sort functionality (clicking column heading will alternate between ascending and decending sort). I hope others find it useful :-)

EDIT: Moved code to Code archives section: http://www.blitzmax.com/codearcs/codearcs.php?code=2293

This looks great. However I can't seem to move the window - any attempt to do so via the title bar renders the listboxes black and the window freezes til I click the desktop and then reclick a listbox. The same happens if I try via the system menu :(

Not sure how I missed that (although I have just updated Blitz to 1.30, not sure if the same happened in 1.28). Will find a way to fix it :-)

OK fixed it for 1.30. Not sure why, but adding a canvas seemed to fix it! I also updated it to extend TProxyGadget, made it unicode compliant, and also remembers the selected item after a sort.

Thanks for the update - this is seriously neat!

Still a teeny problem though: remembering the selected item after a sort is very flaky - clicking on a row and then on random column headers often removes the selection. Good opportunity for me to stretch the old brain cell and see if I can work out why... ;-)

Very nice. A good and useful addition! Something i could may add to Logic Gui?

While playing with it i found two minor things though you might want to look at.

When moving the separators between the titles and then clicking on one of them to do a sort, the first separator jumps back to it's initial size.

I made the window resizable to see how that works:
Local window:TGadget =CreateWindow("Multi-Column List Example",100,100,320,280,Null,WINDOW_TITLEBAR|WINDOW_CLIENTCOORDS|WINDOW_RESIZABLE)
Again the separator of the first column moves, this time to the smallest position, when you resize the window (or minimize/maximize).

Hmm, see what you mean about the selection. Can't see anything obvious so feel free to have a crack at it.

jsp - I was hoping you would ask that :-) Feel free to use it in LogicGui, although you may want to wait until the bugs have been ironed out.

I was already aware of the first column width resizing, although on mine (Win XP) the size remains when sorting. It reset to minimum width if I edge aligned the gadget, and also if I resize the window. It's on my list of things to fix!

That resizing problem rang a bell:
http://blitzmax.com/Community/posts.php?topic=53343#609330

There are a lot of LVM_SETCOLUMNWIDTHs sent in win32listbox.cpp so if that code is called, it could be the source of the resizing as it was for me 2 years ago ! :)

Thanks for the link (it needs a www. to work btw). I've got a few things I need to work on so will try and have a look at this tomorrow.

Good work Ghost Dancer!

What Peter said is true.
If we could only get maxgui code to check first if there is only one column before autosizing.

this line appears 3 times in win32listbox.cpp
SendMessage(_gadget.hwnd(),LVM_SETCOLUMNWIDTH,0,-2);

Thanks Ziltch - couldn't have done it without your original code.

Would be great if maxgui could be updated as you suggested, I prefer not to change the module code if at all possible. I think for now I will write an update method that can be called on a resize event, but would be nice if it could be self contained.

EDIT: Just uploaded latest version to code archives (link in first post)