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Did you set the ex. style with ListView_SetExtendedListViewStyle? I've had problems with setting it as extended style for CreateWindowEx..

Thomas

I've never heard the phrase 'swallow some toads', but it sounds like a good way to describe virtual listviews ;-) I lost my checkboxes too! I don't know if this is what you tried, but I think you need to create a State image list with INDEXTOSTATEIMAGEMASK of 2 checkbox icon images, I assume to replace the ones normally created by the control with the LVS_EX_CHECKBOXES style.


LVS_EX_CHECKBOXES
Enables check boxes for items in a list-view control. When set to this style, the control creates and sets a state image list with two images using DrawFrameControl. State image 1 is the unchecked box, and state image 2 is the checked box. Setting the state image to zero removes the check box altogether.


Once you've created the image list hopefully you can set the state of the checkboxes with
;------------------------------------------
; (INDEX SHL 12) INDEX can be 0,1 or 2:
;0 = no checkbox
;1 = unchecked checkbox
;2 = checked checkbox
mov lvi.stateMask, LVIS_STATEIMAGEMASK
mov lvi.state,(2 SHL 12)
invoke SendMessage, _hListView, LVM_SETITEMSTATE, lvi.iItem, ADDR lvi.LV_ITEM
;---------------------------------------------

I don't know if the checkboxes will still respond as normal to a mouse click and you can use BN_CLICKED to handle the users selection, this might be another toad to swallow...


btw Japheth, thanks for the suggestion of using NM_RCLICK to handle the popup menu on a virtual listview, it works nicely. I had tried it but rejected it initially because it doesn't return the mouse hot spot like WM_CONTEXT does, but I got it with this

.if [edi].hwndFrom == eax  && [edi].code == NM_RCLICK



	invoke GetMessagePos	; returns cursor position in screen coordinates

        mov ebx, eax		; x/y pos of window

        and ebx, 0000ffffh      ; ebx = LOWORD(lparam) = x pos

        shr eax, 16             ; eax = HIWORD(lparam) = y pos



	invoke TrackPopupMenu, hPopupMenu, 0, ebx, eax, 0, hMainWindow, NULL

The other problem with how to ensure that WM_NOTIFY is called for every item in the listview rather than just for the on-screen items when RedrawWindow is called, can be solved with sending an SB_PAGEDOWN message for the number of pages you have.

;--------------------------------------------------------

; WM_NOTIFY with the LVN_GETDISPINFO notification code

; will be called for each item in listview in response to the scrolling. 

;--------------------------------------------------------

; sif SCROLLINFO <sizeof SCROLLINFO>



invoke GetScrollInfo, hListView, SB_VERT, addr sif



mov edi, sif.nPage  ; number of rows per page (indexed to 0)

mov eax, sif.nMax  ; maximum scrolling position = number of rows (indexed to 0)

xor edx, edx		

div edi	; rows / (rows/page) 

		

mov edi, eax  ; whole number result of division = # pages to scroll	

mov esi, 0

		

.while esi < edi	



	invoke SendMessage, hListView, WM_VSCROLL, SB_PAGEDOWN, NULL

	inc esi

.endw

The only problem with this is the last item on a page becomes the first item on the next page, so you end up with a few duplicate WM_NOTIFY messages you may have to filter depending on what you're doing.


You said setting images with LVN_GETDISPINFO/LVIF_IMAGE works but has some limitations you dont want to accept yet. What kind of limitations?

Kayaker