Initialize listview item size.

[Duane Clark]

Dimitrie O. Paun wrote:
> On Mon, 3 Feb 2003, Duane Clark wrote:
> 
> 
>>This is a separate bug from the other listview patches. If an app sends 
>>a LISTVIEW_Paint to a new listview before adding any items (which an app 
>>was :-) the item size was not getting set, causing subsequent 
>>LISTVIEW_Paint calls to clip the painting.
> 
> 
> Sorry Duane, maybe it's just Monday morning, but I don't understand this.
> If the listview has no items, what is it supposed to paint?

It paints the headers. And the problem comes about because in 
LISTVIEW_Paint, a test is made for the first paint, and if it is the 
first paint, the item size is updated.

     if (infoPtr->bFirstPaint)
     {
	UINT uView =  infoPtr->dwStyle & LVS_TYPEMASK;
	
	infoPtr->bFirstPaint = FALSE;
	LISTVIEW_UpdateItemSize(infoPtr);
...


> 
> Also, this just doesn't seem like the right place to place this check.
> What if the app doesn't call LVM_SETITEMCOUNT?
> 

It has nothing to do with LVM_SETITEMCOUNT that I know, or am I missing 
something? This bug is not related to the other bug.