Re: Move notifies around to match native

[Robert Shearman]

Vitaliy Margolen wrote:
Tuesday, April 12, 2005, 10:57:02 PM, you wrote:
 

On Tue, Apr 12, 2005 at 04:13:32PM -0600, Vitaliy Margolen wrote:
   

Well, yes and no. This is custom draw callback/notify. It shouldn't change
control's parameters, such as color. At least on a permanent basis. This is what
set color messages for.
     

Agreed. But judging by what listview is doing, we do need to use them when
we are drawing the item (or whatever). But I agree, we must not change
those parameters permanently.
   

Ok, I need help here. I spend half a day trying to fix this. I moved send 
notify
after color and font setup in TREEVIEW_DrawItem. It's getting closer to native.
But! No matter what I try, I can't set background color from within Delphi App
on DrawItemNotify. Which does work on windows.
Am I missing something? I changed text mode to opaque, so it should use current
brush color for background. But when I printing GetDCBrushColor it stays the
same! Could we have a problem somewhere in GDI?
 

It seems fairly simple to me. You need to make a note of what the app 
changed the nmtvcd.clrTextBk field to (I do this in the toolbar control 
by passing the notify structure around), and then changes some lines in 
TREEVIEW_DrawItem:
           hbrBk = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));
->
           if (nmtvcd->clrTextBk != CLR_NONE)
               hbrBk = CreateSolidBrush(nmtvcd->clrTextBk);
           else
               hbrBk = CreateSolidBrush(GetSysColor(COLOR_BTNFACE));

and then further down:
       if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (wineItem == 
infoPtr->hotItem))
->
       if (nmtvcd->clrTextBk != CLR_NONE)
           hbrBk = CreateSolidBrush(nmtvcd->clrTextBk);
       if ((infoPtr->dwStyle & TVS_TRACKSELECT) && (wineItem == 
infoPtr->hotItem))

Rob