Re: My own listbox
Re: My own listbox
- Subject: Re: My own listbox
- From: Matthew Schinckel <email@hidden>
- Date: Sat, 2 Aug 2008 18:18:20 +0930
You should be able to get close by using a different type of object
for the Cells.
That's a much nicer way of doing it.
On 02/08/2008, at 6:10 PM, Vitaly Ovchinnikov wrote:
The problem is that my control will work like listbox, but don't
exactly. Actually I need to draw every row myself. And these rows will
have some padding and many graphics stuff inside. And they will have
adjustable height... And so on.
I don't think that it is possible to do this with standard controls.
Am I wrong?
On Sat, Aug 2, 2008 at 1:33 PM, Boris Remizov <email@hidden>
wrote:
Hello,
You shouldn't do this over work by implementing your own Control.
You may
use
NSTableView or NSOutlineView instead. These visual classes allow to
implement
ListBox's look-and-feel and behavior in much much easier manner.
On Aug 2, 2008, at 12:21 PM, Vitaly Ovchinnikov wrote:
Hello,
In windows there is a control called "Listbox". It looks like grid
with single column without header. Several rows and maybe a
scrollbar.
Example is here:
http://www.java2s.com/Tutorial/VBImages/ListBoxSelectionEventAddValue.PNG
I need to create control that works similar way. It will not be
actually a listbox, but it will work the same way: few objects -
rows
and an optional scrollbar. As a "good" cocoa programmer I derived
NSControl and implemented -drawRect to draw my own rows. Then I put
this control to the window in Interface Builder and embed it into
NSScrollView. Here the problem starts. How can I tell NSScrollView
what size does my control have? I tried to implement -bounds and
-frame methods, but scroller became crazy. I tried this code:
- (NSRect) frame
{
NSRect rc = [super frame];
rc.size.height = number_of_rows * height_of_row;
return rc;
}
- (NSRect) bounds {.. the same..}
NSScrollView shows scrollbar with correct proportions, but then I
drag
it - it scrolls my control to the wrong direction. I tried to play
with -isFlipped - no success.
So I need some similar source to take a look for what I missed. Does
anybody have one?
Thank you.
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--
Matthew Schinckel <email@hidden>
The Feynman Problem-Solving Algorithm:
(1) write down the problem;
(2) think very hard;
(3) write down the answer.
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