Re: My own listbox
Re: My own listbox
- Subject: Re: My own listbox
- From: "Vitaly Ovchinnikov" <email@hidden>
- Date: Sat, 2 Aug 2008 12:40:30 +0400
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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