Creating a ComboBox with one or more separator items?

Posted by Steve on Stack Overflow See other posts from Stack Overflow or by Steve
Published on 2010-12-04T17:46:39Z Indexed on 2014/08/25 16:20 UTC
Read the original article Hit count: 237

Filed under:

delphi

|

combobox

|

delphi-7

|

separator

I'm using Delphi7 and I'd like to have a ComboBox with separator items (Just like in popup menus).

I've seen this beautifully implemented in Mozilla Sunbird (I know, it's not Delphi...) the following way:

The separator item is a simple gray line drawn in the center of the item
If you hover over the separator with the mouse, the selection doesn't appear
If the user clicks the separator, it's not selected either AND the combobox doesn't closeup.

No. 1 could be implemented using DrawItem. I could live without No. 2 because I have no idea about that.

For No. 3 I'm asking for your help. I've figured out that straight after closing up a CBN_CLOSEUP message is sent to the combobox.

I thought about hooking the window proc and if CBN_CLOSEUP is sent to a certain combobox then countering it. But I'm unsure if this is the best solution, or maybe there are other, more elegant ways?

Whatever the solution is, I'd like to have a standard ComboBox which supports WinXP/Vista/7 theming properly.

Thanks!

Edit: For a working component please see this thread:

Can you help translating this very small C++ component to Delphi?

© Stack Overflow or respective owner

Related posts about delphi

TVirtualStringTree compatibility between Delphi 7 and Delphi 2010 - 'Parameter lists differ'

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I've made a form containing a TVirtualStringTree that works in Delphi 7 and Delphi 2010. I notice that as I move between the two platforms I get the message '...parameter list differ..' on the tree events and that the string type is changing bewteen TWideString (D7) and string (D2010). The only… >>> More
Convert Delphi 7 code to work with Delphi 2009

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a String that I needed access to the first character of, so I used stringname[1]. With the unicode support this no longer works. I get an error: [DCC Error] sndkey32.pas(420): E2010 Incompatible types: 'Char' and 'AnsiChar' Example code: //vkKeyScan from the windows unit var KeyString:… >>> More
Book recommendation for moving from Delphi 6 to Delphi 2010

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am a long time Delphi 6 developer. Looking for a book on Delphi 2010. Not only on the new features available in Delphi 2010, but more importantly, guideline on how different it is to develop applications in Delphi 2010, the architecture, standard and convention, etc. Thanks a lot. >>> More
Compile Delphi component package (bpl) for different Delphi versions

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello. The situation is the following. Typically I use RAD Studio 2010 for Delphi development. I have some components I would like to redistribute in binary form (*.bpl without source). But I would like people to be able to use them despite of their Delphi version. But, for example, dcu files can… >>> More
Delphi Speech recognition delphi

as seen on Stack Overflow - Search for 'Stack Overflow'
I need create a programatic equivalent using delphi language... or could someone post a link on how to do grammars in peech recogniton using the delphi. sorry for my english... XML Grammar Sample(s): <GRAMMAR>  <RULE NAME="HelloWorld"… >>> More

Related posts about combobox

BindingSource And ComboBox: Combobox Binded on another Source

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I would like to make Something in my form. I have a Binding source binded on Linq to Sql Class. The class Workorder contains one field Site. I would like to display The combobox with all the site, but selected on the site form my workorder. I'm clear? Julien >>> More
Zend - combobox value depending on another combobox value

as seen on Stack Overflow - Search for 'Stack Overflow'
Is there a way in Zend Framework to fill a combobox with values depending on the value chosen in a previous combobox, but on the same page? In my case I have a combobox for domain and one for specialization. If i choose Informatics in the first combobox (domain), I want to fill the second one with… >>> More
Flex 3 Value aware combo box error

as seen on Stack Overflow - Search for 'Stack Overflow'
I am using a value aware combobox, it was working fine, but recently i started getting the below error, when I try to click on combobox, and the error is random. I am not sure of it is because of any changes i have done in the coding, or some changes in data provider etc any help is appreciated.… >>> More
Using the RadComboBox button, is it possible to populate a different combobox when one combobox make

as seen on Stack Overflow - Search for 'Stack Overflow'
I have two combo boxes that are cascading. I would like to have it so that when I select something in ComboBox1, it will fire off a web method that automatically filters the list in ComboBox2. At the moment, I'm adding the value of ComboBox1 to the context key of the ComboBox2 web service when… >>> More
Populating a combobox on selectedindex change of another combobox

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I have created a custom dialog UI, which contains two combobox with SQL server instance & on selection of one of SQLServer instance, another combobox has to be filled with name of Databases on that server instance. I am able to find filling combo with SQL server Instances I had written a… >>> More