How do I change color of existing labels in listbox.

[test_man]

How do I change color of existing labels in a listbox.

[test_man]

I know with this function I can change all labels but I need to change specific label color.

SetCtrlAttribute (panelMain, MAIN_LISTBOX, ATTR_TEXT_COLOR, VAL_GREEN);

[Mert_A.]

The tree control supports different colored item labels via SetTreeItemAttribute(....ATTR_LABEL_COLOR...), so I'd suggest replacing your listbox with a tree control.  Luckily, you can pass a tree control to all the same functions you call on a listbox, so replacing it shouldn't be difficult.  You will just have to set a few attributes on the tree (for example, to turn off ATTR_SHOW_CONNECTION_LINES and ATTR_SHOW_PLUS_MINUS) to make it look like a listbox.

Hope this helps.

Mert A.
National Instruments

[RobertoBozzolo]

Well, the listbox actually permits the use of escape codes to set some attributes for individual list items or even part of them: this is accomplished by embedding in the string passed to the control some special labels by which you can set text foreground and background color, separate and column the elements and add some vertical line where desired. All this matter is described in the online help for InserListItem command which you should study carefully to see which possibilities are available. Just to have an example, this is the way to have a list item coloured in blue and red:

   sprintf (item, "\033fg%06XThis text is written in blue \033fg%06XAnd this one in red", VAL_BLUE, VAL RED);
   InsertListItem (panelHandle, PANEL_LISTBOX, -1, item, value);

Even after the introduction of the tree control, to display data when I have none or little interaction with the control I prefere using a listbox instead of a tree since that control is significantly faster in displaying data and easier to program.

[test_man]

Thanks Roberto.

Actually I want to change color of an existing label in listbox. I know I can change color when I insert new item.

Also, is there anyway to set label from index? I want to change label from index. I see GetLabelFromIndex function but I don't see SetLabelFromIndex.

[RobertoBozzolo]

You can use GetLabelFromIndex, GetValueFromIndex, modifiy the existing label according to your needs and use ReplaceListItem to insert the modified label to the listbox replacing the old one.

[test_man]

Thanks again Roberto. That will work.

[JIdée]

Hello,

thanks for this efficient answer.  By any luck, is there a similar procedure for elements in a table?  I tried your example, but it actually prints the numbers after the escape code, instead of changing  the colors...
Many thanks!

[RobertoBozzolo]

Table cells can be tailored calling SetTableCellAttribute; the color of text can be set with ATTR_TEXT_COLOR attribute. In order to work on a set of cells you can use SetTableCellRangeAttribute.

[JIdée]

Many thanks for your fast answer. Unfortunately, I was not precise enough in my question.  I would like to have, in a single cell, different colors of texts and/or background, as it seems to be possible in a listbox...  Thanks again.