Custom expansion indicator image | Infragistics Forums

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Custom expansion indicator image

Shane posted over 15 years ago

I have a multi banded grid with the UseOSThemes property set to false. Of course this now makes my expansion indicators very small and they don't really stand out as well as I would like. What I would prefer to have here is a custom +/- image. Can someone please tell me how to do this?

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Offline Mike Saltzman posted over 15 years ago

There are a couple of options that may be easier that using a DrawFilter.

1) You can apply images to the expansion indicators using AppStylist.

2) You could leave UseOsThemes on the grid set to true (the default). Then you could turn off themes on individual parts of the grid, rather than the entire grid. You do this by setting the ThemedElementAlpha to Transparent on any of the grid's Appearance objects. There aren't that many parts of the grid that uses themes, anyway, so I think this would be pretty easy. You probably just have to set it on the HeaderAppearance and the CellButtonAppearance and perhaps the ScrollBarLook appearances.
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François posted over 15 years ago in reply to Mike Saltzman

Hi Mike,

I like the first solution (apply images to the expansion indicators using AppStylist)... but I could'nt find this property in the AppStylist. Wich component, or UIRole, contains the Image property for expaansion indicator ?

Could you please point me in the right direction ?

Thank you for your helpfull advices

François
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Offline Mike Saltzman posted over 15 years ago in reply to François
Hi François,

Here's what you do:

Open up your Style Library in AppStylist )or create a new one) and go to the Grid canvas.

I think the grid canvas only shows a single-band grid by default, so there are no expansion indicators visible. But you can fix this by going to the Canvas Options button at the top (above the canvases) and select Hierarchical under the View options.

Once you get the expansion indicators showing in the grid, you just mouse over one of them and press the number "1" on the keyboard. This will take you to the GridExpansionIndicator UIRole.

You can assign an image to the Normal state and that will apply to collapsed expansion indicators. The Expanded state image will apply to expanded expansion indicators.
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François posted over 15 years ago in reply to Mike Saltzman

Mike,

Thank you for the follow up. I'll give it a try and let you know... it sounds good.

I didn't notice the Canva options dropdown, thanks for the trick

François
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