EControl Syntax Editor SDK
TCustomGutterObject.ImageIndex Property

Determines which image appears on the gutter.

property ImageIndex: TImageIndex;

The ImageIndex property determines which image from TGutter's Images list or from the own ImageList list appears on the gutter. 

These lists are zero-based; the first image is indexed by 0, the second by 1, and so forth. Since ImageIndex holds only a single integer value, the positions of the selected images must coincide on the different lists. 

If both TGuter.Images and ImageList are specified, only ImageList will be used.

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