Le Piantes Solid State Electronic Devices-STREETMAN AND SANJAY BANERJEE.pdf
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Category:Books by Ben G. StreetmanQ:
Delphi TComboBox with images as well as text
I need to create a component for my application with TComboBox (and TListView), but instead of standard text, I need to have images, as well as text.
Is it possible to have an image for the default item? And then to change it on change of selection?
If not, is it possible to have an image that can be edited? I.e. to have a list of items, from which only a part of the items can be selected.
If not, is it possible to have a list with text and items with image and text? If it is possible, how can I do it?
The third question is most important for me, because the item that should be selected is not always the first item.
If you need any other information, let me know.
A:
The TComboBox control has an Images property which is a TBitmapList. This contains TBitmapImage objects, which can be styled using the TComboBox.StyleImages property. You can handle the StyleImageClick event to detect whether the user clicked the selected image or not.
As for the rest of your question, it depends on what you're trying to do. I would tend to say that the VCL doesn't really provide support for this type of control, which is why the ComboBox in Delphi XE2 offers it (and many other options) as a standard component.
A:
What about using TListView, using the TListView.DrawColumnCell event to draw your image instead of the default text?
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