How can I add a background image to my delphi form? I added a TImage, but now the labels aren't visible any more, and the texts of my checkboxes are in a blue "box" (blue is the background color i chose). This blue doesn't look very good on the background image, and the hidden labels also don't look good. How do I fix these problems?
For the labels: make sure that they are transparent (Transparent property in the Object Inspector), and that they are on top of the TImage in the Z-order of controls. To correct this you can execute the "Send to back" command on the TImage component in design mode, it will make all other non-windowed controls appear on top of it.
For the checkboxes I don't know what the problem in your case is, in Delphi 2007 checkboxes appear properly transparent when put over a TImage. Maybe you use an earlier Delphi version? If so it would be good to mention this in the question. There may also be a different behaviour depending on whether themes are active. Again, hard to say without further information.