I have a form that I have set up that uses a tab control. I have set the background color of the form to blue and have set the back style property of the tab control to transparent. On some users computer that tab control is transparent, but on some other users computer the tab control is the default gray. I don’t know of any settings on the users computers that could cause the tab control to loose it’s transparency.
Can anyone help me? Why would the tab control display differently on different computers, normal on some and transparent on others?
I've had some troubles similar to yours before. I did some research and found out how to fix a problem like this. If you go Tools > Options..., and go to the Forms/Reports tab, uncheck the box "Use Windows Themed Controls on Forms". This worked for me, and since then, I always leave this unchecked (not sure what you gain from checking it). Give it a try.