I downloaded the last SVN revision (258). Everything works OK with OpenGL, but with Direct3D some letters/texts are missing, textbox looks weird and it when I select an item in combobox, it doesn't appear as selected. Here I compiled your demo: download
Downloaded, ran, and found no problems.
I'm guessing you're using DirectX and using an ATI card? I have heard of some issues when using this combination. Could be a driver issue, I'm not sure..
Yes I am using ATI video card. I am downloading the latest driver, and will see if it helps.
The latest driver didn't help. I'll try the latest dx9 version.
The latest directx9 version didn't help too. Is there any other way to solve this problem?
Yea, get an Nvidia graphics card
Do all the Ogre demos run fine in DX with your ATI card? I'm not doing anything out of the ordinary, at least not that I know of..