darkbyte: Thanks for your reply. To check if the dimemsion changes can work when the screen rotates 90 degree or 270 degree(and it's hard to know whether 90 degree or 270 degree).But when I rotates 180 degree, I dont know what to do. like: 1024 x 768 ------ 0 degree or 180 degree 768 x 1024 ------ 90 degree or 270 degree How to deffer them if they are the same dimension?

I've resolved the problem. it was Init_guid.h havent been included.

ilavl wrote: I checked my resources and verified that the dialog(IDD_DIALOG1) is right there. I had a similar problem like this one long before. I deleted all files in the output dir and then did a re-build. Try that you too! Rickard Andersson8 Here is my card, contact me later! UIN: 50302279 E-Mail: nikado@pc.nu Interests: C++, ADO, SQL, Winsock, 0s and 1s

Hello Georg, Do you know how can i draw transparent image with IPicture object ? Please help me ... My month article: Game programming by DirectX by Lan Mader. Please visit in: www.geocities.com/hadi_rezaie/index.html Hadi Rezaie