Windows Mobile显示不正确的图像大小

I am trying to create an application for WinMobile using SmartDevice project in VS2008 for Motorola device. I am adding image to the form. It looks good in editor and emulator but when I run it on my device, image looks smaller in two times then original. What can I do with this? All other controls looks exactly the same as they were in editor, only images im PictureBoxes are reduced.I am trying to create an application for WinMob