Online There are many ways to achieve translucent form is mainly used UpdateLayeredWindow function. I found a bit of information on the Internet, using DirectX9 achieved translucent form.

Release
.......\TransWndDX.exe
TransWndDX
..........\ReadMe.txt
..........\resource.h
..........\stdafx.cpp
..........\stdafx.h
..........\targetver.h
..........\TransWndDX.aps
..........\TransWndDX.cpp
..........\TransWndDX.rc
..........\TransWndDX.vcproj
..........\uImageDC.cpp
..........\uImageDC.h
TransWndDX.sln

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