a strange code, the SDK will not do so when it parametric space, If MFC is the same code will enable it to participate in the air, it may be worthwhile for everyone studies.

Packet : 15883851vc_pramisnull.rar filelist
MFC导致的参数自动变为空的例子\MFC使参数为空的.rar
MFC导致的参数自动变为空的例子\纯Win32就没事儿.rar
MFC导致的参数自动变为空的例子

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