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help!VC++高手教我!

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bair

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Oct 1, 1996, 3:00:00 AM10/1/96
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我想在VC++ 4.0下寫個通訊程式,是自com2 or com3等接收資料,我就用mfc作架
構,
然後自己add class,可是都無法使用W32的SetCommState(),SetCommMask()等API,
是
否要在去宣告什麼?
因為總有:
"xx.h:error C2065: 'GetCommState' : undeclared identifier"等訊息!

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