#ifdef 与#endif 在函数中的作用?及其用法?CV_IMPL CvCapture * cvCreateFileCapture (const char * filename){ CvCapture * result = 0; #ifdef WIN32 if (! result) result = cvCreateFileCapture_Win32 (filename); #endif #ifdef
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![#ifdef 与#endif 在函数中的作用?及其用法?CV_IMPL CvCapture * cvCreateFileCapture (const char * filename){ CvCapture * result = 0; #ifdef WIN32 if (! result) result = cvCreateFileCapture_Win32 (filename); #endif #ifdef](/uploads/image/z/6764598-54-8.jpg?t=%23ifdef+%E4%B8%8E%23endif+%E5%9C%A8%E5%87%BD%E6%95%B0%E4%B8%AD%E7%9A%84%E4%BD%9C%E7%94%A8%3F%E5%8F%8A%E5%85%B6%E7%94%A8%E6%B3%95%3FCV_IMPL+CvCapture+%2A+cvCreateFileCapture+%28const+char+%2A+filename%29%7B++++CvCapture+%2A+result+%3D+0%3B++++%23ifdef+WIN32++++if+%28%21+result%29++++++++result+%3D+cvCreateFileCapture_Win32+%28filename%29%3B++++%23endif++++%23ifdef)
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