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在win2000下用writefile对并口进行写操作没反应,为什么?
试过设成ecp,epp和ecp+epp模式,都不行,程序一运行都writefile那里就停住了,但createfile是成功的,获得了并口的句柄,不过就是不能对并口进行读写操作,请问各位大侠有没有碰到过这个问题,应该怎样解决?
程序如下: hDevice =CreateFile(\"\\\\\\\\.\\\\LPT1\",GENERIC_READ|GENERIC_WRITE, 0,// share mode none NULL, // no security OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL ); // no template char outBuffer[20]; for (DWORD i=0; i<sizeof(outBuffer); i++) outBuffer = (char)i; DWORD outCount = sizeof(outBuffer); DWORD bW; status =WriteFile(hDevice, outBuffer, outCount, &bW, NULL); |
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