Access LPT in C++
Access LPT in C++
如何在c++中可视化表达访问LPT端口?我读过包括io.dll,但我不知道如何使用它。有人能告诉我一个简单的代码吗?
您可以使用CreateFile()来打开I/O设备,例如打印机端口。
hLPT = CreateFile(
"LPT1",
GENERIC_WRITE,
0,
0,
CREATE_ALWAYS,
FILE_FLAG_NO_BUFFERING,
0);
WriteFile(
hLPT,
pointerToBuffer,
sizeOfBuffer,
&numberOfBytesWritten,
NULL);
FlushFileBuffers(hLPT);
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