python 调用c 数组参数 python调用ch

【背景】在python中没有无阻塞的键盘输入函数,

【应用场景1】等待输入,超时后使用缺省值.

【应用场景2】在菜单中输入一个字符,然后根据字符进行不同的功能(不需要键入回车键)

【分析】在c函数库中，有对应的函数getch()和kbhit(),这两个函数在conio.h头文件中

【编程环境】

1、python版本：Python 3.4.3

2、C编译器IDE：MinGW Developer Studio 2.05 Build date:04-01-2005

3、编译器版本：gcc version 3.4.2 (mingw-special)

【MinGW Developer Studio 开发动态包】

1、创建一个工程“Win32 Dynamic-Link Library”，工程名为myPythonExtend

2、添加一个源文件：KeyboardExtend.c

3、在菜单“Edit”-->"Options...",弹出对话框

(1)添加python头文件目录

(2)添加python库文件目录

4、在菜单“Project”-->"Settings...",弹出对话框

(1)添加Debug 的link选项

Debug\Win32CIO.pyd

python34

(2)添加Release的link选项

Release\Win32CIO.pyd

python34

5、KeyboardExtend.c文件内容：

#include

#include

#include

 

static  PyObject * mytest()

{
    printf("enter key\n");

    for(;;)

    {
        int d;

        if (d = kbhit() != 0)

        {
            int c = getche();

            if (c=='q')

            {
                break;

            }

            printf("your input:%c,%c\n",d,c);

        }

    }

    PyObject* resultObject = Py_BuildValue("i" , 0);

    return  resultObject;

}

 

static  PyObject *mypy_getchar(PyObject *self, PyObject *args)

{
    char result = getchar();

    PyObject* resultObject = Py_BuildValue("i" , result);

    return  resultObject;

}

 

static  PyObject *mypy_putchar(PyObject *self, PyObject *args)

{
    int ch;

    PyArg_ParseTuple(args, "i" , &ch);

    int result = putchar(ch);

    PyObject* resultObject = Py_BuildValue("i" , result);

    return  resultObject;

}

 

static  PyObject *mypy_getch(PyObject *self, PyObject *args)

{
    int result = getch();

    PyObject* resultObject = Py_BuildValue("i" , result);

    return  resultObject;

}

 

static  PyObject *mypy_getche(PyObject *self, PyObject *args)

{
    int result = getche();

    PyObject* resultObject = Py_BuildValue("i" , result);

    return  resultObject;

}

 

static  PyObject *mypy_kbhit(PyObject *self, PyObject *args)

{
    int result = kbhit();

    PyObject* resultObject = Py_BuildValue("i" , result);

    return  resultObject;

}

static  PyObject *mypy_putch(PyObject *self, PyObject *args)

{
    int ch;

    PyArg_ParseTuple(args, "i" , &ch);

    int result = putch(ch);

    PyObject* resultObject = Py_BuildValue("i" , result);

    return  resultObject;

}

static  PyObject *mypy_ungetch(PyObject *self, PyObject *args)

{
    int ch;

    PyArg_ParseTuple(args, "i" , &ch);

    int result = ungetch(ch);

    PyObject* resultObject = Py_BuildValue("i" , result);

    return  resultObject;

}

 

 

//模块方法表

static  PyMethodDef c_io_methods[] = {
    {"getchar" , mypy_getchar, METH_VARARGS, "int getchar (void) " },

    {"putchar" , mypy_putchar, METH_VARARGS, "int putchar (int) " },

    {"getch" ,   mypy_getch,   METH_VARARGS, "int getch (void) " },

    {"getche" ,  mypy_getche,  METH_VARARGS, "int getche (void) " },

    {"kbhit" ,   mypy_kbhit,   METH_VARARGS, "int kbhit (void) " },

    {"putch" ,   mypy_putch,   METH_VARARGS, "int putch (int) " },

    {"ungetch" , mypy_ungetch, METH_VARARGS, "int ungetch (int) " },

    {"mytest" ,  mytest,       METH_VARARGS, "mytest " },

    {NULL , NULL }

};

 

static  struct  PyModuleDef win32Module_c_io = {
    PyModuleDef_HEAD_INIT,

    "Win32CIO" ,

    "Win32 conio and stdio" ,

    -1 ,

    c_io_methods,

    NULL ,

    NULL ,

    NULL ,

    NULL

};

 

//初始化函数

PyMODINIT_FUNC

PyInit_Win32CIO(void )

{
    return  PyModule_Create(&win32Module_c_io);

}

6、编译生成Release\Win32CIO.pyd

拷贝该文件到D:\app\Python34\Lib\site-packages

【python调用模块函数】

#!/usr/bin/python
 # -*- coding:utf-8 -*-
 import Win32CIO
      
 if __name__ ==  '__main__':
    while(True):
      
        if (d !=  0):
          
            if (c ==  None):
                break
            print("your input:%c,%c\n" % (d,c))
    pass