python调用dll、so库

因为挺简单的，直接上代码。
界面使用pyqt画的

1.引入库以及获取库方法

代码如下（示例）：

	/*可以看注释帮助理解*/
import sys
from ctypes import * //python引用C++库的模块
import threading//线程
from PyQt5.QtWidgets import QApplication, QMainWindow, QDialog//界面类
from mainWindow import Ui_Dialog//ui源码

#python回调函数
def _callback(para):
    return 1
CALLBACK =CFUNCTYPE(c_int,c_int)//回调函数
callBackFunc = CALLBACK(_callback)
//写一个类加载dll中方法
class testdll:
    def __init__(self):
        self.cdll = cdll.LoadLibrary("./xxx.dll")
        return
    def ownFuncB(self):
        self.cdll.FuncC()
        return 
    def ownFuncC(self,a,b,c,d,e,f):
        self.cdll.FuncD(a,b,c,d,e,f)
        return
    def ownFuncD(self,a,b,c,d,e,f):
        self.cdll.FuncE(a,b,c,d,e,f)
        return
    def ownFuncE(self,callback):
        self.cdll.FuncF(callback)//此处为回调
        self.cdll.FuncG()
        self.cdll.FuncH()
        return
    def ownFuncF(self, callback):
        self.cdll.FuncI(callback)
        return

	dllTest = testdll()//类对象
def start(self):
    dllTest.ownFunc(); 
def end(self):
    dllTest.ownFunc(); 
mainWindowUi = Ui_Dialog()
if __name__ == '__main__':
    app = QApplication(sys.argv)
    dialog = QDialog()  
    mainWindowUi.setupUi(dialog)
    mainWindowUi.pushButton.clicked.connect(start)
    mainWindowUi.pushButton_2.clicked.connect(end)
    dialog.show()
    sys.exit(app.exec_())

UI源码，建议用qt设计师直接拖

代码如下（示例）：

from PyQt5 import QtCore, QtGui, QtWidgets


class Ui_Dialog(object):
    def setupUi(self, Dialog):
        Dialog.setObjectName("Dialog")
        Dialog.resize(660, 420)
        self.pushButton = QtWidgets.QPushButton(Dialog)
        self.pushButton.setGeometry(QtCore.QRect(140, 370, 120, 36))
        self.pushButton.setObjectName("pushButton")
        self.pushButton_2 = QtWidgets.QPushButton(Dialog)
        self.pushButton_2.setGeometry(QtCore.QRect(400, 370, 120, 36))
        self.pushButton_2.setObjectName("pushButton_2")
        self.textBrowser = QtWidgets.QTextBrowser(Dialog)
        self.textBrowser.setGeometry(QtCore.QRect(30, 10, 600, 350))
        self.textBrowser.setObjectName("textBrowser")

        self.retranslateUi(Dialog)
        #self.pushButton.clicked.connect(Dialog.startSign)
        #self.pushButton_2.clicked.connect(Dialog.endSign)
        QtCore.QMetaObject.connectSlotsByName(Dialog)

    def retranslateUi(self, Dialog):
        _translate = QtCore.QCoreApplication.translate
        Dialog.setWindowTitle(_translate("Dialog", "功能"))
        self.pushButton.setText(_translate("Dialog", "操作1"))
        self.pushButton_2.setText(_translate("Dialog", "操作2"))

总结

1、加载库
	cdll = cdll.LoadLibrary("./XXX.dll")//dll路径，替换为自己的路径,so库也是同样的写法
    cdll.FuncA()//dll中的方法。类似于win下GetProcAddress()，linux下Qt的 QLibrary.resolve();
2、回调
def _callback(para):
    return 1
CALLBACK =CFUNCTYPE(c_int,c_int)//回调函数
callBackFunc = CALLBACK(_callback)
3、线程
class myThread(threading.Thread):
    def __init__(self):
        threading.Thread.__init__(self)
    def run(self):
        testthread()
def testthread(): 
    //Func();
4、展示图片
	mainWindowUi.textBrowser.document().setHtml("""<img src="sign.png"/>""")
    mainWindowUi.textBrowser.show()

总体不难，可以试试。