我有一個項目需要使用Topaz簽名捕獲板。我們的產品目前使用Topaz提供的ActiveX控件來收集網站上的簽名,但我們正在嘗試轉向由Python支持的桌面應用程序。 Python將允許我們在沒有太多額外工作的情況下分支到多個操作系統。使用SWIG包裝C/C++庫
Topaz提供一個'C'庫(http://www.topazsystems.com/sigpluslibrary.html)用於連接他們的設備。我相信我確定它實際上是C++(使用類和其他C++構造)。我試圖使用SWIG和Cython爲Python創建一個包裝器,但我沒有得到很多運氣。
我對夜風目錄結構是這樣的:
- SigSwig
- 包括(包含所有自黃玉共享C庫的頭文件)
- setup.py
- SigLib.i
- Signature.i
- etc ...
Setup.py
# setup.py
import distutils
from distutils.core import setup, Extension
module = Extension(
"_SigLib",
["SigLib.i"],
swig_opts=['-c++'],
language='c++',
library_dirs=['c:\Python27'],
libraries=["SigLib", "hid", "LibJpeg", "libtiff", "WINTAB32", "WNTAB32X", "zlib"],
extra_options=["SigLib.lib", "hid.lib", "LibJpeg.lib", "libtiff.lib", "WINTAB32.LIB", "WNTAB32X.LIB", "zlib.lib"]
)
setup(
name = "Signature Capture",
version = "1.0",
ext_modules = [module]
)
SigLib.i
%module SigLib
%{
#define SIGAPI
#include "Include\SigLib.h"
%}
%include TabletParameters.i
%include TabletInterface.i
%include LCDInterface.i
%include Signature.i
Signature.i
%module Signature
%include "Include\Signature.h"
我在下面的例子SWIG一個困難時期,但從我可以告訴這應該沒問題。 SigLib.i加載主標題(SigLib.h),其中包括SIGAPI的聲明和所有主要包含文件。它不包含Signature.h(或其他接口文件中的任何其他頭文件),因爲它不遵循所有頭文件。然後它加載其他接口文件。 Signature.i和所有其他接口文件都包含對解析頭的引用。
我已經嘗試了幾種不同的方式,這似乎是迄今爲止最好的。但是,當我執行setup.py,我得到這些錯誤:
SigLib_wrap.cpp(3417) : error C2065: 'temp' : undeclared identifier
SigLib_wrap.cpp(3418) : error C2065: 'temp' : undeclared identifier
SigLib_wrap.cpp(3418) : error C2059: syntax error : '*'
SigLib_wrap.cpp(3419) : error C2513: 'TabletParameters' : no variable declared before '='
SigLib_wrap.cpp(3419) : error C2065: 'temp' : undeclared identifier
SigLib_wrap.cpp(3420) : error C2065: 'temp' : undeclared identifier
SigLib_wrap.cpp(3420) : error C2541: 'delete' : cannot delete objects that are not pointers
SigLib_wrap.cpp(3432) : error C2275: 'TabletParameters' : illegal use of this type as an expression c:\users\kevin\downloads\sigpython\include\TabletParameters.h(18) : see declaration of 'TabletParameters'
望着生成的代碼,大部分錯誤包含SIGAPI,像這樣:
SIGAPI * temp;
SIGAPI似乎是一個#define
所述發生在SigLib.h文件,並在類定義被用於這樣的:
class SIGAPI Signature
SigLib.h定義:
#ifdef SIGLIBDLL
#define SIGAPI __declspec(dllexport)
#else
#define SIGAPI
#endif
我試了幾個小時的谷歌試圖找到解決方案,但我沒有任何運氣。我一直無法在SWIG文檔中找到任何內容,但我真的不確定要尋找什麼。
編輯:
製造Giorgos除了加載額外的標題暗示的變化。它似乎現在生成了整個包裝文件,包含了所有需要的東西,但是鏈接到庫時卻出現了錯誤。
SigLib.i
%module SigLib
%{
#include "Include\SigLib.h"
%}
%include <windows.i>
%include "Include\SigLib.h"
%include "Include\SigPoint.h"
%include "Include\SigStroke.h"
%include "Include\TabletParameters.h"
%include "Include\CircularBuffer.h"
%include "Include\SerialIoIF.h"
%include "Include\HidIoIF.h"
%include "Include\UsbIoIF.h"
%include "Include\SocketIoIF.h"
%include "Include\NewSocketIoIF.h"
%include "Include\SimIoIF.h"
%include "Include\ProcessSerialData.h"
%include "Include\CaptureSig.h"
%include "Include\TabletPoint.h"
%include "Include\PointBuffer.h"
%include "Include\TabletInterface.h"
%include "Include\TabletSampleList.h"
%include "Include\SigWindowType.h"
%include "Include\SigFile.h"
%include "Include\md5.h"
%include "Include\Utilities.h"
%include "Include\HotSpot.h"
%include "Include\HotSpotList.h"
%include "Include\BitmapCharacter.h"
%include "Include\CharacterMap.h"
%include "Include\TiffImage.h"
%include "Include\LCDGraphicBitmap.h"
%include "Include\LCDInterface.h"
我做到了,改變了,我怎麼裝的一切現在似乎被編譯,但我發現很多鏈接錯誤,像這樣的:
SigLib_wrap.obj : error LNK2019: unresolved external symbol "public: int __thiscall TabletInterface::PointsInPointBuffer(void)" ([email protected]@@QAEHXZ) referenced in function __wrap_TabletInterface_PointsInPointBuffer
SigLib_wrap.obj : error LNK2019: unresolved external symbol "public: void __thiscall TabletInterface::InitProcessInputData(void)" ([email protected]@@QAEXXZ) referenced in function __wrap_TabletInterface_InitProcessInputData
SigLib_wrap.obj : error LNK2019: unresolved external symbol "public: void __thiscall TabletInterface::CloseProcessInputData(void)" ([email protected]@@QAEXXZ) referenced in function __wrap_TabletInterface_CloseProcessInputData
我需要鏈接SigLib.lib和其他幾個lib文件,但我不知道如何從setup.py文件中獲得該文件,如果這樣做甚至可以用於Python。
謝謝,這讓我進入了我認爲更好的方向。現在,當它試圖編譯成一個Python模塊時,我收到了一堆鏈接錯誤。我需要鏈接到幾個.Lib文件,但是我無法找到一個確定的答案,如果甚至可能的話...... – kjlaw89 2015-04-21 18:00:21