我問了這個問題here。但問題似乎是別的東西,所以重新張貼在這裏..頭文件包含在main.cpp中,但是在類中拋出錯誤
我包括0123.從Zbar library main.cpp和示例代碼工作得很好。
#include <iostream>
#include <Magick++.h>
#include <zbar.h>
#include <highgui.h>
#include <cv.h>
using namespace std;
using namespace zbar;
using namespace cv;
int main (int argc, char **argv){
if(argc < 2) return(1);
// create a reader
ImageScanner scanner;
// configure the reader
scanner.set_config(ZBAR_NONE, ZBAR_CFG_ENABLE, 1);
// obtain image data
Magick::Image magick(argv[1]); // read an image file
int width = magick.columns(); // extract dimensions
int height = magick.rows();
Magick::Blob blob; // extract the raw data
magick.modifyImage();
magick.write(&blob, "GRAY", 8);
const void *raw = blob.data();
// wrap image data
Image image(width, height, "Y800", raw, width * height);
// scan the image for barcodes
int n = scanner.scan(image);
cv::Mat dispImage = imread(argv[1]);
// extract results
for(Image::SymbolIterator symbol = image.symbol_begin();
symbol != image.symbol_end();
++symbol) {
// do something useful with results
cout << "decoded " << symbol->get_type_name()
<< " symbol \"" << symbol->get_data() << '"' << endl;
}
}
// clean up
image.set_data(NULL, 0);
return(0);
}
但是,如果我做一個虛擬類,幷包括在這個類的頭zbar.h,我得到以下錯誤:
the default argument for parameter 0 of ‘zbar::Exception::Exception(const void*)’ has not yet been parsed line 144, external location: /usr/local/include/zbar/Exception.h C/C++ Problem
#ifndef DUMMY_H
#define DUMMY_H
#include <zbar.h>
class dummy{
public:
dummy();
};
#endif // DUMMY_H
我即使
嘗試extern "C"{
#include <zbar.h>
}
但它拋出template with C linkage
錯誤的100s。
有沒有zbar.cpp – harsh