开源wkhtmltopdf使用心得 （三）

前面已经在程序里面使用wkhtmltopdf.exe进行网页转换。但是存在一些弊端，而且也不方便我们使用，接下来我们将使用wkhtmltox库提供的API接口将wkhtmltox添加到我们自己的项目中：

vs2008中添加使用wkhtmltopdf开源项目
1.下载wkhtmltox-0.12.3.2_msvc2013-win32.exe安装
网站：http://wkhtmltopdf.org/
2.将wkhtmltopdf的安装目录下的lib和include添加到vs中
a.打开vs选择工具-选项-项目和解决方案-VC++目录
包含文件中添加inlcude路径
库文件中添加lib路径
3.在项目中添加
#include <wkhtmltox/pdf.h>

#pragma comment(lib, "wkhtmltox.lib")

4. 将wkhtmltox.dll复制到当前项目生成的exe目录下

vs2010中添加lib和include
项目右击-属性-VC++目录

/****************************************************
头文件中添加以下代码
****************************************************/



#include <wkhtmltoxpdf.h>
#include <wkhtmltoximage.h>


static void pdf_progress_changed(wkhtmltopdf_converter* c, int p); // 类成员函数作为回调函数

static void pdf_phase_changed(wkhtmltopdf_converter* c);

static void pdf_error(wkhtmltopdf_converter* c, const char* msg);

static void pdf_warning(wkhtmltopdf_converter* c, const char* msg);

static void pdf_finish(wkhtmltopdf_converter* c, int p);

static CmyHtmlToPdfDlg* myDlg;  // 作为类指针在回调函数中使用类非静态变量和非静态成员函数

/****************************************************
源文件中添加以下代码
****************************************************/
CmyHtmlToPdfDlg::CmyHtmlToPdfDlg(CWnd* pParent /*=NULL*/)
    : CDialog(CmyHtmlToPdfDlg::IDD, pParent)
    , m_editPipe_data(_T(""))
{
    m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME);
        myDlg  = this;
}

CmyHtmlToPdfDlg * CmyHtmlToPdfDlg::myDlg = NULL;
void CmyHtmlToPdfDlg::pdf_progress_changed(wkhtmltopdf_converter* c, int p){ 
    printf("%3d%%
", p);    
    fflush(stdout); 
    CString str;
    str.Format("pdf progress changed %s",wkhtmltopdf_progress_string(c));
    myDlg->m_editPipe.ReplaceSel(str + "
");
} 

void CmyHtmlToPdfDlg::pdf_phase_changed(wkhtmltopdf_converter* c){ 
    int phase = wkhtmltopdf_current_phase(c); 
    printf("pdf phase changed %s
", wkhtmltopdf_phase_description(c,phase)); 
    CString str;
    str.Format("%s", wkhtmltopdf_phase_description(c,phase));
    myDlg->m_editPipe.ReplaceSel(str + "
");
} 

void CmyHtmlToPdfDlg::pdf_error(wkhtmltopdf_converter* c, const char* msg){ 
    fprintf(stderr, "Error: %s
", msg);
    CString str;
    str.Format("pdf error %s", msg);
    myDlg->m_editPipe.ReplaceSel(str + "
");
    //AfxMessageBox(msg);
} 

void CmyHtmlToPdfDlg::pdf_warning(wkhtmltopdf_converter* c, const char* msg){ 
    fprintf(stderr, "Warning: %s
", msg);
    CString str;
    str.Format("pdf warning %s", msg);
    myDlg->m_editPipe.ReplaceSel(str + "
");
    //AfxMessageBox(msg);
} 

void CmyHtmlToPdfDlg::pdf_finish(wkhtmltopdf_converter* c, int p) { 
    printf("%3d%%
", p);    
    //fflush(stdout); 
    int iCode = wkhtmltopdf_http_error_code(c);
    int phase = wkhtmltopdf_current_phase(c); 
    CString str2;
    str2.Format("%s", wkhtmltopdf_phase_description(c,phase));
    myDlg->m_editPipe.ReplaceSel(str2 + "
");
    CString str,str1, tmp;
    str.Format("error code %d", iCode);
    str1.Format("finish code %d", p);
    tmp = str + "
" + str1;
    myDlg->m_editPipe.ReplaceSel(tmp + "
");
    if (iCode == 0 && p != 0 && str2 == "Done")
    {
        //MessageBox("下载完成");
        if (myDlg == NULL)
        {
            return;
        }
        myDlg->mess();
    } else
    {
        ;
    }

} 

void CmyHtmlToPdfDlg::OnBnClickedButton1()
{
    // TODO: 在此添加控件通知处理程序代码
    CString strAddress, tmpName;
    m_editAddress.GetWindowText(strAddress);    
    BOOL isOpen = FALSE;        //是否打开(否则为保存)  
    CString defaultDir = "D:\";   //默认打开的文件路径  
    CString fileName = "newFile.pdf";         //默认保存的文件名  
    CString filter = "文件(*.pdf)|*.pdf||";   //文件过虑的类型  
    CFileDialog openFileDlg(isOpen, defaultDir, fileName, OFN_HIDEREADONLY|OFN_OVERWRITEPROMPT, filter, NULL);  
    openFileDlg.GetOFN().lpstrInitialDir = "D:\my\";  //默认打开目录
    INT_PTR result = openFileDlg.DoModal();  
    CString filePath = defaultDir + "\" + fileName;  
    if(result == IDOK) {  
        filePath = openFileDlg.GetPathName();  
    }

    //CWnd::SetDlgItemTextW(IDC_EDIT_DEST, filePath);  

    //     std::string str =  CW2A(tmpName);
    //     const char *tmName = str.c_str();
    // 
    // 
    //     std::string strAddr =  CW2A(strAddress);
    //     const char *tmAddr = strAddr.c_str();
    //     CString sWebAddress;
    //     sWebAddress = "D:\htmltopdf\wkhtmltopdf.exe";
    //     sWebAddress += " www.hao123.com";
    //     sWebAddress += " D:\my资料库\我的资料.pdf";

    //ShellExecute(this->m_hWnd, "open", "D:\htmltopdf\wkhtmltopdf.exe", sWebAddress, NULL, SW_SHOW);

    CString sWebAddress, strLocaPath;
    sWebAddress = strAddress;
    strLocaPath = filePath;
    //     strLocaPath = drive;
    //     strLocaPath += "\" + fileName;
    //     strTmpPath = strLocaPath;

    std::string tmpPath = strLocaPath;
    std::string tmpAddr = sWebAddress;
    wkhtmltopdf_global_settings* gs; 
    wkhtmltopdf_object_settings* os; 
    wkhtmltopdf_converter* c; 
    int i = 0;
    wkhtmltopdf_init(i); 

    gs = wkhtmltopdf_create_global_settings(); 
    wkhtmltopdf_set_global_setting(gs, "out", tmpPath.c_str()); 

    os = wkhtmltopdf_create_object_settings(); 
    wkhtmltopdf_set_object_setting(os, "page", tmpAddr.c_str()); 

    c = wkhtmltopdf_create_converter(gs); 

    wkhtmltopdf_set_progress_changed_callback(c, CmyHtmlToPdfDlg::pdf_progress_changed); 
    wkhtmltopdf_set_phase_changed_callback(c, CmyHtmlToPdfDlg::pdf_phase_changed); 
    wkhtmltopdf_set_error_callback(c, CmyHtmlToPdfDlg::pdf_error); 
    wkhtmltopdf_set_warning_callback(c, CmyHtmlToPdfDlg::pdf_warning); 
    wkhtmltopdf_set_finished_callback(c, CmyHtmlToPdfDlg::pdf_finish);

    wkhtmltopdf_add_object(c, os, NULL); 

    if( !wkhtmltopdf_convert(c) ) 
        fprintf(stderr, "Convertion failed!"); 

//     int iCode = wkhtmltopdf_http_error_code(c);// icode =0 是成功
//     printf("httpErrorCode: %d
", wkhtmltopdf_http_error_code(c)); 
//     if (!iCode)
//     {
//         AfxMessageBox("SUCESS");
//     }

//     wkhtmltopdf_destroy_global_settings(gs);
// 
//     wkhtmltopdf_destroy_object_settings(os);
// 
//     wkhtmltopdf_destroy_converter(c); 
// 
//     iCode = wkhtmltopdf_deinit(); 

}

注意：保存的目录不能有中文路径和中文名称，如果路径中有中文，则不能转换，如果名称中有中文，则转换的pdf名称中文部分是乱码。