c++ - Canon SDK. Take picture from camera -

i have canon eos d600 camera. need take picture using c++. documentation didn't me. have example code, takes photo? doesn't help:

#include <windows.h> #include <iostream> #include <conio.h> #include <stdio.h> #include <edsdk.h> #include <edsdktypes.h> #include <edsdkerrors.h>  using namespace std;  edserror getfirstcamera(edscameraref *camera); int main(){     edserror err=eds_err_ok;     edscameraref camera=null;     bool issdkloaded=false;     err=edsinitializesdk();     if(err==eds_err_ok) issdkloaded=true;     if(err==eds_err_ok) err=getfirstcamera(&camera);     edsopensession(camera);     edsint32 savetarget = kedssaveto_host;     err = edssetpropertydata( camera, kedspropid_saveto, 0, 4, &savetarget );      edscapacity newcapacity = {0x7fffffff, 0x1000, 1};     err = edssetcapacity(camera, newcapacity);       const char* ch_dest = "c:\\photo\\img.jpg";     edscreatefilestream( ch_dest ,kedsfilecreatedisposition_createalways,kedsaccess_readwrite,0);      edssendcommand(camera, kedscameracommand_takepicture, 0);     edsclosesession(camera);     edsterminatesdk();     return 0; }  edserror getfirstcamera(edscameraref *camera) { edserror err=eds_err_ok; edscameralistref cameralist=null; edsuint32 count=0; // camera list err = edsgetcameralist(&cameralist); // number of cameras if(err == eds_err_ok) {     err = edsgetchildcount(cameralist, &count);     if(count == 0)     {         err = eds_err_device_not_found;     } } // first camera retrieved if(err == eds_err_ok) {     err = edsgetchildatindex(cameralist , 0 , camera); } // release camera list if(cameralist != null) {edsrelease(cameralist); cameralist = null; } return err; }  #include <windows.h> #include <iostream> #include <conio.h> #include <stdio.h> #include <edsdk.h> #include <edsdktypes.h> #include <edsdkerrors.h>  using namespace std;  edserror getfirstcamera(edscameraref *camera); int main(){     edserror err=eds_err_ok;     edscameraref camera=null;     bool issdkloaded=false;     err=edsinitializesdk();     if(err==eds_err_ok) issdkloaded=true;     if(err==eds_err_ok) err=getfirstcamera(&camera);     edsopensession(camera);     edsint32 savetarget = kedssaveto_host;     err = edssetpropertydata( camera, kedspropid_saveto, 0, 4, &savetarget );      edscapacity newcapacity = {0x7fffffff, 0x1000, 1};     err = edssetcapacity(camera, newcapacity);       const char* ch_dest = "c:\\photo\\img.jpg";     edscreatefilestream( ch_dest ,kedsfilecreatedisposition_createalways,kedsaccess_readwrite,0);      edssendcommand(camera, kedscameracommand_takepicture, 0);     edsclosesession(camera);     edsterminatesdk();     return 0; }  edserror getfirstcamera(edscameraref *camera) { edserror err=eds_err_ok; edscameralistref cameralist=null; edsuint32 count=0; // camera list err = edsgetcameralist(&cameralist); // number of cameras if(err == eds_err_ok) {     err = edsgetchildcount(cameralist, &count);     if(count == 0)     {         err = eds_err_device_not_found;     } } // first camera retrieved if(err == eds_err_ok) {     err = edsgetchildatindex(cameralist , 0 , camera); } // release camera list if(cameralist != null) {edsrelease(cameralist); cameralist = null; } return err; } 

having errors: [linker error] undefined reference `imp_edsinitializesdk@0'

help please

hello code works.

#include <iostream> #include "edsdk.h" #include "edsdkerrors.h" #include "edsdktypes.h" #include <thread> #include <chrono>  char * directory = "here directory";  void download_img(edsbaseref & object, edsvoid * & context) {     edsstreamref stream = null;     edsdirectoryiteminfo diriteminfo;     edsgetdirectoryiteminfo(object, &diriteminfo);     strcat(directory, file_name);     edscreatefilestream(directory, kedsfilecreatedisposition_createalways, kedsaccess_readwrite, &stream);     edsdownload(object, diriteminfo.size, stream);     edsdownloadcomplete(object);     edsrelease(stream);     stream = null;     if (object)         edsrelease(object); }  edserror edscallback handleobjectevent(edsobjectevent event, edsbaseref object, edsvoid * context) {     download_img(object, context);     return eds_err_ok; }  void init_camera(edscameraref & camera) {     edserror err = eds_err_ok;     edscameralistref cameralist = null;     edsuint32 count = 0;     camera = null;      err = edsinitializesdk();     err = edsgetcameralist(&cameralist);     err = edsgetchildcount(cameralist, &count);     if (count > 0)     {         err = edsgetchildatindex(cameralist, 0, &camera);         edsrelease(cameralist);     }     edssetobjecteventhandler(camera, kedsobjectevent_diritemcreated, handleobjectevent, null);     edssendstatuscommand(camera, kedscamerastatuscommand_uiunlock, 0); }  void start_liveview(edscameraref camera) {     edsopensession(camera);     edsuint32 device = kedspropid_evf_outputdevice;     edsgetpropertydata(camera, kedspropid_evf_outputdevice, 0, sizeof(device), &device);      device |= kedsevfoutputdevice_pc;     edssetpropertydata(camera, kedspropid_evf_outputdevice, 0, sizeof(device), &device); }  void stop_liveview(edscameraref camera) {     edsuint32 device;     edsgetpropertydata(camera, kedspropid_evf_outputdevice, 0, sizeof(device), &device);     device &= ~kedsevfoutputdevice_pc;     edssetpropertydata(camera, kedspropid_evf_outputdevice, 0,  sizeof(device), &device);     edsclosesession(camera); }  void take_video(edscameraref camera, int length) {     edsopensession(camera);     edsuint32 record_start = 4; // begin movie shooting      edssetpropertydata(camera, kedspropid_record, 0, sizeof(record_start), &record_start);     this_thread::sleep_for(chrono::milliseconds(length));     edsuint32 record_stop = 0; // end movie shooting      edssetpropertydata(camera, kedspropid_record, 0, sizeof(record_stop), &record_stop);     edsclosesession(camera); }  void update_data(edscameraref camera) {     edsopensession(camera);     // here event happens     edsclosesession(camera); }  void take_photo(edscameraref camera, int count, int interv_millsec) {     (int = 0; < count; ++i) {         edsopensession(camera);         cout << "shoot" << endl;         edssendcommand(camera, kedscameracommand_takepicture, 0);         this_thread::sleep_for(chrono::milliseconds(interv_millsec));         edsclosesession(camera);     }     update_data(camera); }  void dispose(edscameraref camera) {     edsclosesession(camera);     edsterminatesdk(); }  int main (){     edscameraref camera;     init_camera(camera);      // here may call functions above      // take video     // firstly have start liveview     // secondly call "take video"     // thirdly stop liveview     return 0; }