Canon SDK Initialisation Crash

Question

im currently trying to use the Canon SDK in C++. It's indeed the first time I use a SDK and im a begginer in C++.

The problem is that when i try to initialize the SDK with the EdsInitializeSDK() function it instantly crash, here is the errors messages :

Exception thrown at 0x00007FFA34E0121C (EDSDK.dll) in CameraTest.exe: 0xC0000005: Access violation reading location 0x00000000B44D4740.

Unhandled exception at 0x00007FFA34E0121C (EDSDK.dll) in CameraTest.exe: 0xC0000005: Access violation reading location 0x00000000B44D4740.

Heres the entire code here :

#include "stdafx.h"
#include "iostream"
#include "EDSDK.h"
#include "EDSDKTypes.h"
#include "CameraModel.h"
#include "CameraModelLegacy.h"
#include "CameraController.h"
#include "CameraEventListener.h"

using namespace std;

int main(void)
{
    EdsError err = EDS_ERR_OK;
    EdsCameraListRef cameraList = NULL;
    EdsUInt32 count = 0;
    EdsCameraRef camera = nullptr;
    bool isSDKLoaded = false;

    err = EdsInitializeSDK();
    system("pause");
    if (err == EDS_ERR_OK) {
        cout << "SDK INITIALISED" << endl;
    } else {
        cout << "SDK INITIALISATION FAILED WAIT FOR EXIT" << endl;
        system("pause");
        exit(84);
    }
    cout << err << endl;
    err = EdsGetCameraList(&cameraList);
    cout << err << endl;
    if (err == EDS_ERR_OK) {
        cout << "Camera List Ok" << endl;
        err = EdsGetChildCount(cameraList, &count);
        cout << "Count : " << count << endl;
        if (count == 0) {
            err = EDS_ERR_DEVICE_NOT_FOUND;
        }
    }
    else {
        cout << "No Camera List" << endl;
    }
    if (err == EDS_ERR_OK) {
        cout << "It worked" << endl;
        err = EdsGetChildAtIndex(cameraList, 0, &camera);
    } else {
        cout << "It didnt worked" << endl;
    }
    system("pause");
}

If i remove the EDSInitializeSDK function, it don't crash. Do you have an idea about whats the problem ? Thanks.

Answer 1

Ok, so the answer is quite simple. When i connect my camera, a software named "EOS Utility 3" shows up. Its the problem, when I close it (and makes sure its realy close and not just reducted), it works. Thanks for your help. (I was using Canon EDSDK version 3.6.1 with a Canon EOS 1300D)